Several ways for Mybatis to enter the ginseng

    The main research here is to study several ways to transfer ginseng to Mybatis. To sum up, by the way record here.

   1. Entity class input parameters

     dao method

public void addAdmin(Admin admin);

     in mapper

<insert id="addAdmin" parameterType="com.znkj.entity.Admin">
		insert into t_admin (a_acount,a_password,a_power,a_name)
		values(#{a_acount},#{a_password},#{a_power},#{a_name})
    </insert>

     2. Enter the parameters by subscripting, it should be noted that the subscript of the first parameter is 0

      dao method

      

public List<T_user> queryT_userByPage(String page,String pageSize);

      in mapper

<select id="queryT_userByPage" resultMap="ResultMap">
		select u_id,u_account,u_password,u_power,u_phone,u_name from t_user
		limit  #{0},#{1}
    </select>

     3. Input parameters through the @param annotation in the dao method

        dao method

public int addUserrolemanage(@Param("userid") int userid,@Param("roleid") int roleid);

        in mapper

<insert id="addUserrolemanage">
		INSERT INTO `userrolemanage` (`user_id`, `role_id`)
		VALUES (#{userid},#{roleid})
    </insert>

       4. Enter the parameters through the list collection

        dao method

        

public int insertUserNoticeStatus(@Param("list")List<UserNoticeStatus> list);

        in mapper

        

<select id="insertUserNoticeStatus">
		insert into usernoticestatus (notice_id,user_id,status)
		values
		<foreach collection="list" item="uns">
			(#{uns.user_id},#{uns.c_id},#{uns.status})
		</foreach>
    </select>

        5. Enter the parameters through the map set

        First, the parameters are encapsulated into the map collection, and then passed into the dao method

        dao method

public int addAdmin(Map<String, Object> map) ;

        in mapper
        

    <insert id="addAdmin" parameterType="Map">
		insert into t_admin (a_acount,a_password,a_power,a_name)
		values(#{a_acount},#{a_password},#{a_power},#{a_name})
    </insert>

        Basically, there are several ways to enter the parameters, welcome to correct me.