JavaWeb_(request和response)用戶登陸註冊模板_基礎版

時間 2020-07-14

標籤 javaweb request response 用戶登陸註冊模板基礎欄目 Java 简体版

原文原文鏈接

　　用戶登陸註冊模板進階版　　傳送門html

用戶登陸註冊模板基礎版java

　　登陸：當用戶登陸成功時，跳轉到personCenter.jsp，當用戶登陸失敗時，跳轉到login.jsp並給出提示數據庫

　　註冊：當用戶註冊成功時，跳轉到login.jsp，當用戶註冊失敗時，跳轉到register.jsp並給出提示jsp

　　personCenter.jsp展現用戶信息ide

　　用戶登陸註冊模板基礎版　　目錄結構【用戶登陸_02版】post

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Insert title here</title>
</head>
<body>

<a href="login.jsp">登陸</a>
<a href="register.jsp">註冊</a>

</body>
</html>

index.jsp

<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Insert title here</title>
</head>
<body>

<%
Object msg = request.getAttribute("message"); if(msg!=null) out.println(msg); %> 登陸<hr>
<form action="login_do.jsp" methon="post"> 用戶名：<input type="text" name="username" /><br/> 密碼 ：<input type="password" name="password" /><br/>

<input type="submit" value="登陸"/>
</form>
</body>
</html>

<%@page import="com.Gary.util.DBUtil" %>
<%@page import="com.Gary.model.User" %>
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Insert title here</title>
</head>
<body>
<%
String username = request.getParameter("username"); String password = request.getParameter("password"); User user = DBUtil.verifyAccount(username,password); if(user==null){ // out.println("登陸失敗，用戶名或密碼錯誤"); request.setAttribute("message","登陸失敗，用戶名或密碼錯誤"); request.getRequestDispatcher("login.jsp").forward(request,response); }else{ // out.println("登陸成功"); //登陸請求的轉發,將數據傳遞給personCenter.jsp頁面 request.setAttribute("user", user); request.getRequestDispatcher("personCenter.jsp").forward(request,response); } %>
</body>
</html>

login_do.jsp

<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Insert title here</title>
</head>
<body>
<%
Object msg = request.getAttribute("message"); if(msg!=null) out.println(msg); %>

<form action="register_do.jsp" methon="post"> 用戶名：<input type="text" name="username" /><br/> 密碼： <input type="password" name="password" /><br/> 年齡： <input type="text" name="age" /><br/> 性別：男<input type="radio" name="sex" value="男" />女<input type="radio" name="sex" value="女"/><br/>

<input type="submit" value="註冊"/>
</form>

</body>
</html>

<%@ page import="com.Gary.util.DBUtil" %>
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Insert title here</title>
</head>
<body>
<%

String username = request.getParameter("username"); String password = request.getParameter("password"); int age = Integer.parseInt(request.getParameter("age")); String sex = request.getParameter("sex"); boolean isSuccess = DBUtil.addUser(username,password,age,sex); //使用請求轉發 if(isSuccess){ request.setAttribute("message", "註冊成功，請登陸"); //經過getRequestDispatcher傳遞路徑將請求轉發給login.jsp request.getRequestDispatcher("login.jsp").forward(request,response); }else{ request.setAttribute("message", "註冊失敗，用戶名重複"); //經過getRequestDispatcher傳遞路徑將請求轉發給login.jsp request.getRequestDispatcher("register.jsp").forward(request,response); } // if(isSuccess){ // out.println(username); // out.println("<font color='green'>註冊成功</font>"); // }else{ // out.println(username); // out.println("<font color='red'>註冊失敗</font>"); // } %>
</body>
</html>

register_do.jsp

<%@ page import="com.Gary.model.User" %>
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Insert title here</title>
</head>
<body>
<% User user = (User)request.getAttribute("user"); %> 用戶名：<%=user.getUsername()%><br/> 年齡：<%=user.getAge()%><br/> 性別：<%=user.getSex()%><br/>
</body>
</html>

personCenter.jsp

package com.Gary.model; public class User { private String username; private String password; private int age; private String sex; public User(String username, String password, int age, String sex) { super(); this.username = username; this.password = password; this.age = age; this.sex = sex; } 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 int getAge() { return age; } public void setAge(int age) { this.age = age; } public String getSex() { return sex; } public void setSex(String sex) { this.sex = sex; } }

User.java

package com.Gary.util; import java.util.HashMap; import java.util.Map; import com.Gary.model.User; public class DBUtil { private static Map<String ,User>db = new HashMap<String,User>(); public static boolean addUser(String username,String password,int age,String sex) { //TODO
        
        if(db.containsKey(username)) { return false; }else { User user=new User(username,password,age,sex); db.put(username, user); return true; } } //帳號校驗
    public static User verifyAccount(String username,String password) { if(db.containsKey(username)) { User user = db.get(username); if(user.getPassword().equals(password)) { return user; }else { return null; } } return null; } }

DBUtil.java

用戶註冊_01版this

　　當用戶點擊主頁面註冊時跳轉到register.jsp頁面，用戶輸入完表單後由register_do.jsp頁面進行處理，戶數據模型驅動User,java和DBUtild.java中對數據進行本地處理spa

　　DBUtild.java對用戶ID進行同名檢測，用戶註冊成功顯示綠色提示信息，用戶註冊失敗顯示紅色提示信息.net

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Insert title here</title>
</head>
<body>

<a>登陸</a>
<a href="register.jsp">註冊</a>

</body>
</html>

index.jsp

<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Insert title here</title>
</head>
<body>

<form action="register_do.jsp" methon="post"> 用戶名：<input type="text" name="username" /><br/> 密碼： <input type="password" name="password" /><br/> 年齡： <input type="text" name="age" /><br/> 性別：男<input type="radio" name="sex" value="男" />女<input type="radio" name="sex" value="女"/><br/>

<input type="submit" value="註冊"/>
</form>

</body>
</html>

<%@ page import="com.Gary.util.DBUtil" %>
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Insert title here</title>
</head>
<body>
<%

String username = request.getParameter("username"); String password = request.getParameter("password"); int age = Integer.parseInt(request.getParameter("age")); String sex = request.getParameter("sex"); boolean isSuccess = DBUtil.addUser(username,password,age,sex); if(isSuccess){ out.println(username); out.println("<font color='green'>註冊成功</font>"); }else{ out.println(username); out.println("<font color='red'>註冊失敗</font>"); } %>
</body>
</html>

register_do.jsp

package com.Gary.model; public class User { private String username; private String password; private int age; private String sex; public User(String username, String password, int age, String sex) { super(); this.username = username; this.password = password; this.age = age; this.sex = sex; } 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 int getAge() { return age; } public void setAge(int age) { this.age = age; } public String getSex() { return sex; } public void setSex(String sex) { this.sex = sex; } }

User.java

package com.Gary.util; import java.util.HashMap; import java.util.Map; import com.Gary.model.User; public class DBUtil { private static Map<String ,User>db = new HashMap<String,User>(); public static boolean addUser(String username,String password,int age,String sex) { //TODO
        
        if(db.containsKey(username)) { return false; }else { User user=new User(username,password,age,sex); db.put(username, user); return true; } } }

DBUtil.java

　　開發註冊界面3d

　　表單

　　用戶表單信息註冊完畢後提交表單給register_do.jsp

<form action="register_do.jsp" methon="post"> 用戶名：<input type="text" name="username" /><br/> 密碼： <input type="password" name="password" /><br/> 年齡： <input type="text" name="age" /><br/> 性別：男<input type="radio" name="sex" value="男" />女<input type="radio" name="sex" value="女"/><br/>

<input type="submit" value="註冊"/>
</form>

　　戶數據模型驅動User,java存儲用戶信息，DBUtil.java運用字典集對數據進行本地存儲

private static Map<String ,User>db = new HashMap<String,User>();

　　經過DBUtil.java中的addUser()方法對用戶進行本地註冊，返回bool值，當用戶註冊ID相同時返回false，不然返回true

if(db.containsKey(username)) { return false; }else { User user=new User(username,password,age,sex); db.put(username, user); return true; }

　　由register_do.java對用戶信息進行校驗

boolean isSuccess = DBUtil.addUser(username,password,age,sex); if(isSuccess){ out.println(username); out.println("<font color='green'>註冊成功</font>"); }else{ out.println(username); out.println("<font color='red'>註冊失敗</font>"); }

用戶註冊_02版

　　當用戶經過首頁直接進入login.jsp時，login.jsp頁面只顯示登陸字樣，用戶經過register.jsp進入login.jsp頁面時，跳轉到login.jsp並提示用戶註冊成功

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Insert title here</title>
</head>
<body>

<a href="login.jsp">登陸</a>
<a href="register.jsp">註冊</a>

</body>
</html>

index.jsp

<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Insert title here</title>
</head>
<body>

<%
Object msg = request.getAttribute("message"); if(msg!=null) out.println(msg); %> 登陸<hr>
<form action="" methon="post"> 用戶名：<input type="text" name="username" /><br/> 密碼 ：<input type="password" name="password" /><br/>

<input type="submit" value="登陸"/>
</form>
</body>
</html>

<%@ page import="com.Gary.util.DBUtil" %>
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Insert title here</title>
</head>
<body>
<%

String username = request.getParameter("username"); String password = request.getParameter("password"); int age = Integer.parseInt(request.getParameter("age")); String sex = request.getParameter("sex"); boolean isSuccess = DBUtil.addUser(username,password,age,sex); //使用請求轉發 if(isSuccess){ request.setAttribute("message", "註冊成功，請登陸"); //經過getRequestDispatcher傳遞路徑將請求轉發給login.jsp request.getRequestDispatcher("login.jsp").forward(request,response); } // if(isSuccess){ // out.println(username); // out.println("<font color='green'>註冊成功</font>"); // }else{ // out.println(username); // out.println("<font color='red'>註冊失敗</font>"); // } %>
</body>
</html>

register_do.jsp

<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Insert title here</title>
</head>
<body>

<form action="register_do.jsp" methon="post"> 用戶名：<input type="text" name="username" /><br/> 密碼： <input type="password" name="password" /><br/> 年齡： <input type="text" name="age" /><br/> 性別：男<input type="radio" name="sex" value="男" />女<input type="radio" name="sex" value="女"/><br/>

<input type="submit" value="註冊"/>
</form>

</body>
</html>

package com.Gary.model; public class User { private String username; private String password; private int age; private String sex; public User(String username, String password, int age, String sex) { super(); this.username = username; this.password = password; this.age = age; this.sex = sex; } 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 int getAge() { return age; } public void setAge(int age) { this.age = age; } public String getSex() { return sex; } public void setSex(String sex) { this.sex = sex; } }

User.java

package com.Gary.util; import java.util.HashMap; import java.util.Map; import com.Gary.model.User; public class DBUtil { private static Map<String ,User>db = new HashMap<String,User>(); public static boolean addUser(String username,String password,int age,String sex) { //TODO
        
        if(db.containsKey(username)) { return false; }else { User user=new User(username,password,age,sex); db.put(username, user); return true; } } }

DBUtil.Java

　　當登陸成功時，經過在register_do.jsp頁面中表單傳遞時進行轉發給login,jsp頁面【跳轉到login.jsp頁面】

boolean isSuccess = DBUtil.addUser(username,password,age,sex); //使用請求轉發
if(isSuccess){ request.setAttribute("message", "註冊成功，請登陸"); //經過getRequestDispatcher傳遞路徑將請求轉發給login.jsp
    request.getRequestDispatcher("login.jsp").forward(request,response); }

<%
Object msg = request.getAttribute("message"); if(msg!=null) out.println(msg); %>

用戶登陸_01版

　　當用戶登陸後，login.jsp表單中的信息與數據庫中的帳號進行匹配，當用戶的帳號存在時且密碼輸入正確，提示用戶登陸成功，用戶名不存在或用戶名與帳號匹配錯誤時提示登陸失敗

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Insert title here</title>
</head>
<body>

<a href="login.jsp">登陸</a>
<a href="register.jsp">註冊</a>

</body>
</html>

index.jsp

<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Insert title here</title>
</head>
<body>

<%
Object msg = request.getAttribute("message"); if(msg!=null) out.println(msg); %> 登陸<hr>
<form action="login_do.jsp" methon="post"> 用戶名：<input type="text" name="username" /><br/> 密碼 ：<input type="password" name="password" /><br/>

<input type="submit" value="登陸"/>
</form>
</body>
</html>

<%@page import="com.Gary.util.DBUtil" %>
<%@page import="com.Gary.model.User" %>
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Insert title here</title>
</head>
<body>
<%
String username = request.getParameter("username"); String password = request.getParameter("password"); User user = DBUtil.verifyAccount(username,password); if(user==null){ out.println("登陸失敗，用戶名或密碼錯誤"); }else{ out.println("登陸成功"); } %>
</body>
</html>

login_do.html

<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Insert title here</title>
</head>
<body>

<form action="register_do.jsp" methon="post"> 用戶名：<input type="text" name="username" /><br/> 密碼： <input type="password" name="password" /><br/> 年齡： <input type="text" name="age" /><br/> 性別：男<input type="radio" name="sex" value="男" />女<input type="radio" name="sex" value="女"/><br/>

<input type="submit" value="註冊"/>
</form>

</body>
</html>

Vregister.jsp

<%@ page import="com.Gary.util.DBUtil" %>
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Insert title here</title>
</head>
<body>
<%

String username = request.getParameter("username"); String password = request.getParameter("password"); int age = Integer.parseInt(request.getParameter("age")); String sex = request.getParameter("sex"); boolean isSuccess = DBUtil.addUser(username,password,age,sex); //使用請求轉發 if(isSuccess){ request.setAttribute("message", "註冊成功，請登陸"); //經過getRequestDispatcher傳遞路徑將請求轉發給login.jsp request.getRequestDispatcher("login.jsp").forward(request,response); } // if(isSuccess){ // out.println(username); // out.println("<font color='green'>註冊成功</font>"); // }else{ // out.println(username); // out.println("<font color='red'>註冊失敗</font>"); // } %>
</body>
</html>

register_do.jsp

package com.Gary.model; public class User { private String username; private String password; private int age; private String sex; public User(String username, String password, int age, String sex) { super(); this.username = username; this.password = password; this.age = age; this.sex = sex; } 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 int getAge() { return age; } public void setAge(int age) { this.age = age; } public String getSex() { return sex; } public void setSex(String sex) { this.sex = sex; } }

User.java

package com.Gary.util; import java.util.HashMap; import java.util.Map; import com.Gary.model.User; public class DBUtil { private static Map<String ,User>db = new HashMap<String,User>(); public static boolean addUser(String username,String password,int age,String sex) { //TODO
        
        if(db.containsKey(username)) { return false; }else { User user=new User(username,password,age,sex); db.put(username, user); return true; } } //帳號校驗
    public static User verifyAccount(String username,String password) { if(db.containsKey(username)) { User user = db.get(username); if(user.getPassword().equals(password)) { return user; }else { return null; } } return null; } }

DBUtil.java

　　當用戶提交登陸信息時，由login_do處理用戶登陸的信息，

　　經過DBUtil.java中的verifyAccount()進行用戶校驗，當用戶名存在並密碼與用戶相匹配時返回true

public static User verifyAccount(String username,String password) { if(db.containsKey(username)) { User user = db.get(username); if(user.getPassword().equals(password)) { return user; }else { return null; } } return null; }

　　login_do.jsp中進行帳號校驗

User user = DBUtil.verifyAccount(username,password); if(user==null){ out.println("登陸失敗，用戶名或密碼錯誤"); }else{ out.println("登陸成功"); }

用戶登陸_02版

　　登陸：當用戶登陸成功時，跳轉到personCenter.jsp，當用戶登陸失敗時，跳轉到login.jsp並給出提示

　　註冊：當用戶註冊成功時，跳轉到login.jsp，當用戶註冊失敗時，跳轉到register.jsp並給出提示

　　personCenter.jsp展現用戶信息

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Insert title here</title>
</head>
<body>

<a href="login.jsp">登陸</a>
<a href="register.jsp">註冊</a>

</body>
</html>

index.jsp

<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Insert title here</title>
</head>
<body>

<%
Object msg = request.getAttribute("message"); if(msg!=null) out.println(msg); %> 登陸<hr>
<form action="login_do.jsp" methon="post"> 用戶名：<input type="text" name="username" /><br/> 密碼 ：<input type="password" name="password" /><br/>

<input type="submit" value="登陸"/>
</form>
</body>
</html>

<%@page import="com.Gary.util.DBUtil" %>
<%@page import="com.Gary.model.User" %>
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Insert title here</title>
</head>
<body>
<%
String username = request.getParameter("username"); String password = request.getParameter("password"); User user = DBUtil.verifyAccount(username,password); if(user==null){ // out.println("登陸失敗，用戶名或密碼錯誤"); request.setAttribute("message","登陸失敗，用戶名或密碼錯誤"); request.getRequestDispatcher("login.jsp").forward(request,response); }else{ // out.println("登陸成功"); //登陸請求的轉發,將數據傳遞給personCenter.jsp頁面 request.setAttribute("user", user); request.getRequestDispatcher("personCenter.jsp").forward(request,response); } %>
</body>
</html>

login_do.jsp

<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Insert title here</title>
</head>
<body>
<%
Object msg = request.getAttribute("message"); if(msg!=null) out.println(msg); %>

<form action="register_do.jsp" methon="post"> 用戶名：<input type="text" name="username" /><br/> 密碼： <input type="password" name="password" /><br/> 年齡： <input type="text" name="age" /><br/> 性別：男<input type="radio" name="sex" value="男" />女<input type="radio" name="sex" value="女"/><br/>

<input type="submit" value="註冊"/>
</form>

</body>
</html>

<%@ page import="com.Gary.util.DBUtil" %>
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Insert title here</title>
</head>
<body>
<%

String username = request.getParameter("username"); String password = request.getParameter("password"); int age = Integer.parseInt(request.getParameter("age")); String sex = request.getParameter("sex"); boolean isSuccess = DBUtil.addUser(username,password,age,sex); //使用請求轉發 if(isSuccess){ request.setAttribute("message", "註冊成功，請登陸"); //經過getRequestDispatcher傳遞路徑將請求轉發給login.jsp request.getRequestDispatcher("login.jsp").forward(request,response); }else{ request.setAttribute("message", "註冊失敗，用戶名重複"); //經過getRequestDispatcher傳遞路徑將請求轉發給login.jsp request.getRequestDispatcher("register.jsp").forward(request,response); } // if(isSuccess){ // out.println(username); // out.println("<font color='green'>註冊成功</font>"); // }else{ // out.println(username); // out.println("<font color='red'>註冊失敗</font>"); // } %>
</body>
</html>

register_do.jsp

<%@ page import="com.Gary.model.User" %>
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Insert title here</title>
</head>
<body>
<% User user = (User)request.getAttribute("user"); %> 用戶名：<%=user.getUsername()%><br/> 年齡：<%=user.getAge()%><br/> 性別：<%=user.getSex()%><br/>
</body>
</html>

personCenter.jsp

package com.Gary.model; public class User { private String username; private String password; private int age; private String sex; public User(String username, String password, int age, String sex) { super(); this.username = username; this.password = password; this.age = age; this.sex = sex; } 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 int getAge() { return age; } public void setAge(int age) { this.age = age; } public String getSex() { return sex; } public void setSex(String sex) { this.sex = sex; } }

User.java

package com.Gary.model; public class User { private String username; private String password; private int age; private String sex; public User(String username, String password, int age, String sex) { super(); this.username = username; this.password = password; this.age = age; this.sex = sex; } 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 int getAge() { return age; } public void setAge(int age) { this.age = age; } public String getSex() { return sex; } public void setSex(String sex) { this.sex = sex; } }

DBUtil.java

　　personCenter.jsp經過request內置對象獲得用戶信息後輸出其信息

<% User user = (User)request.getAttribute("user"); %> 用戶名：<%=user.getUsername()%><br/> 年齡：<%=user.getAge()%><br/> 性別：<%=user.getSex()%><br/>

　　login_do.jsp處理用戶登陸成功時和登陸失敗時事件

<%
String username = request.getParameter("username"); String password = request.getParameter("password"); User user = DBUtil.verifyAccount(username,password); if(user==null){ // out.println("登陸失敗，用戶名或密碼錯誤"); request.setAttribute("message","登陸失敗，用戶名或密碼錯誤"); request.getRequestDispatcher("login.jsp").forward(request,response); }else{ // out.println("登陸成功"); //登陸請求的轉發,將數據傳遞給personCenter.jsp頁面 request.setAttribute("user", user); request.getRequestDispatcher("personCenter.jsp").forward(request,response); } %>

　　register_do.jsp處理用戶註冊成功時和註冊失敗時事件

<%

String username = request.getParameter("username"); String password = request.getParameter("password"); int age = Integer.parseInt(request.getParameter("age")); String sex = request.getParameter("sex"); boolean isSuccess = DBUtil.addUser(username,password,age,sex); //使用請求轉發 if(isSuccess){ request.setAttribute("message", "註冊成功，請登陸"); //經過getRequestDispatcher傳遞路徑將請求轉發給login.jsp request.getRequestDispatcher("login.jsp").forward(request,response); }else{ request.setAttribute("message", "註冊失敗，用戶名重複"); //經過getRequestDispatcher傳遞路徑將請求轉發給login.jsp request.getRequestDispatcher("register.jsp").forward(request,response); } // if(isSuccess){ // out.println(username); // out.println("<font color='green'>註冊成功</font>"); // }else{ // out.println(username); // out.println("<font color='red'>註冊失敗</font>"); // } %>