gwtupload : java.lang.RuntimeException:请求被拒绝，因为服务器已经在接收其他文件

Question

我使用gwtupload插件在GWT中开发了多个文件上传。它在调试模式下工作得很好。我创建了war，并从jboss-as-7.1.1.Final开始。如果我上传一个文件，它的工作正常，但当我选择其他文件上传它的抛出和错误。

java.lang.RuntimeException: The request has been rejected because the server is already receiving another file.这里是我的服务器日志。现在如何解决这个错误呢？

16:22:52,147 INFO  [gwtupload.server.UploadListener] (http--0.0.0.0-8081-6) UploadListener  created new instance. (slow=200, requestSize=4672140)
16:22:59,361 SEVERE [gwtupload.server.UploadServlet] (http--0.0.0.0-8081-4) UPLOAD-SERVLET (pB19zxemUC3i-3tAQt5G+SzE.undefined) The request has been rejected because the server is already receiving another file.
16:22:59,549 INFO  [gwtupload.server.UploadListener] (http--0.0.0.0-8081-6) UploadListener pB19zxemUC3i-3tAQt5G+SzE.undefined The upload has been canceled after 139137 bytes received, raising an exception (RuntimeException) to close the socket
16:22:59,690 SEVERE [gwtupload.server.UploadServlet] (http--0.0.0.0-8081-6) UPLOAD-SERVLET (pB19zxemUC3i-3tAQt5G+SzE.undefined) Unexpected Exception -> The request has been rejected because the server is already receiving another file.
java.lang.RuntimeException: The request has been rejected because the server is already receiving another file.
    at gwtupload.server.UploadAction.doPost(UploadAction.java:200)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:754)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)
    at com.nextenders.server.ExceptionHandler.doFilter(ExceptionHandler.java:28)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)
    at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:66)
    at com.google.inject.servlet.ManagedFilterPipeline.dispatch(ManagedFilterPipeline.java:118)
    at com.google.inject.servlet.GuiceFilter.doFilter(GuiceFilter.java:113)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161)
    at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:153)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930)
    at java.lang.Thread.run(Unknown Source)

16:22:59,713 INFO  [gwtupload.server.UploadServlet] (http--0.0.0.0-8081-6) Unknown Exception when receiving a file.: gwtupload.server.exceptions.UploadException: java.lang.RuntimeException: The request has been rejected because the server is already receiving another file.
    at gwtupload.server.UploadServlet.parsePostRequest(UploadServlet.java:985) [gwtupload-custom.jar:]
    at gwtupload.server.UploadAction.doPost(UploadAction.java:178) [gwtupload-custom.jar:]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:754) [jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) [jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329) [jbossweb-7.0.13.Final.jar:]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.13.Final.jar:]
    at com.nextenders.server.ExceptionHandler.doFilter(ExceptionHandler.java:28) [classes:]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280) [jbossweb-7.0.13.Final.jar:]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.13.Final.jar:]
    at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:66) [guice-servlet-3.0.jar:]
    at com.google.inject.servlet.ManagedFilterPipeline.dispatch(ManagedFilterPipeline.java:118) [guice-servlet-3.0.jar:]
    at com.google.inject.servlet.GuiceFilter.doFilter(GuiceFilter.java:113) [guice-servlet-3.0.jar:]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280) [jbossweb-7.0.13.Final.jar:]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.13.Final.jar:]
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275) [jbossweb-7.0.13.Final.jar:]
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161) [jbossweb-7.0.13.Final.jar:]
    at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:153) [jboss-as-web-7.1.1.Final.jar:7.1.1.Final]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155) [jbossweb-7.0.13.Final.jar:]
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) [jbossweb-7.0.13.Final.jar:]
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) [jbossweb-7.0.13.Final.jar:]
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368) [jbossweb-7.0.13.Final.jar:]
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877) [jbossweb-7.0.13.Final.jar:]
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671) [jbossweb-7.0.13.Final.jar:]
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930) [jbossweb-7.0.13.Final.jar:]
    at java.lang.Thread.run(Unknown Source) [rt.jar:1.6.0_25]
Caused by: java.lang.RuntimeException: The request has been rejected because the server is already receiving another file.
    at gwtupload.server.UploadAction.doPost(UploadAction.java:200) [gwtupload-custom.jar:]
    ... 23 more

Answer 1

出现这种情况是因为servlet中使用的前一个侦听器尚未从内存中删除。通常情况下，如果浏览器中有多个选项卡实例，或者在上传文件时重新加载应用程序，就会发生这种情况。请稍候，然后重试。

我从来没有在我的项目中使用过jboss，所以在它的servlet容器中可能会有问题，尽管它使用的tomcat与gwtupload配合得很好。

如果你可以在一个简单的项目中隔离问题，这可以再现问题总是，张贴它，以便我可以看一看和调试。