异常：org.apache.ibatis.binding.BindingException: Mapper method 'xyz.mytch.home.dao.HomeDao.findConTota

异常提示：

org.apache.ibatis.binding.BindingException: Mapper method 'xyz.mytch.home.dao.HomeDao.findConTotalCostByOpenId attempted to return null from a method with a primitive return type (float).at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:93)at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:59)at com.sun.proxy.$Proxy24.findConTotalCostByOpenId(Unknown Source)at xyz.mytch.home.service.serviceImpl.HomeServiceImpl.findConTotalCostByOpenId(HomeServiceImpl.java:65)at xyz.mytch.home.action.HomeAction.getTotalCostAndCalories(HomeAction.java:52)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:209)at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136)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:871)at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:777)at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:991)at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:925)at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:978)at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:870)at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:855)at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:108)at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:522)at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349)at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:1110)at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:785)at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1425)at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)at java.lang.Thread.run(Thread.java:745)

出现场景及部分代码

@Repository("homeDao")
public interface HomeDao {******float findConTotalCostByOpenId(@Param("openid") String openid,@Param("startDate") String startDate,@Param("endDate") String endDate);***
}

HomeDao.xml<!-- 根据openid查询本周买调味品的总花费 --><select id="findConTotalCostByOpenId"  parameterType="String" resultType="float">SELECT ROUND(SUM(conTotalCost),2) FROM conBuyTab WHERE openid = #{openid}AND conBuyTime >= #{startDate} <![CDATA[ AND conBuyTime <= #{endDate} ]]></select>

原因分析

查询的sql中的开始日期和结束日期是根据系统时间算出来的，每一天都会变。
当根据这个时间从数据库中查询到的结果为空时，就会报【org.apache.ibatis.binding.BindingException】这个异常。

解决方法

改变返回值为String。

String findConTotalCostByOpenId(@Param("openid") String openid,@Param("startDate") String startDate,@Param("endDate") String endDate);

<select id="findConTotalCostByOpenId"  parameterType="String" resultType="String">SELECT ROUND(SUM(conTotalCost),2) FROM conBuyTab WHERE openid = #{openid}AND conBuyTime >= #{startDate} <![CDATA[ AND conBuyTime <= #{endDate} ]]></select>

以上。

异常：org.apache.ibatis.binding.BindingException: Mapper method 'xyz.mytch.home.dao.HomeDao.findConTota相关推荐

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异常：org.apache.ibatis.binding.BindingException: Mapper method 'xyz.mytch.home.dao.HomeDao.findConTota

异常提示：

出现场景及部分代码

原因分析

解决方法

以上。

异常：org.apache.ibatis.binding.BindingException: Mapper method 'xyz.mytch.home.dao.HomeDao.findConTota相关推荐

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