动态网站项目（Dynamic Web Project）CRUD(增删改查)功能的实现(mvc(五层架构)+jdbc+servlet+tomcat7.0+jdk1.8)，前端使用JSP+JSTL+EL组合

代码分享链接

https://pan.baidu.com/s/1UM0grvpttHW9idisiqa6rA 提取码：hx7c

图示

项目结构

1.SelectAllUser.jsp

 1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 4 <html>
 5 <head>
 6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 7 <title>Insert title here</title>
 8 </head>
 9 <body>
10     <a href="SelectAllUserServlet">查询所有用户</a>
11 </body>
12 </html>

2.AddUser.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<a href="Add.jsp">增加用户</a>
<table border="1px">
<tr>
<td>用户ID</td>
<td>用户姓名</td>
<td>用户密码</td>
<td>用户昵称</td>
<td>用户性别</td>
<td>用户年龄</td>
<td>用户头像</td>
<td>操作</td>
</tr>
<c:forEach var="xyz" items="${requestScope.user }">
<tr>
<td>${xyz.userid }</td>
<td>${xyz.username }</td>
<td>${xyz.password }</td>
<td>${xyz.nikename }</td>
<td>${xyz.sex }</td>
<td>${xyz.age }</td>
<td><img src="${xyz.image }" alt="图片加载失败" height="50px" weight="50px"/></td>
<td>
<a href="UpdateSelectUserByIdServlet?userid=${xyz.userid }">修改</a>
<a href="DeleteUserServlet?userid=${xyz.userid }">删除</a>
</td>
</tr>
</c:forEach>
</table>


一共${num }页     
<a href=""#>首页</a>
<a href=""#>上一页</a>
<a href=""#>下一页</a>
<a href=""#>尾页</a>

</body>
</html>

3.Add.jsp

 1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 4 <html>
 5 <head>
 6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 7 <title>Insert title here</title>
 8 </head>
 9 <body>
10     <form action="AddUserServle" method="post">
11         用户名<input type="text" name="username"><br>
12         密码<input type="text" name="password"><br>
13         昵称<input type="text" name="nikename"><br>
14         性别<input type="text" name="sex"><br>
15         年龄<input type="text" name="age"><br>
16         头像<input type="file" name="image"><br>
17         <input type="submit" value="提交">
18     </form>
19 </body>
20 </html>

4.UpdateUser.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 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 5 <html>
 6 <head>
 7 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 8 <title>Insert title here</title>
 9 </head>
10 <body>
11     
12     
13     <form action="UpdateUserServlet" method="post" >
14         用户id:${user.userid }
15         <input type="hidden" name="userid" value="${user.userid }"><br>
16         用户名<input type="text" name="username" value="${user.username }"><br>
17         密码<input type="text" name="password" value="${user.password }"><br>
18         昵称<input type="text" name="nikename" value="${user.nikename }"><br>
19         性别<input type="text" name="sex" value="${user.sex }"><br>
20         年龄<input type="text" name="age" value="${user.age }"><br>
21         头像<input type="file" name="image" value="${user.image }"><br>
22         <input type="submit" value="提交">
23     </form>
24 
25 </body>
26 </html>

5.(com.icss.vo)User.java

  1 /**
  2   * <p>Title: User.java</p>
  3 　 * <p>Description: </p>
  4 　 * <p>Copyright: Copyright (c) 2020</p>
  5 　 * <p>Company: </p>
  6 　 * @author liuxin
  7 　 * @date 2020年3月27日
  8 　 * @version 1.0
  9  */
 10 package com.icss.vo;
 11 
 12 /**
 13  * <p>Title: User</p>
 14 　 * <p>Description: </p>
 15 　 * @author liuxin
 16 　 * @date 2020年3月27日
 17  */
 18 public class User {
 19     //数据封装
 20     private int userid;
 21     private String username;
 22     private String password;
 23     private String nikename;
 24     private String sex;
 25     private int age;
 26     private String image;
 27     /**
 28      * @return the userid
 29      */
 30     public int getUserid() {
 31         return userid;
 32     }
 33     /**
 34      * @param userid the userid to set
 35      */
 36     public void setUserid(int userid) {
 37         this.userid = userid;
 38     }
 39     /**
 40      * @return the username
 41      */
 42     public String getUsername() {
 43         return username;
 44     }
 45     /**
 46      * @param username the username to set
 47      */
 48     public void setUsername(String username) {
 49         this.username = username;
 50     }
 51     /**
 52      * @return the password
 53      */
 54     public String getPassword() {
 55         return password;
 56     }
 57     /**
 58      * @param password the password to set
 59      */
 60     public void setPassword(String password) {
 61         this.password = password;
 62     }
 63     /**
 64      * @return the nikename
 65      */
 66     public String getNikename() {
 67         return nikename;
 68     }
 69     /**
 70      * @param nikename the nikename to set
 71      */
 72     public void setNikename(String nikename) {
 73         this.nikename = nikename;
 74     }
 75     /**
 76      * @return the sex
 77      */
 78     public String getSex() {
 79         return sex;
 80     }
 81     /**
 82      * @param sex the sex to set
 83      */
 84     public void setSex(String sex) {
 85         this.sex = sex;
 86     }
 87     /**
 88      * @return the age
 89      */
 90     public int getAge() {
 91         return age;
 92     }
 93     /**
 94      * @param age the age to set
 95      */
 96     public void setAge(int age) {
 97         this.age = age;
 98     }
 99     /**
100      * @return the image
101      */
102     public String getImage() {
103         return image;
104     }
105     /**
106      * @param image the image to set
107      */
108     public void setImage(String image) {
109         this.image = image;
110     }
111 
112     
113 
114 }

6.(com.icss.util)DBUtil.java

 1 package com.icss.util;
 2 
 3 import java.sql.Connection;
 4 import java.sql.DriverManager;
 5 import java.sql.SQLException;
 6 
 7 public class DBUtil {
 8     public static Connection connection;
 9     public static Connection getConnection() throws ClassNotFoundException, SQLException{
10         Class.forName("oracle.jdbc.driver.OracleDriver");
11         Connection connection = DriverManager.getConnection
12                 ("jdbc:oracle:thin:@localhost:1521:XE","数据库名","数据库密码");
13         return connection;
14     }
15 
16 }

7.(com.icss.dao)UserDao.java

  1 /**
  2   * <p>Title: UserDao.java</p>
  3 　 * <p>Description: </p>
  4 　 * <p>Copyright: Copyright (c) 2020</p>
  5 　 * <p>Company: </p>
  6 　 * @author liuxin
  7 　 * @date 2020年3月27日
  8 　 * @version 1.0
  9  */
 10 package com.icss.dao;
 11 
 12 import java.sql.PreparedStatement;
 13 import java.sql.ResultSet;
 14 import java.sql.SQLException;
 15 import java.util.ArrayList;
 16 
 17 import org.apache.tomcat.dbcp.dbcp.DbcpException;
 18 
 19 import com.icss.util.DBUtil;
 20 import com.icss.vo.User;
 21 
 22 import javafx.css.PseudoClass;
 23 
 24 /**
 25  * <p>Title: UserDao</p>
 26 　 * <p>Description: </p>
 27 　 * @author liuxin
 28 　 * @date 2020年3月27日
 29  */
 30 public class UserDao {
 31     //查询所有用户
 32     public ArrayList<User> selectAllUserDao() throws ClassNotFoundException, SQLException{
 33         PreparedStatement ps = DBUtil.getConnection().prepareStatement
 34                 ("select * from user_0327");
 35         ResultSet rs = ps.executeQuery();
 36         ArrayList<User> al = new ArrayList<User>();
 37         while(rs.next()){
 38             User user = new User();
 39             user.setUserid(rs.getInt(1));
 40             user.setUsername(rs.getString(2));
 41             user.setPassword(rs.getString(3));
 42             user.setNikename(rs.getString(4));
 43             user.setSex(rs.getString(5));
 44             user.setAge(rs.getInt(6));
 45             user.setImage(rs.getString(7));
 46             al.add(user);
 47         }
 48         ps.close();
 49         rs.close();
 50         DBUtil.getConnection().close();
 51         return al;
 52     }
 53     //增加用户
 54     public void addUserDao(User user) throws ClassNotFoundException, SQLException{
 55         PreparedStatement ps = DBUtil.getConnection().prepareStatement
 56                 ("insert into user_0327 values(user0327_seq.nextval,?,?,?,?,?,?)");
 57         ps.setString(1, user.getUsername());
 58         ps.setString(2, user.getPassword());
 59         ps.setString(3, user.getNikename());
 60         ps.setString(4, user.getSex());
 61         ps.setInt(5, user.getAge());
 62         //这里先将头像照片定死，没有使用上传图片
 63         ps.setString(6, "image/"+user.getImage());
 64         ps.executeUpdate();
 65         ps.close();
 66         DBUtil.getConnection().close();
 67     }
 68 //删除用户
 69     public void deleteUserDao(int id) throws ClassNotFoundException, SQLException{
 70         PreparedStatement ps = DBUtil.getConnection().prepareStatement
 71                 ("delete from user_0327 where userid=?");
 72         ps.setInt(1, id);
 73         ps.executeQuery();
 74         ps.close();
 75         DBUtil.getConnection().close();
 76     }
 77 //修改之查询
 78     public User updateSelectUserByIdDao(int id) throws ClassNotFoundException, SQLException{
 79         PreparedStatement ps = DBUtil.getConnection().prepareStatement
 80                 ("select * from user_0327 where userid=?");
 81         ps.setInt(1, id);
 82         ResultSet rs = ps.executeQuery();
 83         User user = new User();
 84         while(rs.next()){
 85             user.setUserid(rs.getInt(1));
 86             user.setUsername(rs.getString(2));
 87             user.setPassword(rs.getString(3));
 88             user.setNikename(rs.getString(4));
 89             user.setSex(rs.getString(5));
 90             user.setAge(rs.getInt(6));
 91             user.setImage(rs.getString(7));
 92         }
 93         ps.close();
 94         rs.close();
 95         DBUtil.getConnection().close();
 96         return user;
 97     }
 98 //修改之修改
 99     public void updateUserByIdDao(User user) throws ClassNotFoundException, SQLException{
100         PreparedStatement ps = DBUtil.getConnection().prepareStatement
101                 ("update user_0327 set username=?,password=?,nikename=?,sex=?,age=?,image=? where userid =?");
102         ps.setString(1, user.getUsername());
103         ps.setString(2, user.getPassword());
104         ps.setString(3, user.getNikename());
105         ps.setString(4, user.getSex());
106         ps.setInt(5, user.getAge());
107         ps.setString(6, "image"+user.getImage());
108         ps.setInt(7, user.getUserid());
109         ps.executeUpdate();
110         ps.close();
111         DBUtil.getConnection().close();
112     }
113 //获得分页数量
114     public int getTotalPageDao(int pagesize) throws ClassNotFoundException, SQLException{
115         PreparedStatement ps = DBUtil.getConnection().prepareStatement
116                 ("select count(userid) c from user_0327");
117         ResultSet rs = ps.executeQuery();
118         int total =0;
119         if(rs.next()){
120             int num = rs.getInt("c");
121             total = num%pagesize==0?num/pagesize:num/pagesize+1;
122         }
123         ps.close();
124         DBUtil.getConnection().close();
125         return total;
126     }
127 }

8.(com.icss.service)UserService.java

 1 /**
 2   * <p>Title: UserService.java</p>
 3 　 * <p>Description: </p>
 4 　 * <p>Copyright: Copyright (c) 2020</p>
 5 　 * <p>Company: </p>
 6 　 * @author liuxin
 7 　 * @date 2020年3月27日
 8 　 * @version 1.0
 9  */
10 package com.icss.service;
11 
12 import java.sql.SQLException;
13 import java.util.ArrayList;
14 
15 import com.icss.dao.UserDao;
16 import com.icss.vo.User;
17 
18 /**
19  * <p>Title: UserService</p>
20 　 * <p>Description: </p>
21 　 * @author liuxin
22 　 * @date 2020年3月27日
23  */
24 public class UserService {
25     public ArrayList<User> selectAllUserService() throws ClassNotFoundException, SQLException{
26         UserDao user = new UserDao();
27         return user.selectAllUserDao();
28     }
29     public void addUserService(User user) throws ClassNotFoundException, SQLException{
30         UserDao ud = new UserDao();
31         ud.addUserDao(user);
32     }
33     public void deleteUserService(int id) throws ClassNotFoundException, SQLException{
34         UserDao ud = new UserDao();
35         ud.deleteUserDao(id);
36     }
37     public User updateSelectUserByIdService(int id) throws ClassNotFoundException, SQLException{
38         UserDao ud = new UserDao();
39         return ud.updateSelectUserByIdDao(id);
40     }
41     public void updateUserByIdService(User user) throws ClassNotFoundException, SQLException{
42         UserDao ud = new UserDao();
43         ud.updateUserByIdDao(user);
44     }
45     public int getTotalPageService(int pagesize) throws ClassNotFoundException, SQLException{
46         UserDao ud = new UserDao();
47         return ud.getTotalPageDao(pagesize);
48     }
49 
50 }

9.(com.icss.controller)SelectAllUserServlet.java

 1 package com.icss.controller;
 2 
 3 import java.io.IOException;
 4 import java.sql.SQLException;
 5 import java.util.ArrayList;
 6 
 7 import javax.servlet.ServletException;
 8 import javax.servlet.annotation.WebServlet;
 9 import javax.servlet.http.HttpServlet;
10 import javax.servlet.http.HttpServletRequest;
11 import javax.servlet.http.HttpServletResponse;
12 
13 import com.icss.service.UserService;
14 import com.icss.vo.User;
15 
16 /**
17  * Servlet implementation class SelectAllUserServlet
18  */
19 @WebServlet("/SelectAllUserServlet")
20 public class SelectAllUserServlet extends HttpServlet {
21     private static final long serialVersionUID = 1L;
22        
23     /**
24      * @see HttpServlet#HttpServlet()
25      */
26     public SelectAllUserServlet() {
27         super();
28         // TODO Auto-generated constructor stub
29     }
30 
31     /**
32      * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
33      */
34     protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
35         doPost(request, response);
36     }
37 
38     /**
39      * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
40      */
41     protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
42         request.setCharacterEncoding("utf-8");
43         //接受请求
44         //处理请求
45         UserService us = new UserService();
46         try {
47             //************分页数**************
48             int pagesize = 3;
49             int num = us.getTotalPageService(pagesize);
50             System.out.println(num);
51             request.setAttribute("num", num);
52             //************分页数**************
53             ArrayList<User> user = us.selectAllUserService();
54             request.setAttribute("user", user);
55             request.getRequestDispatcher("AddUser.jsp").forward(request, response);
56         } catch (ClassNotFoundException e) {
57             // TODO Auto-generated catch block
58             e.printStackTrace();
59         } catch (SQLException e) {
60             // TODO Auto-generated catch block
61             e.printStackTrace();
62         }
63         
64     }
65 
66 }

10.(com.icss.controller)AddUserServlet.java

 1 package com.icss.controller;
 2 
 3 import java.io.IOException;
 4 import java.sql.SQLException;
 5 
 6 import javax.servlet.ServletException;
 7 import javax.servlet.annotation.WebServlet;
 8 import javax.servlet.http.HttpServlet;
 9 import javax.servlet.http.HttpServletRequest;
10 import javax.servlet.http.HttpServletResponse;
11 
12 import com.icss.service.UserService;
13 import com.icss.vo.User;
14 
15 /**
16  * Servlet implementation class AddUserServle
17  */
18 @WebServlet("/AddUserServle")
19 public class AddUserServle extends HttpServlet {
20     private static final long serialVersionUID = 1L;
21        
22     /**
23      * @see HttpServlet#HttpServlet()
24      */
25     public AddUserServle() {
26         super();
27         // TODO Auto-generated constructor stub
28     }
29 
30     /**
31      * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
32      */
33     protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
34         doPost(request, response);
35     }
36 
37     /**
38      * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
39      */
40     protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
41         request.setCharacterEncoding("utf-8");
42         //接受请求
43         User user = new User();
44         //String user2 = request.getParameter("username");
45         user.setUsername(request.getParameter("username"));
46         ///System.out.println(user2);
47         user.setPassword(request.getParameter("password"));
48         user.setNikename(request.getParameter("nikename"));
49         user.setSex(request.getParameter("sex"));
50         user.setAge(Integer.parseInt(request.getParameter("age")));
51         user.setImage(request.getParameter("image"));
52         //处理请求
53         UserService us = new UserService();
54         try {
55             
56             us.addUserService(user);
57             request.getRequestDispatcher("SelectAllUserServlet").forward(request, response);
58         } catch (ClassNotFoundException e) {
59             // TODO Auto-generated catch block
60             e.printStackTrace();
61         } catch (SQLException e) {
62             // TODO Auto-generated catch block
63             e.printStackTrace();
64         }
65     }
66 
67 }

11.(com.icss.controller)UpdateSelectUserByIdServlet.java

 1 package com.icss.controller;
 2 
 3 import java.io.IOException;
 4 import java.sql.SQLException;
 5 
 6 import javax.servlet.ServletException;
 7 import javax.servlet.annotation.WebServlet;
 8 import javax.servlet.http.HttpServlet;
 9 import javax.servlet.http.HttpServletRequest;
10 import javax.servlet.http.HttpServletResponse;
11 
12 import com.icss.service.UserService;
13 import com.icss.vo.User;
14 
15 /**
16  * Servlet implementation class UpdateSelectUserByIdServlet
17  */
18 @WebServlet("/UpdateSelectUserByIdServlet")
19 public class UpdateSelectUserByIdServlet extends HttpServlet {
20     private static final long serialVersionUID = 1L;
21        
22     /**
23      * @see HttpServlet#HttpServlet()
24      */
25     public UpdateSelectUserByIdServlet() {
26         super();
27         // TODO Auto-generated constructor stub
28     }
29 
30     /**
31      * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
32      */
33     protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
34         doPost(request, response);
35     }
36 
37     /**
38      * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
39      */
40     protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
41         request.setCharacterEncoding("utf-8");
42         //接受数据
43         int id = Integer.parseInt(request.getParameter("userid"));
44         //System.out.println(id);
45         //处理数据
46         UserService us = new UserService();
47         try {
48             User user = us.updateSelectUserByIdService(id);
49             request.setAttribute("user", user);
50             request.getRequestDispatcher("UpdateUser.jsp").forward(request, response);
51         } catch (ClassNotFoundException e) {
52             // TODO Auto-generated catch block
53             e.printStackTrace();
54         } catch (SQLException e) {
55             // TODO Auto-generated catch block
56             e.printStackTrace();
57         }
58     }
59 
60 }

12.(com.icss.controller)UpdateUserServlet.java

 1 package com.icss.controller;
 2 
 3 import java.io.IOException;
 4 import java.sql.SQLException;
 5 
 6 import javax.servlet.ServletException;
 7 import javax.servlet.annotation.WebServlet;
 8 import javax.servlet.http.HttpServlet;
 9 import javax.servlet.http.HttpServletRequest;
10 import javax.servlet.http.HttpServletResponse;
11 
12 import com.icss.service.UserService;
13 import com.icss.vo.User;
14 
15 /**
16  * Servlet implementation class UpdateUserServlet
17  */
18 @WebServlet("/UpdateUserServlet")
19 public class UpdateUserServlet extends HttpServlet {
20     private static final long serialVersionUID = 1L;
21        
22     /**
23      * @see HttpServlet#HttpServlet()
24      */
25     public UpdateUserServlet() {
26         super();
27         // TODO Auto-generated constructor stub
28     }
29 
30     /**
31      * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
32      */
33     protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
34         doPost(request, response);
35     }
36 
37     /**
38      * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
39      */
40     protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
41         request.setCharacterEncoding("utf-8");
42         //接受数据
43         User user = new User();
44         user.setUserid(Integer.parseInt(request.getParameter("userid")));
45         user.setUsername(request.getParameter("username"));
46         user.setPassword(request.getParameter("password"));
47         user.setNikename(request.getParameter("nikename"));
48         user.setSex(request.getParameter("sex"));
49         user.setAge(Integer.parseInt(request.getParameter("age")));
50         user.setImage(request.getParameter("image"));
51         //处理请求
52         UserService us = new UserService();
53         try {
54             us.updateUserByIdService(user);
55             request.getRequestDispatcher("SelectAllUserServlet").forward(request, response);
56         } catch (ClassNotFoundException e) {
57             // TODO Auto-generated catch block
58             e.printStackTrace();
59         } catch (SQLException e) {
60             // TODO Auto-generated catch block
61             e.printStackTrace();
62         }
63     }
64 
65 }

13.(com.icss.controller)DeleteUserServlet.java

 1 package com.icss.controller;
 2 
 3 import java.io.IOException;
 4 import java.sql.SQLException;
 5 
 6 import javax.servlet.ServletException;
 7 import javax.servlet.annotation.WebServlet;
 8 import javax.servlet.http.HttpServlet;
 9 import javax.servlet.http.HttpServletRequest;
10 import javax.servlet.http.HttpServletResponse;
11 
12 import com.icss.service.UserService;
13 
14 /**
15  * Servlet implementation class DeleteUserServlet
16  */
17 @WebServlet("/DeleteUserServlet")
18 public class DeleteUserServlet extends HttpServlet {
19     private static final long serialVersionUID = 1L;
20        
21     /**
22      * @see HttpServlet#HttpServlet()
23      */
24     public DeleteUserServlet() {
25         super();
26         // TODO Auto-generated constructor stub
27     }
28 
29     /**
30      * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
31      */
32     protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
33         doPost(request, response);
34     }
35 
36     /**
37      * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
38      */
39     protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
40         request.setCharacterEncoding("utf-8");
41         //接受请求
42         int id = Integer.parseInt(request.getParameter("userid"));
43         //System.out.println(id);
44         //处理请求
45         UserService us = new UserService();
46         try {
47             us.deleteUserService(id);
48             request.getRequestDispatcher("SelectAllUserServlet").forward(request, response);
49         } catch (ClassNotFoundException | SQLException e) {
50             // TODO Auto-generated catch block
51             e.printStackTrace();
52         }
53     }
54 
55 }

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原文地址：https://www.cnblogs.com/wushenga/p/12584800.html