一.项目功能结构
1.功能
2.实体
3.对应sql语句
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
|
CREATE DATABASE shop;use shop;create table user(id int(11) primary key auto_increment,username varchar(100),password varchar(100),nickname varchar(100),type int(5));INSERT INTO user VALUES (null,'admin','7946521','管理员',1);CREATE TABLE address(id INT(10) PRIMARY KEY AUTO_INCREMENT,name VARCHAR(255),phone VARCHAR(100),postcode VARCHAR(100),user_id INT(10),CONSTRAINT FOREIGN KEY (user_id) REFERENCES user(id));INSERT INTO address VALUES (NULL ,'安徽阜阳','1234567890','236000','1');SELECT t1.*,t2.* FROM address t1 LEFT JOIN user t2 ON t1.user_id = t2.id where t1.user_id =1 ;create table orders(id int(11) primary key auto_increment,buy_date datetime,pay_date datetime,confirm_date datetime,status int(5),user_id int(11),address_id int(11),CONSTRAINT FOREIGN KEY(user_id) REFERENCES user(id),CONSTRAINT FOREIGN KEY(address_id) REFERENCES address(id));create table category(id int(11) primary key auto_increment,name varchar(100));create table goods(id int(11) primary key auto_increment,name varchar(100),price double,intro text,img varchar(100),stock int(10),c_id int(10),CONSTRAINT FOREIGN KEY(c_id) REFERENCES category(id));create table goods_orders(id int(11) primary key auto_increment,goods_id int(10),orders_id int(10),CONSTRAINT FOREIGN KEY(goods_id) REFERENCES goods(id),CONSTRAINT FOREIGN KEY(orders_id) REFERENCES orders(id)); |
二.项目准备
1.实体类实现
分别建立dao,filter,model,util的包,并在model中实现实体类,这里以User.java为例.
注意对于数据库中外键,比如adress表中有外键user_id,那么在Adress.java中就可以直接给个User对象,在取adress表的时候就把user一并取出来.
User.java
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
package com.model;import java.util.List;/*** Created by nl101 on 2016/2/22.*/public class User {private int id;//idprivate String username;private String password;private String nickname;//昵称private int type;//1表示管理员,2表示注册用户private List<Address> addresses;public List<Address> getAddresses() {return addresses;}public void setAddresses(List<Address> addresses) {this.addresses = addresses;}public int getId() {return id;}public void setId(int id) {this.id = id;}public String getUsername() {return username;}public void setUsername(String username) {this.username = username;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}public String getNickname() {return nickname;}public void setNickname(String nickname) {this.nickname = nickname;}public int getType() {return type;}public void setType(int type) {this.type = type;}} |
Adress.java
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
package com.model;/*** Created by nl101 on 2016/2/22.*/public class Address {private int id;private String name;private String phone;private String postcode;//直接给user对象,来代替user_idprivate User user;public int getId() {return id;}public void setId(int id) {this.id = id;}public String getName() {return name;}public void setName(String name) {this.name = name;}public String getPhone() {return phone;}public void setPhone(String phone) {this.phone = phone;}public String getPostcode() {return postcode;}public void setPostcode(String postcode) {this.postcode = postcode;}public User getUser() {return user;}public void setUser(User user) {this.user = user;}} |
2.分页框架准备
分页主要是写pager.java和SystemContext.java以及SystemFilter.java三个类.可以参开前面的博文,jsp通用分页框架
完整建立后如下
关于JAVAWEB实现简单的商城项目就给大家介绍到这里，希望对大家有所帮助！
