從OncePerRequestFilter（Java + Spring）拋出與net :: ERR_CONNECTION_REFUSED不同的錯誤

Question

我可以選擇將文件上傳到應用程序中，我已經使用springframework設置了文件大小的限制

在我的應用程序上下文文件中

<bean id="multipartResolver"
   class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
    <!-- max upload size in bytes -->
    <property name="maxUploadSize" value="41943040" /> <!-- 40MB -->
        <!-- max size of file in memory (in bytes) -->
    <property name="maxInMemorySize" value="1048576" /> <!-- 1MB -->

</bean>

我有一個名為CORSFilter的類， 它擴展了OncePerRequestFilter

doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException {
 .... more code

catch(NestedServletException err){
            if(err.getRootCause() instanceof MaxUploadSizeExceededException) {
                        response.setStatus(418, StringUtil.getGson().toJson("File must be smaller than" +  " 40MB"));
                response.getWriter().flush();
                response.getWriter().close();
                throw err;
            }else {
                throw err;
            }
        }

現在，如果我在關閉后立即用網絡流量檢查響應，我知道響應具有此狀態-但是當我在春季某個地方關閉后讓它“運行”時，網絡錯誤/狀態將被重置，最終我得到什么凈額：ERR_CONNECTION_REFUSED

我嘗試使用這種方法

@ExceptionHandler(NestedServletException.class)
@ResponseBody
public UIException handleValidationException(NotValidException ve, HttpServletResponse httpServletResponse) {
    LOG.debug(ve.getMessage(), ve);
    return new UIException(ve);
}

但是它並沒有在那里停止

完整的堆棧跟蹤已附加：

    org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.springframework.web.multipart.MaxUploadSizeExceededException: Maximum upload size of 41943040 bytes exceeded; nested exception is org.apache.commons.fileupload.FileUploadBase$SizeLimitExceededException: the request was rejected because its size (53990195) exceeds the configured maximum (41943040)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:982)
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
    at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:821)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1685)
    at com.amazonaws.xray.javax.servlet.AWSXRayServletFilter.doFilter(AWSXRayServletFilter.java:151)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1668)
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1668)
    at com.myCompany.web.filter.MultiReadServletFilter.doFilterInternal(MultiReadServletFilter.java:52)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1668)
    at com.myCompany.web.filter.CORSFilter.doFilterInternal(CORSFilter.java:78)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1668)
    at com.samaxes.filter.NoCacheFilter.doFilter(NoCacheFilter.java:65)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1668)
    at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:581)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
    at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548)
    at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:226)
    at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1158)
    at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:511)
    at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
    at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1090)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:119)
    at org.eclipse.jetty.server.Server.handle(Server.java:517)
    at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:308)
    at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:242)
    at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:261)
    at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:95)
    at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:75)
    at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceAndRun(ExecuteProduceConsume.java:213)
    at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:147)
    at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:654)
    at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:572)
    at java.lang.Thread.run(Thread.java:748)
Caused by: org.springframework.web.multipart.MaxUploadSizeExceededException: Maximum upload size of 41943040 bytes exceeded; nested exception is org.apache.commons.fileupload.FileUploadBase$SizeLimitExceededException: the request was rejected because its size (53990195) exceeds the configured maximum (41943040)
    at org.springframework.web.multipart.commons.CommonsMultipartResolver.parseRequest(CommonsMultipartResolver.java:162)
    at org.springframework.web.multipart.commons.CommonsMultipartResolver.resolveMultipart(CommonsMultipartResolver.java:142)
    at org.springframework.web.servlet.DispatcherServlet.checkMultipart(DispatcherServlet.java:1099)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:932)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
    ... 40 more
Caused by: org.apache.commons.fileupload.FileUploadBase$SizeLimitExceededException: the request was rejected because its size (53990195) exceeds the configured maximum (41943040)
    at org.apache.commons.fileupload.FileUploadBase$FileItemIteratorImpl.<init>(FileUploadBase.java:965)
    at org.apache.commons.fileupload.FileUploadBase.getItemIterator(FileUploadBase.java:310)
    at org.apache.commons.fileupload.FileUploadBase.parseRequest(FileUploadBase.java:334)
    at org.apache.commons.fileupload.servlet.ServletFileUpload.parseRequest(ServletFileUpload.java:115)
    at org.springframework.web.multipart.commons.CommonsMultipartResolver.parseRequest(CommonsMultipartResolver.java:158)
    ... 45 more

如何獲得網絡狀態響應的錯誤(418/file size limit)狀態，而不是“ ERR_CONNECTION_REFUSED”

Answer 1

從這里取

如果您嘗試上傳的文件大小超出了大小限制，則Tomcat會將其裁剪為默認的2mb並重置連接。 要快速解決，請將maxSwallowSize設置為-1（無限制）

可能的解決方案：

2. 理念
3. 1嘗試為文件上傳設置合理的限制，例如，在此示例中為11mb（11 x 1024 x 1024 =字節）

Tomcat/conf/server.xml
    <Connector port="8080" protocol="HTTP/1.1"
               connectionTimeout="20000"
               redirectPort="8443"
               maxSwallowSize="11534336" />

2.2並使用Javascript在上傳之前檢查文件大小。

那碼頭呢？ 經過Jetty 9測試，無法找到任何maxSwallowSize設置，並且如果文件大小超過了上傳限制，也不會導致連接重置。