
- 导入mybatis官方starter编写mapper接口。标准@Mapper注解com.liang.webadmin.mapper.AccountMapper编写实现接口类。com.liang.webadmin.service.AccountService编写sql映射文件并绑定mapper接口mybatis/mapper/AccountMapper.xml在application.yaml中指定Mapper配置文件的位置,以及指定全局配置文件的信息 (建议;配置在mybatis.configuration)resourcesapplication.yaml
1.导入mybatis官方starter
org.mybatis.spring.boot mybatis-spring-boot-starter2.1.4
- 编写mapper接口。标准@Mapper注解[^2]com.liang.webadmin.mapper.AccountMapper
import com.liang.webadmin.bean.Account;
import org.apache.ibatis.annotations.Mapper;
@Mapper
public interface AccountMapper {
public Account getAcct(Long id);
}
- 编写实现接口类。[^3]com.liang.webadmin.service.AccountService
import com.liang.webadmin.bean.Account;
import com.liang.webadmin.mapper.AccountMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
@Service
public class AccountService {
@Autowired
AccountMapper accountMapper;
public Account getAcctByid(Long id){
return accountMapper.getAcct(id);
};
}
- 编写sql映射文件并绑定mapper接口[^4]mybatis/mapper/AccountMapper.xml
select * from user where id=#{id}
- 在application.yaml中指定Mapper配置文件的位置,以及指定全局配置文件的信息 (建议;配置在mybatis.configuration)[^5]resourcesapplication.yaml
# 配置mybatis规则
mybatis:
# config-location: classpath:mybatis/mybatis-config.xml
mapper-locations: classpath:mybatis/mapper/*.xml
configuration:
map-underscore-to-camel-case: true
#可以不写全局;配置文件,所有全局配置文件的配置都放在configuration配置项中即可
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