ms sql server 在abator生成的 insert 无法获取插入 id 的原因

  <insert id="abatorgenerated_insert" parameterClass="net.xxxxxl.dataobject.Users">
    <!--
      WARNING - This element is automatically generated by Abator for iBATIS, do not modify.
      This element was generated on Fri Aug 21 21:21:33 CST 2015.
    -->    
    insert into Users (user_Pwd, user_Nickname, user_Firstname, user_Lastname, user_Sex,
      user_Birthday, FK_City, ....
      user_LoginState, user_Collecter, user_Collected, user_lang, user_login_fail_times, user_Money,
      weixin_openid)
    values (#user_Pwd:VARCHAR#, #user_Nickname:VARCHAR#, #user_Firstname:VARCHAR#,
      #user_Lastname:VARCHAR#, #user_Sex:CHAR#, #user_Birthday:VARCHAR#, #FK_City:BIGINT#,
     .....
      #user_login_fail_times:INTEGER#, #user_Money:DOUBLE#, #weixin_openid:VARCHAR#)
    <selectKey keyProperty="userId" resultClass="java.lang.Long">
      SELECT SCOPE_IDENTITY()
    </selectKey>
  </insert>

上面是 abator 生成的对应于ms sql server 的insert 代码，实际运行时，无法获取 插入记录对应的 id 值，虽然里面包含了：

    <selectKey keyProperty="userId" resultClass="java.lang.Long">
      SELECT SCOPE_IDENTITY()
    </selectKey>

正确的方法是，让 <selectKey> 子句包含住整个 insert 语句，如下所示：

  <insert id="abatorgenerated_insert" parameterClass="net.xxxxxx.dal.dataobject.Users">
    <!--
      WARNING - This element is automatically generated by Abator for iBATIS, do not modify.
      This element was generated on Fri Aug 21 21:21:33 CST 2015.
    -->
    <selectKey keyProperty="userId" resultClass="java.lang.Long">
    insert into Users (user_Pwd, user_Nickname, user_Firstname, user_Lastname, user_Sex,
      user_Birthday, .....
      weixin_openid)
    values (#user_Pwd:VARCHAR#, #user_Nickname:VARCHAR#, #user_Firstname:VARCHAR#,
     ......
      #user_login_fail_times:INTEGER#, #user_Money:DOUBLE#, #weixin_openid:VARCHAR#)
    
      SELECT SCOPE_IDENTITY()
    </selectKey>
  </insert>

这样才能正确的获取 insert 语句执行时对应的 id 主键值。