在尝试使用Spring MVC上传文件时遇到错误，具体为'org.apache.commons.fileupload.FileItem'未找到。该错误通常是由于缺少commons-fileupload库导致的。解决方案是在项目的pom.xml文件中添加对commons-fileupload 1.3的依赖。
2019-12-23 11:22:38.506 ERROR 12232 — [nio-9999-exec-4] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Handler dispatch failed; nested exception is java.lang.NoClassDefFoundError: org/apache/commons/fileupload/FileItem] with root cause
java.lang.ClassNotFoundException: org.apache.commons.fileupload.FileItem
at java.net.URLClassLoader.findClass(URLClassLoader.java:382) ~[na:1.8.0_231]
at java.lang.ClassLoader.loadClass(ClassLoader.java:418) ~[na:1.8.0_231]
at sun.misc.Launcher
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AppClassLoader.loadClass(Launcher.java:355) ~[na:1.8.0_231] at java.lang.ClassLoader.loadClass(ClassLoader.java:351) ~[na:1.8.0_231] at java.lang.Class.getDeclaredMethods0(Native Method) ~[na:1.8.0_231] at java.lang.Class.privateGetDeclaredMethods(Class.java:2701) ~[na:1.8.0_231] at java.lang.Class.getDeclaredMethods(Class.java:1975) ~[na:1.8.0_231] at org.springframework.core.convert.support.IdToEntityConverter.getFinder(IdToEntityConverter.java:84) ~[spring-core-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.core.convert.support.IdToEntityConverter.matches(IdToEntityConverter.java:60) ~[spring-core-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.core.convert.support.GenericConversionService
AppClassLoader.loadClass(Launcher.java:355) [na:1.8.0231]atjava.lang.ClassLoader.loadClass(ClassLoader.java:351) [na:1.8.0231]atjava.lang.Class.getDeclaredMethods0(NativeMethod) [na:1.8.0231]atjava.lang.Class.privateGetDeclaredMethods(Class.java:2701) [na:1.8.0231]atjava.lang.Class.getDeclaredMethods(Class.java:1975) [na:1.8.0231]atorg.springframework.core.convert.support.IdToEntityConverter.getFinder(IdToEntityConverter.java:84) [spring−core−5.2.2.RELEASE.jar:5.2.2.RELEASE]atorg.springframework.core.convert.support.IdToEntityConverter.matches(IdToEntityConverter.java:60) [spring−core−5.2.2.RELEASE.jar:5.2.2.RELEASE]atorg.springframework.core.convert.support.GenericConversionServiceConvertersForPair.getConverter(GenericConversionService.java:669) ~[spring-core-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.core.convert.support.GenericConversionService
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Converters.getRegisteredConverter(GenericConversionService.java:566) ~[spring-core-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.core.convert.support.GenericConversionService
Converters.getRegisteredConverter(GenericConversionService.java:566) [spring−core−5.2.2.RELEASE.jar:5.2.2.RELEASE]atorg.springframework.core.convert.support.GenericConversionServiceConverters.find(GenericConversionService.java:550) ~[spring-core-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.core.convert.support.GenericConversionService.getConverter(GenericConversionService.java:260) ~[spring-core-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.core.convert.support.GenericConversionService.canConvert(GenericConversionService.java:145) ~[spring-core-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.beans.TypeConverterDelegate.convertIfNecessary(TypeConverterDelegate.java:127) ~[spring-beans-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.beans.TypeConverterSupport.convertIfNecessary(TypeConverterSupport.java:73) ~[spring-beans-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.beans.TypeConverterSupport.convertIfNecessary(TypeConverterSupport.java:53) ~[spring-beans-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.validation.DataBinder.convertIfNecessary(DataBinder.java:693) ~[spring-context-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.web.method.annotation.AbstractNamedValueMethodArgumentResolver.resolveArgument(AbstractNamedValueMethodArgumentResolver.java:125) ~[spring-web-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:121) ~[spring-web-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:167) ~[spring-web-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:134) ~[spring-web-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:106) ~[spring-webmvc-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:888) ~[spring-webmvc-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:793) ~[spring-webmvc-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040) ~[spring-webmvc-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943) ~[spring-webmvc-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909) ~[spring-webmvc-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:660) ~[tomcat-embed-core-9.0.29.jar:9.0.29]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) ~[tomcat-embed-core-9.0.29.jar:9.0.29]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) ~[tomcat-embed-core-9.0.29.jar:9.0.29]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.29.jar:9.0.29]
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.29.jar:9.0.29]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.29.jar:9.0.29]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.29.jar:9.0.29]
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.29.jar:9.0.29]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.29.jar:9.0.29]
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.29.jar:9.0.29]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.29.jar:9.0.29]
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.29.jar:9.0.29]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.29.jar:9.0.29]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) ~[tomcat-embed-core-9.0.29.jar:9.0.29]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-9.0.29.jar:9.0.29]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:526) [tomcat-embed-core-9.0.29.jar:9.0.29]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) [tomcat-embed-core-9.0.29.jar:9.0.29]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [tomcat-embed-core-9.0.29.jar:9.0.29]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) [tomcat-embed-core-9.0.29.jar:9.0.29]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [tomcat-embed-core-9.0.29.jar:9.0.29]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:367) [tomcat-embed-core-9.0.29.jar:9.0.29]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) [tomcat-embed-core-9.0.29.jar:9.0.29]
at org.apache.coyote.AbstractProtocol
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ConnectionHandler.process(AbstractProtocol.java:860) [tomcat-embed-core-9.0.29.jar:9.0.29] at org.apache.tomcat.util.net.NioEndpoint
ConnectionHandler.process(AbstractProtocol.java:860)[tomcat−embed−core−9.0.29.jar:9.0.29]atorg.apache.tomcat.util.net.NioEndpointSocketProcessor.doRun(NioEndpoint.java:1591) [tomcat-embed-core-9.0.29.jar:9.0.29]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.29.jar:9.0.29]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_231]
at java.util.concurrent.ThreadPoolExecutor
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Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_231] at org.apache.tomcat.util.threads.TaskThread
Worker.run(ThreadPoolExecutor.java:624)[na:1.8.0231]atorg.apache.tomcat.util.threads.TaskThreadWrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.29.jar:9.0.29]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_231]
在pom文件中添加
commons-fileupload
commons-fileupload
1.3
依赖
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