SpringBoot之集成MyBatis
- 2019 年 11 月 10 日
- 笔记
- 引入工程依赖包
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</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>5.1.47</version> </dependency> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>1.3.0</version> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid-spring-boot-starter</artifactId> <version>1.1.16</version> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>1.18.10</version> </dependency>- 编写DAO接口
package com.example.mybatis.repository; import com.example.mybatis.domain.SmsCoupon; import org.apache.ibatis.annotations.Param; /** * @author shanks on 2019-11-09 */ public interface SmsCouponDAO { SmsCoupon queryById(@Param("id") Integer id); }- 编写SQL配置文件（本人不太习惯注解，习惯将SQL写在配置文件中）
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="com.example.mybatis.repository.SmsCouponDAO"> <resultMap type="com.example.mybatis.domain.SmsCoupon" id="SmsCouponMap"> <result property="id" column="id" jdbcType="INTEGER"/> <result property="type" column="type" jdbcType="INTEGER"/> <result property="name" column="name" jdbcType="VARCHAR"/> <result property="platform" column="platform" jdbcType="INTEGER"/> <result property="count" column="count" jdbcType="INTEGER"/> <result property="amount" column="amount" jdbcType="NUMERIC"/> <result property="perLimit" column="per_limit" jdbcType="INTEGER"/> <result property="minPoint" column="min_point" jdbcType="NUMERIC"/> <result property="startTime" column="start_time" jdbcType="TIMESTAMP"/> <result property="endTime" column="end_time" jdbcType="TIMESTAMP"/> <result property="useType" column="use_type" jdbcType="INTEGER"/> <result property="note" column="note" jdbcType="VARCHAR"/> <result property="publishCount" column="publish_count" jdbcType="INTEGER"/> <result property="useCount" column="use_count" jdbcType="INTEGER"/> <result property="receiveCount" column="receive_count" jdbcType="INTEGER"/> <result property="enableTime" column="enable_time" jdbcType="TIMESTAMP"/> <result property="code" column="code" jdbcType="VARCHAR"/> <result property="memberLevel" column="member_level" jdbcType="INTEGER"/> </resultMap> <!--查询单个--> <select id="queryById" resultMap="SmsCouponMap"> select id, type, name, platform, count, amount, per_limit, min_point, start_time, end_time, use_type, note, publish_count, use_count, receive_count, enable_time, code, member_level from mall.sms_coupon where id = #{id} </select> </mapper>- 配置myBatis配置类,也可以放在启动类上
package com.example.mybatis.config; import org.mybatis.spring.annotation.MapperScan; import org.springframework.context.annotation.Configuration; /** * @author shanks on 2019-11-09 */ @Configuration @MapperScan("com.example.mybatis.repository") public class MyBatisConfig { } - 配置application.yml文件
spring: datasource: #数据源基本配置 url: jdbc:mysql://localhost:3306/mall?allowMultiQueries=true&characterEncoding=utf-8&useSSL=false type: com.alibaba.druid.pool.DruidDataSource driver-class-name: com.mysql.jdbc.Driver username: root password: 123456 druid: #连接池配置， 初始化大小，最小，最大 initial-size: 5 max-active: 10 #配置获取连接等待超时的时间 max-wait: 60000 #配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 time-between-eviction-runs-millis: 60000 #配置一个连接在池中最小生存的时间，单位是毫秒 min-evictable-idle-time-millis: 300000 validation-query: SELECT 1 test-while-idle: true test-on-borrow: false test-on-return: false mybatis: mapper-locations: classpath:mybatis/mapper/*.xml- 编写controller,调用MyBatis
package com.example.mybatis.web; import com.example.mybatis.domain.SmsCoupon; import com.example.mybatis.service.SmsCouponService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.bind.annotation.RestController; /** * @author shanks on 2019-11-09 */ @RestController @RequestMapping("/voucher/web/") public class SmsCouponController { @Autowired SmsCouponService smsCouponService; @RequestMapping("/querySmsCouponDetail") public SmsCoupon querySmsCouponDetail(@RequestParam("id") int id){ SmsCoupon smsCoupon = smsCouponService.querySmsCouponDetail(id); return smsCoupon; } }package com.example.mybatis.service; import com.example.mybatis.domain.SmsCoupon; /** * @author shanks on 2019-11-09 */ public interface SmsCouponService { SmsCoupon querySmsCouponDetail(int id); } package com.example.mybatis.service.impl; import com.example.mybatis.domain.SmsCoupon; import com.example.mybatis.repository.SmsCouponDAO; import com.example.mybatis.service.SmsCouponService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; /** * @author shanks on 2019-11-09 */ @Service public class SmsCouponServiceImpl implements SmsCouponService { @Autowired private SmsCouponDAO smsCouponDAO; @Override public SmsCoupon querySmsCouponDetail(int id) { SmsCoupon smsCoupon = smsCouponDAO.queryById(id); return smsCoupon; } }package com.example.mybatis; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplication public class DemoMybatisApplication { public static void main(String[] args) { SpringApplication.run(DemoMybatisApplication.class, args); } }源代码：https://gitee.com/shanksV/springboot-mybatis.git
