Data communication between jsp pages in different context

hi,
I've two web applications one calling the other. The calling app needs to pass user id but not in the url
How can this be acheived.?
Even though i searched in several forums about forward and redirect, i donot have a clear idea.
Please help.
Thanks.

Use POST. The form action URL can just point to a different context.

Similar Messages

Communication between jsp and abstractportalcomponent

Hello All
Communication between jsp and abstractPortalComponent.
jsp contains one input text field and one submit button.
when the user clicks on submit button it will call the component and that input value will
display in same jsp page.
how this communication will happen?
Rgrds
Sri

Hi Srikanth,
In the JAVA File,
OnSubmit Event,
String inputvalue ;
InputField myInputField = (InputField) getComponentByName("Input_Field_ID");
if (myInputField != null) {
               inputvalue = myInputField.getValueAsDataType().toString();
request.putValue("textvalue", inputvalue);
request is IPORTALCOMPONENTREQUEST Object.
In JSP File,   to retreive the value,
<%
String textstring = (String) ComponentRequest.getValue("textvalue");
%>
In PORTALAPP.XML File,
<component name="component name">
      <component-config>
        <property name="ClassName" value="classname"/>
        <property name="SafetyLevel" value="no_safety"/>
      </component-config>
      <component-profile>
        <property name="tagLib" value="/SERVICE/htmlb/taglib/htmlb.tld"/>
      </component-profile>
    </component>
Using the code above, You can pass and read values between abstract portal component and Jsp Page.
Instead of this, I suggest you to use JSPDYNPAGE Component for Data Exchange.
Check the [Link|http://help.sap.com/saphelp_nw2004s/helpdata/de/ce/e0a341354ca309e10000000a155106/frameset.htm].
Hope this helps you.
Regards,
Eben Joyson

Urgent! pass parameters between jsp pages

Does anyone can give an example about how to pass parameters between jsp pages?
This is what I do:
pageContext.forward("pag_loginc.jsp?p_idusr=" + strUsr + "&c_password=");
But when deployed is not working.
Help is needed.

can you put that stuff in the session context in the first page, then pull it out in the second page?

Traversing between JSP Pages

Hi!,
I need a suggestion to this problem that i'm facing.I want to traverse between JSP pages which follow like a wizard.i.e,i click next to go to the next page & back to traverse back to the previous page.I have some text fields in the previous page that contain some info.When i click on Next it goes to the next page.when i click on Previous i want to be able to view the input contents in the previous page.I tried using < a href="">
but it blanks all the fields ....
Somebody help
Regards,
Chaitra

Use theseus mvc framework. (http://sourceforge.net/projects/theseus-mvc). It will teach you to properly and cleanly right web sites the way they should be, where JSP pages server only as a "view", the action class (servlet hybrid so to speak) handles passing form data to logic, logic returns to action class that then populate the request that is passed on to the JSP page to make use, especially if you use a JavaBean or taglib.

How the hell does a person share session data between JSP page and a Servle

1. How the hell does one share session data between a servlet and a JSP page without using a bean but rather using a normal string variable.
2. When using session scope to access a bean the application complains about not finding the bean on the specified scope, however when I use an application scope the save the same bean, the application does find it.
Please help!!!!!!!
SERVLET:
HttpSession session = request.getSession(true);
ServletContext servletContext = session.getServletContext();
customerID = result.getString("CustomerID");
userName = result.getString("UserName");
session.setAttribute("UserName",userName);
session.setAttribute("CustomerID",customerID);
System.out.println("Customer UserName = " + session.getAttribute("UserName"));
response.sendRedirect("/economics/subscriptions/default.jsp");
JSP PAGE:
<?xml version="1.0" encoding="UTF-8"?>
<jsp:root xmlns:jsp=http://java.sun.com/JSP/Page mlns:c="http://java.sun.com/jsp/jstl/core" xmlns:sql="http://java.sun.com/jsp/jstl/sql" version="2.0">
<jsp:directive.page isThreadSafe="true" session="true" contentType="text/xml"/><jsp:output omit-xml-declaration="false"/><jsp:scriptlet>response.addHeader("x-xslt-nocache", "true");</jsp:scriptlet><pml>
<page type="web" search="y">
     <pageName>Commercial Banking</pageName>
     <jsp:directive.include file="/economics/header.inc"/>
     <jsp:directive.include file="/login.inc"/>
     <jsp:directive.include file="/economics/leftMenu.inc"/>
     
     <content>
     <searchSum>Commercial - Main Content</searchSum>
     Value = <c:out value="${request.session.getAttribute("UserName")}"/>
     </content>
     <jsp:directive.include file="/economics/rightNav.inc"/>
     <jsp:directive.include file="/footer.inc"/>
</page></pml></jsp:root>

For a start, just "session" instead of "request.session" would work better. But why did you post this here and not in the JSP forum? Doesn't seem to have anything to do with Java programming.

Single signon between JSP page and Net.Data page

I am trying to setup a single signon between a JSP page hosted on a tomcat server, and a Net.Data page hosted on an IBM HTTP server. Both of these servers are running on an AS400. The JSP page (www.jsppage.com/menu) contains a link to the Net.Data page (www.netData.com/page2). In order to access www.jsppage.com/menu the user needs to login. Once this happens I want them to be able to go back and forth between the two pages without having to log in when they switch servers. Page navigation is handled through myServlet.java so that when a user clicks on a link the request is forwarded on to myServlet.java where the servlet determines where to redirect the user to. The servlet uses
RequestDispatcher requestDispatcher = getServletContex().getRequestDispatcher(url);
requestDispatcher.forward(request, response);
to forward the user to the correct page. This works fine for the JSP pages but when I forward to www.netData.com/page2 I get an error telling me the address doesn't start with a /. I also need to send the user name and password for the net.data pages to avoid the second login window to popup.
I understand that the requestDsipatcher.forward() method directs the browser to a page that is relative to the current root directory. If I try to use response.sendRedirect(url) I get sent to the right page but the signon window pops up. I would appreciate any help.

I am trying to setup a single signon between a JSP
page hosted on a tomcat server, and a Net.Data page
hosted on an IBM HTTP server. Both of these servers
are running on an AS400. The JSP page
(www.jsppage.com/menu) contains a link to the Net.Data
page (www.netData.com/page2). In order to access
www.jsppage.com/menu the user needs to login. Once
this happens I want them to be able to go back and
forth between the two pages without having to log in
when they switch servers. Page navigation is handled
through myServlet.java so that when a user clicks on a
link the request is forwarded on to myServlet.java
where the servlet determines where to redirect the
user to. The servlet uses
RequestDispatcher requestDispatcher =
getServletContex().getRequestDispatcher(url);
requestDispatcher.forward(request, response);
to forward the user to the correct page. This works
fine for the JSP pages but when I forward to
www.netData.com/page2 I get an error telling me the
address doesn't start with a /. I also need to send
the user name and password for the net.data pages to
avoid the second login window to popup.
I understand that the requestDsipatcher.forward()
method directs the browser to a page that is relative
to the current root directory. If I try to use
response.sendRedirect(url) I get sent to the right
page but the signon window pops up. I would
appreciate any help.You can't do that without passing username and password.
The servers keep track of the user by storing a cookie on the clients computer. The cookie is only valid for the domain that created it.
So, to make this work you need to send the username and password as part of the sendRedirect. the forward() method won't work.
What you could do is create some code on the .net machine that accepts username, password and target URL as input. Once it receives those parameters it should perform the .net login procedure and redirect to the correct page.
In your servlet you should pass those parameters on to the .net machine and the user should get the correct page without ever seeing any login windows.
Make sure to use https if you decide to follow this scheme since http will transmit the username/password in cleartext.
/Christopher

How can share data between jsp pages using beans??

any one can give me code for 2 jsp pages with bean that share data for them

<jsp:usebean name="yourBeanName" type="com.whatever.foo" scope="session"/>
this will look for a bean named yourBeanName in the scope specified by the scope attribute. If none was found, the container will instantiate one with the no arg constructor for your bean and place it into the proper scope.
if your bean had a method getName(), you could then on your jsp do:
<%=yourBeanName.getName()%> to print the results of the method to the page. there are other ways to do the actual placing of the output on the page, but this is the most direct.

Help fowarding data to a jsp page

I know your not meant to double post but i was told it would be better if i post this message in here so:
I am trying to create a bean that will connect to a database and bring back data depending on what a user typed into a html form. However i need some help, if the database does not find any data i want to send a message saying something like "no results" to a jsp page which then be displayed, if results are found i then want to pass on these results to another jsp page.
My question is how would i pass on this data / message to a jsp page? Also if more then one piece of data is returned from the database how would i be able to make sure everything is sent to the jsp?

In the above code a Servlet, a JavaBean, JDBC and everything else is combined into just one class. That is not how it is.
A Servlet is a Servlet --- it is not a JavaBean ---- So create a dedicated class that is purely a Servlet and does what a Servlet is supposed to do. Taking the tutorial on Servlets will help you understand them better.
A JavaBean is a JavaBean ---- it is not a Servlet --- Create a JavaBean class.
Move the Database Connection code to the Data Access Layer --- this means create separate classes that are meant to only access data.
It is better to learn each individual concept before attempting something more complex.
Also build small code into your class, ---- understand what it's doing then compile it frequently.
I'll give you hints on how you should properly implement an MVC pattern.
JSP Page
This page contains an HTML form , with form fields and a submit button.
In the action attribute of the form you will specify the URL-pattern for the Servlet.
The URL-pattern for the servlet will be defined in web.xml , for example
<form action="/MyFirstServlet" method="post" >
</form>Then create a Servlet , in its package , so for example
com.myapp.servlet.MyFirstServlet.java
Place the servlet file in a proper folder structure in the Java source folder.
When the Servlet it compiled it needs to go under the corresponding folder structure under your applications /WEB-INF/classes/ folder.
Your servlet will look something like this:
package com.myapp.servlet.MyFirstServlet;
//All import statements go here
public class MyFirstServlet extends HttpServlet{
   public void doGet(HttpServletRequest request, HttpServletResponse response) throws ......... exceptions {
        doPost(request, response);
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ......... exceptions {
        //Process the request here
request.getAttribute("someFormField");
//similarly get all form fields
//Store all fields into a JavaBean
//Then call a method that saves the data to database
saveToDatabase(pass the javabean here);
private void saveToDatabase(SomeJavaBean someJavaBean){
    //Over here call a DataAccessObject -- DAO that saves the data
   // to the database.
/WEB-INF/web.xml
When you write a servlet you need to define it in web.xml and define a URL mapping also for it in web.xml
JavaBean example
com.myapp.beans.Person.java
package com.myapp.beans.Person;
//whatever import statements (if any) go here
public class Person{
private int age;
private String firstName;
public Person(){} //Every JavaBean must have a default constructor
//Write the Getters and Setters for the private fields above.
//in proper JavaBeans notation as follows
public void setAge(int age){
this.age = age;
public int getAge(){
   return this.age;
//Similarly write getter and setter for firstName
}You would then use the above JavaBean to transport data between the database layer and JSP layer via the Servlet.
If you are Saving to the Database , you read the HTML form's data and save it into one JavaBean and then pass the JavaBean to the database layer to be saved. In the Database layer you write JDBC code to save the data.
If you are Reading from the database, you create an ArrayList of JavaBean objects in the database layer using JDBC code and then pass the ArrayList to the Servlet which stores it in the Request, then the servlet forwards control to the JSP which then reads the data from the request.
Most of the above is pseudo code, it is just there to give you an idea about how do this properly in MVC --- you can then read tutorials on each of the above --- for example tutorial on Servlet, tutorial on JDBC, tutorial on Java Classes and then understand them more.

Session Data Lost Between JSP's

Hello,
I am using Oracle 10g Application Server (9.0.4) on SunOS 5.8. I am trying to upgrade an application previously written for Oracle 9iAS 9.0.2.
A single JSP (myFile.jsp) is called via a POST operation, and it is initally used to create a frameset that contains two frames. Each frame has a URL link to the same JSP file, with some additional parameters:
<frameset border="0" rows="*,70">
<frame NAME="topFrame" SRC="myFile.jsp?PARAMETER1=hello&PARAMETER2=goodbye"/>
<frame NAME="bottomFrame" SRC="myFile.jsp?PARAMETER1=hello&PARAMETER2=goodbye"/>
</frameset>
The problem is that when myFile.jsp is called to generate the actual page for the frames, all the HttpServletRequest data has gone, and only the parameters passed in the Query String remain. I don't want to lose the original POST data - in fact, when I used this on Oracle 9iAS 9.0.2 it preserved the POST data and added the additional queries from the query string so all the parameters were available.
Has the behaviour of the session manager changed that much between Oracle 9iAS and Oracle 10g 9.0.4? How can I achieve my goal on 9.0.4?
I tried adding the original POST request to the HttpSession variable as follows:
session.setAttribute("PARENT_REQUEST",request);
and then extracting the request data when the JSP is called on subsequent occasions as follows:
HttpServletRequest newRequest = (HttpServletRequest) session.getAttribute("PARENT_REQUEST");
But 'newRequest' is actually empty, and it doesn't create an exception. If I debug the session object I notice 2 things:
1. The session ID remains the same througout all calls of myFile.jsp.
2. The memory location pointed to by the parameter "PARENT_REQUEST" also remains the same, in the format:
com.evermind.server.http.AJPHttpServletRequest@1bd5093
If the session object being passed around by cookies remains consistent, why can I not extract the PARENT_REQUEST attribute from it on subsequent calls to myFile.jsp? Have I misunderstood how HttpSession works? How can I modify my JSP's so that data stored during a session is made available to subsequent calls to myFile.jsp?
I appreciate any insight you can offer!

Has the behaviour of the session manager changed that much between Oracle 9iAS and
Oracle 10g 9.0.4? How can I achieve my goal on 9.0.4?If your experience did suggest something has changed from 9.0.2 to 9.0.4, I would believe that it is more about request management.
If the session object being passed around by cookies remains consistent, why can I not
extract the PARENT_REQUEST attribute from it on subsequent calls to myFile.jsp? Have
I misunderstood how HttpSession works? How can I modify my JSP's so that data stored
during a session is made available to subsequent calls to myFile.jsp?The "request" in the following code
session.setAttribute("PARENT_REQUEST", request);
is just a pointer to the actual request object. Other code, especially the server internal code that manage the http requests and responses can see and manipulate that actual request object. For example, although I am not sure if it is the case, the request objects can be pooled and reused. So it is possible that although "The memory location pointed to by the parameter "PARENT_REQUEST" also remains the same, in the format: com.evermind.server.http.AJPHttpServletRequest@1bd5093", the actual request object at that memory location may have changed. The right way to preserve the original request object is to make a private deep copy of it; however there is no easy way to do that.
Well, an easy way out is to store directly what you need from the original request. If you would like to store the parameters, try
session.setAttribute("origParams", request.getParameterMap().clone());
Although this clone() does a shallow copy, it is probably good enough. To be absolutely sure, you can make a deep copy of everything you need and store them.
Good luck!

Problem in passing data from one .jsp page to another .jsp page

i have a problem here
Actually i have 2 jsp pages. What im trying to do here is actually i want to pass data from the first jsp page to the second for updating
The first jsp page contains data that user wants to update in the form of table.
<td><img src = "edit.gif" alt = "edit" border="0" ><td>
<TD><%= Name %></td>
<TD><%= rs.getInt("Age") %></td>
<TD><%= rs.getString("Gender") %></td>
So this page displays the data that users wants to update plus one image button (edit button). So when user clicks this button, all the data in this page will be brought to the second .jsp page called updatePersonal for updating.
The problem here is that it is not displaying the existing data in the second .jsp page.
The second page basically contains forms
<INPUT TYPE="text" NAME="FirstName" maxlength="30" value = "<%=FirstName%>">
Can someone please help me. I really dont know what to do..How do i get the data displayed in the text field that is passed from the first .jsp page..thankx in advance

Please modify below code to:
td><img src = "edit.gif" alt = "edit" border="0" ><td>
-----------------modified code
td><a href="updatePersonal.jsp?FirstName=<%=rs.getString(FirstName")%">&LastName=<%=rs.getString("LastName")%>&Age=<%=rs.getInt("Age")%>&Gender=<%=rs.getString("Gender")%>"><img src = "edit.gif" alt = "edit" border="0" ></a><td>
I'm sure it works</a>

How can I display the date on a jsp page??

Is there anyway to display the current date when someone views a jsp page??? Can I get it from the server or something like that?
Thx
Rich

is there any type of formatting that goes witth
that.....Most definitely -- check out the java.text.DateFormat object and its cohort java.text.SimpleDateFormat.
For example, if you wanted to display the current date in MM/DD/YYYY format, you could do the following:
<%-- This could go somewhere near the top of the JSP %>
<%
SimpleDateFormat f = new SimpleDateFormat("MM/dd/yyy");
%>
<% And later on, you could have... %>
<%= f.format(new Date()); %>Note that I've omitted the proper <%import%> directives.
-Navin

Posting huge data on to JSP page using JSTL tags

Hi,
I have one application where I have to post huge data (approximately 2000 rows of data) into JSP page. I am using JSTL tags and running on Tomcat 5.
It is taking almost 20 to 25 seconds to load the entire page.
Is it the optimal time to load or it could be improved?
Please let me know.
Thanks,
--Subbu.

Hi Evnafets,
Thank you for the response.
Here are the tasks I am doing to display the data on JSP.
0. We are running on Tomcat 5 and the memory size is 1024MB (1GB).
1. Getting the data - I am not performing any database queries. The data is stored in the static cache memory. So the server side response is so quick - less than a milli second.
2. Using Java beans to pass data to the presentation layer (JSP).
3. 10 'if' conditions and 2 'for' loops and 2 'choose' statements are being used in the JSP page while displaying the data.
4. Along with the above, there are 4 javascript files are being used.
5. The jsp file size after rendering the data, is aprox. 160 kb
Hope this information helps you to understand the problem.
Thanks,
--Subbu.

Returning data in a jsp page.

Hello all! :-D
i need to build a simple web app, that retrieves data from an array list. Well my sequence is as follows:
1-JSP request:
2- Servlet:
3-Java Class
4-Back to the servlet
5- Show result in a table inside a jsp page.
How do i send the array list object into a jsp page so it shows the data in the table?
Thanks in advance!

hi,
servlet - you may use HttpSession:
example:
        ArrayList list = new ArrayList();
                  list.add("data1");
                  list.add('data2");
               session.setAttribute("lists", list);{code}
JSP:
{code}<%@ taglib prefix="c" uri="http://java.sun.com/jstl/core" %>
<c:forEach var="list" items="lists">
        ${list}
</c:forEach>{code}
I hope this could help
quince

Copy listbox between jsp pages

Trying to have an action that will copy the entire listbox from 1 jsp page to another, not just the selected items.

You can achieve it in the following ways:
          <b>1. Put the List Box values in Session context</b>
          <b>2. Put the List Box values in application context</b>
          You cant use Struts action to achieve this.
          Thanks and regards,
          Paz

Struts where are values stored between jsp pages?

Hi.I realize that this is forum is not specifically for struts but I thought someone might know the answer to my question.
I have run the following code. The code contains two JSPs that both get there values from the same ArrayList generated by the same actionform so contain the same data. Example.jsp is diplayed when the application is first run when submit is clicked newjsp.jsp is displayed.
If a value in the fields of example.jsp is changed and submit is clicked the altered value is also displayed in newjsp.jsp. I am confused by this as after submit is clicked ExampleForm.java method reset is called which returns the variable values to their original value but the newly entered value is still displayed. Please tell me how this works
Example.jsp
<%@ page language="java"%>
<%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean"%>
<%@ taglib uri="http://struts.apache.org/tags-html" prefix="html"%>
<%@ taglib uri="http://struts.apache.org/tags-nested" prefix="nested"%>
<html>
    <head>
        <title>JSP for exampleForm form</title>
    </head>
    <body>
        <html:form action="/example">
            <h3>Use of nested:iteration tag</h3>
            <nested:nest property="department">
     DEP. ID: <nested:text property="id"/> <br />
     NAME: <nested:text property="name"/> <br /><br />
                <nested:iterate property="customers">
                    <b>Customer info</b><br />
          CUST. ID: <nested:text property="id"/> <br />
          NAME: <nested:text property="name"/> <br />
                </nested:iterate>
            </nested:nest>
            <br />
            <br />
            <html:submit/><html:cancel/>
        </html:form>
    </body>
</html>
Newjsp.jsp
<%@ page language="java"%>
<%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean"%>
<%@ taglib uri="http://struts.apache.org/tags-html" prefix="html"%>
<%@ taglib uri="http://struts.apache.org/tags-nested" prefix="nested"%>
<%@ taglib uri="http://struts.apache.org/tags-logic" prefix="logic" %>
<html>
    <head>
        <title>JSP for exampleForm form</title>
    </head>
    <body>
        <html:form action="/example">
            <h3>Use of nested:iteration tag</h3>
            <nested:nest property="department">
                <table>
                    <nested:iterate property="customers">
                        <tr><td>Customer info</td>
                            <td>CUST. ID: <nested:text property="id"/> </td>
                            <td>NAME: <nested:text property="name"/> </td>
                        </nested:iterate>
                    </tr>
                </table>
            </nested:nest>
            <br />
            <br />
            <html:submit/><html:cancel/>
        </html:form>
    </body>
</html>
ExampleAction.jsp
package de.laliluna.tutorial.nested.action;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import de.laliluna.tutorial.nested.form.ExampleForm;
import de.laliluna.tutorial.nested.object.*;
import java.util.*;
public class ExampleAction extends org.apache.struts.action.Action {
    /* forward name="success" path="" */
    private static final String SUCCESS = "success";
    @Override
    public ActionForward execute(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        ExampleForm formBean = (ExampleForm) form;
        Department depart = formBean.getDepartment();
        ArrayList dep = (ArrayList) depart.getCustomers();
        Customer cust0 = (Customer) dep.get(0);
        System.out.println(">>>>>>>>>>>>>> customer.getName() = " + cust0.getName());
        System.out.println(">>>>>>>>>>>>>> customer.getId() = " + cust0.getId());
        Customer cust1 = (Customer) dep.get(1);
        System.out.println(">>>>>>>>>>>>>> customer.getName() = " + cust1.getName());
        System.out.println(">>>>>>>>>>>>>> customer.getId() = " + cust1.getId());
        Customer cust2 = (Customer) dep.get(2);
        System.out.println(">>>>>>>>>>>>>> customer.getName() = " + cust2.getName());
        System.out.println(">>>>>>>>>>>>>> customer.getId() = " + cust2.getId());
        return mapping.findForward("example");
ExampleForm.jsp
package de.laliluna.tutorial.nested.form;
import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;
import de.laliluna.tutorial.nested.object.*;
import java.util.ArrayList;
import java.util.Collection;
public class ExampleForm extends org.apache.struts.action.ActionForm {
    Department department;
    public Department getDepartment() {
        return department;
    public void setDepartment(Department department) {
        this.department = department;
    public void reset(ActionMapping mapping,
            HttpServletRequest request) {
        System.out.println("Entered action bean reset");
        Collection customers = new ArrayList();
        customers.add(new Customer(1, "Maria"));
        customers.add(new Customer(2, "Klaus"));
        customers.add(new Customer(3, "Peter"));
        department = new Department(1, "Department A", customers);
Customer.java
package de.laliluna.tutorial.nested.object;
public class Customer {
    private int id;
    private String name;
    public Customer() {
    public Customer(int id, String name) {
        this.id = id;
        this.name = name;
    public int getId() {
        return id;
    public void setId(int id) {
        this.id = id;
    public String getName() {
        return name;
    public void setName(String name) {
        this.name = name;
Department.java
package de.laliluna.tutorial.nested.object;
import java.util.Collection;
public class Department {
    private int id;
    private String name;
    private Collection customers;
    public Department() {
    public Department(int id, String name, Collection customers) {
        this.id = id;
        this.name = name;
        this.customers = customers;
    public Collection getCustomers() {
        return customers;
    public void setCustomers(Collection customers) {
        this.customers = customers;
    public int getId() {
        return id;
    public void setId(int id) {
        this.id = id;
    public String getName() {
        return name;
    public void setName(String name) {
        this.name = name;
}

Thanks for responding.
I set the debugger as you suggested and found that method reset is being called.
I did not write the whole of this program I was just playing around with and expanding a struts example I found on line.
http://www.laliluna.de/articles/struts-nested-iteration-tutorial.html
It contains the reset method.
I am interested to know how to reset the values. So am clearing the data after it has been submitted, just to reset. I assumed that once the new page was arrived at the values would be taken from the array.
I am quite new to struts and am not familiar with example_input.action and example.action I will look into these.

Data communication between jsp pages in different context

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