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How to Handle Multipart Exception

I am building a site for uploading images. I am using Spring Boot, eureka and zuul proxy I am trying to limit the size of user uploaded images. When the image exceeds the limit, it should return some message, but instead it throws it away MultipartException

. The problem is, I don't know how to deal with this. I found many examples on the net, but none of them worked for me. I found an example with a servlet filter, but no luck. I have also tried with ControllerAdvice

, but I still can't seem to get the hang of it.

@ControllerAdvice
public class ExceptionController {

    @ExceptionHandler(FileUploadBase.FileSizeLimitExceededException.class)
    public String uploadedAFileTooLarge(FileUploadBase.FileSizeLimitExceededException e) {
        return "File upload error";
    }

    @ExceptionHandler(MultipartException.class)
    public String handleFileException(HttpServletRequest request, Throwable ex) {
        return "File upload error";
    }
}

this is application.yml:

spring:
  http:
    multipart:
      max-file-size: 5Mb
      max-request-size: 10Mb

This is the exception I am getting:

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.springframework.web.multipart.MultipartException: Could not parse multipart servlet request; nested exception is java.lang.IllegalStateException: org.apache.tomcat.util.http.fileupload.FileUploadBase$SizeLimitExceededException: the request was rejected because its size (41464012) exceeds the configured maximum (10485760)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:982) ~[spring-webmvc-4.3.5.RELEASE.jar:4.3.5.RELEASE]
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872) ~[spring-webmvc-4.3.5.RELEASE.jar:4.3.5.RELEASE]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:648) ~[tomcat-embed-core-8.5.6.jar:8.5.6]
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) ~[spring-webmvc-4.3.5.RELEASE.jar:4.3.5.RELEASE]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) ~[tomcat-embed-core-8.5.6.jar:8.5.6]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230) ~[tomcat-embed-core-8.5.6.jar:8.5.6]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) ~[tomcat-embed-core-8.5.6.jar:8.5.6]
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:726) ~[tomcat-embed-core-8.5.6.jar:8.5.6]
    at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:471) ~[tomcat-embed-core-8.5.6.jar:8.5.6]
    at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:394) ~[tomcat-embed-core-8.5.6.jar:8.5.6]
    at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:311) ~[tomcat-embed-core-8.5.6.jar:8.5.6]
    at org.apache.catalina.core.StandardHostValve.custom(StandardHostValve.java:395) [tomcat-embed-core-8.5.6.jar:8.5.6]
    at org.apache.catalina.core.StandardHostValve.status(StandardHostValve.java:254) [tomcat-embed-core-8.5.6.jar:8.5.6]
    at org.apache.catalina.core.StandardHostValve.throwable(StandardHostValve.java:349) [tomcat-embed-core-8.5.6.jar:8.5.6]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:175) [tomcat-embed-core-8.5.6.jar:8.5.6]
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) [tomcat-embed-core-8.5.6.jar:8.5.6]
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) [tomcat-embed-core-8.5.6.jar:8.5.6]
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349) [tomcat-embed-core-8.5.6.jar:8.5.6]
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:784) [tomcat-embed-core-8.5.6.jar:8.5.6]
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-8.5.6.jar:8.5.6]
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:802) [tomcat-embed-core-8.5.6.jar:8.5.6]
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1410) [tomcat-embed-core-8.5.6.jar:8.5.6]
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-8.5.6.jar:8.5.6]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_121]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_121]
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-8.5.6.jar:8.5.6]
    at java.lang.Thread.run(Thread.java:745) [na:1.8.0_121]
Caused by: org.springframework.web.multipart.MultipartException: Could not parse multipart servlet request; nested exception is java.lang.IllegalStateException: org.apache.tomcat.util.http.fileupload.FileUploadBase$SizeLimitExceededException: the request was rejected because its size (41464012) exceeds the configured maximum (10485760)
    at org.springframework.web.multipart.support.StandardMultipartHttpServletRequest.parseRequest(StandardMultipartHttpServletRequest.java:111) ~[spring-web-4.3.5.RELEASE.jar:4.3.5.RELEASE]
    at org.springframework.web.multipart.support.StandardMultipartHttpServletRequest.<init>(StandardMultipartHttpServletRequest.java:85) ~[spring-web-4.3.5.RELEASE.jar:4.3.5.RELEASE]
    at org.springframework.web.multipart.support.StandardServletMultipartResolver.resolveMultipart(StandardServletMultipartResolver.java:76) ~[spring-web-4.3.5.RELEASE.jar:4.3.5.RELEASE]
    at org.springframework.web.servlet.DispatcherServlet.checkMultipart(DispatcherServlet.java:1099) ~[spring-webmvc-4.3.5.RELEASE.jar:4.3.5.RELEASE]
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:932) ~[spring-webmvc-4.3.5.RELEASE.jar:4.3.5.RELEASE]
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897) ~[spring-webmvc-4.3.5.RELEASE.jar:4.3.5.RELEASE]
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970) ~[spring-webmvc-4.3.5.RELEASE.jar:4.3.5.RELEASE]
    ... 26 common frames omitted
Caused by: java.lang.IllegalStateException: org.apache.tomcat.util.http.fileupload.FileUploadBase$SizeLimitExceededException: the request was rejected because its size (41464012) exceeds the configured maximum (10485760)
    at org.apache.catalina.connector.Request.parseParts(Request.java:2871) ~[tomcat-embed-core-8.5.6.jar:8.5.6]
    at org.apache.catalina.connector.Request.parseParameters(Request.java:3176) ~[tomcat-embed-core-8.5.6.jar:8.5.6]
    at org.apache.catalina.connector.Request.getParameter(Request.java:1110) ~[tomcat-embed-core-8.5.6.jar:8.5.6]
    at org.apache.catalina.connector.RequestFacade.getParameter(RequestFacade.java:381) ~[tomcat-embed-core-8.5.6.jar:8.5.6]
    at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:70) ~[spring-web-4.3.5.RELEASE.jar:4.3.5.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.5.RELEASE.jar:4.3.5.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) ~[tomcat-embed-core-8.5.6.jar:8.5.6]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) ~[tomcat-embed-core-8.5.6.jar:8.5.6]
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197) ~[spring-web-4.3.5.RELEASE.jar:4.3.5.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.5.RELEASE.jar:4.3.5.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) ~[tomcat-embed-core-8.5.6.jar:8.5.6]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) ~[tomcat-embed-core-8.5.6.jar:8.5.6]
    at org.springframework.boot.actuate.autoconfigure.MetricsFilter.doFilterInternal(MetricsFilter.java:106) ~[spring-boot-actuator-1.4.3.RELEASE.jar:1.4.3.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.5.RELEASE.jar:4.3.5.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) ~[tomcat-embed-core-8.5.6.jar:8.5.6]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) ~[tomcat-embed-core-8.5.6.jar:8.5.6]
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198) ~[tomcat-embed-core-8.5.6.jar:8.5.6]
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:108) ~[tomcat-embed-core-8.5.6.jar:8.5.6]
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) ~[tomcat-embed-core-8.5.6.jar:8.5.6]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) [tomcat-embed-core-8.5.6.jar:8.5.6]
    ... 12 common frames omitted
Caused by: org.apache.tomcat.util.http.fileupload.FileUploadBase$SizeLimitExceededException: the request was rejected because its size (41464012) exceeds the configured maximum (10485760)
    at org.apache.tomcat.util.http.fileupload.FileUploadBase$FileItemIteratorImpl.<init>(FileUploadBase.java:811) ~[tomcat-embed-core-8.5.6.jar:8.5.6]
    at org.apache.tomcat.util.http.fileupload.FileUploadBase.getItemIterator(FileUploadBase.java:256) ~[tomcat-embed-core-8.5.6.jar:8.5.6]
    at org.apache.tomcat.util.http.fileupload.FileUploadBase.parseRequest(FileUploadBase.java:280) ~[tomcat-embed-core-8.5.6.jar:8.5.6]
    at org.apache.catalina.connector.Request.parseParts(Request.java:2801) ~[tomcat-embed-core-8.5.6.jar:8.5.6]
    ... 31 common frames omitted

If you need any other information, I would be happy to provide it to you.

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2 answers


I found that the exception you can handle is java.lang.IllegalStateException. FileUploadBase.FileSizeLimitExceededException.class is not thrown. Maybe because it is an inner class?

To do this, I also had to make changes to the Tomcat server.xml.

Tomcat's default behavior is to disconnect a client that is sending (downloading) too much data. After the connection is closed, you cannot send data back to the client.



You can tell Tomcat to continue reading the request even if the request has exceeded its size limit by adding maxSwallowSize = "-1"

to the connector in server.xml.

For a complete and detailed explanation of how to handle Exception in Spring, see: http://www.baeldung.com/spring-maxuploadsizeexceeded

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Try adding a method to your exception handler class as shown below:

@ExceptionHandler(MultipartException.class)
public String handleMultipartException(MultipartException e, RedirectAttributes redirectAttributes) {
    redirectAttributes.addFlashAttribute("message", e.getCause().getMessage());
    return "redirect:/uploadStatus";
}

You may have another page showing the loading status like this:



<html>
<body>
<h1>Upload Status</h1>
<h2>Message : ${message}</h2>
</body>
</html>

The same is given here with more details.

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