Java中SpringBoot上传文件时报错：org.springframework.web.multipart.MaxUploadSizeExceededException

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#java #spring boot #前端

文章讲述了在SpringMVC中遇到的MaxUploadSizeExceededException，原因是文件上传大小超过了默认的2MB限制。解决方法是找到并调整servlet.multipart.max-file-size配置以适应更大的文件尺寸。

完整报错信息：

org.springframework.web.multipart.MaxUploadSizeExceededException: Maximum upload size exceeded; nested exception is java.lang.IllegalStateException:
org.apache.tomcat.util.http.fileupload.impl.SizeLimitExceededException: the request was rejected because its size (803477000) exceeds the configured maximum (20971520)

原因：文件上传大小超出配置文件中的限制

解决方案：修改配置文件

找到配置中的spring:servlet:multipart下的文件大小配置，修改为大于你文件大小的值即可。

在这里插入图片描述

springboot 上传文件设置文件大小限制
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报错内容： org.springframework.web.multipart.MaxUploadSizeExceededException:Maximumuploadsizeexceeded;nestedexceptionisjava.lang.IllegalStateException:org.apache.tomcat.util.http.fileupload.impl.SizeLimitExceededException:therequestwasrejectedbe...
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controller类： @RequestMapping(path = "/file", method = RequestMethod.POST) public UploadMsg uploadFile(@RequestParam("uploadFile") MultipartFile file, String userCode) throws Exception { ...
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META-INF/MANIFEST.MF META-INF/license.txt org.springframework.remoting.caucho.BurlapClientInterceptor.class org.springframework.remoting.caucho.BurlapProxyFactoryBean.class org.springframework.remoting.caucho.BurlapServiceExporter.class org.springframework.remoting.caucho.Hessian1SkeletonInvoker.class org.springframework.remoting.caucho.Hessian2SkeletonInvoker.class org.springframework.remoting.caucho.HessianClientInterceptor.class org.springframework.remoting.caucho.HessianProxyFactoryBean.class org.springframework.remoting.caucho.HessianServiceExporter.class org.springframework.remoting.caucho.HessianSkeletonInvoker.class org.springframework.remoting.httpinvoker.AbstractHttpInvokerRequestExecutor.class org.springframework.remoting.httpinvoker.CommonsHttpInvokerRequestExecutor.class org.springframework.remoting.httpinvoker.HttpInvokerClientConfiguration.class org.springframework.remoting.httpinvoker.HttpInvokerClientInterceptor.class org.springframework.remoting.httpinvoker.HttpInvokerProxyFactoryBean.class org.springframework.remoting.httpinvoker.HttpInvokerRequestExecutor.class org.springframework.remoting.httpinvoker.HttpInvokerServiceExporter.class org.springframework.remoting.httpinvoker.SimpleHttpInvokerRequestExecutor.class org.springframework.remoting.jaxrpc.JaxRpcPortClientInterceptor.class org.springframework.remoting.jaxrpc.JaxRpcPortProxyFactoryBean.class org.springframework.remoting.jaxrpc.JaxRpcServicePostProcessor.class org.springframework.remoting.jaxrpc.JaxRpcSoapFaultException.class org.springframework.remoting.jaxrpc.LocalJaxRpcServiceFactory.class org.springframework.remoting.jaxrpc.LocalJaxRpcServiceFactoryBean.class org.springframework.remoting.jaxrpc.ServletEndpointSupport.class org.springframework.remoting.jaxrpc.support.AxisBeanMappingServicePostProcessor.class org.springframework.remoting.jaxws.JaxWsPortClientInterceptor.class org.springframework.remoting.jaxws.JaxWsPortProxyFactoryBean.class org.springframework.remoting.jaxws.JaxWsSoapFaultException.class org.springframework.remoting.jaxws.LocalJaxWsServiceFactory.class org.springframework.remoting.jaxws.LocalJaxWsServiceFactoryBean.class org.springframework.remoting.jaxws.SimpleJaxWsServiceExporter.class org.springframework.web.HttpRequestHandler.class org.springframework.web.HttpRequestMethodNotSupportedException.class org.springframework.web.HttpSessionRequiredException.class org.springframework.web.bind.EscapedErrors.class org.springframework.web.bind.MissingServletRequestParameterException.class org.springframework.web.bind.RequestUtils.class org.springframework.web.bind.ServletRequestBindingException.class org.springframework.web.bind.ServletRequestDataBinder.class org.springframework.web.bind.ServletRequestParameterPropertyValues.class org.springframework.web.bind.ServletRequestUtils.class org.springframework.web.bind.WebDataBinder.class org.springframework.web.bind.annotation.InitBinder.class org.springframework.web.bind.annotation.ModelAttribute.class org.springframework.web.bind.annotation.RequestMapping.class org.springframework.web.bind.annotation.RequestMethod.class org.springframework.web.bind.annotation.RequestParam.class org.springframework.web.bind.annotation.SessionAttributes.class org.springframework.web.bind.support.ConfigurableWebBindingInitializer.class org.springframework.web.bind.support.DefaultSessionAttributeStore.class org.springframework.web.bind.support.SessionAttributeStore.class org.springframework.web.bind.support.SessionStatus.class org.springframework.web.bind.support.SimpleSessionStatus.class org.springframework.web.bind.support.WebBindingInitializer.class org.springframework.web.context.ConfigurableWebApplicationContext.class org.springframework.web.context.ContextLoader.class org.springframework.web.context.ContextLoaderListener.class org.springframework.web.context.ContextLoaderServlet.class org.springframework.web.context.ServletConfigAware.class org.springframework.web.context.ServletContextAware.class org.springframework.web.context.WebApplicationContext.class org.springframework.web.context.request.AbstractRequestAttributes.class org.springframework.web.context.request.AbstractRequestAttributesScope.class org.springframework.web.context.request.Log4jNestedDiagnosticContextInterceptor.class org.springframework.web.context.request.RequestAttributes.class org.springframework.web.context.request.RequestContextHolder.class org.springframework.web.context.request.RequestContextListener.class org.springframework.web.context.request.RequestScope.class org.springframework.web.context.request.ServletRequestAttributes.class org.springframework.web.context.request.ServletWebRequest.class org.springframework.web.context.request.SessionScope.class org.springframework.web.context.request.WebRequest.class org.springframework.web.context.request.WebRequestInterceptor.class org.springframework.web.context.support.AbstractRefreshableWebApplicationContext.class org.springframework.web.context.support.ContextExposingHttpServletRequest.class org.springframework.web.context.support.GenericWebApplicationContext.class org.springframework.web.context.support.HttpRequestHandlerServlet.class org.springframework.web.context.support.PerformanceMonitorListener.class org.springframework.web.context.support.RequestHandledEvent.class org.springframework.web.context.support.ServletContextAttributeExporter.class org.springframework.web.context.support.ServletContextAttributeFactoryBean.class org.springframework.web.context.support.ServletContextAwareProcessor.class org.springframework.web.context.support.ServletContextFactoryBean.class org.springframework.web.context.support.ServletContextParameterFactoryBean.class org.springframework.web.context.support.ServletContextPropertyPlaceholderConfigurer.class org.springframework.web.context.support.ServletContextResource.class org.springframework.web.context.support.ServletContextResourceLoader.class org.springframework.web.context.support.ServletContextResourcePatternResolver.class org.springframework.web.context.support.ServletRequestHandledEvent.class org.springframework.web.context.support.StaticWebApplicationContext.class org.springframework.web.context.support.WebApplicationContextUtils.class org.springframework.web.context.support.WebApplicationObjectSupport.class org.springframework.web.context.support.XmlWebApplicationContext.class org.springframework.web.filter.AbstractRequestLoggingFilter.class org.springframework.web.filter.CharacterEncodingFilter.class org.springframework.web.filter.CommonsRequestLoggingFilter.class org.springframework.web.filter.DelegatingFilterProxy.class org.springframework.web.filter.GenericFilterBean.class org.springframework.web.filter.Log4jNestedDiagnosticContextFilter.class org.springframework.web.filter.OncePerRequestFilter.class org.springframework.web.filter.RequestContextFilter.class org.springframework.web.filter.ServletContextRequestLoggingFilter.class org.springframework.web.jsf.DecoratingNavigationHandler.class org.springframework.web.jsf.DelegatingNavigationHandlerProxy.class org.springframework.web.jsf.DelegatingPhaseListenerMulticaster.class org.springframework.web.jsf.DelegatingVariableResolver.class org.springframework.web.jsf.FacesContextUtils.class org.springframework.web.jsf.SpringBeanVariableResolver.class org.springframework.web.jsf.WebApplicationContextVariableResolver.class org.springframework.web.jsf.el.SpringBeanFacesELResolver.class org.springframework.web.jsf.el.WebApplicationContextFacesELResolver.class org.springframework.web.multipart.MaxUploadSizeExceededException.class org.springframework.web.multipart.MultipartException.class org.springframework.web.multipart.MultipartFile.class org.springframework.web.multipart.MultipartHttpServletRequest.class org.springframework.web.multipart.MultipartResolver.class org.springframework.web.multipart.commons.CommonsFileUploadSupport.class org.springframework.web.multipart.commons.CommonsMultipartFile.class org.springframework.web.multipart.commons.CommonsMultipartResolver.class org.springframework.web.multipart.support.AbstractMultipartHttpServletRequest.class org.springframework.web.multipart.support.ByteArrayMultipartFileEditor.class org.springframework.web.multipart.support.DefaultMultipartHttpServletRequest.class org.springframework.web.multipart.support.MultipartFilter.class org.springframework.web.multipart.support.StringMultipartFileEditor.class org.springframework.web.util.CookieGenerator.class org.springframework.web.util.ExpressionEvaluationUtils.class org.springframework.web.util.HtmlCharacterEntityDecoder.class org.springframework.web.util.HtmlCharacterEntityReferences.class org.springframework.web.util.HtmlUtils.class org.springframework.web.util.HttpSessionMutexListener.class org.springframework.web.util.IntrospectorCleanupListener.class org.springframework.web.util.JavaScriptUtils.class org.springframework.web.util.Log4jConfigListener.class org.springframework.web.util.Log4jConfigServlet.class org.springframework.web.util.Log4jWebConfigurer.class org.springframework.web.util.NestedServletException.class org.springframework.web.util.TagUtils.class org.springframework.web.util.UrlPathHelper.class org.springframework.web.util.WebAppRootListener.class org.springframework.web.util.WebUtils.class org/springframework/web/context/ContextLoader.properties org/springframework/web/util/HtmlCharacterEntityReferences.properties
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### 如何处理 `org.springframework.web.multipart.MaxUploadSizeExceededException` 异常 在Spring Boot中，当上传文件大小超过服务器配置的最大限制时，会抛出 `org.springframework.web.multipart.MaxUploadSizeExceededException` 异常。以下是解决该问题的详细方法： #### 1. 配置文件调整 可以在 `application.properties` 或 `application.yml` 文件中设置文件上传的最大限制。例如： ```properties # application.properties spring.servlet.multipart.max-file-size=10MB spring.servlet.multipart.max-request-size=10MB ``` 或者在 `application.yml` 中配置为： ```yaml # application.yml spring: servlet: multipart: max-file-size: 10MB max-request-size: 10MB ``` 上述配置分别设置了单个文件和整个请求的最大大小[^1]。 #### 2. 自定义异常处理 为了更好地处理此异常，可以创建一个全局异常处理器。例如： ```java import org.springframework.web.bind.annotation.ExceptionHandler; import org.springframework.web.bind.annotation.RestControllerAdvice; import org.springframework.web.multipart.MaxUploadSizeExceededException; @RestControllerAdvice public class FileUploadExceptionAdvice { @ExceptionHandler(MaxUploadSizeExceededException.class) public ResponseEntity<String> handleMaxSizeException(MaxUploadSizeExceededException exc) { return ResponseEntity.status(HttpStatus.EXPECTATION_FAILED) .body("File too large! Maximum allowed size is " + exc.getMaxUploadSize() + " bytes."); } } ``` 通过这种方式，可以向客户端返回更友好的错误信息[^3]。 #### 3. Servlet容器配置 如果使用的是嵌入式Tomcat，可以通过修改Servlet容器的配置来调整文件上传限制。例如，在Spring Boot的主类或配置类中添加以下代码： ```java import org.springframework.boot.web.embedded.tomcat.TomcatConnectorCustomizer; import org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; @Configuration public class TomcatConfig { @Bean public TomcatServletWebServerFactory tomcatEmbedded() { TomcatServletWebServerFactory tomcatFactory = new TomcatServletWebServerFactory(); tomcatFactory.addConnectorCustomizers((TomcatConnectorCustomizer) connector -> { connector.setMaxPostSize(10 * 1024 * 1024); // 设置为10MB }); return tomcatFactory; } } ``` 这段代码直接调整了Tomcat的POST请求大小限制[^4]。 #### 4. 请求头与参数体检查 确保客户端发送的请求头正确。对于文件上传，建议将 `Content-Type` 设置为 `multipart/form-data`，而不是 `application/json`。如果使用工具（如Postman）测试接口，需确保在请求体中选择了 `form-data` 而非其他类型[^5]。 --- ###
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