Structs复习 ActionMethod

action在执行的是时候可以不执行excute方法可以由自己制定可以在action标签里指定也可以在方法里动态指定推荐使用后者

jar包

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 
    xmlns="http://java.sun.com/xml/ns/javaee" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
    http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
  
  <filter>
        <filter-name>struts2</filter-name>
        <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
    </filter>

    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
</web-app>

Struct.xml

<?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.devMode" value="true" />
    <package name="user" extends="struts-default" namespace="/user">
        <action name="userAdd" class="com.bjsxt.struts2.user.action.UserAction" method="add">
            <result>/user_add_success.jsp</result>
        </action>
        
        <action name="user" class="com.bjsxt.struts2.user.action.UserAction">
            <result>/user_add_success.jsp</result>
        </action>
    </package>
</struts>

UserAction.java

package com.bjsxt.struts2.user.action;

import com.opensymphony.xwork2.ActionSupport;

public class UserAction extends ActionSupport {
    public String add() {
        return SUCCESS;
    }
    
    
}

index.jsp

<?xml version="1.0" encoding="GB18030" ?>
<%@ page language="java" contentType="text/html; charset=GB18030"
    pageEncoding="GB18030"%>

<% String context = request.getContextPath(); %>

<!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>
<meta http-equiv="Content-Type" content="text/html; charset=GB18030" />
<title>Insert title here</title>
</head>
<body>
Action执行的时候并不一定要执行execute方法<br />
可以在配置文件中配置Action的时候用method=来指定执行哪个方法
也可以在url地址中动态指定（动态方法调用DMI）（推荐）<br />
    <a href="<%=context %>/user/userAdd">添加用户</a>
    <br />
    <a href="<%=context %>/user/user!add">添加用户</a>
    <br />
前者会产生太多的action，所以不推荐使用
    
</body>
</html>

输入

http://localhost:6666/Struts2_0500_ActionMethod/index.jsp

点击第一个

点击第二个

http://localhost:6666/Struts2_0500_ActionMethod/user/user!add

推荐使用第二种在网志里动态制定

Structs复习 ActionMethod

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