struts2动态方法调用

method属性

在struts.xml文件中的配置如下:

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
   <package name="default"  extends="struts-default">
           <action name="login_add" class="action.HelloWorldAction" method="add"> 
               <result name="add">/add.jsp</result>
           </action>
           <action name="login_delete" class="action.HelloWorldAction" method="delete"> 
               <result name="delete">/delete.jsp</result>
           </action>
   </package>
</struts>

在src/action建立java类HelloWorldAction

package action;

import com.opensymphony.xwork2.ActionSupport;
public class HelloWorldAction extends ActionSupport{
    public String add(){
        return "add";
    }
    public String delete(){
        return "delete";
    }
    @Override
    public String execute() throws Exception{
        // TODO Auto-generated method stub
        System.out.println("执行Action");
        return "success";
    }
}

3.在webRoot下建立两个页面:

add.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
  <body>
       add<br>
  </body>
</html>

delete.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
  <body>
       delete<br>
  </body>
</html>

发布tomcat，输入地址http://localhost:8080/test/login_delete.action
http://localhost:8080/test/login_add.action检验

感叹号方式(不推荐)

在方式下实现动态加载需要加上:
<constant name="structs.enable.DynamicMethodInvocation" value="true"/>

修改struts.xml文件

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
   <constant name="structs.enable.DynamicMethodInvocation" value="true"/>
   <package name="default"  extends="struts-default">
           <action name="login" class="action.HelloWorldAction" > 
               <result name="add">/add.jsp</result>
               <result name="delete">/delete.jsp</result>
           </action>
   </package>
</struts>

键入地址 http://localhost:8080/test/login!add.action
http://localhost:8080/test/login!delete.action进行检验

通配符方式

修改struts.xml文件

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
   <package name="default"  extends="struts-default">
           <action name="login_*" class="action.HelloWorldAction" method="{1}"> 
               <result name="add">/add.jsp</result>
               <result name="delete">/delete.jsp</result>
           </action>
   </package>
</struts>