java - 如何在 Spring 中处理 MultipartException

标签 java tomcat spring-security spring-webflow-2

我的配置是here .

我根据那个帖子的回答做了一些修改。

过滤器多部分解析器

@Bean
public StandardServletMultipartResolver filterMultipartResolver() {
    return new StandardServletMultipartResolver();
}

AppInitializer

public class AppInitializer implements WebApplicationInitializer {

    @Override
    public void onStartup(final ServletContext servletContext) throws ServletException {
        // Create the 'root' Spring application context
        final WebApplicationContext context = getContext();
        // Manage the lifecycle of the root application context
        servletContext.addListener(new ContextLoaderListener(context));
        final Dynamic dispatcher = servletContext.addServlet("DispatcherServlet", new DispatcherServlet(context));
        dispatcher.setMultipartConfig(getMultipartConfigElement());
        dispatcher.setLoadOnStartup(1);
        dispatcher.addMapping("/");
    }

    private static AnnotationConfigWebApplicationContext getContext() {
        final AnnotationConfigWebApplicationContext context = new AnnotationConfigWebApplicationContext();
        context.register(AppConfig.class);
        return context;
    }

    private static MultipartConfigElement getMultipartConfigElement(){
        return new MultipartConfigElement(Props.FILE_TMP_DIRECTORY, 3 * 1024 * 1024, 3 * 1024 * 1024, 3 * 1024 * 1024);
    }
}

我遵循了 this post 的建议，并包含此 MultipartExceptionHandler

public class MultipartExceptionHandler extends OncePerRequestFilter {
    static final Logger log = LoggerFactory.getLogger(MultipartExceptionHandler.class);

    @Override
    protected void doFilterInternal(final HttpServletRequest request, final HttpServletResponse response, final FilterChain filterChain) throws ServletException, IOException {
        try {
            filterChain.doFilter(request, response);
        } catch (final MultipartException me) {
            log.error(me.getMessage());
            response.sendRedirect(UrlUtils.buildFullRequestUrl(request) + "&error=size-limit");
        }
    }
}

注册在

public class SecurityWebApplicationInitializer extends AbstractSecurityWebApplicationInitializer {

    @Override
    protected void beforeSpringSecurityFilterChain(final ServletContext servletContext) {
        insertFilters(servletContext, new MultipartExceptionHandler());
        insertFilters(servletContext, new MultipartFilter());
    }
}

当我尝试上传超过最大大小的文件时，这就是我在日志中得到的内容

DEBUG 2015-03-17 19:54:18,372: org.springframework.web.multipart.support.MultipartFilter - Using MultipartResolver 'filterMultipartResolver' for MultipartFilter
DEBUG 2015-03-17 19:54:18,372: org.springframework.beans.factory.support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'filterMultipartResolver'
DEBUG 2015-03-17 19:54:18,372: org.springframework.web.multipart.support.MultipartFilter - Resolving multipart request [/registrazione] with MultipartFilter
ERROR 2015-03-17 19:54:18,384: it.openex.pmfew.filters.MultipartExceptionHandler - Could not parse multipart servlet request; nested exception is java.lang.IllegalStateException: org.apache.tomcat.util.http.fileupload.FileUploadBase$SizeLimitExceededException: the request was rejected because its size (4522604) exceeds the configured maximum (3145728)
DEBUG 2015-03-17 19:54:18,386: org.springframework.web.multipart.support.MultipartFilter - Using MultipartResolver 'filterMultipartResolver' for MultipartFilter
DEBUG 2015-03-17 19:54:18,386: org.springframework.beans.factory.support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'filterMultipartResolver'
DEBUG 2015-03-17 19:54:18,386: org.springframework.web.multipart.support.MultipartFilter - Resolving multipart request [/registrazione] with MultipartFilter
ERROR 2015-03-17 19:54:18,386: it.openex.pmfew.filters.MultipartExceptionHandler - Could not parse multipart servlet request; nested exception is java.lang.IllegalStateException: org.apache.tomcat.util.http.fileupload.FileUploadBase$SizeLimitExceededException: the request was rejected because its size (4522604) exceeds the configured maximum (3145728)

它自己重复 7 次，并且过滤器中指定的重定向没有发生:我只是得到一个空白页面。

我不确定会发生什么，因为有时在过滤器中添加一个调试断点使其工作，甚至添加一个Thread.sleep(100)

更新1

有关此问题的更多信息。

每次我重新启动 Tomcat 时，过滤器都会被调用 2 次或 7 次。 只有一个 POST 调用。

chrome 中的响应是 (failed) net::ERR_CONNECTION_RESET。

请求是 org.apache.catalina.connector.RequestFacade 的实例，包含 org.apache.catalina.connector.Request 的实例。在后者中，属性 partsParseException 携带日志中显示的异常。 请求每次都是相同的。

链中有 4 个过滤器:

  • MultipartExceptionHandler(我添加的过滤器)
  • org.springframework.web.multipart.support.MultipartFilter
  • org.springframework.web.filter.DelegatingFilterProxy
  • org.apache.tomcat.websocket.server.WsFilter

我将 Tomcat 升级到最新版本:8.0.20。

我尝试重定向到像 / 这样的简单 url，并在过滤器中捕获所有类型的异常，包括可能由 catch block 抛出的异常。

结果是这样的

public class MultipartExceptionHandler extends OncePerRequestFilter {
    static final Logger log = LoggerFactory.getLogger(MultipartExceptionHandler.class);
    @Override
    protected void doFilterInternal(final HttpServletRequest request, final HttpServletResponse response, final FilterChain filterChain) throws ServletException, IOException {
        try {
            filterChain.doFilter(request, response);
        } catch (final MultipartException me) {
            try{
                log.error(me.getMessage());
                response.sendRedirect(UrlMap.HOME);
            } catch (final Exception e){
                log.error(e.getMessage());
            }

        }catch (final Exception e){
            log.error(e.getMessage());
        }
    }
}

令人不安的是，它似乎并没有确定性地运行:使用 Intellij Idea，有时如果我在 `MultipartExceptionHandler' 的 catch block 内放置一个断点，然后恢复程序，它会完美运行。

如果没有，我只需要重新启动 Tomcat 1 或 2 次，直到技巧再次起作用。

如果没有断点，程序将无法运行。

更新2

我对应用程序的行为进行了更多测试。

我发现它时不时地开箱即用，无需重新启动 Tomcat 或做任何花哨的事情。

重试上传文件直到成功，如果出现错误，请按下浏览器后退按钮返回上传页面。

4-5 次中有 1 次有效，没有任何明显的重复模式。

这是失败时的堆栈跟踪。在日志中，它连续重复了 2 次，之后没有其他内容。

INFO  2015-03-18 12:21:59,870: it.openex.pmfew.filters.MultipartExceptionHandler - #############################
INFO  2015-03-18 12:21:59,870: it.openex.pmfew.filters.MultipartExceptionHandler - /registrazione?execution=e3s2
INFO  2015-03-18 12:21:59,870: it.openex.pmfew.filters.MultipartExceptionHandler - #############################
DEBUG 2015-03-18 12:21:59,870: org.springframework.web.multipart.support.MultipartFilter - Using MultipartResolver 'filterMultipartResolver' for MultipartFilter
DEBUG 2015-03-18 12:21:59,870: org.springframework.beans.factory.support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'filterMultipartResolver'
DEBUG 2015-03-18 12:21:59,870: org.springframework.web.multipart.support.MultipartFilter - Resolving multipart request [/registrazione] with MultipartFilter
ERROR 2015-03-18 12:21:59,870: it.openex.pmfew.filters.MultipartExceptionHandler - Could not parse multipart servlet request; nested exception is java.lang.IllegalStateException: org.apache.tomcat.util.http.fileupload.FileUploadBase$SizeLimitExceededException: the request was rejected because its size (4522604) exceeds the configured maximum (3145728)
org.springframework.web.multipart.MultipartException: Could not parse multipart servlet request; nested exception is java.lang.IllegalStateException: org.apache.tomcat.util.http.fileupload.FileUploadBase$SizeLimitExceededException: the request was rejected because its size (4522604) exceeds the configured maximum (3145728)
    at org.springframework.web.multipart.support.StandardMultipartHttpServletRequest.parseRequest(StandardMultipartHttpServletRequest.java:99)
    at org.springframework.web.multipart.support.StandardMultipartHttpServletRequest.<init>(StandardMultipartHttpServletRequest.java:77)
    at org.springframework.web.multipart.support.StandardServletMultipartResolver.resolveMultipart(StandardServletMultipartResolver.java:76)
    at org.springframework.web.multipart.support.MultipartFilter.doFilterInternal(MultipartFilter.java:108)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at it.openex.pmfew.filters.MultipartExceptionHandler.doFilterInternal(MultipartExceptionHandler.java:29)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:516)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1086)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:659)
    at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:223)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1558)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1515)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.IllegalStateException: org.apache.tomcat.util.http.fileupload.FileUploadBase$SizeLimitExceededException: the request was rejected because its size (4522604) exceeds the configured maximum (3145728)
    at org.apache.catalina.connector.Request.parseParts(Request.java:2792)
    at org.apache.catalina.connector.Request.getParts(Request.java:2636)
    at org.apache.catalina.connector.RequestFacade.getParts(RequestFacade.java:1083)
    at org.springframework.web.multipart.support.StandardMultipartHttpServletRequest.parseRequest(StandardMultipartHttpServletRequest.java:84)
    ... 27 more
Caused by: org.apache.tomcat.util.http.fileupload.FileUploadBase$SizeLimitExceededException: the request was rejected because its size (4522604) exceeds the configured maximum (3145728)
    at org.apache.tomcat.util.http.fileupload.FileUploadBase$FileItemIteratorImpl.<init>(FileUploadBase.java:811)
    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:2725)
    ... 30 more

相反，如果一切顺利，堆栈跟踪只显示一次，然后附加(由于帖子的大小限制，我删除了一些部分)

INFO  2015-03-18 12:20:38,789: it.openex.pmfew.filters.MultipartExceptionHandler - #############################
INFO  2015-03-18 12:20:38,789: it.openex.pmfew.filters.MultipartExceptionHandler - Url called -> /registrazione?execution=e1s2&error=size-limit
INFO  2015-03-18 12:20:38,789: it.openex.pmfew.filters.MultipartExceptionHandler - #############################
DEBUG 2015-03-18 12:20:38,789: org.springframework.web.multipart.support.MultipartFilter - Using MultipartResolver 'filterMultipartResolver' for MultipartFilter
DEBUG 2015-03-18 12:20:38,789: org.springframework.beans.factory.support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'filterMultipartResolver'
DEBUG 2015-03-18 12:20:38,789: org.springframework.web.multipart.support.MultipartFilter - Request [/registrazione] is not a multipart request
DEBUG 2015-03-18 12:20:38,789: org.springframework.security.web.FilterChainProxy - /registrazione?execution=e1s2&error=size-limit at position 1 of 13 in additional filter chain; firing Filter: 'WebAsyncManagerIntegrationFilter'
DEBUG 2015-03-18 12:20:38,789: org.springframework.security.web.FilterChainProxy - /registrazione?execution=e1s2&error=size-limit at position 2 of 13 in additional filter chain; firing Filter: 'SecurityContextPersistenceFilter'
DEBUG 2015-03-18 12:20:38,789: org.springframework.security.web.context.HttpSessionSecurityContextRepository - No SecurityContext was available from the HttpSession: org.apache.catalina.session.StandardSessionFacade@2fabad6. A new one will be created.
DEBUG 2015-03-18 12:20:38,789: org.springframework.security.web.FilterChainProxy - /registrazione?execution=e1s2&error=size-limit at position 3 of 13 in additional filter chain; firing Filter: 'HeaderWriterFilter'
DEBUG 2015-03-18 12:20:38,789: org.springframework.security.web.FilterChainProxy - /registrazione?execution=e1s2&error=size-limit at position 4 of 13 in additional filter chain; firing Filter: 'CharacterEncodingFilter'
DEBUG 2015-03-18 12:20:38,789: org.springframework.security.web.FilterChainProxy - /registrazione?execution=e1s2&error=size-limit at position 5 of 13 in additional filter chain; firing Filter: 'CsrfFilter'
DEBUG 2015-03-18 12:20:38,789: org.springframework.security.web.FilterChainProxy - /registrazione?execution=e1s2&error=size-limit at position 6 of 13 in additional filter chain; firing Filter: 'LogoutFilter'
DEBUG 2015-03-18 12:20:38,789: org.springframework.security.web.FilterChainProxy - /registrazione?execution=e1s2&error=size-limit at position 7 of 13 in additional filter chain; firing Filter: 'UsernamePasswordAuthenticationFilter'
DEBUG 2015-03-18 12:20:38,789: org.springframework.security.web.FilterChainProxy - /registrazione?execution=e1s2&error=size-limit at position 8 of 13 in additional filter chain; firing Filter: 'RequestCacheAwareFilter'
DEBUG 2015-03-18 12:20:38,789: org.springframework.security.web.FilterChainProxy - /registrazione?execution=e1s2&error=size-limit at position 9 of 13 in additional filter chain; firing Filter: 'SecurityContextHolderAwareRequestFilter'
DEBUG 2015-03-18 12:20:38,789: org.springframework.security.web.FilterChainProxy - /registrazione?execution=e1s2&error=size-limit at position 10 of 13 in additional filter chain; firing Filter: 'AnonymousAuthenticationFilter'
DEBUG 2015-03-18 12:20:38,789: org.springframework.security.web.FilterChainProxy - /registrazione?execution=e1s2&error=size-limit at position 11 of 13 in additional filter chain; firing Filter: 'SessionManagementFilter'
DEBUG 2015-03-18 12:20:38,789: org.springframework.security.web.FilterChainProxy - /registrazione?execution=e1s2&error=size-limit at position 12 of 13 in additional filter chain; firing Filter: 'ExceptionTranslationFilter'
DEBUG 2015-03-18 12:20:38,789: org.springframework.security.web.FilterChainProxy - /registrazione?execution=e1s2&error=size-limit at position 13 of 13 in additional filter chain; firing Filter: 'FilterSecurityInterceptor'
DEBUG 2015-03-18 12:20:38,789: org.springframework.security.web.access.intercept.FilterSecurityInterceptor - Secure object: FilterInvocation: URL: /registrazione?execution=e1s2&error=size-limit; Attributes: [permitAll]
DEBUG 2015-03-18 12:20:38,789: org.springframework.security.web.FilterChainProxy - /registrazione?execution=e1s2&error=size-limit reached end of additional filter chain; proceeding with original chain
DEBUG 2015-03-18 12:20:38,789: org.springframework.web.servlet.DispatcherServlet - DispatcherServlet with name 'DispatcherServlet' processing GET request for [/registrazione]
DEBUG 2015-03-18 12:20:38,789: org.springframework.webflow.mvc.servlet.FlowHandlerMapping - Mapping request with URI '/registrazione' to flow with id 'registrazione'
DEBUG 2015-03-18 12:20:38,789: org.springframework.webflow.executor.FlowExecutorImpl - Resuming flow execution with key 'e1s2
DEBUG 2015-03-18 12:20:38,790: org.springframework.webflow.conversation.impl.SessionBindingConversationManager - Locking conversation 1
DEBUG 2015-03-18 12:20:38,790: org.springframework.webflow.execution.repository.impl.DefaultFlowExecutionRepository - Getting flow execution with key 'e1s2'
DEBUG 2015-03-18 12:20:38,790: org.springframework.webflow.definition.registry.FlowDefinitionRegistryImpl - Getting FlowDefinition with id 'registrazione'
DEBUG 2015-03-18 12:20:38,809: org.springframework.webflow.execution.repository.impl.DefaultFlowExecutionRepository - Putting flow execution '[FlowExecutionImpl@23da7555 flow = 'registrazione', flowSessions = list[[FlowSessionImpl@4c63c9fd flow = 'registrazione', state = 'companyLogo', scope = map['viewScope' -> map['fileForm' -> it.openex.pmcommonw.form.FileForm@ae6eeae], 'menuDTO' -> list[it.openex.pmfew.dtos.MenuEntryDTO@2fcdd386, it.openex.pmfew.dtos.MenuEntryDTO@3ba665a6, it.openex.pmfew.dtos.MenuEntryDTO@5767063d], 'userCompanyInfoForm' -> it.openex.pmcommonw.form.UserCompanyInfoForm@6ac911e1]]]]' into repository
DEBUG 2015-03-18 12:20:38,810: org.springframework.webflow.execution.repository.impl.DefaultFlowExecutionRepository - Adding snapshot to group with id 2
DEBUG 2015-03-18 12:20:38,813: org.springframework.webflow.conversation.impl.SessionBindingConversationManager - Unlocking conversation 1
DEBUG 2015-03-18 12:20:38,813: org.springframework.web.servlet.DispatcherServlet - Successfully completed request
DEBUG 2015-03-18 12:20:38,813: org.springframework.security.web.access.ExceptionTranslationFilter - Chain processed normally

更新3

到目前为止，我尝试上传一个 4.5MB 大的文件。

改用 30MB 的文件永远行不通。

更新4

查看 Chrome 开发者工具中的 POST 请求，在 Timing 选项卡上，我可以看到该请求已停止。 More info about this state.

Firefox 每次都能处理 4.5MB 的大文件，并正确重定向到错误页面。对于更大的文件(比如 7MB)它不起作用并且浏览器返回消息

The connection was reset

The connection to the server was reset while the page was loading.

更新5

在 MultipartExceptionHandler 行内切换

response.sendRedirect(UrlUtils.buildFullRequestUrl(request) + "&error=size-limit");

与

final RequestDispatcher requestDispatcher = request.getRequestDispatcher("/");
requestDispatcher.forward(request, response);

它在 Chrome 中 4 次中有 3 次有效，对于大文件，它总是像往常一样失败。日志中没有任何变化。

最佳答案

听起来像是多个请求。根据日志，发生异常时将调用 MultipartExceptionHandler。

Could not parse multipart servlet request; nested exception is java.lang.IllegalStateException: org.apache.tomcat.util.http.fileupload.FileUploadBase$SizeLimitExceededException:

也许你可以在protected void doFilterInternal(final HttpServletRequest request, final HttpServletResponse response, final FilterChain filterChain)之后添加一个logger，在这里设置一个断点并检查请求。由于

，请求可能为空或其他原因

Could not parse multipart servlet request; ... the request was rejected because its size ...

在这种情况下，UrlUtils.buildFullRequestUrl(request)也会抛出一个未被捕获的异常。

public final class UrlUtils {
    public static String buildFullRequestUrl(HttpServletRequest r) {
         return buildFullRequestUrl(r.getScheme(), r.getServerName(), r.getServerPort(), r.getRequestURI(),
                 r.getQueryString());
    }
...

尝试手动设置重定向 uri，如 response.sendRedirect(uri + "&error=size-limit")。这意味着响应不能为空。

尝试使用模拟请求和模拟异常为您的文件上传编写测试，并断言预期的重定向 uri。

关于java - 如何在 Spring 中处理 MultipartException，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/29107666/

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