mybatis添加返回主键id

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xml示例

<insert id="insertDownloadInfo" parameterType="java.util.Map" useGeneratedKeys="true" keyProperty="id" keyColumn="id">
		<selectKey resultType="int" order="AFTER" keyProperty="id"> 
	        SELECT LAST_INSERT_ID() as id
	    </selectKey>
		insert into newmedia_base.oppo_downloading_daily                
		<trim prefix="(" suffix=")" suffixOverrides=",">
		    <if test="id!= null">  id, </if>
			<if test="start_time!= null">  start_time, </if>
			<if test="end_time!= null">  end_time, </if>
			<if test="owner_id!= null">  owner_id, </if>
			<if test="owner_name!= null">  owner_name, </if>
			<if test="modular_name!= null">  modular_name, </if>
			<if test="status!= null">  status, </if>
			<if test="info!= null">  info, </if>
		</trim>
		<trim prefix="values (" suffix=")" suffixOverrides=",">
			<if test="id!= null">   #{id,jdbcType=VARCHAR},</if>
			<if test="start_time!= null">   #{start_time},</if>
			<if test="end_time!= null">   #{end_time},</if>
			<if test="owner_id!= null">   #{owner_id,jdbcType=INTEGER},</if>
			<if test="owner_name!= null">   #{owner_name,jdbcType=VARCHAR},</if>
			<if test="modular_name!= null">  #{modular_name,jdbcType=VARCHAR},</if>
			<if test="status!= null">  #{status,jdbcType=INTEGER},</if>
			<if test="info!= null">  #{info,jdbcType=VARCHAR},</if>
		</trim>
	</insert>

dao示例

public void insertDownloadInfo(Map<String,Object> map);

service示例

String id = null;
downDao.insertDownloadInfo(down);
id = down.get("id").toString();