SpringMVC用例篇之用户登录系统详细开发流程

2019独角兽企业重金招聘Python工程师标准>>>

一.用户登录系统环境配置：

1.1:开发环境：

Windows7(x86_64);Eclipse Java EE IDE for Web Developers.Version: Oxygen.1a Release (4.7.1a); java version "1.8.0_73"

1.2:开发框架：

spring-framework-5.0.3.RELEASE   DButils

1.3：所需jar包截图：

二.数据库的设计：

三.开发流程：

 1.1.配置web.xml文件

1 
 2   
 3           DispatchcerServletSpringMVC
 4           org.springframework.web.servlet.DispatcherServlet
 5           
 6           
 7                   contextConfigLocation
 8                   classpath:SpringMVC.xml
 9           
10   
11   
12   
13           DispatchcerServletSpringMVC
14           *.action
15   

1.2.配置SpringMVC.xml文件

1 
 2 
 9     
10      
11     
12     
13     
14     
15     
16     
17          
18         
19         
20         
21     
22 

1.3.C3P0数据库连接池的配置：

1 
 2 
 3    
 4       com.mysql.jdbc.Driver
 5       jdbc:mysql://localhost:3306/springmvc
 6       root
 7       root
 8     2
 9     5
10   
11 

1.4.视图层目录结构：

1.5.各层关键代码展示：

　　<1>.view层：

　　　@1.login.jsp页面：

1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 
 4 
 5 
 6 
 7 
 8 
17 
18 
19 
20 
25     

26         

27             ${error_msg }
28             
AdminLogin
29         
30         

31             
32                 

33                     
请登录开启你的会话旅程
34                     

35                             

36                                   

37                                     
38                                   
39                                   

40                                     
41                                   
42                                   

43                                       

44                                           记住登录信息
45                                       
46                                       
登录
47                                   
48                             
49                     
50                     
注册一个新账户
51                 
52             
53         
54     
55 
56 
62 
63 

　　　@2.register.jsp页面：

1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 
 4 
 5 
 6 
 7 
 8 
17 
18 
19 
20         

21             

22             ${msg }
23             
RegisterAdmin
24         
25         

26             
27                 

28                     
注册一个新账户
29                     

30                             

31                                  

32                                     
33                                   
34                                   

35                                     
36                                   
37                                   

38                                     
39                                   
40                                    

41                                     
42                                   
43                                    

44                                     
45                                   
46                                   

47                                       

48                                           同意注册条约
49                                       
50                                       
注册
51                                   
52                             
53                     
54                     
登录账号
55                 
56             
57         
58         
59 
60 

　　　@3.adminWelcome.jsp页面：

1 <%@ page language="java" contentType="text/html; charset=UTF-8"
  2     pageEncoding="UTF-8"%>
  3     <%@ taglib prefix="c"  uri="http://java.sun.com/jsp/jstl/core"%>
  4 
  5 
  6 
  7 
  8 
  9 
 18 
 36 
 37 
 38 
 39 
 40 
 46             

 47                 
 52                 

 53                     

 54                         ${username }：欢迎你！
 55                         注销
 56                     
 57                 
 58                 
 63                 

 64                     

 65                         
 66                             
 67                                 
 68                                 
 69                                 
 70                                 
 71                                 
 72                                 
 73                                 
 74                             
 75                             
 76                                 
 77                                 
 78                                 
 79                                 
 80                                 
 81                                 
 82                                 
 83                                 
 84                             
 85                         
账号
姓名
密码
邮箱
修改
销毁
相册
${adminInfo.account }
${adminInfo.name }
${adminInfo.passwd }
${adminInfo.email }
修改
销毁
查看
 86                     
 87                 
 88                 
 93                 
 94                 

 95                         

 96                             

 97                                 
 98                                  

 99                                   
100                                   
101                                   

102                                  
103                                   
104                                   

105                                    
106                                   
107                                    

108                                  
109                                   
110                                   

111                                       
修改
112                                   
113                             
114                     
115                 
116                 
117             
118 
119 　　

　　<2>.Handler代码展示：

　　　　@1.AdminOperationHandler

1 @Controller
 2 @RequestMapping("/admin")
 3 public class AdminOperationHandler {
 4     
 5     private AdminOperationService adminService;
 6     public  AdminOperationHandler() {
 7         this.adminService = new AdminOperationServiceImpl();
 8     }
 9     /*账户登录校验*/
10     @RequestMapping(path={"adminCheck.action"},method= {RequestMethod.POST})
11     public String adminCheck(Admin admin,HttpSession session,HttpServletRequest request ) {
12         try {
13             int temp = adminService.adminCheck(admin);
14             if( temp != -1) {
15                 session.setAttribute("username", admin.getName());
16                 session.setAttribute("aid", temp);
17                 return "forward:/admin/adminQuery.action";
18             }
19         } catch (SQLException e) {
20             e.printStackTrace();
21         }
22         request.setAttribute("error_msg", "用户名或者密码错误！");
23         return "forward:/login.jsp";
24     }
25     /*账户注册*/
26     @RequestMapping(path= {"adminAdd.action"},method= {RequestMethod.POST})
27     public String adminAdd(Admin admin,HttpServletRequest request) {
28         String msg = "";
29         try {
30             if(adminService.adminAdd(admin)) {
31                 msg = "用户添加成功！";
32             }else {
33                 msg = "用户添加失败！";
34             }
35         } catch (SQLException e) {
36             e.printStackTrace();
37         }
38         request.setAttribute("msg", msg);
39         return "forward:/register.jsp";
40     }
41     /*账户销毁*/
42     @RequestMapping("/adminDelete.action")
43     public String adminDelete(HttpServletRequest request,HttpSession session) {
44         try {
45             if (!adminService.adminDelete((Integer)session.getAttribute("aid"))) {
46                 request.setAttribute("error_msg", "账户销毁失败！");
47                 return "forward:/admin/adminQuery.action";
48             }
49         } catch (SQLException e) {
50             e.printStackTrace();
51         }
52         return "redirect:/login.jsp";
53     }
54     /*账户更新*/
55     @RequestMapping(path="adminAlter.action",method=RequestMethod.POST)
56     public String adminAlter(int id,Admin admin,HttpServletRequest request) {
57         try {
58             if (adminService.adminAlter(id, admin)) {
59                 request.setAttribute("error_msg", "信息更新成功！");
60             }else {
61                 request.setAttribute("error_msg", "信息更新失败！");
62             }
63         } catch (SQLException e) {
64             request.setAttribute("error_msg",e.getMessage());
65             e.printStackTrace();
66         }
67         return "forward:/admin/adminQuery.action";
68     }
69     /*账号查询*/
70     @RequestMapping("/adminQuery.action")
71     public String adminQuery(HttpServletRequest request,HttpSession session) {
72         Admin admin;
73         try {
74             admin = adminService.adminQuery((Integer)session.getAttribute("aid"));
75             request.setAttribute("adminInfo", admin);
76         } catch (SQLException e) {
77             e.printStackTrace();
78         }
79         return "adminWelcome";
80     }
81     /*账户注销*/
82     @RequestMapping("/adminLogout.action")
83     public String adminLogout(HttpServletRequest request,HttpSession session) {
84         session.invalidate();
85         request.setAttribute("off_msg", "您将退出了会话状态！");
86         return "forward:/login.jsp";
87     }
88 }

　　<3>.Service层代码展示：

 　　　　@1.AdminOperationService接口展示：

1 public interface AdminOperationService {
 2 
 3     /* 增加管理员 */
 4     public boolean adminAdd(Admin admin) throws SQLException;
 5 
 6     /* 删除管理员 */
 7     public boolean adminDelete(int aid) throws SQLException;
 8 
 9     /* 修改管理员 */
10     public boolean adminAlter(int aid, Admin admin) throws SQLException;
11 
12     /* 检查账号 */
13     public int adminCheck(Admin admin) throws SQLException;
14     
15     /*查询账号信息*/
16     public Admin adminQuery(int id) throws SQLException;
17 }

　　　　@2.实现类AdminOperationServiceImpl展示：

public class AdminOperationServiceImpl implements AdminOperationService {
    
    private AdminOperationDao adminDao;
    public AdminOperationServiceImpl() {
        this.adminDao = new AdminOperationDaoImpl();
    }
    
    @Override
    public boolean adminAdd(Admin admin) throws SQLException {
        boolean isTrue = false;
        if (0 != adminDao.adminAdd(admin)) {
            isTrue = true;
        }
        return isTrue;
    }

    @Override
    public boolean adminDelete(int aid) throws SQLException {
        boolean isTrue = false;
        if (adminDao.adminDelete(aid) != 0) {
            isTrue = true;
        }
        return isTrue;
    }

    @Override
    public boolean adminAlter(int aid, Admin admin) throws SQLException {
        boolean isTrue = false;
        if(adminDao.adminAlter(aid, admin) != 0) {
            isTrue = true;
        }
        return isTrue;
    }

    @Override
    public int adminCheck(Admin admin) throws SQLException {
        int user_id;
        user_id = adminDao.adminCheck(admin);
        return user_id;
    }

    @Override
    public Admin adminQuery(int id) throws SQLException {
        Admin admin;
        admin = adminDao.adminQuery(id);
        return admin;
    }

}

　　<4>.Dao层代码展示：

　　　　@1.AdminOperationDao接口展示：

public interface AdminOperationDao {
    
    /*增加管理员*/
    public int adminAdd(Admin admin) throws SQLException;
    
    /*删除管理员*/
    public int adminDelete(int aid) throws SQLException;
    
    /*修改管理员*/
    public int adminAlter(int aid,Admin admin) throws SQLException;
    
    /*检查账号*/
    public int adminCheck(Admin admin) throws SQLException;
    
    /*查询账号*/
    public Admin adminQuery(int id) throws SQLException;
}

　　　　@实现类AdminOperationDaoImpl展示：

1 public class AdminOperationDaoImpl implements AdminOperationDao {
 2     
 3     private QueryRunner qr;
 4     public AdminOperationDaoImpl() {
 5         this.qr = new QueryRunner(MyDataSource.getDataSource());
 6     }
 7     
 8     @Override
 9     public int adminAdd(Admin admin) throws SQLException {
10         String sql = "insert into admin(a_account,a_name,a_passwd,a_email) values(?,?,?,?) ";
11         return qr.update(sql, admin.getAccount(),admin.getName(),admin.getPasswd(),admin.getEmail());
12     }
13 
14     @Override
15     public int adminDelete(int aid) throws SQLException {
16         int flag = 0;
17         String sql = "delete from admin where a_id=?";
18         flag = qr.update(sql, aid);
19         return flag;
20     }
21 
22     @Override
23     public int adminAlter(int aid, Admin admin) throws SQLException {
24         int flag = 0;
25         String sql = "update admin set a_account=?,a_name=?,a_passwd=?,a_email=? where a_id=?";
26         flag = qr.update(sql, admin.getAccount(),admin.getName(),admin.getPasswd(),admin.getEmail(),admin.getId());
27         return flag;
28     }
29 
30     @Override
31     public int adminCheck(Admin admin) throws SQLException {
32         int user_id = -1; 
33         String sql = "select a_id id from admin where a_name=? and a_passwd=?";
34         Admin user = qr.query(sql, new BeanHandler(Admin.class),admin.getName(),admin.getPasswd());
35         if (null != user) {
36             user_id = user.getId();
37         }
38         return user_id;
39     }
40 
41     @Override
42     public Admin adminQuery(int id) throws SQLException {
43         Admin admin;
44         String sql = "select a_id id,a_account account,a_name name,a_passwd passwd,a_email email from admin where a_id=?";
45         admin = qr.query(sql, new BeanHandler(Admin.class), id);
46         return admin;
47     }
48 
49 }

　　<5>.Utils类展示：

　　　　@数据库连接池提供数据源类MyDataSource展示：

1 public class MyDataSource {
 2     private static DataSource ds = new ComboPooledDataSource("hello");
 3     private MyDataSource() {
 4     }
 5     public static DataSource getDataSource() {
 6         return ds;
 7     }
 8     public static Connection getConnection() {
 9         Connection con = null;
10         try {
11             con = ds.getConnection();
12         } catch (SQLException e) {
13             e.printStackTrace();
14         }
15         return con;
16     }
17 }

四.用户登录系统展示：

转载于:https://my.oschina.net/architectliuyuanyuan/blog/1621823