There is no getter for property named 'xxx' in 'class java.lang.String

Posted 2020-10-06

报错信息：

org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.reflection.ReflectionException: There is no getter for property named ‘investTime‘ in ‘class java.lang.String‘
    at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:76)
    at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:399)
    at com.sun.proxy.$Proxy30.selectOne(Unknown Source)
    at org.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:165)
    at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:69)
    at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:53)
    at com.sun.proxy.$Proxy36.mokuUserTotalAmount(Unknown Source)

错误写法：

<if test="investDate!=null and investDate!=‘‘">
    AND invest.addtime LIKE CONCAT(‘%‘,#{investDate},‘%‘)
</if>

正确写法：

<if test="_parameter!=null and _parameter!=‘‘">
      AND invest.addtime LIKE CONCAT(‘%‘,#{_parameter},‘%‘)
</if>

总结：

如果不用if test来判断的话，不管哪种写法都不会报错！建议都用_parameter来写，多参数用Map或者封装一个bean来做参数