SpringBoot+MyBatis+Spring 技术整合实现商品模块的CRUD操作

1\. MySQL(5.7)
2\. JDK (1.8)
3\. Maven (3.6.3)
4\. STS(4.7.1)

mysql –uroot –proot

set names utf8;

source d:/goods.sql

drop database if exists dbgoods;
create database dbgoods default character set utf8;
use dbgoods;
create table tb_goods(
     id bigint primary key auto_increment,
     name varchar(100) not null,
     remark text,
     createdTime datetime not null
)engine=InnoDB;
insert into tb_goods values (null,'java','very good',now());
insert into tb_goods values (null,'mysql','RDBMS',now());
insert into tb_goods values (null,'Oracle','RDBMS',now());
insert into tb_goods values (null,'java','very good',now());
insert into tb_goods values (null,'mysql','RDBMS',now());
insert into tb_goods values (null,'Oracle','RDBMS',now());
insert into tb_goods values (null,'java','very good',now());

#server
server.port=80
#server.servlet.context-path=/
#spring datasource
spring.datasource.url=jdbc:mysql:///dbgoods?serverTimezone=GMT%2B8&characterEncoding=utf8
spring.datasource.username=root
spring.datasource.password=root

#spring mybatis
mybatis.mapper-locations=classpath:/mapper/*/*.xml

#spring logging
logging.level.com.cy=debug

#spring thymeleaf
spring.thymeleaf.prefix=classpath:/templates/pages/
spring.thymeleaf.suffix=.html
spring.thymeleaf.cache=false

package com.cy.pj.goods.pojo;
import java.util.Date;
public class Goods {
    private Long id;//id bigint primary key auto_increment
    private String name;//name varchar(100) not null
    private String remark;//remark text
    private Date createdTime;//createdTime datetime
    public Long getId() {
        return id;
    }
    public void setId(Long id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getRemark() {
        return remark;
    }
    public void setRemark(String remark) {
        this.remark = remark;
    }
    public Date getCreatedTime() {
        return createdTime;
    }
    public void setCreatedTime(Date createdTime) {
        this.createdTime = createdTime;
    }
    @Override
    public String toString() {
        return "Goods [id=" + id + ", name=" + name + ",   
        remark=" + remark + ", createdTime=" + createdTime + "]";
    }
}

package com.cy.pj.goods.dao;
import java.util.List;
import org.apache.ibatis.annotations.Select;
import com.cy.pj.goods.pojo.Goods;

@Mapper
public interface GoodsDao {
      @Select("select * from tb_goods")
      List<Goods> findGoods();
}

package com.cy.pj.goods.service;
import java.util.List;
import com.cy.pj.goods.pojo.Goods;
public interface GoodsService {
      List<Goods> findGoods();
}

package com.cy.pj.goods.service;
import java.util.List;
import com.cy.pj.goods.pojo.Goods;
@Service
public class GoodsServiceImpl implements GoodsService {
     @Autowired
     private GoodsDao goodsDao;
     @Override
     public List<Goods> findGoods(){
         return goodsDao.findGoods();
     }
}

package com.cy.pj.goods.controller;
import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import com.cy.pj.goods.pojo.Goods;
import com.cy.pj.goods.service.GoodsService;
@Controller //@Service,@Component
@RequestMapping("/goods/")
public class GoodsController {
    //has a+di
    @Autowired
    private GoodsService goodsService;
    @RequestMapping("doGoodsUI")
    public String doGoodsUI(Model model) {
         //调用业务层方法获取商品信息
         List<Goods> list= goodsService.findGoods();
         //将数据存储到请求作用域
         model.addAttribute("goods", list);
         return "goods";//viewname
    }

}

<table width="50%">
        <thead>
           <th>id</th>
           <th>name</th>
           <th>remark</th>
           <th>createdTime</th>
           <th>operation</th>
        </thead>
        <tbody>
           <tr th:each="g:${list}">
             <td th:text="${g.id}">1</td>
             <td th:text="${g.name}">MySQL</td>
             <td th:text="${g.remark}">DBMS</td>
             <td th:text="${#dates.format(g.createdTime, 'yyyy/MM/dd HH:mm')}">2020/07/03</td>
             <td><a>delete</a></td>
           </tr>
        </tbody>
  </table>

@Delete("delete from tb\_goods where id=#{id}")

 int deleteById(Integer id);

int deleteById(Integer id);

@Override
    public int deleteById(Integer id) {
        long t1=System.currentTimeMillis();
        int rows=goodsDao.deleteById(id);
        long t2=System.currentTimeMillis();
        System.out.println("execute time:"+(t2-t1));
        return rows;
    }

@RequestMapping("doDeleteById/{id}")
    public String doDeleteById(@PathVariable Integer id){
        goodsService.deleteById(id);
        return "redirect:/goods/doGoodsUI";
    }

@Insert("insert into tb_goods(name,remark,createdTime) 
values (#{name},#{remark},now())")
int insertObject(Goods entity);

int saveGoods(Goods entity);

@Override
    public int saveGoods(Goods entity) {
        int rows=goodsDao.insertObject(entity);
        return rows;
    }

@RequestMapping("doSaveGoods")
public String doSaveGoods(Goods entity) {
        goodsService.saveGoods(entity);
        return "redirect:/goods/doGoodsUI";
}

@RequestMapping("doGoodsAddUI")
    public String doGoodsAddUI() {
        return "goods-add";
    }

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<style type="text/css">
   ul li {list-style-type: none;}
</style>
</head>
<body>
<h1>The Goods Add Page</h1>
<form th:action="@{/goods/doSaveGoods}" method="post">
   <ul>
      <li>name:
      <li><input type="text" name="name">
      <li>remark:
      <li><textarea rows="5" cols="50" name="remark"></textarea>
      <li><input type="submit" value="Save">
   </ul>
</form>
</body>
</html>

<a th:href="@{/goods/doGoodsAddUI}">添加商品</a>