MyBatis-Plus 基础+进阶+实战 之 快速入门

  <properties>
        <java.version>1.8</java.version>
        <mysql.version>8.0.19</mysql.version>
        <druid.version>1.2.4</druid.version>
        <mybatis-plus.version>3.4.3</mybatis-plus.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>${mysql.version}</version>
        </dependency>

        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>${druid.version}</version>
        </dependency>

        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>${mybatis-plus.version}</version>
        </dependency>
        <!--不是必要的，为了方便演示-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>cn.hutool</groupId>
            <artifactId>hutool-all</artifactId>
            <version>5.7.21</version>
        </dependency>
    </dependencies>

spring:
  datasource:
    druid:
      driver-class-name: com.mysql.cj.jdbc.Driver
      url: jdbc:mysql://192.168.64.2:3306/mybatis-plus
      username: root
      password: root
mybatis-plus:
  configuration:
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl

CREATE TABLE `mall_order` (
  `id` bigint NOT NULL AUTO_INCREMENT,
  `name` varchar(255) DEFAULT NULL COMMENT '姓名',
  `mobile` varchar(100) DEFAULT NULL COMMENT '手机号',
  `address` varchar(255) DEFAULT NULL COMMENT '地址',
  `order_status` int DEFAULT NULL COMMENT '订单状态',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci;

package com.lglbc.mybatispluslearning;

import cn.hutool.json.JSONUtil;
import com.lglbc.mybatispluslearning.entity.MallOrder;
import com.lglbc.mybatispluslearning.mapper.MallOrderMapper;
import com.lglbc.mybatispluslearning.service.MallOrderService;
import lombok.extern.slf4j.Slf4j;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;

import java.util.List;

@SpringBootTest
@Slf4j
class MybatisPlusLearningApplicationTests {
    @Autowired
    private MallOrderMapper mallOrderMapper;

    @Test
    void contextLoads() {
    }


    @Test
    public void testQuery(){
        List<MallOrder> list = mallOrderMapper.selectList(null);
        log.info("查询数据:"+ JSONUtil.toJsonStr(list));
    }
    @Test
    public void testInsert(){
        MallOrder mallOrder = MallOrder.builder()
                .address("中国安徽")
                .mobile("110")
                .name("皖")
                .orderStatus(1)
                .build();
        mallOrderMapper.insert(mallOrder);
    }

    @Test
    public void testDelete(){
        mallOrderMapper.deleteById(1);
    }

    @Test
    public void testUpdate(){
        MallOrder mallOrder = MallOrder.builder()
                .address("中国安徽 新")
                .mobile("110  新")
                .name("皖 新")
                .orderStatus(2)
                .id(2L)
                .build();
        mallOrderMapper.updateById(mallOrder);
    }


}

@TableName("mall_order")
public class MallOrder

    @TableId(type = IdType.AUTO)
    /**
    * id
    */
    private Long id;

    /**
    * 姓名
    */
    @TableField("name")
    private String name;

    /**
     * 删除
     */
    @TableLogic(value = "0",delval = "1")
    private int delFlag