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>
<!– 分页 –>
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 }