Mybatis报错ReflectionException: There is no getter for property named 。 已加@Param注解

Question

mapper：List<String> queryBusiNum(@Param("isMonth") String isMonth,@Param("month") String month,@Param("busiType") String busiType);
XML:
<select id="queryBusiNum" resultType="java.lang.String">
        select concat(concat(region,':'),count(busitype))
        from busi_info_table here source = '2' and busitype = #{busiType}
        <choose>
            <when test="isMonth == '1'.toString()">

            </when>
            <otherwise>

            </otherwise>
        </choose>
        group by region
    </select>

报错内容：org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.reflection.ReflectionException: There is no getter for property named 'isMonth' in 'class [Ljava.lang.Object;'

已加@Param注解。试过实体类传参都不行。

Answer 1

<when test="isMonth == '1'">