• struts2-2-用户自定义action的3种方法


    一:导入jar包

          

    二:导入struts.xml

         配置struts.xml  

        

    复制代码
    <struts>
     <constant name="struts.devMode" value="true" />
    <constant name="struts.action.extension" value="do,qq"/> <package name="default" namespace="/" extends="struts-default"> <action name="hello"> <result> /hello.jsp </result> </action> </package> <!-- Add packages here --> </struts>
    复制代码

     三:配置web.xml

        (1)找web.xml

        (2)关联源代码(JAVA):

     struts.jar-->properties-->Java Resources Attach-->External location-->

       (3)修改内容

    复制代码
    <?xml version="1.0" encoding="UTF-8"?>
    <web-app id="WebApp_9" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    复制代码
     1 <?xml version="1.0" encoding="UTF-8"?>
     2 <web-app id="WebApp_9" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
     3          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     4          xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
     5 
     6     <display-name>Struts Blank</display-name>
     7 
     8     <filter>
     9         <filter-name>struts2</filter-name>
    10         <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
    11     </filter>
    12 
    13     <filter-mapping>
    14         <filter-name>struts2</filter-name>
    15         <url-pattern>/*</url-pattern>
    16     </filter-mapping>
    17    
    18 </web-app>
    复制代码
    
    
    
     
    复制代码

    四:新建hello.jsp

    复制代码
     1 <%@ page language="java" contentType="text/html; charset=ISO-8859-1"
     2     pageEncoding="ISO-8859-1"%>
     3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
     4 <html>
     5 <head>
     6 <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
     7 <title>Insert title here</title>
     8 </head>
     9 <body>
    10 helloStruts2!!!
    11 </body>
    12 </html>
    复制代码

    五:(1)普通的JAVA类

           

    1 package nuc.sw.action;
    2 
    3 public class HelloAction1 {
    4  public String execute() throws Exception{
    5      return "OK"; 
    6  }
    7 }

      (2)实现接口Action的类

     1 package nuc.sw.action;
     2 
     3 import com.opensymphony.xwork2.Action;
     4 
     5 public class HelloAction2 implements Action {
     6 
     7     @Override
     8     public String execute() throws Exception {
     9         // TODO Auto-generated method stub
    10         return SUCCESS;
    11     }public HelloAction2() {
    12         // TODO Auto-generated constructor stub
    13     }
    14 }

    (3)继承ActionSupport类

     1 package nuc.sw.action;
     2 
     3 import com.opensymphony.xwork2.ActionSupport;
     4 
     5 public class HelloAction3 extends ActionSupport {
     6 @Override
     7 public String execute() throws Exception {
     8     // TODO Auto-generated method stub
     9     return SUCCESS;
    10 }
    11 }

    (4)修改struts.xml

     1  <package name="default" namespace="/" extends="struts-default">
     2      <action name="hello1"  class="nuc.sw.action.HelloAction1" method="">
     3          <result name="OK">
     4              /hello.jsp
     5          </result>
     6      </action>
     7       <action name="hello2"  class="nuc.sw.action.HelloAction2" method="">
     8          <result name="success">
     9              /hello.jsp
    10          </result>
    11      </action>
    12       <action name="hello3"  class="nuc.sw.action.HelloAction3" method="">
    13          <result name="success">
    14              /hello.jsp
    15          </result>
    16      </action>
    17  </package>

    六:执行结果

    (1):普通的JAVA类

    (2):实现接口的Action类

    (3):继承ActionSupport类

             

         

     (4):修改action后缀名

    <constant name="struts.action.extension" value="do,qq"/>

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  • 原文地址:https://www.cnblogs.com/Z-D-/p/5897518.html
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