mybatis：字符串相等的比较

必须得用toString()进行转换，否则比较不成功。

<sql id="where_kflb">
      <choose>
        <when test="kskm == '2'.toString()">
          select kflbid from t_kflb where kfkm='2' and kflbid not in ('10100','10200','20000')
        </when>
        <otherwise>
          select kflbid from t_kflb where kfkm='3' and kflbid not in ('30100','30200','40000')
        </otherwise>
      </choose>    
    </sql>