Mybatis中insert返回主键取不到

<pre code_snippet_id="1749645" snippet_file_name="blog_20160707_1_7626269" name="code" class="java"><pre name="code" class="html"><pre code_snippet_id="1749645" snippet_file_name="blog_20160707_1_7626269" name="code" class="java"><pre name="code" class="html">//javaint count = xx.insert(obj);

//<span style="font-family: Arial, Helvetica, sans-serif;">此时要取得主键id，是取obj的id属性，insert的返回值永远都是受影响行数！</span>

//第一种<insert id="insert" parameterType="cn.**.beans.LogObject" ><selectKey resultType="java.lang.Integer" order="AFTER" keyProperty="id">SELECT LAST_INSERT_ID() AS ID</selectKey>INSERT INTO S_T_LOGS (ID,USER_ID,USER_NAME,USER_IP,OPERATION_TIME,DESCRIPTION,RESOURCE_ID)VALUES (#{id},#{userId},#{userName},#{userIp},#{operationTime},#{description},#{resourceId})</insert>//第二种<insert id="insert" parameterType="cn.***.beans.LogObject" useGeneratedKeys="true" keyProperty="id">INSERT INTO S_T_LOGS (ID,USER_ID,USER_NAME,USER_IP,OPERATION_TIME,DESCRIPTION,RESOURCE_ID)VALUES (#{id},#{userId},#{userName},#{userIp},{operationTime},{description},{resourceId})</insert>