Jsf 怎样才能'；我从InternetExplorer8中的iframe下载了一个PDF文件

我想从iframe下载一个PDF文件，它在Google chrome和firefox中工作，但在Internet explorer中不工作

这是我的密码

public void downloadSubscriptionDocument(SessionObject object) {
    Document dt = getBlobCode(object);
    if (dt != null && dt.getData() != null) {
        final FacesContext fContext = FacesContext.getCurrentInstance();
        ExternalContext eContext = null;
        if (fContext != null && dt != null) {
            eContext = fContext.getExternalContext();

            if (eContext != null) {

                final HttpServletResponse response = (HttpServletResponse) eContext.getResponse();

                response.setContentType("application/pdf");
                response.addHeader("content-disposition", "attachment; filename=" + "BulletinAdhesion" + ".pdf");
                if (dt != null && dt.getData() != null) {
                    response.addHeader("Content-Length", String.valueOf(dt.getData().length));
                }

                try {
                    final ServletOutputStream sos = response.getOutputStream();
                    sos.write(dt.getData());
                    sos.flush();
                    sos.close();
                    fContext.responseComplete();
                } catch (final Exception ex) {
                    LOGGER.log(Level.SEVERE, ex.getMessage());
                }
            }
        }
    }
    else {
        Locale locale = new Locale("fr");
        this.addMessageError(ResourceBundle.getBundle("messages", locale).getString("eu.spb.afflelou.pdv.ba.not.found"));
        return ;
    }
}

我在控制台中有这个异常

Servlet] - 2019-12-04 10:30:29,289 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[default-host].[/spb-extranet-afflelou-pdv].[Faces Servlet]] (ajp-/10.7.2.55 {s2jbossrecex.spb.eu} :8809-3) JBWEB000236: Servlet.service() for servlet Faces Servlet threw exception: java.lang.IllegalStateException: JBWEB000028: getOutputStream() has already been called for this response
at org.apache.catalina.connector.Response.getWriter(Response.java:621) [jbossweb-7.5.30.Final-redhat-1.jar:7.5.30.Final-redhat-1]
at org.apache.catalina.connector.ResponseFacade.getWriter(ResponseFacade.java:191) [jbossweb-7.5.30.Final-redhat-1.jar:7.5.30.Final-redhat-1]
at com.sun.faces.context.ExternalContextImpl.getResponseOutputWriter(ExternalContextImpl.java:778) [jsf-impl-2.1.28.SP11-redhat-1.jar:2.1.28.SP11-redhat-1]
at javax.faces.context.ExternalContextWrapper.getResponseOutputWriter(ExternalContextWrapper.java:669) [jboss-jsf-api_2.1_spec-2.1.28.SP2-redhat-1.jar:2.1.28.SP2-redhat-1]
at com.sun.faces.application.view.FaceletViewHandlingStrategy.createResponseWriter(FaceletViewHandlingStrategy.java:1110) [jsf-impl-2.1.28.SP11-redhat-1.jar:2.1.28.SP11-redhat-1]
at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:399) [jsf-impl-2.1.28.SP11-redhat-1.jar:2.1.28.SP11-redhat-1]
at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:125) [jsf-impl-2.1.28.SP11-redhat-1.jar:2.1.28.SP11-redhat-1]
at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:286) [jboss-jsf-api_2.1_spec-2.1.28.SP2-redhat-1.jar:2.1.28.SP2-redhat-1]
at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:286) [jboss-jsf-api_2.1_spec-2.1.28.SP2-redhat-1.jar:2.1.28.SP2-redhat-1]
at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:286) [jboss-jsf-api_2.1_spec-2.1.28.SP2-redhat-1.jar:2.1.28.SP2-redhat-1]
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120) [jsf-impl-2.1.28.SP11-redhat-1.jar:2.1.28.SP11-redhat-1]
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) [jsf-impl-2.1.28.SP11-redhat-1.jar:2.1.28.SP11-redhat-1]
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139) [jsf-impl-2.1.28.SP11-redhat-1.jar:2.1.28.SP11-redhat-1]
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:594) [jboss-jsf-api_2.1_spec-2.1.28.SP2-redhat-1.jar:2.1.28.SP2-redhat-1]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:295) [jbossweb-7.5.30.Final-redhat-1.jar:7.5.30.Final-redhat-1]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214) [jbossweb-7.5.30.Final-redhat-1.jar:7.5.30.Final-redhat-1]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:231) [jbossweb-7.5.30.Final-redhat-1.jar:7.5.30.Final-redhat-1]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:149) [jbossweb-7.5.30.Final-redhat-1.jar:7.5.30.Final-redhat-1]
at org.jboss.modcluster.container.jbossweb.JBossWebContext$RequestListenerValve.event(JBossWebContext.java:91)
at org.jboss.modcluster.container.jbossweb.JBossWebContext$RequestListenerValve.invoke(JBossWebContext.java:72)
at org.jboss.as.web.security.SubjectInfoSetupValve.invoke(SubjectInfoSetupValve.java:34) [jboss-as-web-7.5.22.Final-redhat-1.jar:7.5.22.Final-redhat-1]
at org.jboss.as.web.session.ClusteredSessionValve.handleRequest(ClusteredSessionValve.java:134) [jboss-as-web-7.5.22.Final-redhat-1.jar:7.5.22.Final-redhat-1]
at org.jboss.as.web.session.ClusteredSessionValve.invoke(ClusteredSessionValve.java:99) [jboss-as-web-7.5.22.Final-redhat-1.jar:7.5.22.Final-redhat-1]
at org.jboss.as.web.session.JvmRouteValve.invoke(JvmRouteValve.java:95) [jboss-as-web-7.5.22.Final-redhat-1.jar:7.5.22.Final-redhat-1]
at org.jboss.as.web.session.LockingValve.invoke(LockingValve.java:64) [jboss-as-web-7.5.22.Final-redhat-1.jar:7.5.22.Final-redhat-1]
at org.jboss.as.jpa.interceptor.WebNonTxEmCloserValve.invoke(WebNonTxEmCloserValve.java:50) [jboss-as-jpa-7.5.22.Final-redhat-1.jar:7.5.22.Final-redhat-1]
at org.jboss.as.jpa.interceptor.WebNonTxEmCloserValve.invoke(WebNonTxEmCloserValve.java:50) [jboss-as-jpa-7.5.22.Final-redhat-1.jar:7.5.22.Final-redhat-1]
at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:169) [jboss-as-web-7.5.22.Final-redhat-1.jar:7.5.22.Final-redhat-1]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:151) [jbossweb-7.5.30.Final-redhat-1.jar:7.5.30.Final-redhat-1]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:97) [jbossweb-7.5.30.Final-redhat-1.jar:7.5.30.Final-redhat-1]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:102) [jbossweb-7.5.30.Final-redhat-1.jar:7.5.30.Final-redhat-1]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:97) [jbossweb-7.5.30.Final-redhat-1.jar:7.5.30.Final-redhat-1]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [jbossweb-7.5.30.Final-redhat-1.jar:7.5.30.Final-redhat-1]
at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:490) [jbossweb-7.5.30.Final-redhat-1.jar:7.5.30.Final-redhat-1]
at org.apache.coyote.ajp.AjpProtocol$AjpConnectionHandler.process(AjpProtocol.java:422) [jbossweb-7.5.30.Final-redhat-1.jar:7.5.30.Final-redhat-1]
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:926) [jbossweb-7.5.30.Final-redhat-1.jar:7.5.30.Final-redhat-1]

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您忘了包括堆栈跟踪的其余部分，它解释了代码是如何进入这种状态的。您是指XHTML文件吗？嗯。。。。好的，谢谢你，我更新了这个问题好的，

org.apache.catalina.valves.ErrorReportValve.invoke的出现表明它试图显示一个错误页面，但显然无法显示。这反过来表明编写PDF失败了。您真的密切关注服务器日志了吗？很可能通过
LOGGER.log（Level.SEVERE，例如getMessage（））记录了一些内容。你对我的第一条评论的误解强烈表明你不知道异常是如何工作的。我强烈建议用抛出新的FacesException（ex）
替换整个记录器行。它应该以更清晰的错误报告结束。