If in SQL determines the error

There is no getter for property named '*' in 'class java.lang.String', The reason why this error occurs , Because mybatis In the face of parameterType="String" Of sql Statement is restricted , If you use <when test="username != null"> When judging such conditions , This error will occur , But today, let's get to the bottom .

 Wrong report sql
<select id="queryDiscountInfo" parameterType="java.lang.String" resultType="com.elfsack.service.pos.entity.dto.Promotion">
   select
   `ID` as id,
   `NAME` as name,
   `PROMOTION_TYPE` as promotionType,
   `CONDITION_USE_TYPE` as conditionUseType,
   `PREFERENTIAL_CAP` as preferentialCap
   from
   T_PROMOTION
   where
   CONDITION_USE_TYPE = "0"
   AND PROMOTION_TYPE in("001","002")
   AND PREFERENTIAL_CAP >0
   AND ENDTIME IS   not NULL
   AND DEL_FLAG = "N"
   AND USE_STATUS = "1"
<if test="queryTime !=null and queryTime != """ >
   AND ENDTIME &gt;= #{queryTime}
</if>
</select>

At that time, it was directly if Get rid of it , Later, I read others' blogs and found the reason

Source code analysis There is no getter for property named '*' in 'class java.lang.String_ Silent Wang Er's blog -CSDN Blog https://blog.csdn.net/qing_gee/article/details/47122227 Source code analysis There is no getter for property named '*' in 'class java.lang.String_ Silent Wang Er's blog -CSDN Blog