T.mybatis.spring.MyBatisSystemException:nestedexceptionisorg.apache.ibatis.reflection.Reflectio

There is no getter for property named &＃39;*&＃39; in &＃39;class java.lang.String&＃39;&＃xff0c;此错误之所以出现&＃xff0c;是因为mybatis在对parameterType&＃61;"String"的sql语句做了限制&＃xff0c;假如你使用这样的条件判断时&＃xff0c;就会出现该错误

报信息如下


.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.reflection.ReflectionException: There is no getter for property named &＃39;provName&＃39; in &＃39;class java.lang.String&＃39; at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:77) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:446) at com.sun.proxy.$Proxy97.selectList(Unknown Source) at org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:230) at org.apache.ibatis.binding.MapperMethod.executeForMany(MapperMethod.java:137) at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:75) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:59) at com.sun.proxy.$Proxy125.getSchoolInfoByProvName(Unknown Source) at cn.ls.tcis.service.impl.barnswallow.BarnSwallowInfoServiceImpl.getDistributeAge(BarnSwallowInfoServiceImpl.java:243) at cn.ls.tcis.controller.pc.StatisticController.getDistributeAge(StatisticController.java:94) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:189) at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:800) at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1038) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005) at org.springframework.web.servl

mapper接口

parameterType&＃61;"String"&＃xff0c;这一点是必须得&＃xff0c;参数类型必须是string。
该sql对应的mapper class中对应的方法为

List getSchoolInfoByProvName(String provName);也就是说&＃xff0c;传递的参数名为provName&＃xff0c;正常情况下&＃xff0c;这样的配置合情合理。
&＃xff0c;你有一个对应的test判断语句&＃xff0c;也可能是if。
那么这个时候&＃xff0c;项目运行该查询语句时&＃xff0c;就会抛出There is no getter for property named &＃39;username&＃39; in &＃39;class java.lang.String&＃39;错误&＃xff01; 

解决办法很简单&＃xff0c;你只需要把 provName !&＃61; null">修改为 就好了