List-Backed Form

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index.jsp

<%@ taglib uri="http://jakarta.apache.org/struts/tags-html" prefix="html" %>
<html>
<head>
  <title>ActionForm Samples</title>
  <link href="css/style.css" rel="stylesheet" type="text/css"/>
</head>
<body>
  <h1>ActionForm Sample</h1>
  <ul>
   <LI><html:link page="/listFormInput.jsp">List-Backed Form</html:link></LI>
  </ul>
   </body>
</html>

listFormInput.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-html" prefix="html" %>

<html>
<head>
    <title>List-backed Form Property</title>
</head>
<body>
    <h2>List Form Input</h2>
    <html:form action="/listForm">
        Who are your 3 friends:<br />
        Friend 1: <html:text property="friend[0]"/><br />
        Friend 2: <html:text property="friend[1]"/><br />
        Friend 3: <html:text property="friend[2]"/><br />
        Who are your 3 addresses:<br />
        Address 1: <html:text property="address[0]"/><br />
        Address 2: <html:text property="address[1]"/><br />
        Address 3: <html:text property="address[2]"/><br />
        <html:submit/>
    </html:form>
</body>
</html>

struts-config.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN" "http://struts.apache.org/dtds/struts-config_1_2.dtd">

<struts-config>
<data-sources />
<form-beans >
<form-bean name="listForm" type="cn.hxex.actionform.struts.form.ListForm" />

</form-beans>

<global-exceptions />
<global-forwards />
<action-mappings >
    <action
      attribute="listForm"
      input="/listFormInput.jsp"
      name="listForm"
      path="/listForm"
      scope="request"
      type="cn.hxex.actionform.struts.action.ListFormAction">
      <forward name="display" path="/listForm.jsp" />
    </action>
     </action-mappings>

<message-resources parameter="cn.hxex.actionform.struts.ApplicationResources" />
</struts-config>

listForm.java

//Created by MyEclipse Struts
// XSL source (default): platform:/plugin/com.genuitec.eclipse.cross.easystruts.eclipse_4.1.0/xslt/JavaClass.xsl

package cn.hxex.actionform.struts.form;

import java.util.ArrayList;
import java.util.List;

import javax.servlet.http.HttpServletRequest;

import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;

/**
* MyEclipse Struts Creation date: 05-31-2006
*
* XDoclet definition:
*
* @struts.form name="listForm"
*/
public class ListForm extends ActionForm {

// --------------------------------------------------------- Instance
// Variables
private List addresses = new ArrayList();

private List friends = new ArrayList();

// --------------------------------------------------------- Methods

/**
* Method validate
*
* @param mapping
* @param request
* @return ActionErrors
*/
public ActionErrors validate(ActionMapping mapping,
HttpServletRequest request) {

// TODO Auto-generated method stub
return null;
}

/**
* Method reset
*
* @param mapping
* @param request
*/
public void reset(ActionMapping mapping, HttpServletRequest request) {

  // TODO Auto-generated method stub
  this.addresses.clear();
  this.friends.clear();
}

public List getAddresses() {
return addresses;
}

public void setAddresses(List address) {
this.addresses = address;
}

public void setAddress(int index, String address) {
  if (this.addresses.size() > index) {
   this.addresses.set(index, address);
  } else {
   while( this.addresses.size() < index ) {
    this.addresses.add( null );
   }
   this.addresses.add(index, address);
  }
}

public String getAddress(int index) {
  if (this.addresses.size() > index) {
   return (String) this.addresses.get(index);
  }
  return null;
}

public List getFriends() {
return friends;
}

public void setFriends(List friend) {
this.friends = friend;
}

public void setFriend(int index, String friend) {
  if (this.friends.size() > index) {
   this.friends.set(index, friend);
  } else {
   while( this.friends.size() < index )
   {
    this.friends.add( null );
   }
   this.friends.add(index, friend);
  }
}

public String getFriend(int index) {
  if (this.friends.size() > index) {
   return (String) this.friends.get(index);
  }
  return null;
}
}
ListFormAction.java

//Created by MyEclipse Struts
// XSL source (default): platform:/plugin/com.genuitec.eclipse.cross.easystruts.eclipse_4.1.0/xslt/JavaClass.xsl

package cn.hxex.actionform.struts.action;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

import cn.hxex.actionform.struts.form.ListForm;

/**
* MyEclipse Struts
* Creation date: 05-31-2006
*
* XDoclet definition:
* @struts.action path="/listForm" name="listForm" scope="request" validate="true"
*/
public class ListFormAction extends Action {

// --------------------------------------------------------- Instance Variables

// --------------------------------------------------------- Methods

/**
* Method execute
* @param mapping
* @param form
* @param request
* @param response
* @return ActionForward
*/
public ActionForward execute(
  ActionMapping mapping,
  ActionForm form,
  HttpServletRequest request,
  HttpServletResponse response) {
  ListForm listForm = (ListForm) form;

  return mapping.findForward("display");
}

}

listForm.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-bean" prefix="bean" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>

<html>
<head>
    <title>List-backed Form Property</title>
</head>
<body>
    <h2>List Form Output</h2>
        Your friends:<br />
        Friend 1: <bean:write name="listForm" property="friend[0]"/><br />
        Friend 2: <bean:write name="listForm" property="friend[1]"/><br />
        Friend 3: <bean:write name="listForm" property="friend[2]"/><br />
        Your addresses:<br />
        Address 1: ${listForm.addresses[0]}<br />
        Address 2: ${listForm.addresses[1]}<br />
        Address 3: ${listForm.addresses[2]}<br />
</body>
</html>

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