搭建Spring+Springmvc+jdbc框架，實現用戶登錄和注銷功能

本文轉載自查看原文 2020-01-21 16:18 729 SpringMVC

為什么要學習這個框架，因為在實際的項目開發中，大多都是互聯網項目，現在這些項目對性能的要求比較高，所以有必要學習一下這個框架。

首先是項目的整體結構：

 1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <!DOCTYPE html>
 4 <html>
 5 <head lang="en">
 6     <meta charset="UTF-8">
 7     <title>系統登錄 - 超市訂單管理系統</title>
 8     <link type="text/css" rel="stylesheet" href="${pageContext.request.contextPath }/statics/css/style.css" />
 9     <script type="text/javascript">
10     /* if(top.location!=self.location){ 11  top.location=self.location; 12  } */
13     </script>
14 </head>
15 <body class="login_bg">
16     <section class="loginBox">
17         <header class="loginHeader">
18             <h1>超市訂單管理系統</h1>
19         </header>
20         <section class="loginCont">
21             <form class="loginForm" action="${pageContext.request.contextPath }/user/doLogin.html"  name="actionForm" id="actionForm"  method="post" >
22                 <div class="info">${error }</div>
23                 <div class="inputbox">
24                     <label for="user">用戶名：</label>
25                     <input type="text" class="input-text" id="userCode" name="userCode" placeholder="請輸入用戶名" required/>
26                 </div>    
27                 <div class="inputbox">
28                     <label for="mima">密碼：</label>
29                     <input type="password" id="userPassword" name="userPassword" placeholder="請輸入密碼" required/>
30                 </div>    
31                 <div class="subBtn">
32                     <input type="submit" value="登錄"/>
33                     <input type="reset" value="重置"/>
34                 </div>    
35             </form>
36         </section>
37     </section>
38 </body>
39 </html>　　　　　　

foot.jsp

 1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 
 4 <footer class="footer">
 5  版權歸北大青鳥  6 </footer>
 7 <script type="text/javascript" src="${pageContext.request.contextPath }/statics/js/time.js"></script>
 8 <script type="text/javascript" src="${pageContext.request.contextPath }/statics/js/jquery-1.8.3.min.js"></script>
 9 <script type="text/javascript" src="${pageContext.request.contextPath }/statics/js/common.js"></script>
10 <script type="text/javascript" src="${pageContext.request.contextPath }/statics/calendar/WdatePicker.js"></script>
11 </body>
12 </html>

head.jsp

 1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
 4 <%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>    
 5 <!DOCTYPE html>
 6 <html>
 7 <head lang="en">
 8     <meta charset="UTF-8">
 9     <title>超市訂單管理系統</title>
10     <link type="text/css" rel="stylesheet" href="${pageContext.request.contextPath }/statics/css/style.css" />
11     <link type="text/css" rel="stylesheet" href="${pageContext.request.contextPath }/statics/css/public.css" />
12 </head>
13 <body>
14 <!--頭部-->
15     <header class="publicHeader">
16         <h1>超市訂單管理系統</h1>
17         <div class="publicHeaderR">
18             <p><span>下午好！</span><span style="color: #fff21b"> ${userSession.userName }</span> , 歡迎你！</p>
19             <a href="${pageContext.request.contextPath }/jsp/logout.do">退出</a>
20         </div>
21     </header>
22 <!--時間-->
23     <section class="publicTime">
24         <span id="time">2015年1月1日 11:11  星期一</span>
25         <a href="#">溫馨提示：為了能正常瀏覽，請使用高版本瀏覽器！（IE10+）</a>
26     </section>
27  <!--主體內容-->
28  <section class="publicMian ">
29      <div class="left">
30          <h2 class="leftH2"><span class="span1"></span>功能列表 <span></span></h2>
31          <nav>
32              <ul class="list">
33                  <li ><a href="${pageContext.request.contextPath }/jsp/bill.do?method=query">訂單管理</a></li>
34               <li><a href="${pageContext.request.contextPath }/jsp/provider.do?method=query">供應商管理</a></li>
35               <li><a href="${pageContext.request.contextPath }/jsp/user.do?method=query">用戶管理</a></li>
36               <li><a href="${pageContext.request.contextPath }/jsp/pwdmodify.jsp">密碼修改</a></li>
37               <li><a href="${pageContext.request.contextPath }/jsp/logout.do">退出系統</a></li>
38              </ul>
39          </nav>
40      </div>
41      <input type="hidden" id="path" name="path" value="${pageContext.request.contextPath }"/>
42      <input type="hidden" id="referer" name="referer" value="<%=request.getHeader("Referer")%>"/>

frame.jsp

 1 <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
 2 <%@include file="/WEB-INF/jsp/common/head.jsp"%>
 3     <div class="right">
 4         <img class="wColck" src="${pageContext.request.contextPath }/statics/images/clock.jpg" alt=""/>
 5         <div class="wFont">
 6             <h2>${userSession.userName }</h2>
 7             <p>歡迎來到超市訂單管理系統!</p>
 8         </div>
 9     </div>
10 </section>
11 <%@include file="/WEB-INF/jsp/common/foot.jsp" %>

UserController.java

 1 package cn.smbms.controller;  2 import javax.annotation.Resource;  3 import javax.servlet.http.HttpServletRequest;  4 import javax.servlet.http.HttpSession;  5 
 6 import org.apache.log4j.Logger;  7 import org.springframework.stereotype.Controller;  8 import org.springframework.web.bind.annotation.RequestMapping;  9 import org.springframework.web.bind.annotation.RequestMethod; 10 import org.springframework.web.bind.annotation.RequestParam; 11 
12 import cn.smbms.tools.Constants; 13 
14 import cn.smbms.pojo.User; 15 import cn.smbms.service.user.UserService; 16 
17 @Controller 18 @RequestMapping("/user") 19 public class UserController{ 20     private Logger logger = Logger.getLogger(UserController.class); 21  @Resource 22  private UserService userService; 23 /*    @RequestMapping({"/welcome","/"}) 24  public String welcome(String username){ 25         logger.info("welcome, username:" + username); 26         return "index"; 27     }*/
28     @RequestMapping(value="/login.html") 29  public String login(){ 30         logger.info("進入UserController login=========="); 31         return "login";//要跳轉到的邏輯視圖 32  } 33     //實現用戶的登錄 34     //如果用戶登錄成功之后，將用戶信息放在session中 35     //如果用戶登陸失敗，將用戶頁面錄入的信息放入到request作用域中 36     @RequestMapping(value="/doLogin.html",method=RequestMethod.POST) 37  public String doLogin(@RequestParam String userCode,@RequestParam String userPassword,HttpSession session,HttpServletRequest request){ 38         logger.info("進入UserController doLogin=========="); 39         //調用service方法進行用戶匹配 40         User user = userService.login(userCode, userPassword); 41         if(user==null){ 42             //如果用戶登陸失敗的話,跳轉到登錄頁面 43             request.setAttribute("error", "用戶名或密碼不正確"); 44             return "login"; 45         }else{ 46  session.setAttribute(Constants.USER_SESSION, user); 47             return "redirect:/user/main.html"; 48  } 49     
50  } 51     
52     @RequestMapping(value="main.html") 53  public String main(HttpSession session){ 54         //用session進行判斷，如果session中有值，則可以讓其進行跳轉到系統首頁面 55         //如果session中沒有值，則讓用戶繼續跳轉到系統登陸頁面 56         if(session.getAttribute(Constants.USER_SESSION)==null){ 57             return "redirect:/user/login.html"; 58  } 59         logger.info("進入UserController doLogin=========="); 60         return "frame"; 61  } 62 }

UserDao.java

/**
* 通過userCode獲取User
* @param connection
* @param userCode
* @return
* @throws Exception
*/
public User getLoginUser(Connection connection,String userCode)throws Exception;

UserDaoImpl.java

 1  @Override  2  public User getLoginUser(Connection connection, String userCode)  3  throws Exception {  4         // TODO Auto-generated method stub  5         PreparedStatement pstm = null;  6         ResultSet rs = null;  7         User user = null;  8         if(null != connection){  9             String sql = "select * from smbms_user where userCode=?"; 10             Object[] params = {userCode}; 11             rs = BaseDao.execute(connection, pstm, rs, sql, params); 12             if(rs.next()){ 13                 user = new User(); 14                 user.setId(rs.getInt("id")); 15                 user.setUserCode(rs.getString("userCode")); 16                 user.setUserName(rs.getString("userName")); 17                 user.setUserPassword(rs.getString("userPassword")); 18                 user.setGender(rs.getInt("gender")); 19                 user.setBirthday(rs.getDate("birthday")); 20                 user.setPhone(rs.getString("phone")); 21                 user.setAddress(rs.getString("address")); 22                 user.setUserRole(rs.getInt("userRole")); 23                 user.setCreatedBy(rs.getInt("createdBy")); 24                 user.setCreationDate(rs.getTimestamp("creationDate")); 25                 user.setModifyBy(rs.getInt("modifyBy")); 26                 user.setModifyDate(rs.getTimestamp("modifyDate")); 27  } 28  BaseDao.closeResource(null, pstm, rs); 29  } 30         return user; 31     }

UserService.java

1     /**
2      * 用戶登錄 3      * @param userCode 4      * @param userPassword 5      * @return
6      */
7     public User login(String userCode,String userPassword);

UserServiceImpl.java

 1 package cn.smbms.service.user;  2 
 3 import java.sql.Connection;  4 import java.sql.SQLException;  5 import java.util.List;  6 
 7 import javax.annotation.Resource;  8 
 9 import org.springframework.stereotype.Service;  10 import cn.smbms.dao.BaseDao;  11 import cn.smbms.dao.user.UserDao;  12 import cn.smbms.dao.user.UserDaoImpl;  13 import cn.smbms.pojo.User;  14 
 15 /**
 16  * service層捕獲異常，進行事務處理  17  * 事務處理：調用不同dao的多個方法，必須使用同一個connection（connection作為參數傳遞）  18  * 事務完成之后，需要在service層進行connection的關閉，在dao層關閉（PreparedStatement和ResultSet對象）  19  * @author Administrator  20  *
 21  */
 22 @Service  23 public class UserServiceImpl implements UserService{  24  @Resource  25  private UserDao userDao;  26     //因為加上了注解之后，下面的這段代碼就不需要了，可以注釋掉，現在已經創建了new UserDaoImpl()  27     /*public UserServiceImpl(){  28         userDao = new UserDaoImpl();  29     }*/
 30  @Override  31  public boolean add(User user) {  32         // TODO Auto-generated method stub  33         
 34         boolean flag = false;  35         Connection connection = null;  36  try {  37             connection = BaseDao.getConnection();  38             connection.setAutoCommit(false);//開啟JDBC事務管理  39             int updateRows = userDao.add(connection,user);  40  connection.commit();  41             if(updateRows > 0){  42                 flag = true;  43                 System.out.println("add success!");  44             }else{  45                 System.out.println("add failed!");  46  }  47             
 48  } catch (Exception e) {  49             // TODO Auto-generated catch block  50  e.printStackTrace();  51  try {  52                 System.out.println("rollback==================");  53  connection.rollback();  54  } catch (SQLException e1) {  55                 // TODO Auto-generated catch block  56  e1.printStackTrace();  57  }  58  }finally{  59             //在service層進行connection連接的關閉  60  BaseDao.closeResource(connection, null, null);  61  }  62         return flag;  63  }  64  @Override  65  public User login(String userCode, String userPassword) {  66         // TODO Auto-generated method stub  67         Connection connection = null;  68         User user = null;  69  try {  70             connection = BaseDao.getConnection();  71             user = userDao.getLoginUser(connection, userCode);  72  } catch (Exception e) {  73             // TODO Auto-generated catch block  74  e.printStackTrace();  75  }finally{  76  BaseDao.closeResource(connection, null, null);  77  }  78         
 79         //匹配密碼  80         if(null != user){  81             if(!user.getUserPassword().equals(userPassword))  82                 user = null;  83  }  84         
 85         return user;  86  }  87  @Override  88     public List<User> getUserList(String queryUserName,int queryUserRole,int currentPageNo, int pageSize) {  89         // TODO Auto-generated method stub  90         Connection connection = null;  91         List<User> userList = null;  92         System.out.println("queryUserName ---- > " + queryUserName);  93         System.out.println("queryUserRole ---- > " + queryUserRole);  94         System.out.println("currentPageNo ---- > " + currentPageNo);  95         System.out.println("pageSize ---- > " + pageSize);  96  try {  97             connection = BaseDao.getConnection();  98             userList = userDao.getUserList(connection, queryUserName,queryUserRole,currentPageNo,pageSize);  99  } catch (Exception e) { 100             // TODO Auto-generated catch block 101  e.printStackTrace(); 102  }finally{ 103  BaseDao.closeResource(connection, null, null); 104  } 105         return userList; 106  } 107  @Override 108  public User selectUserCodeExist(String userCode) { 109         // TODO Auto-generated method stub 110         Connection connection = null; 111         User user = null; 112  try { 113             connection = BaseDao.getConnection(); 114             user = userDao.getLoginUser(connection, userCode); 115  } catch (Exception e) { 116             // TODO Auto-generated catch block 117  e.printStackTrace(); 118  }finally{ 119  BaseDao.closeResource(connection, null, null); 120  } 121         return user; 122  } 123  @Override 124  public boolean deleteUserById(Integer delId) { 125         // TODO Auto-generated method stub 126         Connection connection = null; 127         boolean flag = false; 128  try { 129             connection = BaseDao.getConnection(); 130             if(userDao.deleteUserById(connection,delId) > 0) 131                 flag = true; 132  } catch (Exception e) { 133             // TODO Auto-generated catch block 134  e.printStackTrace(); 135  }finally{ 136  BaseDao.closeResource(connection, null, null); 137  } 138         return flag; 139  } 140  @Override 141  public User getUserById(String id) { 142         // TODO Auto-generated method stub 143         User user = null; 144         Connection connection = null; 145  try{ 146             connection = BaseDao.getConnection(); 147             user = userDao.getUserById(connection,id); 148  }catch (Exception e) { 149             // TODO: handle exception 150  e.printStackTrace(); 151             user = null; 152  }finally{ 153  BaseDao.closeResource(connection, null, null); 154  } 155         return user; 156  } 157  @Override 158  public boolean modify(User user) { 159         // TODO Auto-generated method stub 160         Connection connection = null; 161         boolean flag = false; 162  try { 163             connection = BaseDao.getConnection(); 164             if(userDao.modify(connection,user) > 0) 165                 flag = true; 166  } catch (Exception e) { 167             // TODO Auto-generated catch block 168  e.printStackTrace(); 169  }finally{ 170  BaseDao.closeResource(connection, null, null); 171  } 172         return flag; 173  } 174  @Override 175  public boolean updatePwd(int id, String pwd) { 176         // TODO Auto-generated method stub 177         boolean flag = false; 178         Connection connection = null; 179  try{ 180             connection = BaseDao.getConnection(); 181             if(userDao.updatePwd(connection,id,pwd) > 0) 182                 flag = true; 183  }catch (Exception e) { 184             // TODO: handle exception 185  e.printStackTrace(); 186  }finally{ 187  BaseDao.closeResource(connection, null, null); 188  } 189         return flag; 190  } 191  @Override 192  public int getUserCount(String queryUserName, int queryUserRole) { 193         // TODO Auto-generated method stub 194         Connection connection = null; 195         int count = 0; 196         System.out.println("queryUserName ---- > " + queryUserName); 197         System.out.println("queryUserRole ---- > " + queryUserRole); 198  try { 199             connection = BaseDao.getConnection(); 200             count = userDao.getUserCount(connection, queryUserName,queryUserRole); 201  } catch (Exception e) { 202             // TODO Auto-generated catch block 203  e.printStackTrace(); 204  }finally{ 205  BaseDao.closeResource(connection, null, null); 206  } 207         return count; 208  } 209     
210 }

ConstantManager.java

 1 package cn.smbms.tools;  2 
 3 import java.io.IOException;  4 import java.io.InputStream;  5 import java.util.Properties;  6 
 7 //讀取配置文件的工具類-單例模式  8 public class ConfigManager {  9     //創建私有的靜態變量,餓漢模式，類加載的時候，就完成初始化操作 10     private static ConfigManager configManager=new ConfigManager(); 11  private static Properties properties; 12     //私有構造器-讀取數據庫配置文件 13  private ConfigManager(){ 14         String configFile = "database.properties"; 15         properties = new Properties(); 16         InputStream is = 
17  ConfigManager.class.getClassLoader().getResourceAsStream(configFile); 18  try { 19             properties.load(is); 20  is.close(); 21  } catch (IOException e) { 22             // TODO Auto-generated catch block 23  e.printStackTrace(); 24  } 25  } 26     //全局訪問點 27     /*public static synchronized ConfigManager getInstance(){ 28         if(configManager == null){ 29             configManager = new ConfigManager(); 30  } 31         return configManager; 32  } 33     */
34  public static ConfigManager getInstance(){ 35             return configManager; 36  } 37         
38  public String getValue(String key){ 39         return properties.getProperty(key); 40  } 41 }

Constants.java

1 package cn.smbms.tools; 2 
3 public class Constants { 4     public final static String USER_SESSION = "userSession"; 5     public final static String SYS_MESSAGE = "message"; 6     public final static int pageSize = 5; 7 }

運行結果：

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