springboot中添加注解扫描DAO层

1、在dao层的接口上加上@Mapper注解

@Mapper
public interface UserDao {
    @Insert("insert into tb_user (id,username,password) values (#{id},#{username},#{password})")
    int addUser(User user);
}

2、在启动类上加上@MapperScan(“dao层路径”)

@SpringBootApplication
@MapperScan("it.gm.springboot_project01.dao")
public class SpringbootProject01Application {

    public static void main(String[] args) {
        SpringApplication.run(SpringbootProject01Application.class, args);
    }

}
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原文链接：https://blog.csdn.net/z7kirictol/article/details/105454817