mybatis test标签判断值是否相等

        <if test="id != null and id !=''">
             and id != #{id}     
         </if>   

<select id="xxxx" parameterType="map" resultMap="BaseResultMap"> 
         。。。。。。。
     <choose>
                <when test="hasAttach.toString() == '1'.toString()">
                    having  attachCount &gt;= #{hasAttach}
                </when>
                <otherwise>
                    having  attachCount = #{hasAttach}
                </otherwise>
            </choose>