Action配置（动态方法调用、为Action元素指定method属性、通配符映射）

﹏ヽ暗。殇╰゛Y 2024-02-18 00:02 4阅读 0赞

当用到多个提交按钮时，需要多个Action处理或者一个Action中的不同方法时，通过以下三种方式来进行。

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1、动态方法调用：

案例：多个按钮提交

login3.jsp页面：

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
    <%@ taglib prefix = "s" uri = "/struts-tags" %>
    <%
    String path = request.getContextPath();
    String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
    %>
    
    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
    <html>
      <head>
        <base href="<%=basePath%>">
        
        <title>My JSP 'login3.jsp' starting page</title>
        
    	<meta http-equiv="pragma" content="no-cache">
    	<meta http-equiv="cache-control" content="no-cache">
    	<meta http-equiv="expires" content="0">    
    	<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    	<meta http-equiv="description" content="This is my page">
    	
    
      <script type="text/javascript">
        function login() {
    		var form = document.getElementsByTagName("form")[0];
    		form.action = "LoginAndRegister!login";
    		form.submit();
    	}
    	function register() {
    		var form = document.getElementsByTagName("form")[0];
    		form.action = "LoginAndRegister!register";
    		form.submit();
    	}
      </script>
    
      </head>
      
      <body>
       <s:form action = "" method = "post">
         <s:textfield name = "username" label = "用户名"></s:textfield><br><br>
         <s:password name = "password" label = "密码"></s:password><br><br>
         <s:submit value = "登录" οnclick="login()"></s:submit>  
         <s:submit value = "注册" οnclick="register()"></s:submit>
       </s:form>
      </body>
    </html>

Action页面

package com.action;
    
    import com.opensymphony.xwork2.ActionSupport;
    
    public class LoginAndRegisterAction extends ActionSupport{
      private String username;
      private String password;
      private String tip;//保持输出结果
      
      public String login() {
    	if(username.equals("admin") && password.equals("admin")){
    		this.setTip("欢迎"+username+"登录");
    		return SUCCESS;
    	}
    	return LOGIN;
       }
      
      public String register() {
    	this.setTip("欢迎"+username+"注册");
    	return SUCCESS;
    }
    
    public String getUsername() {
    	return username;
    }
    
    public void setUsername(String username) {
    	this.username = username;
    }
    
    public String getPassword() {
    	return password;
    }
    
    public void setPassword(String password) {
    	this.password = password;
    }
    
    public String getTip() {
    	return tip;
    }
    
    public void setTip(String tip) {
    	this.tip = tip;
    }
      
      
    }

ok3.jsp:

struts.xml配置：

<action name="LoginAndRegister" class = "com.action.LoginAndRegisterAction">
          <result name = "success">/ok3.jsp</result>
          <result name = "login">/login3.jsp</result>
        </action>

2、为Action元素指定method属性  
修改login3.jsp页面中的js代码：

修改struts.xml配置：

<action name="login3" class = "com.action.LoginAndRegisterAction" method = "login">
          <result name = "success">/ok3.jsp</result>
          <result name = "login">/login3.jsp</result>
        </action>
        
        <action name="register3" class = "com.action.LoginAndRegisterAction" method = "register">
           <result name = "success">/ok3.jsp</result>
        </action>

3、通配符映射：

修改login3.jsp页面js代码：

修改struts.xml配置：

<action name="Action_*" class = "com.action.LoginAndRegisterAction" method = "{1}">
          <result name = "success">/ok3.jsp</result>
          <result name = "login">/login3.jsp</result>      
        </action>

[Center]: https://image.dandelioncloud.cn/pgy_files/images/2024/01/29/be2161a5d7644f8eb236abffd4ee8fc9.png