使用mybatis执行SQL语句时有参数出现返回NULL值如何解决

<select id="selectByArticle" parametertype="com.pet.bean.Article" resultmap="com.pet.bean.Article">  SELECT   FROM ARTICLE         </select><sql id="queryCondition">  <if test="@org.apache.commons.lang.StringUtils@isNotBlank(id)">AND ID = #{id,jdbcType=Integer}</if>  <if test="@org.apache.commons.lang.StringUtils@isNotBlank(authorName)">AND AUTHOR_NAME = #{authorName,jdbcType=VARCHAR}</if>  <if test="@org.apache.commons.lang.StringUtils@isNotBlank(title)">AND TITLE = #{title,jdbcType=VARCHAR}</if>  <if test="@org.apache.commons.lang.StringUtils@isNotBlank(content)">AND CONTENT = #{content,jdbcType=VARCHAR}</if>  <if test="@org.apache.commons.lang.StringUtils@isNotBlank(makeTime)">AND MAKE_TIME = #{makeTime,jdbcType=VARCHAR}</if>  <if test="@org.apache.commons.lang.StringUtils@isNotBlank(updateTime)">AND UPDATE_TIME = #{updateTime,jdbcType=VARCHAR}</if>  <if test="@org.apache.commons.lang.StringUtils@isNotBlank(kind)">AND KIND = #{kind,jdbcType=VARCHAR}</if>  <if test="@org.apache.commons.lang.StringUtils@isNotBlank(about)">AND ABOUT = #{about,jdbcType=VARCHAR}</if>  <if test="@org.apache.commons.lang.StringUtils@isNotBlank(status)">AND STATUS = #{status,jdbcType=VARCHAR}</if>  </sql>