Global Exceptions in Struts

Hi All,
When ever there is an error I need to handle the exceptions gracefully. Since I'm using struts frame work I'm using global-exceptions declarative.
Here is the struts-config.xml where I have included <global-exceptions>
<global-exceptions>
<exception handler="com.hp.chrs.action.ActionExceptionHandler"
type="java.lang.Exception"
key="global.error.message "
path="/jsp/chrs_error.jsp" />
</global-exceptions>
I have written ActionExceptionHandler.java class which is the subclass of ExceptionHandler. In execute function of this I'm logging the error then forwarding it to chrs_error.jsp.
public ActionForward execute(Exception ex, ExceptionConfig ae,
ActionMapping mapping,
ActionForm formInstance,
HttpServletRequest request,
HttpServletResponse response)
throws ServletException {
System.out.println ("Inside execute of ActionExceptionHandler");
logError(ex);
//forward to the jsp
ActionForward forward =
super.execute(ex, ae, mapping, formInstance, request, response);
When ever an error occurs chrs_error.jsp is displayed. But it is not going to ActionExceptionHandler.java class.
What my unerstanding is whenever error occurs it should go to ActionExceptionHandler and then display chrs_error.jsp.
Any inputs are welcome
Thanks in Advance

Most probably its the wrond struts version...you cannot use message resources in struts i.0, might want to change the head of the struts-config.xml to
<!DOCTYPE struts-config PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 1.2//EN"
"http://jakarta.apache.org/struts/dtds/struts-config_1_2.dtd">

Similar Messages

Global Exception in Struts

Hi All,
When ever there is an error I need to handle the exceptions gracefully. Since I'm using struts frame work I'm using global-exceptions declarative.
Here is the struts-config.xml where I have included <global-exceptions>
<global-exceptions>
<exception handler="com.hp.chrs.action.ActionExceptionHandler"
type="java.lang.Exception"
key="global.error.message"
path="/jsp/chrs_error.jsp" />
</global-exceptions>
I have written ActionExceptionHandler.java class which is the subclass of ExceptionHandler. In execute function of this I'm logging the error then forwarding it to chrs_error.jsp.
public ActionForward execute(Exception ex, ExceptionConfig ae,
ActionMapping mapping,
ActionForm formInstance,
HttpServletRequest request,
HttpServletResponse response)
throws ServletException {
System.out.println("Inside execute of ActionExceptionHandler");
logError(ex);
//forward to the jsp
ActionForward forward =
super.execute(ex, ae, mapping, formInstance, request, response);
When ever an error occurs chrs_error.jsp is displayed. But it is not going to ActionExceptionHandler.java class.
What my unerstanding is whenever error occurs it should go to ActionExceptionHandler and then display chrs_error.jsp.
Any inputs are welcome
Thanks in Advance

No there isn't a global exception handler in JSF. At least none that I've ever heard of or run across. This is something I think JSF dropped the ball on. Maybe in a future release?
I'm afraid you'll have to get creative with error processing. It's tricky with JSF.
The way I did it in my application was to create error pages (as you mentioned). I configured the web.xml to redirect to these error pages if there was an uncaught exception. There are some serious limitations when you forward to a JSF page like this though. First, you need to make your error page have f:subview tags instead of f:view. Then, I couldn't get commandLink or commandButton to work right. The action method never got executed!
You may have already seen some discussions about this. If not, dig around in the forums and you'll find a few good tips.
CowKing

Strut - global exceptions

does anyone know the syntax for global exceptions in struts?
thnx,
sunsons

Global Exceptions are configured with <global-exceptions> in the struts-config.xml file.
A <global-exceptions> configures the global handling of exceptions thrown by Actions to mappable resources using an application-relative URI path. This can be a specific page designed to handle this exception.

Exception in global forwards in strut-config.xml

Hi friends,
i am doing a global forward and i am getting the following exception. without global forward in strut-config.xml it works fine.exception
javax.servlet.ServletException: Cannot find global ActionForward for name welcome
     org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:848)
     org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:781)
     org.apache.jsp.test_jsp._jspService(org.apache.jsp.test_jsp:76)
     org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:291)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause
javax.servlet.jsp.JspException: Cannot find global ActionForward for name welcome
     org.apache.struts.taglib.logic.ForwardTag.doEndTag(ForwardTag.java:142)
     org.apache.jsp.test_jsp._jspx_meth_logic_forward_0(org.apache.jsp.test_jsp:93)
     org.apache.jsp.test_jsp._jspService(org.apache.jsp.test_jsp:64)
     org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:291)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)my struts-config.xml is
<?xml version="1.0" encoding="ISO-8859-1" ?>
<!DOCTYPE struts-config PUBLIC
          "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN"
          "http://jakarta.apache.org/struts/dtds/struts-config_1_2.dtd">
<struts-config>

<global-forwards>
<forward name="welcome" path="/LPCIndex/doit.do" redirect="true"/>
</global-forwards>

<action-mappings>
<action
     path="/doit"
     type="com.hsbc.lpcintex.LPCIntexAction">
     <forward name="success" path="/index.jsp"/>
</action>
</action-mappings>
</struts-config>my web.xml
is
<?xml version="1.0" encoding="ISO-8859-1"?>

<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>Welcome to Tomcat</display-name>
<description>
     Welcome to Tomcat
</description>


     <welcome-file-list>
          <welcome-file>test.jsp</welcome-file>
     </welcome-file-list>
     <session-config>
          <session-timeout>0</session-timeout>
     </session-config>
<servlet>
<servlet-name>action</servlet-name>
<servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
<init-param>
<param-name>config</param-name>
<param-value>/WEB-INF/struts-config.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>action</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>

</web-app>and my jsp code is
<%@ page language="java" import="com.hsbc.lpcintex.*" import="java.io.*"%>
<%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic"%>
<html>
<body>
<logic:forward name="welcome"/>
</body>
</html>any help please
thanks
R

its done by adding
<load-on-startup>2</load-on-startup>to web.xml

How to handle exception in struts

i am using global exception to pass to a page that shows an error message.
I also want to pass the actual error message to that page is that possible
through the struts config
<global-exceptions>

<exception
key="global.message"
type="java.lang.Exception"
path="Errors.jsp"/>
</global-exceptions>

i am using global exception to pass to a page that shows an error message.
I also want to pass the actual error message to that page is that possible
through the struts config
<global-exceptions>

<exception
key="global.message"
type="java.lang.Exception"
path="Errors.jsp"/>
</global-exceptions>

Global Exception Handling

How to set up global exception handling to provide user friendly messages to user?
AFAIK there is no real global exception handing available for now in ADF. So I need some "tutorials" about exception handling in:
- Model
- Controller
- View
Thx
Regards
Zmeda

refer this
http://blogs.oracle.com/groundside/entry/adventures_in_adf_logging_part
controller
http://blogs.oracle.com/jdevotnharvest/entry/extending_the_adf_controller_exception_handler
http://andrejusb.blogspot.com/2011/03/exception-handler-for-method-calls_19.html
http://my.safaribooksonline.com/book/databases/oracle/9780071622547/introduction-to-oracle-adf-task-flows/ch04lev1sec7
http://my.safaribooksonline.com/book/databases/oracle/9780071622547/working-with-unbounded-and-bounded-oracle-adf-task-flows/169

Query regarding Declarative exceptions in struts

Hi all,
I am using decalartive exceptions in struts,
My struts-config.xml is as follows -
<action
path="/tryexception"
<exception
type="hansen.playground.MyException1"
key ="errors.exception1"
handler="hansen.playground.MyHandler"
path="/error.jsp"/>
</action>
Currently i am displaying the error message in my error.jsp page by getting the value from the session.
The code is as follows -
<%@ page language="java" %>
<%@ page import="java.util.*" %>
<%@ page import="java.io.*" %>
<%@ page import="org.apache.struts.*" %>
<%
Enumeration paramNames = request.getAttributeNames();
while (paramNames.hasMoreElements()) {
String name = (String) paramNames.nextElement();
     if (name.equals("errorMessage")){
          Object values = request.getAttribute(name);
          out.println("<br> " + name + ":" + values);
%>
This works fine and the error message is diplayed.
My question is there any other way to display the error message in the jsp page without getting it from the session.
Any suggestions will be appreciated
Thanks,

You could simply POST the data as opposed to using GET. Though it doesn't encode/ encrypt the data, but simply adds the parameters into the body of the request. If someone were to look at your requests, they'd be able to see this data.
As for actually hiding it through encryption, you could get JavaScript libraries to do this on form submit but I doubt you'd need that much security. You could also try base64 encoding for a simpler approach.
People on the forum help others voluntarily, it's not their job.
Help them help you.
Learn how to ask questions first: http://faq.javaranch.com/java/HowToAskQuestionsOnJavaRanch
(Yes I know it's on JavaRanch but I think it applies everywhere)
----------------------------------------------------------------

exception in struts-config.xml

hi all
I added a validate method in my struts action form.
public ActionErrors validate(........)
ActionErrors errors=new ActionErrors();
errors.add("symbol",new ActionError("add.key.like");
and in jsp form I used <html:errors/> if any error occured it will display it from resourcebundle from the key...
but my actual doubt is how the above procedure is different from
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thanks
srikanth

Need Help!
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Hi,
I have a global exception class which is inherited from already existing exception class.
I would like to use this class to raise different exceptions.
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can anybody explain or send a material on this?
Thanks in advance...
Sreenivas Reddy

I guess you have little misunderstanding of the Exception concept.
You have to RAISE the exception from any processing block (Subroutine, Method etc.) and CATCH the exception in where you call the subroutine.
Check this example. In this example, I am raising the exception from the method DEVIDE of the class LCL_TEST. Now, I call this method DEVIDE in the START-OF-SELECTION block. So, here I need to catch this raised exception by the DEVIDE method. In my example I have used the exception class ZCX_GEN_EXC, you may have to replace it with your exception class ZCX_SAMPLE_EXCEPTION.
CLASS lcl_test DEFINITION.
PUBLIC SECTION.
    METHODS devide
      IMPORTING
        n1 TYPE i
      CHANGING
        n2 TYPE i
      RAISING
        zcx_gen_exc.
ENDCLASS.                    "lcl_test DEFINITION
START-OF-SELECTION.
DATA: lo_test TYPE REF TO lcl_test,
        lo_exc TYPE REF TO zcx_gen_exc,
        lf_n1   TYPE i,
        lf_n2   TYPE i.
CREATE OBJECT lo_test.
lf_n1 = 0.
lf_n2 = 10.
TRY.
      CALL METHOD lo_test->devide
        EXPORTING
          n1 = lf_n1
        CHANGING
          n2 = lf_n2.
* catching the exception
    CATCH zcx_gen_exc INTO lo_exc.
      MESSAGE lo_exc->wf_etext TYPE 'I'.
ENDTRY.
CLASS lcl_test IMPLEMENTATION.
METHOD devide.
    IF n1 = 0.
      RAISE EXCEPTION TYPE zcx_gen_exc
        EXPORTING
          wf_etext = 'Exception occured'
          wf_mtype = 'E'.
    ELSE.
      n2 = n2 / n1.
    ENDIF.
ENDMETHOD.                    "devide
ENDCLASS.                    "lcl_Test IMPLEMENTATION
Regards,
Naimesh Patel

Global Exception Handler

Hello,
I've implemented the Global Exception Handler how is saying at http://www.adobe.com/devnet/flex/articles/global-exception-handling.html
Some errors are being catched by it, and others not.
I looked at another thread here, but for him, the Debug Dialog was not appearing because another place was catching the exception for him.
There are some way to catch all errors in just on place?
I need this, because sometimes in production happen errors that we didn't find in development, but stills there.
The SDK is 4.1 and minimum Flash Player for the applications is 10.1.
Regards,
Fredy.

How to reproduce the error not being catched.
Main Application:
<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
                                 xmlns:s="library://ns.adobe.com/flex/spark"
                                 xmlns:mx="library://ns.adobe.com/flex/mx"
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                                 minHeight="600"
                                 xmlns:views="views.*"
                  applicationComplete="onApplicationComplete()">
          <s:layout>
                    <s:VerticalLayout />
          </s:layout>
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                    <![CDATA[
                              import com.adobe.ac.logging.GlobalExceptionHandler;
                              import com.adobe.ac.logging.LogHandlerAction;
                              private var globalExceptionHandler:GlobalExceptionHandler;
                              private function onApplicationComplete():void {
                                        globalExceptionHandler = new GlobalExceptionHandler();
                                        globalExceptionHandler.preventDefault = true;
                                        var lha:LogHandlerAction = new LogHandlerAction();
                                        globalExceptionHandler.handlerActions = [];
                                        globalExceptionHandler.handlerActions.push(lha);
                    ]]>
          </fx:Script>
          <mx:ViewStack id="vs" creationPolicy="none">
                    <views:FirstView />
                    <views:SecondView />
          </mx:ViewStack>
          <s:Button label="Call Second View" click="vs.createDeferredContent()"/>
</s:Application>
First View:
<?xml version="1.0" encoding="utf-8"?>
<s:NavigatorContent xmlns:fx="http://ns.adobe.com/mxml/2009"
                     xmlns:s="library://ns.adobe.com/flex/spark"
                     xmlns:mx="library://ns.adobe.com/flex/mx" width="400" height="300"
                     creationComplete="onCreationComplete()">
          <fx:Script>
                    <![CDATA[
                              import mx.rpc.remoting.RemoteObject;
                              private function onCreationComplete():void {
                                        trace("First Created!");
                    ]]>
          </fx:Script>
</s:NavigatorContent>
Second View:
<?xml version="1.0" encoding="utf-8"?>
<s:NavigatorContent xmlns:fx="http://ns.adobe.com/mxml/2009"
                                                  xmlns:s="library://ns.adobe.com/flex/spark"
                                                  xmlns:mx="library://ns.adobe.com/flex/mx" width="400" height="300"
                                                  creationComplete="onCreationComplete()">
          <fx:Script>
                    <![CDATA[
                              import mx.rpc.remoting.RemoteObject;
                              private function onCreationComplete():void {
                                        trace("Second View created!");
                                        var ro:RemoteObject;
                                        ro.destination = "";
                    ]]>
          </fx:Script>
</s:NavigatorContent>
Regards,
Fredy.

What is a global Action in Struts?

What is a global Action in Struts?
if any body have any idea about it then plz tell me ab this...
Thanx

well some one ask me this question in an Interview?
what is the difference between Global Action anc Global Forward?
nither i heard ab Global Action ...nor i use it...so i told him a do not have any info ab it...

Calling EJBs from Global Exception Handler

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Hi,
I want to capture all run time exceptions and store them into a log file.
I have used uncaught error event handler for catching all such run time exceptions.
Application has various components and I have manualy introduced few run time exceptions at various places
I was able to capture these uncaught exceptions only at very few places and even this was not consistent.
Any help will be greatly appreciated.
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If you have multiple SWFs, you may need information in this post: http://blogs.adobe.com/aharui/2011/04/catching-uncaughterror-in-flex-modules.html

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UserTransaction utx = null;
try {
InitialContext ctx = new InitialContext();
utx = (UserTransaction) ctx.lookup("java:comp/UserTransaction");
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