第15講 struts2標籤巢狀
阿新 • • 發佈：2018-11-11
鏈條方式指，struts.xml中，在一個result結果直接跳轉到另外一個action中，資料可以共享，
1在HeadFirstStruts2chapter02_07中，新建HelloAction2，name2屬性，get() set()方法，在預設的execute()方法中給 name2賦值，
package com.cruise.action;
import com.opensymphony.xwork2.ActionSupport;
public class HelloAction2 extends ActionSupport{
private
public String getName2() {
return name2;
}
public void setName2(String name2) {
this
}
@Override
public String execute() throws Exception {
this.name2="love Ashley";
return SUCCESS;
}
}
2修改HelloAction,寫方法chain()方法，返回字串"chain2"
package com.cruise.action;
import com.opensymphony.xwork2.ActionSupport;
public class HelloAction extends ActionSupport{
private String name ;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String chain(){
return "chain2";
}
}
3配置struts.xml檔案，配置新的
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
<constant name="struts.enable.DynamicMethodInvocation" value="true"/>
<package name="manage" namespace="/" extends="struts-default">
<action name="hello" class="com.cruise.action.HelloAction" >
<result name="chain2" type="chain" >hello2</result>
</action>
<action name="hello2" class="com.cruise.action.HelloAction2" >
<result name="success" type="dispatcher" >success.jsp</result>
</action>
</package>
</struts>
4修改success.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN""http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
name:${name}<br>
naem2:${name2}
</body>
</html>
5index.jsp檔案
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN""http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<a href="hello!chain?name=cruise" target="_blank">內部轉發</a>
</body>
</html>
5測試-執行，檢視${name}和${name2}是否取到值-資料共享
http://localhost:8080/HeadFirstStruts2chapter02_07/