struts2--使用list属性同时处理多条注册信息

桃扇骨 2024-02-18 14:06 7阅读 0赞

实现如下：

![Center][]

结果：

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登录界面：

<%@ 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 'index.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">
    
    </head>
    
    <body>
    	<s:form action="login" method="post" theme="simple">
    		<table>
    
    			<tr>
    				<td align="center">用户名</td>
    				<td align="center">密码</td>
    				<td align="center">年龄</td>
    			</tr>
    
    			<s:iterator value="new int[3]" status="ss">
    				<tr>
    					<td><s:textfield name="%{'user['+ #ss.index +'].username'}"></s:textfield></td>
    					<td><s:password name="%{'user['+ #ss.index +'].password'}"></s:password></td>
    					<td><s:textfield name="%{'user['+ #ss.index +'].age'}"></s:textfield></td>
    				</tr>
    			</s:iterator>
    		</table>
    		<s:submit value="提交"></s:submit>
    	</s:form>
    </body>
    </html>

LoginAction:

package com.action;
    
    import java.util.List;
    import com.bean.User;
    import com.opensymphony.xwork2.ActionSupport;
    
    public class LoginAction extends ActionSupport{
      private List<User> user;
      
      public List<User> getUser() {
    	return user;
    }
    
    public void setUser(List<User> user) {
    	this.user = user;
    }
    
    public String execute() {
    	return SUCCESS;
    }
    
    
    
    }

结果界面：

struts.xml:

<?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE struts PUBLIC
        "-//Apache Software Foundation//DTD Struts Configuration 2.1.7//EN"
        "http://struts.apache.org/dtds/struts-2.1.7.dtd">
    <struts>
      <package name="defalut" namespace = "/" extends = "struts-default">
        <action name="login" class = "com.action.LoginAction">
          <result>/ok.jsp</result>
        </action>
      </package>
    </struts>

javaBean:

package com.bean;
    
    public class User {
      private String username ;
      private String password ;
      private String age ;
      
      public String getAge() {
    	return age;
    }
    
    public void setAge(String age) {
    	this.age = age;
    }
    
    public User() {}
      
    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;
    }
      
    }

由于Action中List使用了范性，无需类型转换配置文件，否则需要配置LoginAction-conversion.properties：

Element_user=com.bean.User

[Center]: https://image.dandelioncloud.cn/pgy_files/images/2024/01/29/9d845734bf0d47f480d0abacdecffb05.png
[Center 1]: https://image.dandelioncloud.cn/pgy_files/images/2024/01/29/678db60dc5034895856124078bb595b8.png