上传从谷歌App Engine的文件到Amazon S3的结果异常 [英] Uploading file from Google App Engine to Amazon S3 results in exception

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本文介绍了上传从谷歌App Engine的文件到Amazon S3的结果异常的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我的工作gwt2.4，jre7和GAE 1.7.3.in发展方式我的code正常工作，但是当我上传我的应用程序在App Engine我收到以下错误比

i am working on gwt2.4, jre7 and GAE 1.7.3.in development mode my code working properly but when i uploaded my apps on app engine than i am getting following error

 java.lang.ExceptionInInitializerError
at com.amazonaws.services.s3.AmazonS3Client.<init>(AmazonS3Client.java:277)
at com.wa.gwtamazon.server.UploadServiceImpl.amazonConfig(UploadServiceImpl.java:124)
at com.wa.gwtamazon.server.UploadServiceImpl.doPost(UploadServiceImpl.java:76)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
at com.google.apphosting.utils.servlet.ParseBlobUploadFilter.doFilter(ParseBlobUploadFilter.java:100)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.apphosting.runtime.jetty.SaveSessionFilter.doFilter(SaveSessionFilter.java:35)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.handle(AppVersionHandlerMap.java:266)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923)
at com.google.apphosting.runtime.jetty.RpcRequestParser.parseAvailable(RpcRequestParser.java:76)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:146)
at com.google.apphosting.runtime.JavaRuntime$RequestRunnable.run(JavaRuntime.java:447)
at com.google.tracing.TraceContext$TraceContextRunnable.runInContext(TraceContext.java:454)
at com.google.tracing.TraceContext$TraceContextRunnable$1.run(TraceContext.java:461)
at com.google.tracing.TraceContext.runInContext(TraceContext.java:703)
at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java:338)
at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContext(TraceContext.java:330)
at com.google.tracing.TraceContext$TraceContextRunnable.run(TraceContext.java:458)
at com.google.apphosting.runtime.ThreadGroupPool$PoolEntry.run(ThreadGroupPool.java:251)
at java.lang.Thread.run(Thread.java:679)


Nested in java.lang.ExceptionInInitializerError:
java.lang.NullPointerException
at com.amazonaws.util.VersionInfoUtils.initializeUserAgent(VersionInfoUtils.java:124)
at com.amazonaws.util.VersionInfoUtils.getUserAgent(VersionInfoUtils.java:86)
at com.amazonaws.ClientConfiguration.<clinit>(ClientConfiguration.java:31)
at com.amazonaws.services.s3.AmazonS3Client.<init>(AmazonS3Client.java:277)
at com.wa.gwtamazon.server.AmazonService.uploadFileToAmazone(AmazonService.java:50)
at com.wa.gwtamazon.server.AmazonService.doPost(AmazonService.java:36)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
at com.google.apphosting.utils.servlet.ParseBlobUploadFilter.doFilter(ParseBlobUploadFilter.java:100)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.apphosting.runtime.jetty.SaveSessionFilter.doFilter(SaveSessionFilter.java:35)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.handle(AppVersionHandlerMap.java:266)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923)
at com.google.apphosting.runtime.jetty.RpcRequestParser.parseAvailable(RpcRequestParser.java:76)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:146)
at com.google.apphosting.runtime.JavaRuntime$RequestRunnable.run(JavaRuntime.java:447)
at com.google.tracing.TraceContext$TraceContextRunnable.runInContext(TraceContext.java:454)
at com.google.tracing.TraceContext$TraceContextRunnable$1.run(TraceContext.java:461)
at com.google.tracing.TraceContext.runInContext(TraceContext.java:703)
at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java:338)
at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContext(TraceContext.java:330)
at com.google.tracing.TraceContext$TraceContextRunnable.run(TraceContext.java:458)
at com.google.apphosting.runtime.ThreadGroupPool$PoolEntry.run(ThreadGroupPool.java:251)
at java.lang.Thread.run(Thread.java:679)

我也是找出以下链接解决方案，但它仍然没有工作

i am also find out solution on following link but still it didn't works

（ HTTP：//$c$c.google .COM / P / googleappengine /问题/详细信息？ID = 8166 ）

推荐答案

//编辑：他还说了下面的XML到他的 AppEngine上-web.xml中来得到它的工作

// He added the following XML to his appengine-web.xml to get it work:

<system-properties> 
    <property name="java.util.logging.config.file" value="WEB-INF/logging.properties"/> 
    <property name="os.name" value="Linux" /> 
    <property name="os.version" value="6.1" /> 
    <property name="java.vm.name" value="Java HotSpot(TM) Client VM" /> 
    <property name="java.vm.version" value="23.5-b02" /> 
    <property name="user.language" value="en" /> 
    <property name="user.region" value="us" /> 
</system-properties>

您不能使用的，因为在谷歌应用程序引擎的限制亚马逊利布斯（没有线程，...）。 但也有一些解决方案，可以帮助你：

You can't use the Amazon Libs because of restrictions in the Google App Engine (no Threads, ...). But there are few solutions that should help you:

[1] http://socialappdev.com /使用-亚马逊S3与 - 谷歌 - 应用程序 - 发动机02-2011

[2] https://github.com/handstandtech/s3-simple-appengine

你为什么不使用谷歌云存储用的 GAE的Java SDK ？地面站API是几乎相同的S3中的API。

Why don't you use Google Cloud Storage with the GAE Java SDK? The GCS API is almost the same as the S3 API.

这篇关于上传从谷歌App Engine的文件到Amazon S3的结果异常的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！

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