Spring Boot 2.x 编写 RESTful API (四) 使用 Mybatis

2019-04-06

用Spring Boot编写RESTful API 学习笔记

添加依赖

<dependency>
	<groupId>org.mybatis.spring.boot</groupId>
	<artifactId>mybatis-spring-boot-starter</artifactId>
	<version>1.3.2</version>
</dependency>

<dependency>
	<groupId>mysql</groupId>
	<artifactId>mysql-connector-java</artifactId>
	<version>5.1.41</version>
</dependency>

添加配置

spring:
  datasource:
    driver-class-name: com.mysql.jdbc.Driver
    url: jdbc:mysql://127.0.0.1:3306/tvseries?useSSL=false
    username: root
    password: root
    
    
mybatis:
  configuration:
    map-underscore-to-camel-case: true # 下划线转驼峰命名
  mapper-locations: classpath:com.karonda.restapi.dao/*.xml # 配置 mapper xml 文件所在路径

启动类添加

1	@MapperScan("com.karonda.restapi.dao")

新建 dao

public interface TvSeriesDao {

    @Select("select * from tv_series where id=#{id}")
    TvSeries getOneById(int id);

    @Select("select * from tv_series")
    List<TvSeries> getAll();

    int update(TvSeries tvSeries);
    int insert(TvSeries tvSeries);

    @Delete("delete from tv_series where id=#{id}")
    int delete(int id);

    @Update("update tv_series set status=-1, reason=#{reason} where id=#{id}")
    int logicDelete(int id, String reason);
}

新增 mapper TvCharacterDao.xml

<?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.karonda.restapi.dao.TvSeriesDao" >
  
  <insert id="insert" parameterType="com.karonda.restapi.pojo.TvSeries"
  			useGeneratedKeys="true" keyProperty="id">
    insert into tv_series (name, season_count, origin_release )
    		values (#{name}, #{seasonCount}, #{originRelease} )
  </insert>
  
  <update id="update" parameterType="com.karonda.restapi.pojo.TvSeries">
    update tv_series set name=#{name}, season_count=#{seasonCount}, origin_release=#{originRelease} where id=#{id}
  </update>
  
</mapper>

新建 service

@Service
public class TvSeriesService {
    @Autowired
    TvSeriesDao tvSeriesDao;

    public List<TvSeries> getAllSeries(){
        return tvSeriesDao.getAll();
    }
}

修改 Controller

@Autowired
TvSeriesService tvSeriesService;

@GetMapping
public List<TvSeries> getAll() {
    if(log.isTraceEnabled()) {
        log.trace("getAll() ");
    }
    List<TvSeries> list = tvSeriesService.getAllSeries();
    
    return list;
}

源码：spring-boot-2-restful