SpringBoot——Mybatis-注解（十五）
Mapper配置类
注解方式是将xml转化为配置类：
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| package com.qn.mapper;
import com.qn.eneity.User;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Select;
import org.springframework.stereotype.Repository;
import java.util.List;
@Repository
@Mapper
public interface UserMapperAnocation {
@Select("SELECT * FROM user")
List<User> getAllUsers();
}
|
@Mapper注解或是启动类扫描
业务类
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| package com.qn.service;
import com.qn.eneity.User;
import com.qn.mapper.UserMapperAnocation;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
public class UserServiceAnocation {
@Autowired
UserMapperAnocation userMapperAnocation;
List<User> getAllUsers() {
return userMapperAnocation.getAllUsers();
}
}
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测试类
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| package com.qn.service;
import org.junit.jupiter.api.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
@SpringBootTest
@RunWith(SpringRunner.class)
class UserServiceAnocationTest {
@Autowired
UserServiceAnocation userServiceAnocation;
@Test
void getAllUsers() {
userServiceAnocation.getAllUsers()
.forEach(user -> System.out.println(user.toString()));
}
}
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