使用注解方式配置sql语句,不需要写对应的UserMapper.xml
package com.mapper; import java.util.List; import org.apache.ibatis.annotations.Delete; import org.apache.ibatis.annotations.Insert; import org.apache.ibatis.annotations.Select; import org.apache.ibatis.annotations.SelectKey; import org.apache.ibatis.annotations.Update; import com.pojo.User; //不需要写UserMapper的实现类 public interface UserMapper { // 用于返回该条数据插入后的id @SelectKey(statement = "select last_insert_id()", before = false, keyProperty = "id", resultType = Integer.class) @Insert("insert into t_user (`last_name`,`sex`) values(#{lastName},#{sex})") public int saveUser(User user); @Delete("delete from t_user where id=#{id}") public int deleteById(Integer id); @Update(value = "update t_user set last_name=#{lastName},sex=#{sex} where id=#{id}") public int updateUser(User user); @Select("select id,last_name lastName,sex from t_user where id=#{id}") public User queryUserById(Integer id); @Select("select id,last_name lastName,sex from t_user") public List<User> queryUsers(); }
原文地址:https://www.cnblogs.com/ywqtro/p/12242692.html
时间: 2024-11-10 15:27:32