ActionForm DynamActionForm LazyValidatorForm DynamValidateForm 使用

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1) ActionForm
   org.apache.struts.action.ActionForm
   获取表单数据的public 属性
(2) DynamActionForm
   org.apache.struts.action
   为了解决ActionForm膨胀而引入的ActionForm,不需要创建多余的formBean ,只需要子配置文件里面配置属性就可以了
(3) LazyValidatorForm
   org.apache.struts.validator
   struts 中LazyValidatorForm特别适用于FormBean中并不包含POJO商业对象所有属性的情况，
   因为通常项目里都属于这种情况，所以springside默认使用lazyValidatorForm.
   注意的地方就是Action 的validate 属性要改为false validate="false".
   LazyValidatorForm 既不要创建多余的FormBen 也不需要配置里配置属性，就可以拿到页面表单的数据
(4)DynamValidateForm
   基于服务器的验证，对于一般的验证可以在页面用js 进行验证，如果是系统安全性要求高，则用服务器端验证。(

eg:

/**login.jsp*******************************************************************/

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
    <% String path = request.getContextPath(); %>
    <title>login</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
</head>
<body>

</hr>

年龄：<input type="text" name="age" value="${userForm.map.age}"/> </br>
<input type="submit" value="动态ActionForm提交">
</form>-->

<form name="form1" method="post" action="<%=path%>/login.do?method=login">
    姓名：<input type="text" name="name" value=""/> </br>
<input type="submit" value="懒惰ActionForm提交">
</form>
</body>
</html>

/*********UserForm ******************************************************************/

package cn.com.chenlly.ssh.forms;

import org.apache.struts.action.ActionForm;

/**
* @ Class User.java
* @ Description
* @ Company OpenData
* @ Author Chenlly E-mail: Chenlly99@Gmail.com
* @ Version 1.0
* @ Date Dec 20, 2009
*/
public class UserForm extends ActionForm {

private String name;

private Integer age;

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public Integer getAge() {
return age;
}

public void setAge(Integer age) {
this.age = age;
}
}

/******struts-config.xml************************************************************/

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 1.3//EN"
"http://struts.apache.org/dtds/struts-config_1_3.dtd">

<struts-config>
<form-beans>
  
  
    <form-property name="age" type="java.lang.Double"/>
  </form-bean>-->
    
  <form-bean name="userForm" type="org.apache.struts.validator.LazyValidatorForm"/>
</form-beans>


<action-mappings>
  <action name="userForm" path="/login" scope="request"
   parameter="method" type="cn.com.chenlly.ssh.actions.LoginAction" validate="false">
    <forward name="login" path="/login.jsp"/>
  </action>
</action-mappings>
</struts-config>

/***LoginAction ***************************************************************/

package cn.com.chenlly.ssh.actions;

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 org.apache.struts.action.DynaActionForm;
import org.apache.struts.actions.DispatchAction;
import org.apache.struts.validator.LazyValidatorForm;

import cn.com.chenlly.ssh.forms.UserForm;

/**
* @ Class LoginAction.java
* @ Description
* @ Company OpenData
* @ Author Chenlly E-mail: Chenlly99@Gmail.com
* @ Version 1.0
* @ Date Dec 20, 2009
*/
public class LoginAction extends DispatchAction {

public ActionForward login(ActionMapping mapping, ActionForm form, HttpServletRequest request,HttpServletResponse response){
  /*普通ActionForm
  UserForm gUserForm = (UserForm) form;
   */
  /*动态ActionForm
  DynaActionForm dUserForm = (DynaActionForm) form;
  */
  /*懒惰的ActionForm*/
  LazyValidatorForm lUserForm = (LazyValidatorForm) form;
  //直接取到表单的值，不需要创建formBean 和配置属性
  lUserForm.get("name");
  System.out.println("name:"+lUserForm.get("name"));
  return mapping.findForward("login");
}
}