一 视图
1 input.jsp
<%@ page contentType="text/html; charset=GBK" language="java" errorPage="" %>
<%@taglib prefix="s" uri="/struts-tags"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>直接封装成Map</title>
</head>
<body>
<h3>直接封装成Map</h3>
<s:form action="login">
<s:textfield name="users['one'].name" label="第one个用户名"/>
<s:textfield name="users['one'].pass" label="第one个密码"/>
<s:textfield name="users['two'].name" label="第two个用户名"/>
<s:textfield name="users['two'].pass" label="第two个密码"/>
<tr>
<td colspan="2"><s:submit value="转换" theme="simple"/>
<s:reset value="重填" theme="simple"/></td>
</tr>
</s:form>
</body>
</html>
2 welcome.jsp
<%@ page contentType="text/html; charset=GBK" language="java" errorPage="" %>
<%@taglib prefix="s" uri="/struts-tags"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>转换结果</title>
</head>
<body>
<s:actionmessage/>
key为one的用户名为:<s:property value="users['one'].name"/><br/>
key为one的密码为：<s:property value="users['one'].pass"/><br/>
key为two的用户名为:<s:property value="users['two'].name"/><br/>
key为two的密码为：<s:property value="users['two'].pass"/><br/>
</body>
</html>
二 配置文件
<?xml version="1.0" encoding="GBK"?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
"http://struts.apache.org/dtds/struts-2.3.dtd">
<struts>
<package name="lee" extends="struts-default">
<action name="login" class="org.crazyit.app.action.LoginAction">
<result>/WEB-INF/content/welcome.jsp</result>
<result name="error">/WEB-INF/content/welcome.jsp</result>
</action>
<action name="*">
<result>/WEB-INF/content/{1}.jsp</result>
</action>
</package>
</struts>
三 领域模型
package org.crazyit.app.domain;
public class User
{
private String name;
private String pass;
// name的setter和getter方法
public void setName(String name)
{
this.name = name;
}
public String getName()
{
return this.name;
}
// pass的setter和getter方法
public void setPass(String pass)
{
this.pass = pass;
}
public String getPass()
{
return this.pass;
}
}
四 action
package org.crazyit.app.action;
import com.opensymphony.xwork2.ActionSupport;
import java.util.Map;
import org.crazyit.app.domain.*;
public class LoginAction extends ActionSupport
{
// Action类里包含一个Map类型的成员变量
// Map的value类型为User类型
private Map<String , User> users;
// users的setter和getter方法
public void setUsers(Map<String , User> users)
{
this.users = users;
}
public Map<String , User> getUsers()
{
return this.users;
}
public String execute() throws Exception
{
// 在控制台输出Struts 2封装产生的Map对象
System.out.println(getUsers());
// 根据Map集合中key为one的User实例来决定控制逻辑
if (getUsers().get("one").getName().equals("crazyit.org")
&& getUsers().get("one").getPass().equals("leegang") )
{
addActionMessage("登录成功！");
return SUCCESS;
}
addActionMessage("登录失败！！");
return ERROR;
}
}
五 测试