javaweb实战之商城项目开发（一）

一.项目功能结构

1.功能

2.实体

3.对应sql语句

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

package com.model;

import java.util.list;

/**
 * created by nl101 on 2016/2/22.
 */
public class user {
 private int id;//id
 private 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

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_id
 private 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.

完整建立后如下

本文是项目实战的第一篇，之后还有更新，希望大家不要错过。