insert into tb_wrong_rec_apply (num, cid,        `type`, `describe`, solution,        seller_tel, seller_qq, seller_email,        buyer_tel, buyer_qq, buyer_email,        submit_time, update_time, r_wrong_id,        ext1, ext2, img,state        )        values (#{num,jdbcType=VARCHAR}, #{cid,jdbcType=INTEGER},        #{type,jdbcType=VARCHAR}, #{describe,jdbcType=VARCHAR}, #{solution,jdbcType=VARCHAR},        #{sellerTel,jdbcType=VARCHAR}, #{sellerQq,jdbcType=VARCHAR}, #{sellerEmail,jdbcType=VARCHAR},        #{buyerTel,jdbcType=VARCHAR}, #{buyerQq,jdbcType=VARCHAR}, #{buyerEmail,jdbcType=VARCHAR},        #{submitTime,jdbcType=TIMESTAMP}, #{updateTime,jdbcType=TIMESTAMP}, #{rWrongId,jdbcType=INTEGER},        #{ext1,jdbcType=VARCHAR}, #{ext2,jdbcType=VARCHAR}, #{img,jdbcType=LONGVARBINARY},#{state,jdbcType=INTEGER}        )    
    

useGeneratedKeys="true" keyProperty="id"

关键地方就是上面的两个配置

useGeneratedKeys 取值范围true|false 默认值是：false。 含义：设置是否使用JDBC的getGenereatedKeys方法获取主键并赋值到keyProperty设置的领域模型属性中。

keyProperty 取值为映射类主键属性的变量名