• Caused by: java.lang.NumberFormatException: For input string: "undefined"


    1、错误描述

    2017-01-17 08:49:57,966 [http-apr-8080-exec-3] ERROR [core.interceptor.ExceptionResolverCustom] - Failed to convert value of type 'java.lang.String' to required type 'java.lang.Integer'; nested exception is java.lang.NumberFormatException: For input string: "undefined"
      org.springframework.beans.TypeMismatchException: Failed to convert value of type 'java.lang.String' to required type 'java.lang.Integer'; nested exception is java.lang.NumberFormatException: For input string: "undefined"
    	at org.springframework.beans.TypeConverterSupport.doConvert(TypeConverterSupport.java:77)
    	at org.springframework.beans.TypeConverterSupport.convertIfNecessary(TypeConverterSupport.java:47)
    	at org.springframework.validation.DataBinder.convertIfNecessary(DataBinder.java:582)
    	at org.springframework.web.method.annotation.AbstractNamedValueMethodArgumentResolver.resolveArgument(AbstractNamedValueMethodArgumentResolver.java:105)
    	at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:79)
    	at org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:157)
    	at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:124)
    	at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
    	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:749)
    	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:689)
    	at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:83)
    	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:938)
    	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:870)
    	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961)
    	at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:852)
    	at javax.servlet.http.HttpServlet.service(HttpServlet.java:624)
    	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837)
    	at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
    	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
    	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
    	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    	at com.alibaba.druid.support.http.WebStatFilter.doFilter(WebStatFilter.java:123)
    	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
    	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    	at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61)
    	at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108)
    	at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137)
    	at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
    	at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66)
    	at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449)
    	at org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365)
    	at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)
    	at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)
    	at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383)
    	at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362)
    	at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
    	at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344)
    	at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261)
    	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
    	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
    	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
    	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
    	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
    	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
    	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
    	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
    	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
    	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
    	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:436)
    	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1078)
    	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625)
    	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2517)
    	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2506)
    	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    	at java.lang.Thread.run(Thread.java:745)
    Caused by: java.lang.NumberFormatException: For input string: "undefined"
    	at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
    	at java.lang.Integer.parseInt(Integer.java:492)
    	at java.lang.Integer.valueOf(Integer.java:582)
    	at org.springframework.util.NumberUtils.parseNumber(NumberUtils.java:171)
    	at org.springframework.beans.propertyeditors.CustomNumberEditor.setAsText(CustomNumberEditor.java:113)
    	at org.springframework.beans.TypeConverterDelegate.doConvertTextValue(TypeConverterDelegate.java:430)
    	at org.springframework.beans.TypeConverterDelegate.doConvertValue(TypeConverterDelegate.java:403)
    	at org.springframework.beans.TypeConverterDelegate.convertIfNecessary(TypeConverterDelegate.java:181)
    	at org.springframework.beans.TypeConverterDelegate.convertIfNecessary(TypeConverterDelegate.java:93)
    	at org.springframework.beans.TypeConverterSupport.doConvert(TypeConverterSupport.java:64)
    	... 61 more
    

    2、错误原因

            在后台接口发送请求时,用get方式传递参数,并且是int类型

          student/queryStu/stuId

          stuId是int类型参数,但是当这个参数为undefined时,后台就会报错


    3、解决办法

    (1)可以将get方式转换成post方式

    (2)在前台进行判断,如果stuId为undefined或为null,不发送请求

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  • 原文地址:https://www.cnblogs.com/hzcya1995/p/13313969.html
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