我正在使用HTTP Web请求，响应获取url响应，这是来自jenkins服务器的exe。使用Filestream读取响应并将其存储在本地驱动器中。当响应是连续的时，我可以成功下载并安装exe.File大小下载是> 400MB
问题场景：有时读取会发生超时，并且会抛出异常。响应读取器也读取异常并存储在文件中。
例外：
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Stack trace
java.io.IOException: java.util.concurrent.TimeoutException: Idle timeout expired: 5000/5000 ms
at org.eclipse.jetty.util.SharedBlockingCallback$Blocker.block(SharedBlockingCallback.java:234)
at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:141)
at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:355)
at org.kohsuke.stapler.Stapler.serveStaticResource(Stapler.java:585)
at org.kohsuke.stapler.ResponseImpl.serveFile(ResponseImpl.java:216)
at hudson.model.DirectoryBrowserSupport.serveFile(DirectoryBrowserSupport.java:319)
at hudson.model.DirectoryBrowserSupport.generateResponse(DirectoryBrowserSupport.java:127)
at org.kohsuke.stapler.HttpResponseRenderer$Default.handleHttpResponse(HttpResponseRenderer.java:124)
at org.kohsuke.stapler.HttpResponseRenderer$Default.generateResponse(HttpResponseRenderer.java:69)
at org.kohsuke.stapler.Function.renderResponse(Function.java:127)
at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:110)
at org.kohsuke.stapler.MetaClass$1.doDispatch(MetaClass.java:124)
at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:58)
at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:746)
at org.kohsuke.stapler.Stapler.invoke(Stapler.java:876)
at org.kohsuke.stapler.MetaClass$10.dispatch(MetaClass.java:362)
at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:746)
at org.kohsuke.stapler.Stapler.invoke(Stapler.java:876)
at org.kohsuke.stapler.MetaClass$5.doDispatch(MetaClass.java:236)
at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:58)
at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:746)
at org.kohsuke.stapler.Stapler.invoke(Stapler.java:876)
at org.kohsuke.stapler.Stapler.invoke(Stapler.java:649)
at org.kohsuke.stapler.Stapler.service(Stapler.java:238)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:812)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669)
at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:135)
at org.jenkinsci.plugins.ssegateway.Endpoint$SSEListenChannelFilter.doFilter(Endpoint.java:225)
at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:132)
at io.jenkins.blueocean.ResourceCacheControl.doFilter(ResourceCacheControl.java:134)
at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:132)
at jenkins.metrics.impl.MetricsFilter.doFilter(MetricsFilter.java:125)
at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:132)
at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:126)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:86)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:84)
at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:76)
at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:171)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
at org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:49)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:82)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
at org.kohsuke.stapler.DiagnosticThreadNameFilter.doFilter(DiagnosticThreadNameFilter.java:30)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:553)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
at org.eclipse.jetty.server.Server.handle(Server.java:499)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:311)
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:544)
at winstone.BoundedExecutorService$1.run(BoundedExecutorService.java:77)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.util.concurrent.TimeoutException: Idle timeout expired: 5000/5000 ms
at org.eclipse.jetty.io.IdleTimeout.checkIdleTimeout(IdleTimeout.java:161)
at org.eclipse.jetty.io.IdleTimeout$1.run(IdleTimeout.java:50)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
... 3 more
如何避免读取异常字节，以便我可以再次继续下载其余字节。
这是我的逻辑：
try
{
long iFileSize = 0;
int iBufferSize = 1024;
iBufferSize *= 1000;
long iExistLen = 0;
if (System.IO.File.Exists(path))
{
System.IO.FileInfo fINfo =
new System.IO.FileInfo(path);
iExistLen = fINfo.Length;
}
if (iExistLen > 0)
saveFileStream = new System.IO.FileStream(path,
System.IO.FileMode.Append, System.IO.FileAccess.Write,
System.IO.FileShare.None);
else
saveFileStream = new System.IO.FileStream(path,
System.IO.FileMode.Create, System.IO.FileAccess.Write,
System.IO.FileShare.None);
HttpWebRequest hwRq1 =(HttpWebRequest)System.Net.HttpWebRequest.Create(urlAddress);
hwRq1.AddRange((int)iExistLen);
using (HttpWebResponse hwRes=(System.Net.HttpWebResponse)hwRq1.GetResponse())
{
using (System.IO.Stream smRespStream = hwRes.GetResponseStream())
{
smRespStream.ReadTimeout = 60000;
iFileSize = hwRes.ContentLength;
int iByteSize;
byte[] downBuffer = new byte[iBufferSize];
while ((iByteSize = smRespStream.Read(downBuffer, 0, downBuffer.Length)) > 0)
{
saveFileStream.Write(downBuffer, 0, iByteSize);
Console.WriteLine(iExistLen.ToString());
}
saveFileStream.Close();
smRespStream.Close();
if (iByteSize == 0 && !FileSizeCheck(path, softwareWithSize.Value))
return new Tuple<string, bool>("Zero byte received", false);
}
}
答案 0 :(得分：1)
你怎么意识到有错误？如果你不能 - 即来自jenkins的流只是exe字节，然后是错误，接着是socket关闭..那么你将不得不检查你所拥有的文件是否存在一些不会改变的合适的ascii。也许搜索“java.io.IOException”，然后重新填充5000字节，在那时关闭文件并从那里恢复
虽然jenkins家伙的形式有点糟糕，但如果它真的有效，那么这将是我第一次听说开发人员认为在内容中发送错误消息字节是个好主意下载流。你确定它没有像一个编程错误的代理服务器那样被一些中间件垃圾插入吗？