由「登陸」開始——使用領域對象接收用戶輸入

時間 2019-11-17

標籤登陸開始使用領域對象接收用戶輸入简体版

原文原文鏈接

Struts2支持直接使用領域對象接收用戶輸入的數據。

login.jsp
html

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<html>
  <head>
    <title>My JSP 'login.jsp' starting page</title>
  </head> 
  <body>
  	<form action="/learnstructslogin/way2/login.action" method="post">
  		<table>
  			<tr>
  				<td>用戶名：</td>
  				<td><input type="text" name="user.username"></td>
  			</tr>
  			<tr>
  				<td>密碼：</td>
  				<td><input type="password" name="user.password"></td>
  			</tr>
  			<tr>
  				<td><input type="reset" value="重置"></td>
  				<td><input type="submit" value="提交"></td>
  			</tr>
  		</table>
  	</form>
  </body>
</html>

領域對象User類：User.java

package com.pei.learnstruts.login.way2;

public class User {
	private String username;
	private String password;
	
	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;
	}	
}

LoginAction.java

package com.pei.learnstruts.login.way1;

import com.opensymphony.xwork2.Action;

public class LoginAction implements Action{
	
	private User user;
	
	public String execute() throws Exception{
		System.out.println("123");
		if(user.getUsername().equals("xupei")&&user.getPassword().equals("123456")){
			return SUCCESS;
		}else{
			return ERROR;
		}
	}

	public User getUser() {
		return user;
	}

	public void setUser(User user) {
		this.user = user;
	}
}

struts.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
	"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
	"http://struts.apache.org/dtds/struts-2.3.dtd">

<struts>
	<package name="way1"  namespace="/way1" extends="struts-default">
		<action name="login" class="com.pei.learnstruts.login.way1.LoginAction">
			<result name="success">/way1/success.jsp</result>
			<result name="error">/way1/error.jsp</result>
		</action>
	</package>
</struts>

success.jsp

<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
<%@ taglib prefix="s" uri="/struts-tags" %>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>My JSP 'success.jsp' starting page</title>
  </head>
  
  <body>
    SUSSESS. <br>
    <h3><s:property value="user.username"/></h3>
  </body>
</html>

error.jsp

<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
<html>
  <head>
    <title>My JSP 'error.jsp' starting page</title>
  </head>
  
  <body>
    ERROR. <br>
  </body>
</html>

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