引入依赖

<dependency>
    <groupId>cn.sexycode</groupId>
    <artifactId>myjpa-data-spring-boot-starter</artifactId>
    <version>0.0.4-SNAPSHOT</version>
</dependency>
<dependency>
    <groupId>org.mybatis.spring.boot</groupId>
    <artifactId>mybatis-spring-boot-starter</artifactId>
    <version>2.1.3</version>
</dependency>

配置数据源和mapper扫描

mybatis:
  mapper-locations: UserMapper.xml

spring:
  datasource:
    password:
      zxcf123456
    username: root
    url: jdbc:mysql://localhost:3306/jpademo?serverTimezone=Asia/Shanghai&useUnicode=true&characterEncoding=utf8&useSSL=false

@MapperScan("cn.sexycode.myjpa.samples.dao")

修改dao， 继承自MyjpaRepository

public interface UserDao extends MyjpaRepository<User, String> {
    List<User> findByFullName(String name);
}

使用

@SpringBootApplication(scanBasePackages = "cn.sexycode.myjpa.samples")
@MapperScan("cn.sexycode.myjpa.samples.dao")
public class MyJpaSamplesApplication {
  public static void main(String[] args) {
    ConfigurableApplicationContext context = SpringApplication.run(MyJpaSamplesApplication.class);

    UserDao userDao = context.getBean(UserDao.class);
    System.out.println("user: " + userDao.findByFullName("1"));
        //此方法来自 spring data jpa
    System.out.println("user: " + userDao.findById("1"));
  }
}

使用此方式时，spring已经为我们提供了超多的接口，加上IDEA的智能提示，还能由我们自己控制sql，感觉超级爽。