Question

我有一个页面使用rich：fileUpload来上传文件。对于较小的文件，这可以正常工作，但是对于较大的文件（+ 80MB），我通常会得到一个ViewExpiredException。我已经尝试过寻找解决方案，但我找不到任何可以解决这个问题的方法。

Richfaces 3.3.3.3
Tomcat 6.0.20
Spring 2.5.6
JSF 1.2_14

pagebean：

@Component
@Scope("request")
public class Bean {
    ...
}

jspx：

<?xml version="1.0" encoding="UTF-8" ?>
<jsp:root omit-xml-declaration="true"
xmlns:jsp="http://java.sun.com/JSP/Page"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:t="http://myfaces.apache.org/tomahawk"
xmlns:a4j="https://ajax4jsf.dev.java.net/ajax"
xmlns:rich="http://richfaces.ajax4jsf.org/rich"
xmlns:ui="http://java.sun.com/jsf/facelets" version="2.0">
<rich:panel styleClass="formPanel">
    <h:form id="docForm">
        <ui:param name="doc" value="#{pb.newDoc}" />
    <h:panelGrid columns="2" columnClasses="formTableLabel, formTableField">
        ...
        <h:outputLabel for="fileUpload" value="#{labels['file']}*" />
    <h:panelGroup>
        <rich:fileUpload required="true" ajaxSingle="true"
            fileUploadListener="#{pb.uploadDocument}" id="fileUpload"
        autoclear="false" immediateUpload="true" noDuplicate="true"
        addControlLabel="#{labels['browse']}">
        <a4j:support event="onclear" reRender="fileUpload" ajaxSingle="true"
                oncomplete="$('docForm:fileUpload').component.currentInput.enable()"/>
        </rich:fileUpload>
        <h:message for="fileUpload" styleClass="errorMessage"
            showDetail="false" showSummary="true" />
    </h:panelGroup>
    ...

web.xml：

...
<context-param>
    <param-name>javax.faces.STATE_SAVING_METHOD</param-name>
    <param-value>server</param-value>
</context-param>
<context-param>
    <param-name>facelets.SKIP_COMMENTS</param-name>
    <param-value>true</param-value>
</context-param>
<context-param>
    <param-name>facelets.BUFFER_SIZE</param-name>
    <param-value>500000</param-value>
</context-param>
<context-param>
    <param-name>org.richfaces.LoadScriptStrategy</param-name>
    <param-value>ALL</param-value>
</context-param>
<context-param>
    <param-name>org.richfaces.LoadStyleStrategy</param-name>
    <param-value>ALL</param-value>
</context-param>
<context-param>
    <param-name>javax.faces.DEFAULT_SUFFIX</param-name>
    <param-value>.jspx</param-value>
</context-param>
<context-param>
    <description>
        Context parameter specifically for facelets, lists available tag libraries.
    </description>
    <param-name>facelets.LIBRARIES</param-name>
    <param-value>
        /WEB-INF/taglibs/authorization.taglib.xml;
        /WEB-INF/taglibs/taskscreen.taglib.xml
    </param-value>
</context-param>
<context-param>
    <param-name>javax.faces.CONFIG_FILES</param-name>
    <param-value>/WEB-INF/config/faces-config.xml</param-value>
</context-param>
<context-param>
    <param-name>org.ajax4jsf.VIEW_HANDLERS</param-name>
    <param-value>com.sun.facelets.FaceletViewHandler</param-value>
</context-param>
<filter>
    <display-name>RichFaces Filter</display-name>
    <filter-name>richfaces</filter-name>
    <filter-class>org.ajax4jsf.Filter</filter-class>
    <init-param>
        <param-name>forceparser</param-name>
        <param-value>false</param-value>
    </init-param>
</filter>
<filter-mapping>
    <filter-name>Pretty Filter</filter-name>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>
<filter-mapping>
    <filter-name>richfaces</filter-name>
    <servlet-name>FacesServlet</servlet-name>
    <dispatcher>REQUEST</dispatcher>
    <dispatcher>FORWARD</dispatcher>
    <dispatcher>INCLUDE</dispatcher>
</filter-mapping>
<welcome-file-list>
    <welcome-file>start/start.jspx</welcome-file>
</welcome-file-list>
<error-page>
    <error-code>500</error-code>
    <location>/error.jspx</location>
</error-page>
<error-page>
    <error-code>403</error-code>
    <location>/access-denied.jspx</location>
</error-page>
<error-page>
    <exception-type>javax.faces.application.ViewExpiredException</exception-type>
    <location>/expired.jsf</location>
</error-page>
<session-config>
    <session-timeout>30</session-timeout>
</session-config>
...

stacktrace：

SEVERE: JSF1054: (Phase ID: RESTORE_VIEW 1, View ID: ) Exception thrown during phase execution:   javax.faces.event.PhaseEvent[source=com.sun.faces.lifecycle.LifecycleImpl@22075431]
2012-09-13 16:43:46,945 [qtp130437654-18] ERROR org.ajax4jsf.webapp.BaseXMLFilter  doXmlFilter - Exception in the filter chain
javax.servlet.ServletException: viewId:/data/includes/doc.jspx - View /data/includes/doc.jspx could not be restored.
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:270)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:521)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1207)
at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:206)
at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)
at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:367)
at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:515)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1178)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:433)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:118)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:490)
at org.eclipse.jetty.server.session.SessionHandler.handle(SessionHandler.java:179)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:928)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:370)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:862)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:116)
at org.eclipse.jetty.server.Dispatcher.forward(Dispatcher.java:331)
at org.eclipse.jetty.server.Dispatcher.forward(Dispatcher.java:115)
at com.ocpsoft.pretty.PrettyFilter.doFilter(PrettyFilter.java:64)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1178)
at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:378)
at org.springframework.security.intercept.web.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:109)
at org.springframework.security.intercept.web.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83)
at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
at org.springframework.security.ui.SessionFixationProtectionFilter.doFilterHttp(SessionFixationProtectionFilter.java:67)
at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
at org.springframework.security.ui.ExceptionTranslationFilter.doFilterHttp(ExceptionTranslationFilter.java:101)
at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
at org.springframework.security.wrapper.SecurityContextHolderAwareRequestFilter.doFilterHttp(SecurityContextHolderAwareRequestFilter.java:91)
at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
at org.springframework.security.ui.AbstractProcessingFilter.doFilterHttp(AbstractProcessingFilter.java:278)
at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
at org.jasig.cas.client.session.SingleSignOutFilter.doFilter(SingleSignOutFilter.java:110)
at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
at org.springframework.security.ui.logout.LogoutFilter.doFilterHttp(LogoutFilter.java:89)
at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
at org.springframework.security.context.HttpSessionContextIntegrationFilter.doFilterHttp(HttpSessionContextIntegrationFilter.java:235)
at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
at org.springframework.security.util.FilterChainProxy.doFilter(FilterChainProxy.java:175)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:236)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1178)
at com.doc.filter.IEFilter.doFilter(IEFilter.java:33)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1178)
at com.doc.portal.filter.ExceptionRedirectFilter.doFilter(ExceptionRedirectFilter.java:28)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1178)
at org.jasig.cas.client.session.SingleSignOutFilter.doFilter(SingleSignOutFilter.java:110)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1178)
at com.doc.filter.UTF8Filter.doFilter(UTF8Filter.java:20)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1178)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:433)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:118)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:456)
at org.eclipse.jetty.server.session.SessionHandler.handle(SessionHandler.java:179)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:928)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:370)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:862)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:116)
at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:126)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:115)
at org.eclipse.jetty.server.Server.handle(Server.java:330)
at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:557)
at org.eclipse.jetty.server.HttpConnection$RequestHandler.content(HttpConnection.java:947)
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:736)
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:203)
at org.eclipse.jetty.server.HttpConnection.handle(HttpConnection.java:413)
at org.eclipse.jetty.server.bio.SocketConnector$Connection.run(SocketConnector.java:229)
at org.eclipse.jetty.server.ssl.SslSocketConnector$SslConnection.run(SslSocketConnector.java:648)
at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:435)
at java.lang.Thread.run(Thread.java:662)
Caused by: javax.faces.application.ViewExpiredException: viewId:/data/includes/doc.jspx - View /data/includes/doc.jspx could not be restored.
at com.sun.faces.lifecycle.RestoreViewPhase.execute(RestoreViewPhase.java:189)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
at com.sun.faces.lifecycle.RestoreViewPhase.doPhase(RestoreViewPhase.java:102)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:265)
... 75 more

有人有任何想法如何解决这个问题？ THX。

Answer 1

这可能不是您想听到的，但标准HTTP协议在上传大文件时效果不佳。通常，在对等套接字应用程序中，客户端和服务器都可以保持连接运行状况，并在大型传输期间保持一切活动。然而，使用HTTP和Web，客户端通常拥有的唯一有状态的是它的cookie。客户端无法知道其cookie是否仍然有效（更正：除非它们明确设置为在特定日期到期），直到将它们提供给服务器并获得结果的响应。

因此，服务器需要在会话的生命周期上施加时间轴，并且在该时间过去之后，它将丢弃会话的有状态信息。由于典型的互联网连接上传速度往往比下载速度慢一些，因此在等待大文件上传时会话失效并不常见。

您有三种选择：

您在服务器上增加会话超时到期时间。也许这会给你足够的时间。
您使用了富客户端界面（Flash，Applet，Silverlight等），您可以通过网页上传文件来利用此富客户端。这样做的好处是，您可以将大文件分解为可管理的二进制块，并使用您的会话cookie一次一个地将它们发送到服务器。这些成功的块请求中的每一个都将具有在整个传输过程中保持会话活动的效果。收到最终块后，您的服务器可以重新组合您的大文件并保留它。
除了利用HTML5和JS的强大功能外，与＃2基本相同。以下是一个开源Javascript库，它利用HTML5技术将大文件分解成块并协助在服务器上重新组装它们。 http://steffentchr.dk/post/7454042318/resumable-js这种方法的一些缺点是，由于它使用HTML5，它只适用于现代浏览器，因此对IE7等旧版浏览器的支持是值得怀疑的。

关于第3点的另一个注意事项是，在自定义或复合JSF组件中包含此Javascript代码的可能性超出了允许您在客户端和服务器之间实现更简化的接口。

另请参阅以下问题：Upload of very large files

richfaces fileupload ViewExpiredException

1 个答案: