Button action listener in jsp
Hi,
I want to know, how we can do the button action listener in jsp pages. i have 3 buttons in same jsp page. each button action have separate taks in the same page. how to do this. please suggest me.
Regards
Chinna
Or, I think you have to use JSF (Java Server Faces) to use action Listeners.
visit this link:
http://72.5.124.55/javaee/5/docs/tutorial/doc/JSFDevelop5.html
Similar Messages
-
Transaction Posting Confirmation Message and Action Listener behaviour
Hi, I have a scenario that a user is Posting a Transaction and when he press the “Post” Button a, confirmation dialog box should popup asking “Do you really want to Post the record ?”. If the user press “Yes” the record is further process and If the user press “No” then the transaction should not proceed.
I have implemented the main screen(PostTransaction.java) and the popup confirmation window(ConfirmationWindow.java)
Question 1 ) Why the code is not stoping in the Post Button Action listener as in JOptionPane, then how do i know that the user has selected "Yes" or "No" ?
Question 2) Do I have to write the code for posting of a Transaction(postTransaction() method) in the “ConfirmationWindow”? or it should be in “PostTransaction”.
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
import javafx.scene.layout.GridPane;
import javafx.stage.Stage;
public class PostTransaction extends Application{
public void start(final Stage stage) throws Exception {
Group root = new Group();
Scene scene = new Scene(root, 300,300);
stage.setScene(scene);
stage.setTitle("Transaction Post Screen");
GridPane gp = new GridPane();
Label lblName = new Label("Name");
Label lblAmount = new Label("Amount");
TextField txtName = new TextField();
TextField txtAmount = new TextField();
Button btnPost = new Button("Post Record");
gp.add(lblName, 1, 1);
gp.add(lblAmount, 1, 2);
gp.add(txtName, 2, 1);
gp.add(txtAmount, 2, 2);
gp.add(btnPost, 2, 3);
btnPost.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent arg0) {
//The code does not stop here as in JOptionPane, then how do i know that the user has selected "Yes" or "No" ??
boolean popupResult = ConfirmationWindow.confirmTranactionPosting(stage, "Please Confirm");
if(popupResult==true){
//This line is printed before the user selects yes or no
System.out.println("Proceeding with Tranaction Posting");
//postTransaction();
if(popupResult==false){
//This line is printed before the user selects yes or no
System.out.println("Do not Proceed with Tranaction Posting");
root.getChildren().add(gp);
stage.show();
public static void main(String[] args) {
launch(args);
private void postTransaction(){
//write the code for posting here
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.HBox;
import javafx.stage.Modality;
import javafx.stage.Stage;
import javafx.stage.StageStyle;
public class ConfirmationWindow extends Stage {
Stage owner;
Stage stage;
BorderPane root;
static boolean postStatus = false;
public ConfirmationWindow( Stage owner, String title){
root = new BorderPane();
stage = this;
this.owner = owner;
initModality( Modality.APPLICATION_MODAL );
initOwner( owner );
initStyle( StageStyle.UTILITY );
setTitle( title );
setContents();
public void setContents(){
Scene scene = new Scene(root,250,150);
setScene(scene);
Group groupInDialog = new Group();
groupInDialog.getChildren().add( new Label("Do you really want to Post this record ?") );
root.setCenter( groupInDialog );
Button yes = new Button( "Yes" );
yes.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent e) {
postStatus =true;
stage.close(); // Close the pop up. Transfer control to PostTransaction.java and execute the PostTransaction() method.
Button no = new Button( "No" );
no.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent e) {
postStatus =false;
stage.close(); // Close the pop up only
HBox buttonPane = new HBox();
buttonPane.setSpacing(10);
buttonPane.getChildren().addAll(yes,no);
root.setBottom(buttonPane);
stage.show();
public static boolean confirmTranactionPosting(Stage owner, String title) {
new ConfirmationWindow(owner, title);
return postStatus;
}The MII Message listener is a queue. But when I understand you correctly, you do not want to process the messages immediately after arriving in the Listener.
Maybe the categorization of messages is an option for you (see [Sap Help: Processing Rule Editor - Category|http://help.sap.com/saphelp_mii121/helpdata/en/43/e80b59ad40719ae10000000a1553f6/frameset.htm]. You can enter a category for the control recipe messages. The messages will then be placed in the Listener queue. You can use the [Message Services|http://help.sap.com/saphelp_mii121/helpdata/en/43/e80b59ad40719ae10000000a1553f6/frameset.htm] actions to read the categorized messages and process them as you need.
In addition to Manoj, you may also use the [Queueing actions|http://help.sap.com/saphelp_mii121/helpdata/en/43/e80b59ad40719ae10000000a1553f6/frameset.htm] of MII, where you can queue xml contents.
Hope this helps.
Michael -
Custom button with action listener - will not invoke action listener
Hi
For whatever reason, I cannot find a concise example of a simple custom component that can invoke an action listener. The tutorials I've read so far either ignore this fundamental topic or only make the slightest make reference to it.
The best I have come up with - in terms of a simple prototype is below... but, the action listener is never invoked.... Can someone tell me what I am missing (full code below). Hopefully, what is missing or incorrect will be obvious to you JSF experts out there.
Thanks for any help!!
-f
tld
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE taglib PUBLIC "-//Sun Microsystems, Inc.//DTD JSP Tag Library 1.2//EN" "http://java.sun.com/dtd/web-jsptaglibrary_1_2.dtd">
<taglib>
<tlib-version>0.01</tlib-version>
<jsp-version>1.2</jsp-version>
<short-name>jsfcustomcomponent</short-name>
<uri>http://jsfcustomcomponent/</uri>
<description><![CDATA[jsf custom component tags]]> </description>
<tag>
<name>specialBtnTag</name>
<tag-class>jsfcustomcomponent.SpecialBtnTag</tag-class>
<attribute>
<name>value</name>
<required>true</required>
<rtexprvalue>true</rtexprvalue>
<description><![CDATA[button value]]></description>
</attribute>
<attribute>
<name>actionListener</name>
<required>true</required>
<rtexprvalue>true</rtexprvalue>
<description><![CDATA[action listener]]> </description>
</attribute>
</tag>
</taglib>
SpecialBtnComponent
package jsfcustomcomponent;
import javax.faces.component.*;
import javax.faces.context.*;
import javax.faces.el.*;
import javax.faces.event.*;
public class SpecialBtnComponent
extends UIComponentBase implements ActionSource
public static final String COMPONENT_TYPE = "SpecialBtnComponent";
public static final String RENDERER_TYPE = "SpecialBtnRenderer";
public String getFamily()
return COMPONENT_TYPE;
public SpecialBtnComponent()
super();
setRendererType(SpecialBtnComponent.RENDERER_TYPE);
private String value;
public void setValue(String value, FacesContext facesContext)
this.value = value;
public String getValue()
if (null != value)
return value;
ValueBinding _vb = getValueBinding("value");
if (_vb != null)
return (String) _vb.getValue(getFacesContext());
else
return null;
private MethodBinding action = null;
public MethodBinding getAction()
return action;
public void setAction(MethodBinding methodBinding)
this.action = action;
private MethodBinding actionListener = null;
public MethodBinding getActionListener()
return (this.actionListener);
public void setActionListener(MethodBinding methodBinding)
this.actionListener = actionListener;
public boolean isImmediate()
return false;
public void setImmediate(boolean _boolean)
//this.immediate = immediate;
public void addActionListener(ActionListener actionListener)
addFacesListener(actionListener);
public ActionListener[] getActionListeners()
return (ActionListener[]) getFacesListeners(ActionListener.class);
public void removeActionListener(ActionListener actionListener)
removeFacesListener(actionListener);
public Object saveState(FacesContext context)
Object values[] = new Object[5];
values[0] = super.saveState(context);
values[1] = value;
values[2] = saveAttachedState(context, action);
values[3] = saveAttachedState(context, actionListener);
return ( (Object) (values));
public void restoreState(FacesContext context, Object state)
Object values[] = (Object[]) state;
super.restoreState(context, values[0]);
value = (String) values[1];
action = (MethodBinding) restoreAttachedState(context, values[2]);
actionListener = (MethodBinding) restoreAttachedState(context, values[3]);
public void broadcast(FacesEvent event) throws AbortProcessingException
super.broadcast(event);
if (event instanceof ActionEvent)
FacesContext context = getFacesContext();
MethodBinding mb = getActionListener();
if (mb != null)
mb.invoke(context, new Object[]
{event});
ActionListener listener = context.getApplication().getActionListener();
if (listener != null)
listener.processAction( (ActionEvent) event);
public void queueEvent(FacesEvent e)
if (e instanceof ActionEvent)
if (isImmediate())
e.setPhaseId(PhaseId.APPLY_REQUEST_VALUES);
else
e.setPhaseId(PhaseId.INVOKE_APPLICATION);
super.queueEvent(e);
SpecialBtnRenderer
package jsfcustomcomponent;
import java.util.*;
import javax.faces.component.*;
import javax.faces.context.*;
import javax.faces.event.*;
import javax.faces.render.*;
public class SpecialBtnRenderer
extends Renderer
String value;
public SpecialBtnRenderer()
public void decode(FacesContext context, UIComponent component)
Map requestMap = context.getExternalContext().getRequestParameterMap();
String clientId = component.getClientId(context);
SpecialBtnComponent specialBtnComponent = (SpecialBtnComponent) component;
String value = (String) requestMap.get(clientId);
if (null != value)
specialBtnComponent.setValue(value, context);
ActionEvent actionEvent = new ActionEvent(specialBtnComponent);
specialBtnComponent.queueEvent(actionEvent);
public void encodeEnd(FacesContext context, UIComponent component) throws java.io.IOException
SpecialBtnComponent specialBtnComponent = (SpecialBtnComponent) component;
ResponseWriter writer = context.getResponseWriter();
String clientId = component.getClientId(context);
value = (String) component.getAttributes().get("value");
if (value == null)
value = "defaultValue";
buildSpecialBtn(writer, value, clientId, specialBtnComponent);
private void buildSpecialBtn(ResponseWriter writer, String value, String clientId, SpecialBtnComponent component) throws java.io.IOException
writer.startElement("table", component);
writer.startElement("tbody", component);
writer.startElement("tr", component);
writer.startElement("td", component);
value = String.valueOf(value);
writer.startElement("input", component);
writer.writeAttribute("type", "submit", null);
writer.writeAttribute("name", clientId, "clientId");
writer.writeAttribute("value", value, null);
writer.endElement("input");
writer.endElement("td");
writer.endElement("tr");
writer.endElement("tbody");
writer.endElement("table");
SpecialBtnTag
package jsfcustomcomponent;
import javax.faces.component.*;
import javax.faces.el.*;
import javax.faces.webapp.*;
import com.sun.faces.util.*;
public class SpecialBtnTag
extends UIComponentTag
public String value = null;
public String actionListener = null;
public String getComponentType()
return SpecialBtnComponent.COMPONENT_TYPE;
public String getRendererType()
return SpecialBtnComponent.RENDERER_TYPE;
protected void setProperties(UIComponent component)
super.setProperties(component);
if (! (component instanceof SpecialBtnComponent))
throw new IllegalStateException("Component " + component.toString() +
" not expected type. Expected: jsfcustomcomponent.SpecialBtnComponent. Perhaps you�re missing a tag?");
SpecialBtnComponent specialBtnComponent = (SpecialBtnComponent) component;
if (value != null)
if (isValueReference(value))
ValueBinding vb = Util.getValueBinding(value);
specialBtnComponent.setValueBinding("value", vb);
else
throw new IllegalStateException("The value for �value� must be a ValueBinding.");
if (actionListener != null)
if (isValueReference(actionListener))
ValueBinding vb = Util.getValueBinding(actionListener);
specialBtnComponent.setValueBinding("actionListener", vb);
else
throw new IllegalStateException("The value for �actionListener� must be a ValueBinding.");
public void release()
super.release();
value = null;
actionListener = null;
public void setValue(String value)
this.value = value;
public String getValue()
return this.value;
public void setActionListener(String actionListener)
this.actionListener = actionListener;
public String getActionListener()
return this.actionListener;
jsp1.jsp
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%@page contentType="text/html"%>
<%@page pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsf/core" prefix="f"%>
<%@taglib uri="http://java.sun.com/jsf/html" prefix="h"%>
<%@taglib uri="http://jsfcustomcomponent/" prefix="j"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
<link rel="stylesheet" type="text/css" href="./stylesheet.css" title="Style">
</head>
<body>
<f:view>
<h:form id="form01">
<h:outputText value="test special button with action listener"/>
<j:specialBtnTag value="#{specialBtnBacking.specialBtnValue}" actionListener="#{specialBtnBacking.specialBtnActionListener}"/>
<h:messages/>
<h:outputText value="#{specialBtnBacking.outcome}"/>
</h:form>
</f:view>
</body>
</html>
SpecialBtnBacking
package specialbtn;
import javax.faces.context.*;
import javax.faces.event.*;
public class SpecialBtnBacking
private FacesContext context;
public SpecialBtnBacking()
this.setSpecialBtnValue("Special Button with action listener");
private String specialBtnValue;
public String getSpecialBtnValue()
return this.specialBtnValue;
public void setSpecialBtnValue(String specialBtnValue)
this.specialBtnValue = specialBtnValue;
private String outcome="actionlistener NOT invoked: click specialBtn above to test";
public String getOutcome()
return outcome;
public void setOutcome(String outcome)
this.outcome = outcome;
public void specialBtnActionListener(ActionEvent evt)
System.out.println("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Jsp1Backing/specialBtnActionListener()!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
this.outcome="***action listener invoked!!!***";
faces-config.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE faces-config PUBLIC "-//Sun Microsystems, Inc.//DTD JavaServer Faces Config 1.1//EN" "http://java.sun.com/dtd/web-facesconfig_1_1.dtd">
<faces-config>
<managed-bean>
<managed-bean-name>specialBtnBacking</managed-bean-name>
<managed-bean-class>specialbtn.SpecialBtnBacking</managed-bean-class>
<managed-bean-scope>request</managed-bean-scope>
</managed-bean>
<component>
<component-type>SpecialBtnComponent</component-type>
<component-class>jsfcustomcomponent.SpecialBtnComponent</component-class>
<component-extension>
<renderer-type>SpecialBtnRenderer</renderer-type>
</component-extension>
</component>
<render-kit>
<renderer>
<component-family>SpecialBtnComponent</component-family>
<renderer-type>SpecialBtnRenderer</renderer-type>
<renderer-class>jsfcustomcomponent.SpecialBtnRenderer</renderer-class>
</renderer>
</render-kit>
</faces-config>
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" version="2.4">
<display-name>pagerWEB</display-name>
<servlet>
<servlet-name>Faces Servlet</servlet-name>
<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>*.faces</url-pattern>
</servlet-mapping>
<jsp-config>
<taglib>
<taglib-uri>http://jsfcustomcomponent/</taglib-uri>
<taglib-location>/WEB-INF/jsfcustomcomponent.tld</taglib-location>
</taglib>
</jsp-config>
<servlet>
<description>Added by JBuilder to compile JSPs with debug info</description>
<servlet-name>debugjsp</servlet-name>
<servlet-class>org.apache.jasper.servlet.JspServlet</servlet-class>
<init-param>
<param-name>classdebuginfo</param-name>
<param-value>true</param-value>
</init-param>
<load-on-startup>3</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>debugjsp</servlet-name>
<url-pattern>*.jsp</url-pattern>
</servlet-mapping>
</web-app>got it working....
The changes were:
in "SpecialBtnRenderer"...
--new--
mb.invoke(context, new Object[1]);
--old--
mb.invoke(context, new Object[0]);
in "SpecialBtnTag"...
--new--
import javax.faces.event.ActionEvent;
--new--
MethodBinding mb = FacesContext.getCurrentInstance().getApplication().createMethodBinding(specialBtnListener, new Class[]{ActionEvent.class});
--old--
MethodBinding mb = FacesContext.getCurrentInstance().getApplication().createMethodBinding(specialBtnListener, null);
-Below is the entire application, again -- for those (like myself) who need concrete examples...
I hope this helps someone else! --f
jsp1.jsp
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%@page contentType="text/html"%>
<%@page pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsf/core" prefix="f"%>
<%@taglib uri="http://java.sun.com/jsf/html" prefix="h"%>
<%@taglib uri="http://jsfcustomcomponent/" prefix="j"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
<link rel="stylesheet" type="text/css" href="./stylesheet.css" title="Style">
</head>
<body>
<f:view>
<h:messages/>
<h:form id="form01">
<h:outputText value="test special button with action listener"/>
<j:specialBtnTag value="#{specialBtnBacking.specialBtnValue}" specialBtnListener="#{specialBtnBacking.specialBtnActionListener}"/>
<h:outputText value="#{specialBtnBacking.outcome}"/>
</h:form>
</f:view>
</body>
</html>
SpecialBtnBacking
package specialbtn;
import javax.faces.context.*;
import javax.faces.event.*;
public class SpecialBtnBacking
private FacesContext context;
public SpecialBtnBacking()
this.setSpecialBtnValue("Special Button with action listener");
private String specialBtnValue;
public String getSpecialBtnValue()
return this.specialBtnValue;
public void setSpecialBtnValue(String specialBtnValue)
this.specialBtnValue = specialBtnValue;
private String outcome = "actionlistener NOT invoked: click specialBtn above to test";
public String getOutcome()
return outcome;
public void setOutcome(String outcome)
this.outcome = outcome;
public void specialBtnActionListener(ActionEvent evt)
System.out.println("\n\n");
System.out.println("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Jsp1Backing/specialBtnActionListener()!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
System.out.println("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Jsp1Backing/specialBtnActionListener()!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
System.out.println("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Jsp1Backing/specialBtnActionListener()!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
System.out.println("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Jsp1Backing/specialBtnActionListener()!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
System.out.println("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Jsp1Backing/specialBtnActionListener()!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!\n\n");
this.outcome = "***action listener invoked!!!***";
jsfcustomcomponent.tld
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE taglib PUBLIC "-//Sun Microsystems, Inc.//DTD JSP Tag Library 1.2//EN" "http://java.sun.com/dtd/web-jsptaglibrary_1_2.dtd">
<taglib>
<tlib-version>0.01</tlib-version>
<jsp-version>1.2</jsp-version>
<short-name>jsfcustomcomponent</short-name>
<uri>http://jsfcustomcomponent/</uri>
<description><![CDATA[jsf custom component tags]]> </description>
<tag>
<name>specialBtnTag</name>
<tag-class>jsfcustomcomponent.SpecialBtnTag</tag-class>
<attribute>
<name>value</name>
<required>true</required>
<rtexprvalue>true</rtexprvalue>
<description><![CDATA[button value]]></description>
</attribute>
<attribute>
<name>specialBtnListener</name>
<required>true</required>
<rtexprvalue>true</rtexprvalue>
<description><![CDATA[action listener]]> </description>
</attribute>
</tag>
</taglib>
faces-config.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE faces-config PUBLIC "-//Sun Microsystems, Inc.//DTD JavaServer Faces Config 1.1//EN" "http://java.sun.com/dtd/web-facesconfig_1_1.dtd">
<faces-config>
<managed-bean>
<managed-bean-name>specialBtnBacking</managed-bean-name>
<managed-bean-class>specialbtn.SpecialBtnBacking</managed-bean-class>
<managed-bean-scope>request</managed-bean-scope>
</managed-bean>
<component>
<component-type>SpecialBtnComponent</component-type>
<component-class>jsfcustomcomponent.SpecialBtnComponent</component-class>
<component-extension>
<renderer-type>SpecialBtnRenderer</renderer-type>
</component-extension>
</component>
<render-kit>
<renderer>
<component-family>SpecialBtnComponent</component-family>
<renderer-type>SpecialBtnRenderer</renderer-type>
<renderer-class>jsfcustomcomponent.SpecialBtnRenderer</renderer-class>
</renderer>
</render-kit>
</faces-config>
SpecialBtnComponent.java
package jsfcustomcomponent;
import javax.faces.component.*;
import javax.faces.context.*;
import javax.faces.el.*;
import javax.faces.event.*;
public class SpecialBtnComponent
extends UIComponentBase implements ActionSource
public static final String COMPONENT_TYPE = "SpecialBtnComponent";
public static final String RENDERER_TYPE = "SpecialBtnRenderer";
public String getFamily()
return COMPONENT_TYPE;
public SpecialBtnComponent()
super();
setRendererType(SpecialBtnComponent.RENDERER_TYPE);
private String value;
public void setValue(String value, FacesContext facesContext)
this.value = value;
public String getValue()
if (null != this.value)
return this.value;
ValueBinding _vb = getValueBinding("value");
if (_vb != null)
return (String) _vb.getValue(getFacesContext());
else
return null;
private MethodBinding specialBtnListener = null;
public MethodBinding getActionListener()
return (this.specialBtnListener);
public void setActionListener(MethodBinding actionListener)
this.specialBtnListener = actionListener;
public Object saveState(FacesContext context)
Object values[] = new Object[3];
values[0] = super.saveState(context);
values[1] = saveAttachedState(context, this.specialBtnListener);
values[2] = this.value;
return (values);
public void restoreState(FacesContext context, Object state)
Object values[] = (Object[]) state;
super.restoreState(context, values[0]);
this.specialBtnListener = (MethodBinding) restoreAttachedState(context, values[1]);
this.value = (String) restoreAttachedState(context, values[2]);
public void broadcast(FacesEvent event) throws AbortProcessingException
super.broadcast(event);
if (event instanceof ActionEvent)
FacesContext context = getFacesContext();
MethodBinding mb = this.getActionListener();
if (mb != null)
try
mb.invoke(context, new Object[]
{event});
catch (EvaluationException ex)
System.out.println("SpecialBtnComponent/broadcast(FacesEvent event)...EvaluationException encountered - ex.getMessage()=" + ex.getMessage());
ex.printStackTrace();
ActionListener actionListener = context.getApplication().getActionListener();
if (actionListener != null)
actionListener.processAction( (ActionEvent) event);
public void queueEvent(FacesEvent e)
if (e instanceof ActionEvent)
e.setPhaseId(PhaseId.INVOKE_APPLICATION);
super.queueEvent(e);
public MethodBinding getAction()
return null;
public void setAction(MethodBinding methodBinding)
public boolean isImmediate()
return false;
public void setImmediate(boolean _boolean)
public void addActionListener(ActionListener actionListener)
addFacesListener(actionListener);
public ActionListener[] getActionListeners()
return (ActionListener[]) getFacesListeners(ActionListener.class);
public void removeActionListener(ActionListener actionListener)
removeFacesListener(actionListener);
SpecialBtnTag.java
package jsfcustomcomponent;
import javax.faces.component.*;
import javax.faces.el.*;
import javax.faces.webapp.*;
import com.sun.faces.util.*;
import javax.faces.context.FacesContext;
import javax.faces.event.ActionEvent;
public class SpecialBtnTag
extends UIComponentTag
public String value = null;
public String specialBtnListener = null;
private SpecialBtnComponent specialBtnComponent;
public SpecialBtnTag()
super();
public String getComponentType()
return SpecialBtnComponent.COMPONENT_TYPE;
public String getRendererType()
return SpecialBtnComponent.RENDERER_TYPE;
protected void setProperties(UIComponent component)
super.setProperties(component);
if (! (component instanceof SpecialBtnComponent))
throw new IllegalStateException("Component " + component.toString() +
" not expected type. Expected: jsfcustomcomponent.SpecialBtnComponent. Perhaps you�re missing a tag?");
specialBtnComponent = (SpecialBtnComponent) component;
if (value != null)
if (isValueReference(value))
ValueBinding vb = Util.getValueBinding(value);
specialBtnComponent.setValueBinding("value", vb);
else
throw new IllegalStateException("The value for �value� must be a ValueBinding.");
if (specialBtnListener != null)
if (isValueReference(specialBtnListener))
MethodBinding mb = FacesContext.getCurrentInstance().getApplication().createMethodBinding(specialBtnListener, new Class[]{ActionEvent.class});
( (SpecialBtnComponent) component).setActionListener(mb);
else
MethodBinding mb = Util.createConstantMethodBinding(specialBtnListener);
( (SpecialBtnComponent) component).setActionListener(mb);
public void release()
super.release();
value = null;
specialBtnListener = null;
public void setValue(String value)
this.value = value;
public String getValue()
return this.value;
public void setSpecialBtnListener(String specialBtnListener)
this.specialBtnListener = specialBtnListener;
public String getSpecialBtnListener()
return this.specialBtnListener;
SpecialBtnRenderer
package jsfcustomcomponent;
import java.util.*;
import javax.faces.component.*;
import javax.faces.context.*;
import javax.faces.event.*;
import javax.faces.render.*;
import javax.faces.el.MethodBinding;
import javax.faces.el.*;
public class SpecialBtnRenderer
extends Renderer
String value;
public SpecialBtnRenderer()
super();
public void decode(FacesContext context, UIComponent component)
try
Map requestMap = context.getExternalContext().getRequestParameterMap();
String clientId = component.getClientId(context);
SpecialBtnComponent specialBtnComponent = (SpecialBtnComponent) component;
String value = (String) requestMap.get(clientId);
if (null != value)
specialBtnComponent.setValue(value, context);
MethodBinding mb = specialBtnComponent.getActionListener();
if (mb != null)
System.out.println("SpecialBtnRenderer/decode...mb.getExpressionString()=" + mb.getExpressionString());
//mb.invoke(context, new Object[0]);
mb.invoke(context, new Object[1]);
ActionEvent actionEvent = new ActionEvent(specialBtnComponent);
specialBtnComponent.queueEvent(actionEvent);
catch (EvaluationException ex)
ex.printStackTrace();
public void encodeEnd(FacesContext context, UIComponent component) throws java.io.IOException
SpecialBtnComponent specialBtnComponent = (SpecialBtnComponent) component;
ResponseWriter writer = context.getResponseWriter();
String clientId = component.getClientId(context);
value = (String) component.getAttributes().get("value");
if (value == null)
value = "defaultValue";
buildSpecialBtn(writer, value, clientId, specialBtnComponent);
private void buildSpecialBtn(ResponseWriter writer, String value, String clientId, SpecialBtnComponent component) throws java.io.IOException
writer.startElement("table", component);
writer.startElement("tbody", component);
writer.startElement("tr", component);
writer.startElement("td", component);
value = String.valueOf(value);
writer.startElement("input", component);
writer.writeAttribute("type", "submit", null);
writer.writeAttribute("name", clientId, "clientId");
writer.writeAttribute("value", value, null);
writer.endElement("input");
writer.endElement("td");
writer.endElement("tr");
writer.endElement("tbody");
writer.endElement("table");
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" version="2.4">
<display-name>pagerWEB</display-name>
<servlet>
<servlet-name>Faces Servlet</servlet-name>
<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>*.faces</url-pattern>
</servlet-mapping>
<jsp-config>
<taglib>
<taglib-uri>http://jsfcustomcomponent/</taglib-uri>
<taglib-location>/WEB-INF/jsfcustomcomponent.tld</taglib-location>
</taglib>
</jsp-config>
</web-app> -
Calling action listener for a BUTTON component in java bean page
Hi,
I have made it like this.
public void handleButtonPressed(ActionEvent event){
System.out.println("success!!!!!");
//code for calling actionlistener
FacesContext fctx = FacesContext.getCurrentInstance();
ELContext elctx = fctx.getELContext();
Application application = fctx.getApplication();
ExpressionFactory exprFactory = application.getExpressionFactory();
MethodExpression methodExpr = null;
methodExpr = exprFactory.createMethodExpression(elctx, "#{exbean.handleButtonPressed}",null,new Class[] { ActionEvent.class });
MethodExpressionActionListener actionListener = null;
actionListener = new MethodExpressionActionListener(methodExpr);
button.addActionListener(actionListener);
Even after making the listener Function as Void wHen i click the button i m getting the error saying."ARGUMENTS MISMATCH,ADF_FACES60097"??
can you help me out?
and in the msg log i m getting this
"SkinFactoryImpl> <getSkin> Cannot find a skin that matches family portal and version v1.1. We will use the skin portal.desktop.
<MethodExpressionActionListener> <processAction> Received 'javax.el.PropertyNotFoundException' when invoking action listener '#{exbean.handleButtonPressed}' for component 'null'
<MethodExpressionActionListener> <processAction> javax.el.PropertyNotFoundException: Target Unreachable, identifier 'custombean' resolved to null"
I Have tried with this giving Void TYPE as an argument
methodExpr = exprFactory.createMethodExpression(elctx, "#{exbean.handleButtonPressed},Void.TYPE,new Class[] { ActionEvent.class });
I M getting the same error.
Edited by: chaya on Dec 22, 2011 2:47 PMyeah but i m creating button itself dynamically by java code....
//code
UIComponent button;
button = findComponentInRoot("cb1");
RichPanelGroupLayout pgl;
pgl = (RichPanelGroupLayout)button.getParent();
List<UIComponent> children;
children = pgl.getChildren();
RichPanelGroupLayout pgll;
pgll = new RichPanelGroupLayout();
RichInputText it;
it = new RichInputText();
it.setLabel("New textbox " + (children.size()));
RichCommandButton but = new RichCommandButton();
but.setPartialSubmit(true);
but.setText("Delete");
/*calling actionevent*/
FacesContext fctx = FacesContext.getCurrentInstance();
ELContext elctx = fctx.getELContext();
Application application = fctx.getApplication();
ExpressionFactory exprFactory = application.getExpressionFactory();
MethodExpression methodExpr = null;
methodExpr = exprFactory.createMethodExpression( elctx,"#{inbean.actionPerformed}",null, new Class[] {ActionEvent.class});
MethodExpressionActionListener actionListener = null;
actionListener = new MethodExpressionActionListener(methodExpr);
but.addActionListener(actionListener);
/*end of call*/
children.add(pgll);
children.add(it);
children.add(but);
AdfFacesContext.getCurrentInstance().addPartialTarget(pgl);
//code to call method
public void actionPerformed(ActionEvent event) {
System.out.println("entered sec bean");
return " ";}
this way i m trying to create a button programatically and tryin to add actionlistener which is not working.
the actionlistener is throwing error.... with the line
methodExpr = exprFactory.createMethodExpression( elctx,"#{inbean.actionPerformed}",null, new Class[] {ActionEvent.class}); -
Is there a way to have the same action listener for few buttons?
guys, lets say i have button1, button2 and button3
how do i add the same action listener for 3 of them. doing 3 different action listener is very tedius! my assignment have almots 100 buttons but I need their action listener to be the same.Hi,
Your class needs an action listener, so add implements ActionListener to you class creation string.
Then on each button set an action command;
button1.setActionCommand(BUTTON1);Now add an listener;
buttons1.addActionListener(this);Finally create a method to perform a task
public void actionPerformed(ActionEvent e)
if (e.getActionCommand().equals(BUTTON1))
xxxx
}This should do the trick.
adelebt -
How to create a single action listener for a group of buttons
hi there.. i am new at java and i have a problem with my applet..
i am doing a virtual ticket programme..
i have a tab that says books seats.. in the tab, i am suppose to create 50 buttons.
i have done that already by using for (int i=1; i<=10;i++) 5 times for 50 buttons.
but i do not know how to set an actionlistener in the for loop for each of these buttons..
For example, if the user were to chose seat "no3" , a text area(already created) below will show something like "no3" and so on..
how do i bind these buttons into one single action listener so i do not have to create 50 actionlisteners and buttons individually..
appreciate the help..You're killing me.
class MyFrame extends JFrame implements ActionListener
JTextArea myTextArea = new JTextArea();
JButton myButton = new JButton("My Button");
JButton otherButton = new JButton("Other Button");
MyFrame()
super();
myButton.addActionListener(this);
otherButton.addActionListener(this);
setLayout(new FlowLayout());
add(myButton);
add(otherButton);
add(myTextArea);
public void actionPerformed(ActionEvent e)
Object source = e.getSource();
if(source == myButton)
myTextArea.append("My Button Pressed\n");
else if(source == otherButton)
myTextArea.append("Other Button Pressed\n");
} -
Button without action listener
I wanto to know if somebody will create
a button without action listener???.
JCbut.. Buttons are created without ActionLiteners, you have to add them yourself...
and.. without ActionListener, whats going to happen when you click the Button?
you could use awt.Button.processEvent() in a subclass of Button, but then you would have to give that subclass some sort of access to the program class or its methods anyway -
Issue with setting an Action Listener for a Command Button
Hi all,
I'm trying to set an action listener for a CoreCommanButton in a backing bean. Here's my code:
CoreCommandButton editBtn = new CoreCommandButton();
MethodBinding mb = FacesContext.getCurrentInstance().getApplication().createMethodBinding("#{backBean.doButtonAct}",null);
editBtn.setActionListener(mb);
//Action listener method
public void doButtonAct(ActionEvent actionEvent)
I keep getting a javax.faces.el.MethodNotFoundException error. However when I remove the ActionEvent parameter in doButtonAct(), I get a wrong number of arguments error.
So i'm guessing there is something wrong with the parameters i accept in my action listener method. what can be causing this issue?
Cheers.I figured this out.
Since doButtonAct() requires an ActionEvent object as a parameter, i needed to define the parameter type when I create the method binding.
Solution:
Class argsString[] = new Class[] { ActionEvent.class };
MethodBinding mb = FacesContext.getCurrentInstance().getApplication().createMethodBinding("#{backBean.doButtonAct}",argsString); -
Action listener activation in many phases
I need action listener (methods) to be activated in many phases. I.e., when the user clicks a submit button, I want code to be executed (in my case) after the validation phase and after (during) the invoke application phase. In earlier version of the standard, I would just register 2 listeners, returning the appropriate getPhaseId() value. Since this method is removed from the current standard, things get more complicated.
QUESTION: Why in heavens name was this method removed from the standard? I suppose, because it is difficult to support with listener methods (in contrast to instances)? Bit of a rough solution, no? Or am I missing something?
I have a solution now, I think, that is based on getting the action event immediate, and requeuing the event again and again.
In the JSP, in the JSF form, I have a submit button as follows:
<h:commandButton id="buttonId" value="ButtonText"
actionListener="#{handler.buttonListener}"
immediate="true"/>The method Handler.buttonListener is:
public final void buttonListener(ActionEvent ae) {
LOG.debug("Handler. buttonListener called ("
+ "ActionEvent.getPhaseId() = " + ae.getPhaseId()
+ "; ActionEvent.getComponent() = " + ae.getComponent()
+ ")");
PhaseId phaseId = ae.getPhaseId();
if (phaseId.equals(PhaseId.APPLY_REQUEST_VALUES)) {
LOG.debug("-- processing during " + ae.getPhaseId());
// meaningful stuff here
// prepare for execution in next phase
ae.queue();
/* this sets phase id to the current phase, so it is extremely important that
* we set the necessary phase id AFTER queuing the event */
ae.setPhaseId(PhaseId.PROCESS_VALIDATIONS);
LOG.debug("-- ActionEvent (getPhaseId() = " + ae.getPhaseId() + ") queued");
else if (phaseId.equals(PhaseId.PROCESS_VALIDATIONS)) {
LOG.debug("-- processing during " + ae.getPhaseId());
// meaningful stuff here
// prepare for execution in next phase
ae.queue();
/* this sets phase id to the current phase, so it is extremely important that
* we set the necessary phase id AFTER queuing the event */
ae.setPhaseId(PhaseId.INVOKE_APPLICATION);
LOG.debug("-- ActionEvent (getPhaseId() = " + ae.getPhaseId() + ") queued");
else if (phaseId.equals(PhaseId.INVOKE_APPLICATION)) {
LOG.debug("-- processing during " + ae.getPhaseId());
// meaningful stuff here
LOG.debug("Handler. buttonListener done");
}The /* */ comment in the code is there because the queue methods (on the event as well as the component) set the phase id of the event to the current phase. If I set the phase id of the event before queuing it, that setting is undone, and I get an infinite loop! This is weird, and my solution is at least shaky: it doesn't feel stable across JSF implementations and future releases. I could not find a queue method that leaves the phase id alone.
QUESTION: am I missing something?
The output however is:
Mar 21, 2005 12:51:11 PM org.exadel.jsf.PhaseTracker beforePhase
INFO: BEFORE RESTORE_VIEW 1
Mar 21, 2005 12:51:11 PM org.exadel.jsf.PhaseTracker afterPhase
INFO: AFTER RESTORE_VIEW 1
Mar 21, 2005 12:51:11 PM org.exadel.jsf.PhaseTracker beforePhase
INFO: BEFORE APPLY_REQUEST_VALUES 2
12:51:12,119 DEBUG Handler:550 - Handler.buttonListener called
(ActionEvent.getPhaseId() = APPLY_REQUEST_VALUES 2;
ActionEvent.getComponent() = javax.faces.component.html.HtmlCommandButton@33b99a)
12:51:12,171 DEBUG Handler:556 - -- processing during APPLY_REQUEST_VALUES 2
12:51:12,184 DEBUG Handler:564 - -- ActionEvent (getPhaseId() = PROCESS_VALIDATIONS 3) queued
12:51:12,189 DEBUG Handler:580 - Handler.buttonListener done
12:51:12,220 DEBUG Handler:550 - Handler.buttonListener called
(ActionEvent.getPhaseId() = PROCESS_VALIDATIONS 3;
ActionEvent.getComponent() = javax.faces.component.html.HtmlCommandButton@33b99a)
12:51:12,255 DEBUG Handler:567 - -- processing during PROCESS_VALIDATIONS 3
12:51:12,256 DEBUG Handler:574 - -- ActionEvent (getPhaseId() = INVOKE_APPLICATION 5) queued
12:51:12,257 DEBUG Handler:580 - Handler.buttonListener done
12:51:12,265 DEBUG Handler:550 - Handler.buttonListener called
(ActionEvent.getPhaseId() = INVOKE_APPLICATION 5;
ActionEvent.getComponent() = javax.faces.component.html.HtmlCommandButton@33b99a)
12:51:12,267 DEBUG Handler:577 - -- processing during INVOKE_APPLICATION 5
12:51:12,268 DEBUG Handler:580 - Handler.buttonListener done
Mar 21, 2005 12:51:12 PM org.exadel.jsf.PhaseTracker afterPhase
INFO: AFTER APPLY_REQUEST_VALUES 2
Mar 21, 2005 12:51:12 PM org.exadel.jsf.PhaseTracker beforePhase
INFO: BEFORE RENDER_RESPONSE 6
Mar 21, 2005 12:51:12 PM org.exadel.jsf.PhaseTracker afterPhase
INFO: AFTER RENDER_RESPONSE 6The info is generated by a phase listener I found somewhere (sorry for the lack of reference here to the author). As you can see, I get 3 consecutive calls of my listener method, but they are all during the apply request values phase, and we jump from the apply request values phase immediately to the render response phase, skipping all the other phases, although my listener is actually called 3 times.
QUESTION: what the fuck? What is happening here, and more important, how can I fix it?I am in touch with IBM about any patch they might have for this. I just thought I'd post details from what I researched.
Basically I found that if I had CommandButton and/or CommandLink components on my page and clicked them for a total greater than 15 times, the application just quit reacting to any of the clicks. After writing a PhaseListener I discovered that after 15 clicks the JSF lifecycle was going straight from the Restore View (1) to Render Response (6) phase instead of going through the ones in between.
I downloaded the JSF source code and tracked down the magic number 15. As mentioned earlier in this forum it has to do with the number of views per session. In the Sun JSF-RI com.sun.faces.application.StateManagerImpl class
the number of views is defaulted to 15. When the number of views hits the max the oldest view is deleted. Somehow I don't think they are deleting the oldest view or else why my app quits after 15 clicks I do not know. Anyway this is a known issue with the Sun JSF-RI and documented in their Release Notes.
Depending on the JSF implementation there may or may not be a workaround. I mean to say the the workaround is not part of the JSF spec but Sun's implementation has a feature where you can configure the com.sun.faces.NUMBER_OF_VIEWS_IN_SESSION value in the web.xml file under the <context-param> tag. If you set the value sufficiently high you lower the risk of the app quitting on you (like a user may be unlikely to make 100 or even 50 clicks on the same page). You might also want to set the state to be saved on the server by setting javax.faces.STATE_SAVING_METHOD to server in another <context-param> tag. Somehow setting this state to client caused errors (NullPointerException) in our app in one of the Faces classes itself.
Hope this helps someone out there. -
Property on Backing Bean is Not set when Action Listener is Fired
Why is it that when my action listener is invoked, the property for my other component on the page has not been reflected in model yet?
Here is what I have:
My JSP has the following two components:
<h:inputText value="#{manageQuestionBean.newStory}"></h:inputText>
<h:commandButton value="add" actionListener="#{manageQuestionBean.onAddStory}"></h:commandButton> My Java code has the following:
public void onAddStory(ActionEvent event) {
//This always prints out 'null'
System.out.println("The value of 'newStory' is: " + newStory);
//TO DO: this is where the logic would go for creating a new story object.
} When I put logging statements inside my setter for the newStory property, I see that it is being set to the right value, but then it being reset to empty string. Why is that? During what phase do the action listeners get invoked?Which JSF implementation/version are you using?
mczauz wrote:
When I put logging statements inside my setter for the newStory property, I see that it is being set to the right value, but then it being reset to empty string. Why is that? When exactly happens when exactly?
During what phase do the action listeners get invoked?The invoke application phase, after the update model values phase.
You may find this article useful to learn about phases and how to add a 'phase debugger' yourselfl: [http://balusc.blogspot.com/2006/09/debug-jsf-lifecycle.html]. -
Help! Using "Create" action in insert jsp page vs in submission page.
This is regarding creating a new record using data TAGS:
I'm in a dilemma as to whether I should use the data source tag <jbo:Row id="myrow" datasource="iss_vo1" action="Create">
in my first jsp page ( which accepts input from a user) or in the 2nd jsp page (which does the actual commit).
If I actually create the view record n the first page itself then I get into all kinds of problems if the user decides against saving the record and backs out.[because there is a null hanging record out there]
But if I don't use it, then I am unable to use my LOVs in the html form.
Can anyone help me resolve this issue?
Currently I have used the data source tag
<jbo:Row id="myrow" datasource="iss_vo1" action="Create">
in my first JSP page.
Below is my complete source code for both the JSP pages:
Source Code for iss_add.jsp:
======================
Please note that in this JSP , it creates a new record and then the user has to click on the "SAVE" button (which calls another jsp "iss_add_post.jsp") to save the changes. But what if the user does not click on the save BUTTON and instead click on the "back" tab. This is where all the problem occurs. How do I get rid of this problem?
If I try to just use an HTML form without creating a record in this page then how will I use the LOVs?
<%@ page contentType="text/html;charset=WINDOWS-1252"%>
<HTML>
<base target="contentsframe">
<HEAD>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=WINDOWS-1252">
<META NAME="GENERATOR" CONTENT="Oracle JDeveloper">
<TITLE>
</TITLE>
</HEAD>
<BODY>
<%@ taglib uri="/webapp/DataTags.tld" prefix="jbo" %>
<jbo:ApplicationModule id="NewBC4J.NewBC4JModule" configname="NewBC4J.NewBC4JModule.NewBC4JModuleLocal" />
<jbo:DataSource id="pri_vo" appid="NewBC4J.NewBC4JModule" viewobject="PrioritiesView" />
<jbo:DataSource id="app_vo" appid="NewBC4J.NewBC4JModule" viewobject="ApplicationsView" />
<jbo:DataSource id="per_vo" appid="NewBC4J.NewBC4JModule" viewobject="PersonView" >
<jbo:DataSource id="iss_vo1" appid="NewBC4J.NewBC4JModule" viewobject="IssuesView5" /></jbo:DataSource>
<jbo:Row id="myrow" datasource="iss_vo1" action="Create">
</jbo:Row>
<table width="100%" bgcolor="skyblue" border="0" align="center">
<tr>
<td>
<table width="100%" bgcolor="tan" border="0" align="center" cellpadding="3" cellspacing="0">
<form NAME="iForm" action="iss_add_post.jsp">
<tr>
<th colspan="2">
"Add New Issues"
</th>
</tr>
<jsp:include page="Message.jsp" flush="true">
<jsp:param name="colspan" value="2"/>
</jsp:include>
<tr>
<td align="Right"><b><font color="red">Priority:</font></b></td>
<td> <jbo:InputSelect datasource="iss_vo1" dataitem="PriCd"
displaydatasource="pri_vo" displaydataitem="Descr" displayvaluedataitem="Cd" />
</td>
</tr>
<tr>
<td align="right"><b><font color="red"> Description:</font></b></td>
<td> <jbo:InputTextArea datasource="iss_vo1" dataitem="IssDesc" rows="3" cols="50" />
</td>
</tr>
<tr>
<td align="right"><b><font color="red"> Application:</font></b></td>
<td> <jbo:InputSelect datasource="iss_vo1" dataitem="AppCode"
displaydatasource="app_vo" displaydataitem="Name" displayvaluedataitem="Code" />
</td>
</tr>
<tr>
<td align="right"><b><font color="red"> Assigned To: </font></b></td>
<td> <jbo:InputSelect datasource="iss_vo1" dataitem="AssignedToPerId"
displaydatasource="per_vo" displaydataitem="FirstName" displayvaluedataitem="PerId" />
</td>
</tr>
<tr>
<td align="right"><b><font color="red"> Raised By: </font></b></td>
<td> <jbo:InputSelect dataso urce="iss_vo1" dataitem="RaisedByPerId"
displaydatasource="per_vo" displaydataitem="FirstName" displayvaluedataitem="PerId" />
</td>
</tr>
<tr>
<td align="Right"><b><font color="red"> Resolution: </font></b></td>
<td> <jbo:InputTextArea datasource="iss_vo1" dataitem="Resolution" cols="50" rows="3" />
</td>
</tr>
</table>
<!-- Create a table for the save Button -->
<table width="100%" bgcolor="skyblue" align="center" cellpadding="10" cellspacing="0" >
<tr>
<input name="RowKeyValue" type="hidden" value="<jbo:ShowValue datasource="iss_vo1" dataitem="RowKey"/>" />
<td>
<input type = "submit" name="submit" value="Save">
</td>
</form>
</tr>
</table>
</td>
</tr>
</table>
</BODY>
</HTML>
<jbo:ReleasePageResources releasemode="Stateful" />
Source Code for iss_add_post.jsp:
============================
This is where the actual commit occurs. But user may decide not to come here at all by not clicking the save button. What happens to the record created ? How Can I rollback that information?
<%@ page language="java" contentType="text/html;charset=WINDOWS-1252" %>
<html xmlns:jbo="foo">
<body>
<center>
<br>
<%@ taglib uri="/webapp/DataTags.tld" prefix="jbo" %>
<br>
<jbo:ApplicationModule id="NewBC4J.NewBC4JModule" configname="NewBC4J.NewBC4JModule.NewBC4JModuleLocal" username="issue" password="issue"/>
<br>
<jbo:DataSource id="iss_vo1" appid="NewBC4J.NewBC4JModule" viewobject="IssuesView5"/>
<jbo:Row id="row3" datasource="iss_vo1" action="Current" >
<jbo:SetAttribute dataitem="*" />
</jbo:Row>
<%
try
%>
<jbo:Commit appid="NewBC4J.NewBC4JModule"/>
<p><font face="Arial, Helvetica, sans-serif"><b><font color="006699">Issue Record Inserted Successfully! Issue# Assigned: <jbo:ShowValue datasource="iss_vo1" dataitem="Id" /></b></font></font> </p>
<%
catch(Exception exc)
out.println("<pre>");
exc.printStackTrace(new java.io.PrintWriter(out));
out.println("</pre>");
%>
<br>
<br>
<form action="iss_ListIssues.jsp" method="post"><input type="submit" value="Click to Continue"></form>
</center>
</body>
<jbo:ReleasePageResources releasemode="Stateful"/>
</html>
null[email protected]
I can't actually see any LOV's on your first page so I am not completely sure that I understand your situation. However if you are talking about using the InputSelectLOV datatag, there is no reason why you cannot use that within a html form, without having to create a record in the RowSet.
The Insert page is by default created without any datasources - just a standard HTML form. The form is submitted and the InsertSubmit page reads the values from the request object, matches the parameter names with your VO attribute names and does your create.
Your LOV data will be coming from another table so doing a Row tag Create on your Insert page won't make any difference to it. Have I misunderstood something here? I have used LOV's on my Insert pages and I definitely have not created a row in the Rowset anywhere but the Submit pages.
There is a problem on both Edit and Insert pages whereby if there are no rows in the table for which you have a datasource defined you can get problems, but it doesn't sound as though that is your problem. Maybe I need some more information from you?
Simon -
hello
the problem in my code is that i defined
actionlistener for a button but it does not
do what it should do . it throws an error in the console
and i think my code is 100% correct what is the problem
please help me this is the codewith
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
class Library extends JFrame implements ActionListener {
private JMenuBar jmb = new JMenuBar();
private JMenu books = new JMenu("Books",true);
private JMenu members = new JMenu("Members",true);
private JMenu loans = new JMenu("Loans",true);
private JMenuItem addNb = new JMenuItem("Add New Book");
private JMenuItem listB = new JMenuItem("List All Books");
private JMenuItem listAb = new JMenuItem("List Available Books");
private JMenuItem listBb = new JMenuItem("List Borrowed Books");
private JMenuItem addNm = new JMenuItem("Add New Member");
private JMenuItem removeM = new JMenuItem("Remove a Member");
private JMenuItem listAm = new JMenuItem("List All Members");
private JMenuItem loanB = new JMenuItem("Loan A Book");
private JMenuItem returnB = new JMenuItem("Return A Book");
private JTextField bNumber = new JTextField(14);
private JTextField bAuthor = new JTextField(14);
private JTextField bTitle = new JTextField(14);
private JTextField mId = new JTextField(14);
private JTextField mName = new JTextField(14);
private JTextField idB = new JTextField(14);
private JTextField nBToB = new JTextField(14);
private JTextField nBTor = new JTextField(14);
private JTextArea dispaly = new JTextArea();
private JButton oKb1 = new JButton("OK");
private JButton okb2 = new JButton("OK");
private JButton cloaseb = new JButton("Close");
private JButton oKm1 = new JButton("OK");
private JButton oKm2 = new JButton("OK");
private JButton cancelM = new JButton("Cancel");
private JButton oKm3 = new JButton("OK");
private JButton oKm4 = new JButton("OK");
private JButton cancelM2 = new JButton("Cancel");
private JButton oKl = new JButton("OK");
private JButton oKr = new JButton("OK");
private JButton yes = new JButton("Yes");
private JButton no = new JButton("No");
private JLabel bN = new JLabel("Book Number");
private JLabel bA = new JLabel("Book Author");
private JLabel bT = new JLabel("Book Title");
private JLabel iN = new JLabel("ID Number");
private JLabel mN = new JLabel("Member's Name");
private JLabel iNb = new JLabel("ID number of the borrower");
private JLabel nBb = new JLabel("Number of the books to borrow");
private JLabel nBr = new JLabel("Number of the books to return");
private JLabel mIdl = new JLabel("ID number of the stuednt");
private JPanel tempoIPanel= new JPanel(new FlowLayout());
Container cp;
JFrame mainFrame;
JInternalFrame tempoI;
Library() {
//LibraryClass lClass = new LibraryClass();/*
mainFrame = new JFrame();
mainFrame.setJMenuBar(jmb);
mainFrame.setSize(800,550);
mainFrame.getContentPane().setLayout(new FlowLayout());
jmb.add(books);
jmb.add(members);
jmb.add(loans);
books.add(addNb);
addNb.addActionListener(this);
books.add(listB);
listB.addActionListener(this);
books.add(listAb);
listAb.addActionListener(this);
books.add(listBb);
listBb.addActionListener(this);
members.add(addNm);
addNm.addActionListener(this);
members.add(removeM);
removeM.addActionListener(this);
members.add(listAm);
listAm.addActionListener(this);
loans.add(loanB);
loanB.addActionListener(this);
loans.add(returnB);
returnB.addActionListener(this);
//actions listeners
oKb1.addActionListener(this);
mainFrame.setVisible(true);
public void actionPerformed(ActionEvent ae) {
if(ae.getSource() == addNb) {
tempoI = new JInternalFrame("Add new Book",true,true);
mainFrame.getContentPane().add(tempoI);
tempoI.getContentPane().setLayout(new FlowLayout());
tempoI.getContentPane().add(bN);
tempoI.getContentPane().add(bNumber);
tempoI.getContentPane().add(bA);
tempoI.getContentPane().add(bAuthor);
tempoI.getContentPane().add(bT);
tempoI.getContentPane().add(bTitle);
tempoI.getContentPane().add(oKb1);//add action listener here
tempoI.setVisible(true);
if(ae.getSource() == listB) {
//LibraryClass.listBooks();
if(ae.getSource() == listAb){}
if(ae.getSource() == listBb){}
if(ae.getSource() == addNm) {
tempoI = new JInternalFrame("Add new Member",true,true);
mainFrame.getContentPane().add(tempoI);
tempoI.getContentPane().setLayout(new FlowLayout());
tempoI.getContentPane().add(iN);
tempoI.getContentPane().add(mId);
tempoI.getContentPane().add(mN);
tempoI.getContentPane().add(mName);
tempoI.getContentPane().add(oKm1);//add action listener
tempoI.getContentPane().setSize(300,400);
tempoI.setVisible(true);
if(ae.getSource() == removeM) {
tempoI = new JInternalFrame("Rmove member",true,true);
mainFrame.getContentPane().add(tempoI);
tempoI.getContentPane().setLayout(new FlowLayout());
tempoI.getContentPane().add(mIdl);
tempoI.getContentPane().add(mId);
tempoI.getContentPane().add(oKm2);//add action listener
//LibraryClass.removeM(Double.parseDouble(mId.getText()));
tempoI.getContentPane().setSize(300,400);
tempoI.setVisible(true);
if(ae.getSource() == listAm) {
//LibraryClass.listMembers();
if(ae.getSource() == loanB) {
tempoI = new JInternalFrame("Loan book",true,true);
mainFrame.getContentPane().add(tempoI);
tempoI.getContentPane().setLayout(new FlowLayout());
tempoI.getContentPane().add(iNb);
tempoI.getContentPane().add(idB);
tempoI.getContentPane().add(nBb);
tempoI.getContentPane().add(nBToB);
tempoI.getContentPane().add(oKl);
//LibraryClass.borrowBook(Book bk,Member m);
tempoI.getContentPane().setSize(300,400);
tempoI.setVisible(true);
if(ae.getSource() == returnB) {
tempoI = new JInternalFrame("Return Book",true,true);
mainFrame.getContentPane().add(tempoI);
tempoI.getContentPane().setLayout(new FlowLayout());
tempoI.getContentPane().add(iNb);
tempoI.getContentPane().add(idB);
tempoI.getContentPane().add(nBr);
tempoI.getContentPane().add(nBTor);
tempoI.getContentPane().add(oKr);
tempoI.getContentPane().setSize(400,300);
tempoI.setVisible(true);
//Book.addBook(bNumber.getText(),bAuthor.getText(),bTitle.getText());
class ClubLibrarySystem {
public static void main(String[] args) {
new Library();
}hello
the problem in my code is that i defined
actionlistener for a button but it does not
do what it should do . it throws an error in the
consoleWhat error?
and i think my code is 100% correct what is theWell, but it isn't.
Have you tried using a debugger?
problem
please help me this is the codewith
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
class Library extends JFrame implements
ActionListener {
private JMenuBar jmb = new JMenuBar();
private JMenu books = new JMenu("Books",true);
private JMenu members = new
JMenu("Members",true);
private JMenu loans = new
JMenu("Loans",true);
private JMenuItem addNb = new JMenuItem("Add New
Book");
private JMenuItem listB = new JMenuItem("List All
Books");
private JMenuItem listAb = new JMenuItem("List
Available Books");
private JMenuItem listBb = new JMenuItem("List
Borrowed Books");
private JMenuItem addNm = new JMenuItem("Add New
Member");
private JMenuItem removeM = new JMenuItem("Remove a
Member");
private JMenuItem listAm = new JMenuItem("List All
Members");
private JMenuItem loanB = new JMenuItem("Loan A
Book");
private JMenuItem returnB = new JMenuItem("Return A
Book");
private JTextField bNumber = new JTextField(14);
private JTextField bAuthor = new JTextField(14);
private JTextField bTitle = new JTextField(14);
private JTextField mId = new JTextField(14);
private JTextField mName = new JTextField(14);
private JTextField idB = new JTextField(14);
private JTextField nBToB = new JTextField(14);
private JTextField nBTor = new JTextField(14);
private JTextArea dispaly = new JTextArea();
private JButton oKb1 = new JButton("OK");
private JButton okb2 = new JButton("OK");
private JButton cloaseb = new JButton("Close");
private JButton oKm1 = new JButton("OK");
private JButton oKm2 = new JButton("OK");
private JButton cancelM = new JButton("Cancel");
private JButton oKm3 = new JButton("OK");
private JButton oKm4 = new JButton("OK");
private JButton cancelM2 = new JButton("Cancel");
private JButton oKl = new JButton("OK");
private JButton oKr = new JButton("OK");
private JButton yes = new JButton("Yes");
private JButton no = new JButton("No");
private JLabel bN = new JLabel("Book
Number");
private JLabel bA = new JLabel("Book
Author");
private JLabel bT = new JLabel("Book
Title");
private JLabel iN = new JLabel("ID Number");
private JLabel mN = new JLabel("Member's
Name");
private JLabel iNb = new JLabel("ID number of the
borrower");
private JLabel nBb = new JLabel("Number of the
books to borrow");
private JLabel nBr = new JLabel("Number of the
books to return");
private JLabel mIdl = new JLabel("ID number of
the stuednt");
private JPanel tempoIPanel= new JPanel(new
FlowLayout());
Container cp;
JFrame mainFrame;
JInternalFrame tempoI;
Library() {
//LibraryClass lClass = new LibraryClass();/*
mainFrame = new JFrame();
mainFrame.setJMenuBar(jmb);
mainFrame.setSize(800,550);
mainFrame.getContentPane().setLayout(new
FlowLayout());
jmb.add(books);
jmb.add(members);
jmb.add(loans);
books.add(addNb);
addNb.addActionListener(this);
books.add(listB);
listB.addActionListener(this);
books.add(listAb);
listAb.addActionListener(this);
books.add(listBb);
listBb.addActionListener(this);
members.add(addNm);
addNm.addActionListener(this);
members.add(removeM);
removeM.addActionListener(this);
members.add(listAm);
listAm.addActionListener(this);
loans.add(loanB);
loanB.addActionListener(this);
loans.add(returnB);
returnB.addActionListener(this);
//actions listeners
oKb1.addActionListener(this);
mainFrame.setVisible(true);
public void actionPerformed(ActionEvent ae) {
if(ae.getSource() == addNb) {
tempoI = new JInternalFrame("Add new
w Book",true,true);
mainFrame.getContentPane().add(tempoI);
tempoI.getContentPane().setLayout(new
w FlowLayout());
tempoI.getContentPane().add(bN);
tempoI.getContentPane().add(bNumber);
tempoI.getContentPane().add(bA);
tempoI.getContentPane().add(bAuthor);
tempoI.getContentPane().add(bT);
tempoI.getContentPane().add(bTitle);
tempoI.getContentPane().add(oKb1);//add action
n listener here
tempoI.setVisible(true);
if(ae.getSource() == listB) {
//LibraryClass.listBooks();
if(ae.getSource() == listAb){}
if(ae.getSource() == listBb){}
if(ae.getSource() == addNm) {
tempoI = new JInternalFrame("Add new
w Member",true,true);
mainFrame.getContentPane().add(tempoI);
tempoI.getContentPane().setLayout(new
w FlowLayout());
tempoI.getContentPane().add(iN);
tempoI.getContentPane().add(mId);
tempoI.getContentPane().add(mN);
tempoI.getContentPane().add(mName);
tempoI.getContentPane().add(oKm1);//add action
n listener
tempoI.getContentPane().setSize(300,400);
tempoI.setVisible(true);
if(ae.getSource() == removeM) {
tempoI = new JInternalFrame("Rmove
e member",true,true);
mainFrame.getContentPane().add(tempoI);
tempoI.getContentPane().setLayout(new
w FlowLayout());
tempoI.getContentPane().add(mIdl);
tempoI.getContentPane().add(mId);
tempoI.getContentPane().add(oKm2);//add action
n listener
//LibraryClass.removeM(Double.parseDouble(mId.getText
tempoI.getContentPane().setSize(300,400);
tempoI.setVisible(true);
if(ae.getSource() == listAm) {
//LibraryClass.listMembers();
if(ae.getSource() == loanB) {
tempoI = new JInternalFrame("Loan book",true,true);
mainFrame.getContentPane().add(tempoI);
tempoI.getContentPane().setLayout(new
w FlowLayout());
tempoI.getContentPane().add(iNb);
tempoI.getContentPane().add(idB);
tempoI.getContentPane().add(nBb);
tempoI.getContentPane().add(nBToB);
tempoI.getContentPane().add(oKl);
//LibraryClass.borrowBook(Book bk,Member m);
tempoI.getContentPane().setSize(300,400);
tempoI.setVisible(true);
if(ae.getSource() == returnB) {
tempoI = new JInternalFrame("Return
n Book",true,true);
mainFrame.getContentPane().add(tempoI);
tempoI.getContentPane().setLayout(new
w FlowLayout());
tempoI.getContentPane().add(iNb);
tempoI.getContentPane().add(idB);
tempoI.getContentPane().add(nBr);
tempoI.getContentPane().add(nBTor);
tempoI.getContentPane().add(oKr);
tempoI.getContentPane().setSize(400,300);
tempoI.setVisible(true);
//Book.addBook(bNumber.getText(),bAuthor.getText(),bT
tle.getText());
class ClubLibrarySystem {
public static void main(String[] args) {
new Library(); -
Nested request dispatches when using RequestDispatcher in a Button action
Hi all,
I am new to JSF so I am probably missing something very simple, please help:
The test case is simple: I created one visual web page with one button and one normal JSP file(named test.jsp) using Netbeans 5.5 with visual web pack on Sun Application Server 9 PE. The code action for the button is as follows:
public String button1_action() throws Exception
ExternalContext context = FacesContext.getCurrentInstance().getExternalContext();
HttpServletRequest request = (HttpServletRequest) context.getRequest();
HttpServletResponse response = (HttpServletResponse) context.getResponse();
RequestDispatcher dispatcher = request.getRequestDispatcher("test.jsp");
dispatcher.forward(request,response);
return null;
}Once the JSF page is loaded and the button is clicked, this exception occurs:
ApplicationDispatcher[WebApplication1] Servlet.service() for servlet Faces Servlet threw exception
javax.servlet.ServletException: WEB2651: Exceeded maximum depth for nested request dispatches: 20
at org.apache.catalina.core.ApplicationDispatcher.doInvoke(ApplicationDispatcher.java:837)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:697)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:532)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:465)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:353)
at webapplication1.Page1.button1_action(Page1.java:242)
Can anyone provide any advice on how to resolve this issue?Hi Rachel,
As per the Servlet2.3 Javadoc:
The pathname must begin with a "/" and is interpreted as relative to the current context root.
If you make that change and include the complete path, then it would work fine.
Ex:
If your context looks like http://my.company.com/webapp1/ and if you were to have your forwardPortlet.jsp in a directory like:
webapp1
|
|-> htdocs
|
|-> forwardPortlet.jsp
then, your code would look like;
RequestDiscpatcher d = request.getRequestDispatcher("/htdocs/forwardPortlet.jsp");
HTH,
thanks,
harsha -
Action Listener Method called multiple times
I have a page (fragment .jsff), containing a simple input text and a button called "search". When I click on "Search" the action listener is triggered multiple times. (The results are displayed in a table inside a panel collection).
The results are actually coming back ok.
When I debug the code, I can see the action listener method called twice.
Do you know why is that?
What should I be taking care of?
This is my code :
*** Fragment ****
<af:commandButton text="#{identityBundle.search_label}" id="cb1"
actionListener="#{UserDetailsBean.searchUsersListener}"
disabled="#{!bindings.searchUsers.enabled}"/>
*** Managed bean ***
public void searchUsersListener(ActionEvent actionEvent) {
// Add event code here...
DCBindingContainer bindings = (DCBindingContainer)getBindings();
DCIteratorBinding iter = bindings.findIteratorBinding("userIterator");
DCDataRow row = (DCDataRow)iter.getCurrentRow();
User user = (User)row.getDataProvider();
boolean isSearchCriteriaPresent = false;
if(user != null){
String fn = user.getFirstname();
if(fn != null && !fn.trim().equals("")){
isSearchCriteriaPresent = true;
user.setLastname(fn);
user.setNonMTUserLogin(fn);
try {
Map <Object, Object> userMap = PropertyUtils.describe(user);
for(Map.Entry<Object, Object> entry: userMap.entrySet()){
if(entry.getKey() != null && entry.getValue() != null && !entry.getKey().toString().equalsIgnoreCase("class")){
isSearchCriteriaPresent = true;
break;
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
} catch (NoSuchMethodException e) {
e.printStackTrace();
if(!isSearchCriteriaPresent){
user.setFirstname("*");
OperationBinding opBinding = (OperationBinding)bindings.getOperationBinding("searchUsers");
opBinding.getParamsMap().put("user", user);
opBinding.execute();
AdfFacesContext adfFacesCtx = AdfFacesContext.getCurrentInstance();
Map<String, Object> scopePageFlowScopeVar= adfFacesCtx.getPageFlowScope();
scopePageFlowScopeVar.put("userSearchCriteria", user);
ADFContext adfCtx = ADFContext.getCurrent();
Map sessionScope = adfCtx.getSessionScope();
sessionScope.put("userSearchCriteria", user);
setUserSearchCriteria(user);
if(selectedUserID != null){
selectedUserID.setValue(null);
RichTable table = getUserResultsTable();
DCIteratorBinding searchUsersIterator = (DCIteratorBinding)bindings.get("searchUsersIterator");
Row[] rows = searchUsersIterator.getAllRowsInRange();
if(rows.length > 0){
RowKeySetImpl rks = new RowKeySetImpl();
ArrayList keyList = new ArrayList();
keyList.add(rows[0].getKey());
rks.add(keyList);
table.setSelectedRowKeys(rks);
table.setDisplayRowKey(keyList);
refreshState(table);
if(!isSearchCriteriaPresent){
user.setFirstname(null);
else{
deleteUserButton.setDisabled(true);
resetPasswordButton.setDisabled(true);
enableUserButton.setDisabled(true);
disableUserButton.setDisabled(true);
Thanks in advance for your helpHi,
Can you try this?
1. set partialSubmit=true for the "search" button
2. set "search" button id as partialTrigger in your result table
-Prasad -
Best way to implement an Action Listener
I have multiple anonymous classes for each button in my particular JPanel, this seems very... large and I am sure it is using a large amount of memory. Is there a better way to implement several action listeners to all these buttons so that they will still do their origional function but cut down on all the anonymous classes.
Actually nothing of the sort. There is too much information to be able to be placed nicely on the Panel, so I have many buttons that open dialog boxes where the information is placed, buttons that perform specified tasks (adding, updating, loading, deleting, clearing all fields) on the database, and others, there is also action listeners on the jspinners comboboxes and others.
Actually, I take back hundred, I recently extended JPanel to do my editing panels to go into my JTabbedPane cutting down on the line count in the FrameMain class (over 8K lines before the conversion) So there is only about 20 to 25 total action listeners per extended JPanel, instead of 150 or so declared in one frame.
The biggest concern here is memory usage, as of right now it uses a ton, and by searching and reading, I belive its all the action listeners (which at the time I thought you had to have a brand new one every time you wanted it to do something different).
Going back to the one action listener with the if/else statements obviously performace may be lost, but what is the ratio to performance lost to memory gain. Will the speed increase be negligable compared to the amount of memory usage that will go down?
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