JSP+Servlet+Ajax实现用户增删改查的例子

一、数据库设计

用户表User

已有的测试数据

 

二、Java代码编写

Java EE的架构一般分为以下五层：

①.Domain

②.DAO

③.Service

④.Controller

⑤.View

这里的项目结构如下：

 

使用的环境为：JDK1.8+Servlet3.0+Tomcat8.0

前端统一使用Ajax方式和JSON数据格式向后端发送请求及数据，后端统一返回JSON数据格式的信息

 

1.Domain层

 1 package domain;
 2 
 3 import java.util.Date;
 4 
 5 public class User {
 6     
 7     public User() {
 8         
 9     }
10     
11     private Integer id;
12     
13     private String account;
14     
15     private String password;
16     
17     private String name;
18     
19     private String info;
20     
21     private Date createTime;
22     
23     private Date modifiedTime;
24 
25     public Integer getId() {
26         return id;
27     }
28 
29     public void setId(Integer id) {
30         this.id = id;
31     }
32 
33     public String getAccount() {
34         return account;
35     }
36 
37     public void setAccount(String account) {
38         this.account = account;
39     }
40 
41     public String getPassword() {
42         return password;
43     }
44 
45     public void setPassword(String password) {
46         this.password = password;
47     }
48 
49     public String getName() {
50         return name;
51     }
52 
53     public void setName(String name) {
54         this.name = name;
55     }
56 
57     public String getInfo() {
58         return info;
59     }
60 
61     public void setInfo(String info) {
62         this.info = info;
63     }
64 
65     public Date getCreateTime() {
66         return createTime;
67     }
68 
69     public void setCreateTime(Date createTime) {
70         this.createTime = createTime;
71     }
72 
73     public Date getModifiedTime() {
74         return modifiedTime;
75     }
76 
77     public void setModifiedTime(Date modifiedTime) {
78         this.modifiedTime = modifiedTime;
79     }
80 
81     @Override
82     public String toString() {
83         return "User [
84                 + info + ", createTime=" + createTime + ", modifiedTime=" + modifiedTime + "]";
85     }
86     
87 }

User.java