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サーバーからファイルをダウンロードする際に問題があります。それはこのようになります：1GB以上のファイルの場合Glassfish 3.1.2.2とOutOfMemoryError
response.reset();
response.setContentType("audio/vnd.wave");
File file = new File(filename);
FileInputStream stream = new FileInputStream(file);
long toWrite = file.length();
filename = filename.substring(filename.lastIndexOf(File.separator) + 1, filename.length());
response.setHeader("Content-disposition", "attachment; filename=\"" + filename + "\"");
//response.setHeader("Content-Length", String.valueOf(toWrite));
response.setContentLength((int)toWrite);
response.getOutputStream().flush();
response.flushBuffer();
//Files.copy(file.toPath(), response.getOutputStream());
byte data[] = new byte[1024*1024];
int len;
while ((len = stream.read(data)) > 0) {
response.getOutputStream().write(data, 0, len);
response.getOutputStream().flush();
response.flushBuffer();
toWrite -= len;
System.out.println("left="+toWrite+" "+w.getBufferSize()+" "+w.getBytes().length);
}
stream.close();
response.getOutputStream().flush();
response.getOutputStream().close();
context.responseComplete();
はそれが（この1つは1.4ギガバイト程度持っている）OOMEで終了します。ドメインの4GBのメモリを固定している
[#|2016-12-12T14:41:40.350+0100|INFO|glassfish3.1.2|javax.enterprise.system.std.com.sun.enterprise.server.logging|_ThreadID=99;_ThreadName=Thread-2;|left=389066752 8192 10737
41824|#]
[#|2016-12-12T14:41:41.237+0100|WARNING|glassfish3.1.2|javax.enterprise.resource.webcontainer.jsf.lifecycle|_ThreadID=99;_ThreadName=Thread-2;|#{showContractBean.downloadReco
rding(item2.recFile)}: java.lang.OutOfMemoryError: Java heap space
javax.faces.FacesException: #{showContractBean.downloadRecording(item2.recFile)}: java.lang.OutOfMemoryError: Java heap space
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:118)
at javax.faces.component.UICommand.broadcast(UICommand.java:315)
at javax.faces.component.UIData.broadcast(UIData.java:1093)
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:794)
at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1259)
at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1550)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:343)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217)
at org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:357)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:279)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:331)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
at com.sun.enterprise.v3.services.impl.ContainerMapper$AdapterCallable.call(ContainerMapper.java:317)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:195)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:860)
at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:757)
at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1056)
at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:229)
at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
at java.lang.Thread.run(Thread.java:745)
Caused by: javax.faces.el.EvaluationException: java.lang.OutOfMemoryError: Java heap space
at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:102)
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
... 37 more
Caused by: java.lang.OutOfMemoryError: Java heap space
at java.util.Arrays.copyOf(Arrays.java:2271)
at java.io.ByteArrayOutputStream.grow(ByteArrayOutputStream.java:118)
at java.io.ByteArrayOutputStream.ensureCapacity(ByteArrayOutputStream.java:93)
at java.io.ByteArrayOutputStream.write(ByteArrayOutputStream.java:153)
at org.apache.myfaces.webapp.filter.ExtensionsResponseWrapper$MyServletOutputStream.write(ExtensionsResponseWrapper.java:141)
at com.agreeya.telekonferencje.web.ShowContractBean.downloadRecording(ShowContractBean.java:1569)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at javax.el.BeanELResolver.invokeMethod(BeanELResolver.java:779)
at javax.el.BeanELResolver.invoke(BeanELResolver.java:528)
at javax.el.CompositeELResolver.invoke(CompositeELResolver.java:257)
at com.sun.el.parser.AstValue.invoke(AstValue.java:248)
at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:302)
at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88)
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
at javax.faces.component.UICommand.broadcast(UICommand.java:315)
at javax.faces.component.UIData.broadcast(UIData.java:1093)
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:794)
at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1259)
at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1550)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:343)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217)
at org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:357)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217)
Serverは、NewRatioが2に設定されています（デフォルト値）。
あなたは私がこれまで試した見ることができるように各後のGlassFish
2.小規模/大きなバッファ配列
3.フラッシュ応答と出力ストリームの
1.より多くのメモリをファイルに
4.ん。ContentLengthを書きますサイズ
5.ストリームを直接コピーします（FileStream - > OutputStream）
6. Content-Lengthをヘッダとして直接設定します。
運がない。出力はストリームされるべきですが、そうではありません。
私は何を試すべきですか？
GFを4にアップグレードすることはできません。私は賛成です。
||
EDIT
が最後にそれが期待どおりに動作します：FacesContext context = FacesContext.getCurrentInstance();
HttpServletResponse response = (HttpServletResponse) context.getExternalContext().getResponse();
ExtensionsResponseWrapper responseWrapper = (ExtensionsResponseWrapper)response;
HttpServletResponse delegateResponse = responseWrapper.getDelegate();
try {
response.reset();
response.setContentType("audio/vnd.wave");
File file = new File(filename);
long toWrite = file.length();
filename = filename.substring(filename.lastIndexOf(File.separator) + 1, filename.length());
response.setHeader("Content-disposition", "attachment; filename=\"" + filename + "\"");
response.setHeader("Content-Length", String.valueOf(toWrite));
response.setContentLength((int)toWrite);
ServletOutputStream out = delegateResponse.getOutputStream();
out.flush();
response.flushBuffer();
Files.copy(file.toPath(), out);
response.getOutputStream().flush();
response.getOutputStream().close();
context.responseComplete();
} catch (IOException ex) {
log.log(Level.SEVERE, ex.getMessage(), ex);
}
ByteArrayOutputStream.flush（）はノーオペレーションなので、ストリーミングする方法はありません。そして、私は[この投稿]（http://stackoverflow.com/questions/24505635/buffering-response-in-heap-space-cause-problems-for-large-files）が見つからなかった。お手伝いありがとう。 – 13Homer