How to execute a method after page Load?

My question is very similar to what was discussed in following thread:
How to execute a method after page Load?
My requirement is that I want to run a method in backing bean of a page, immediately after the page gets loaded. In that method I want to invoke one of the method action included in the pagedef of this page, conditionally.
I tried using the approach given in the above thread, i.e to use <f:view afterPhase="#{backing_security.setPermPriv}">, but the problem is that our page is not using 'f:view' , so I explicitly added one f:view with afterPhase property set , but it is not working, page it self is not getting loaded, it is throwing the error:
Root cause of ServletException.
java.lang.IllegalStateException: <f:view> was not present on this page; tag [email protected]e8encountered without an <f:view> being processed.
     at org.apache.myfaces.trinidad.webapp.UIXComponentELTag.setProperties(UIXComponentELTag.java:108)
     at javax.faces.webapp.UIComponentClassicTagBase.findComponent(UIComponentClassicTagBase.java:733)
     at javax.faces.webapp.UIComponentClassicTagBase.doStartTag(UIComponentClassicTagBase.java:1354)
     at org.apache.myfaces.trinidad.webapp.UIXComponentELTag.doStartTag(UIXComponentELTag.java:71)
     at oracle.adfinternal.view.faces.taglib.UIXQueryTag.doStartTag(UIXQueryTag.java:41)
     at oracle.adfinternal.view.faces.unified.taglib.UnifiedQueryTag.doStartTag(UnifiedQueryTag.java:51)
     at oracle.jsp.runtime.tree.OracleJspBodyTagNode.executeHandler(OracleJspBodyTagNode.java:50)
     at oracle.jsp.runtime.tree.OracleJspCustomTagNode.execute(OracleJspCustomTagNode.java:262)
     at oracle.jsp.runtime.tree.OracleJspNode.execute(OracleJspNode.java:89)
     at oracle.jsp.runtimev2.ShortCutServlet._jspService(ShortCutServlet.java:89)
     at oracle.jsp.runtime.OracleJspBase.service(OracleJspBase.java:29)
     at oracle.jsp.runtimev2.JspPageTable.compileAndServe(JspPageTable.java:665)
     at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:387)
     at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:822)
     at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:746)
Please help to resolve this issue, or am I doing anything wrong?

Hi,
I assume that your view is a page fragment and here - indeed - the f:view tag cannot be used. If you use ADF then one option would be to use a custom RegionController on the binding layer to listen for the render phase to invoke the method. Another option would be to use a hidden field (output text set to display="false" and have this component value referencing a managed bean property. The managed bean property's getter method can now be used to invoke the method you want to run upon view rendering
Frank

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How to call java method on page load?

How to call java method on page load?
Thanks

Hey Dan,
Well, if you want to execute a java method when page is load, you need to put the clientlistener in af:document. Let me to show you an example (I can't find my post :P),
JSPX page:
<f:view>
<af:document>
<f:verbatim>
<script>
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        alert('Hello World!');
</script>
</f:verbatim>
<af:clientListener method="loadPage" type="load"/>
</af:document>
</f:view>If you try this code you can see that when the page has been load, you recieve the alert "Hello World!".
Furthermore, this is the javascript AJAX function that let you to call a servlet:
function ajaxFunction () {
    var httpRequest;
    if (window.XMLHttpRequest) {
        httpRequest = new XMLHttpRequest();
    } else if (window.ActiveXObject) {
        httpRequest = new ActiveXObject("Microsoft.XMLHTTP");
        httpRequest.overrideMimeType('text/xml');
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JVN

How to execute a method when page is loaded

hi ,
I have a custom method in backing bean of a .jspx page. I want to execute it by default when the .jspx page is loaded.can anyone say how to do it?

Hi,
depends on what this is doing: You can call it in a PhaseListener, or from the page using a EL reference (e.g. output textfield that shows empty) or by customizing the ADF pagelifecyce.
You may want to have a look at
http://thepeninsulasedge.com/frank_nimphius/2007/08/09/jsf-hook-into-the-javaserver-faces-page-load/
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Adf faces: execute bean method after table is loaded

Hi,
How can I execute a method after an adf table is rendered on the page?
This is what I want to do:
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Hi,
if you use page fragments exposed in an ADF region, you have two options I see
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Keragala

How to execute the method of a class loaded

Hi,
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How to do data validation after each load

Hi all,
How to do data validation after each load.
please send to : [email protected]
bhaskar

Hi Bhaskar,
Check these posts:
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How to execute closing cockpit after completed the configuration?

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Hi,
Environment: JSF1.2.12+Spring
I have a startpage, i will call a methode after startpage complete load. (I do not want to use javascript)
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Edited by: zlzc2000 on Nov 6, 2009 2:53 AM

goal: optimize load startpage(accelerate to load startpage)
in startpage i use sql to load user's information, that in startpage is required.
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Edited by: zlzc2000 on Nov 6, 2009 3:37 AM

How to call a javascript method after table load on JSFF Fragment load?

Hello,
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import javax.faces.context.FacesContext;
import oracle.adf.model.RegionBinding;
import oracle.adf.model.RegionContext;
import oracle.adf.model.RegionController;
import org.apache.myfaces.trinidad.render.ExtendedRenderKitService;
import org.apache.myfaces.trinidad.util.Service;
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public MyListener() {
super();
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regionContext.getRegionBinding().validate();
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FacesContext f = FacesContext.getCurrentInstance();
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service.addScript(f, "myJSFunction();");
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I need the javascript to be called only once after the table is done loading when user lands to a fragment (jsff).
Any ideas appreciated?
JDeveloper version is 11.1.1.5.0
Thank you.
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Edited by: Valon on Apr 11, 2013 3:10 PM

One of the requirements is to compare every row with the next row and highlight the changes. There are other requirements as well where JavaScript solution is used.
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Hope that is clear.
Thanks.
Valon

How to access the URL on page load and open it in the new tab of browser

Hi All,
I am using Jdeveloper 11.1.1.5 and i have one page "Hello.jspx" and one data control consist of two attributes :-one is "id" and other is "url".
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Hi,
I don't think this can be done this way. I would think that you need to execute JavaScript upon Hello.jspx load to open a new window and pass the URL to it
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Using af:clientListener after page load

Hi,
I need to run a js function after* the page finishes loading.
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Ah.. i guess it will not work as you cannot do any UI activity after the render response phase. May be try this
Javascript into JSPX and run after page is loaded?

How to execute applets method from jsp?

Hi ,
I have a query.I have a jsp page
on loading the jsp page the applet should be
loaded.And i have a button in my jsp page on clicking
the button a method written in the applet class should
be executed .How can i do this.Iam attaching the
classes also.There r two java files.One is EXPosApplet.java and other is EXPos.java
In the EXPosApplet.java i have a method called
RunNotepad().This method should be executed when i click the
button in my jsp page.Pls provide me with some code to load the applet and execute the method of applet.It is a bit urgent.
Thanks
Naveen
The following is my
EXPos.java class.Following this is my EXPosApplet.java class.
EXPos.java
package SumberPutra.External;
import java.io.*;
public class EXPos extends Object {
     * Constructor
     public EXPos() {
private static void RunIt(String fileName){
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          catch (SecurityException e) {
System.out.println("ExecFile: caught security exception: " + e) ;
catch (IOException ioe) {
System.out.println("ExecFile: caught i/o exception: " + ioe);
public void RunNotepad(){
     String fname = "notepad.exe";
RunIt(fname);
EXPosApplet.java
package SumberPutra.External;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
public class EXPosApplet extends JApplet {
     boolean isStandalone = false;
     private EXPos expos = new EXPos();
     JButton jButton1 = new JButton();
     JLabel jLabel1 = new JLabel();
     * Constructs a new instance.
     * getParameter
     * @param key
     * @param def
     * @return java.lang.String
     public String getParameter(String key, String def) {
          if (isStandalone) {
               return System.getProperty(key, def);
          if (getParameter(key) != null) {
               return getParameter(key);
          return def;
     public EXPosApplet() {
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          catch (Exception e) {
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     private void jbInit() throws Exception {
          this.setSize(new Dimension(400, 156));
          jButton1.setText("jButton1");
          jLabel1.setText("jLabel1");
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     * start
     public void start() {
     * stop
     public void stop() {
     * destroy
     public void destroy() {
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     static {
          try {
               UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
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/*     void jButton1_actionPerformed(ActionEvent e) {
try
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          catch (SecurityException ex) {
// strMsg = "ExecFile: caught security exception: " + e ;
jLabel1.setText("ExecFile: caught security exception: " + ex) ;
catch (IOException ioe) {
// strMsg = "ExecFile: caught i/o exception: " + ioe;
jLabel1.setText("ExecFile: caught i/o exception: " + ioe);

Iam new to java .Can u please give me the code to load the applet and execute applets method
Thankyou

How to execute Applet method from jsp?

Hi ,
I have a query.I have a jsp page
on loading the jsp page the applet should be
loaded.And i have a button in my jsp page on clicking
the button a method written in the applet class should
be executed .How can i do this.Iam attaching the
classes also.There r two java files.One is EXPosApplet.java and other is EXPos.java
In the EXPosApplet.java i have a method called
RunNotepad().This method should be executed when i click the
button in my jsp page.Pls provide me with some code to load the applet and execute the method of applet.It is a bit urgent.
Thanks
Naveen
The following is my
EXPos.java class.Following this is my EXPosApplet.java class.
EXPos.java
package SumberPutra.External;
import java.io.*;
public class EXPos extends Object {
* Constructor
public EXPos() {
private static void RunIt(String fileName){
try {
Runtime.getRuntime().exec(fileName);
catch (SecurityException e) {
System.out.println("ExecFile: caught security exception: " + e) ;
catch (IOException ioe) {
System.out.println("ExecFile: caught i/o exception: " + ioe);
public void RunNotepad(){
String fname = "notepad.exe";
RunIt(fname);
EXPosApplet.java
package SumberPutra.External;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
public class EXPosApplet extends JApplet {
boolean isStandalone = false;
private EXPos expos = new EXPos();
JButton jButton1 = new JButton();
JLabel jLabel1 = new JLabel();
* Constructs a new instance.
* getParameter
* @param key
* @param def
* @return java.lang.String
public String getParameter(String key, String def) {
if (isStandalone) {
return System.getProperty(key, def);
if (getParameter(key) != null) {
return getParameter(key);
return def;
public EXPosApplet() {
* Initializes the state of this instance.
* init
public void init() {
try {
jbInit();
catch (Exception e) {
e.printStackTrace();
private void jbInit() throws Exception {
this.setSize(new Dimension(400, 156));
jButton1.setText("jButton1");
jLabel1.setText("jLabel1");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(ActionEvent e) {
jButton1_actionPerformed(e);
this.getContentPane().add(jButton1, BorderLayout.NORTH);
this.getContentPane().add(jLabel1, BorderLayout.SOUTH);
* start
public void start() {
* stop
public void stop() {
* destroy
public void destroy() {
* getAppletInfo
* @return java.lang.String
public String getAppletInfo() {
return "Applet Information";
* getParameterInfo
* @return java.lang.String[][]
public String[][] getParameterInfo() {
return null;
static {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
catch(Exception e) {
e.printStackTrace();
public void ExecNotepad(){
expos.RunNotepad();
/* void jButton1_actionPerformed(ActionEvent e) {
try
Runtime.getRuntime().exec("notepad.exe");
catch (SecurityException ex) {
// strMsg = "ExecFile: caught security exception: " + e ;
jLabel1.setText("ExecFile: caught security exception: " + ex) ;
catch (IOException ioe) {
// strMsg = "ExecFile: caught i/o exception: " + ioe;
jLabel1.setText("ExecFile: caught i/o exception: " + ioe);

hie Naveen
I don't have time to read your code.
just telling you the way i did it.
I used javascript for this
apply onClick() event on button.
function invokeApplet() {
app = document.applets[0].methodName(param1,param2);
hope this helps
if you still face the problem
I'll look in to your code

How to call a action on page load in jsf

Hi all,
i am having a JSF page where i want to display the records from the datatable. I have a method in bean which call database and gets the list of records. If i call this method from a link (action on this link) present on this page i can display the records on this page.
But i want to display these records at the time of page load only. How we can do this? How to call a action at the time of page load?
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If i am calling the database class and get the list in constructor only i am able to display list in the datatable on page load. This works fine. But the requirment is that if there are no records in the list display a error page with message-No records found! . But how i can navigate from the constructor to error page?
Like-
class MyBeam{
MyBean{
private List requestVOList = null;
MyDao dao = new MyDao() //for fetching list from DB
List records = dao.getList() //get list from dao class
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Very simple question: Call JavaBean method on page load?

Someone clicks on a URL that contains parameters like: http://server/page.jsf?param=b
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This must be really simple; sorry I'm new to this technology.
Must I use <% ... %> syntax or can I use actual JSF tags or configuration to accomplish this?
Thanks very much in advance!

Putting a lot of logic in getter( ) function is not the best idea considering that getter( ) could be called all over the place. Using constructor for same purpose is also a bad idea especially with request scope beans. This could also happen many times at different stages. You are right, having a page load concept could be useful. Unfortunately JSF framework does not support. You could architect around it in case desperate. Or if using JSF implementation of certain vendors like IBM, you can take advantage of their implementation that was extended to support pageLoad and postBack events (similar to .NET).
Many postings on this forum dealt with topic. Feel free to review like this one:
http://forum.java.sun.com/thread.jspa?forumID=427&threadID=541382

How to execute a method after page Load?

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