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[Java教程]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。