记录使用Spring MultipartFile上传文件超过最大限制时，无法捕获MaxUploadSizeExceededException异常的问题

2024-07-12 20:53| 来源: 网络整理| 查看: 265

一：MaxUploadSizeExceededException 问题

SpringBoot项目配置了配置了上传文件的最大值限制，当上传的文件超过最大值的限制时会抛出MaxUploadSizeExceededException异常，如下：

2020-01-07 09:40:31 [http-nio-8081-exec-1] [ERROR] o.a.c.c.C.[.[.[/video].[dispatcherServlet] [175]- Servlet.service() for servlet [dispatcherServlet] in context with path [/video] threw exception [Request processing failed; nested exception is org.springframework.web.multipart.MaxUploadSizeExceededException: Maximum upload size exceeded; nested exception is java.lang.IllegalStateException: org.apache.tomcat.util.http.fileupload.FileUploadBase$SizeLimitExceededException: the request was rejected because its size (71091753) exceeds the configured maximum (1048576)] with root cause org.apache.tomcat.util.http.fileupload.FileUploadBase$SizeLimitExceededException: the request was rejected because its size (71091753) exceeds the configured maximum (1048576) at org.apache.tomcat.util.http.fileupload.FileUploadBase$FileItemIteratorImpl.(FileUploadBase.java:808) at org.apache.tomcat.util.http.fileupload.FileUploadBase.getItemIterator(FileUploadBase.java:256) at org.apache.tomcat.util.http.fileupload.FileUploadBase.parseRequest(FileUploadBase.java:280) at org.apache.catalina.connector.Request.parseParts(Request.java:2868) at org.apache.catalina.connector.Request.parseParameters(Request.java:3196) at org.apache.catalina.connector.Request.getParameter(Request.java:1113) at org.apache.catalina.connector.RequestFacade.getParameter(RequestFacade.java:381) at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:85) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:526) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:860) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1589) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748)

此时通过@RestControllerAdvice全局异常捕获类，也无法捕获到该异常，导致结果无任何响应在这里插入图片描述

二：解决办法在SpringBoot的application.properties文件中加上如下配置 spring.servlet.multipart.max-file-size = 50MB spring.servlet.multipart.max-request-size = 50MB spring.servlet.multipart.resolve-lazily=true #设置为懒加载，不然依然会捕获不到异常 server.tomcat.max-swallow-size = 100MB # 最重要的是这一行,可设置为 -1 不作限制

注意: 上面最重要的是要配置内嵌的 tomcat 的最大吞吐量即 max-swallow-size，可以设置 -1 不限制，也可以设置一下比较大的数字这里微酷设置 100M。当上传文件超 tomcat 的大小限制后会先于 Controller 触发异常，所以这时我们的异常处理类无法捕获 Controller 层的异常了，这就是无法捕获到异常的根本原因。

配置全局异常类，用于捕获MaxUploadSizeExceededException 异常 @RestControllerAdvice(annotations = {Controller.class, RestController.class}) public class GlobalExceptionHandler { @ExceptionHandler(MultipartException.class) public ResponseResult uploadExcepttion(MultipartException e){ return ResponseResult.failed(500,"上传失败"); } }

问题解决，上传异常后，能正常的捕获到异常，并响应接口信息在这里插入图片描述

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