mybatis 新增判断空

mybatis 动态新增

<insert id="insertSelective" parameterType="com.yimayhd.snscenter.client.domain.ComentDO" useGeneratedKeys="true" keyProperty="id" >

    insert into com_coment

    <trim prefix="(" suffix=")" suffixOverrides="," >

      domain,

      status,

      <if test="gmtCreated != null" >

        gmt_created,

      </if>

      <if test="gmtModified != null" >

        gmt_modified,

      </if>

    </trim>

    <trim prefix="values (" suffix=")" suffixOverrides="," >

      #{domain,jdbcType=INTEGER},

      #{status,jdbcType=INTEGER},

      <if test="gmtCreated != null" >

        #{gmtCreated,jdbcType=TIMESTAMP},

      </if>

      <if test="gmtModified != null" >

        #{gmtModified,jdbcType=TIMESTAMP},

      </if>

    </trim>

  </insert>