Google cloud storage 如何使用java将文件和图像放入google cloudstorage

我第一次尝试使用谷歌云存储

我只是遵循文章中给出的步骤

我已按照以下步骤操作

我在xyz.com域中创建了一个应用程序，我的应用程序的服务帐户名为“myapp@appspot.gserviceaccount.com“

然后，我转到GoogleAPI控制台上的“团队”选项卡，并尝试将我的应用程序的服务帐户名称添加到激活GoogleCloud Storage的项目中

它已成功添加，但状态待定。我如何将状态更改为活动状态。当我运行我的项目时，我得到

Uncaught exception from servlet
java.io.IOException
at com.google.appengine.api.files.FileServiceImpl.translateException(FileServiceImpl.java:620)
at com.google.appengine.api.files.FileServiceImpl.makeSyncCall(FileServiceImpl.java:593)
at com.google.appengine.api.files.FileServiceImpl.create(FileServiceImpl.java:511)
at com.google.appengine.api.files.FileServiceImpl.createNewGSFile(FileServiceImpl.java:155)
at com.cloudcodes.com.TestBucket.doGet(TestBucket.java:34)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
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$CachedChain.doFilter(ServletHandler.java:1166)
at com.google.apphosting.utils.servlet.ParseBlobUploadFilter.doFilter(ParseBlobUploadFilter.java:125)
at org.mortbay.jetty.servlet.ServletHandler$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:439)
at com.google.tracing.TraceContext$TraceContextRunnable.runInContext(TraceContext.java:446)
at com.google.tracing.TraceContext$TraceContextRunnable$1.run(TraceContext.java:453)
at com.google.tracing.TraceContext.runInContext(TraceContext.java:740)
at com.google.tracing.TraceContext$DoInTraceContext.runInContext(TraceContext.java:717)
at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java:308)
at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContext(TraceContext.java:300)
at com.google.tracing.TraceContext$TraceContextRunnable.run(TraceContext.java:450)
at com.google.apphosting.runtime.ThreadGroupPool$PoolEntry.run(ThreadGroupPool.java:251)
at java.lang.Thread.run(Thread.java:722)

Caused by: com.google.apphosting.api.ApiProxy$ApplicationException: ApplicationError: 8: 
at java.lang.Thread.getStackTrace(Thread.java:1567)
at com.google.apphosting.runtime.ApiProxyImpl.doSyncCall(ApiProxyImpl.java:259)
at com.google.apphosting.runtime.ApiProxyImpl.access$000(ApiProxyImpl.java:68)
at com.google.apphosting.runtime.ApiProxyImpl$1.run(ApiProxyImpl.java:202)
at com.google.apphosting.runtime.ApiProxyImpl$1.run(ApiProxyImpl.java:199)
at java.security.AccessController.doPrivileged(Native Method)
at com.google.apphosting.runtime.ApiProxyImpl.makeSyncCall(ApiProxyImpl.java:199)
at com.google.apphosting.runtime.ApiProxyImpl.makeSyncCall(ApiProxyImpl.java:68)
at com.google.apphosting.api.ApiProxy.makeSyncCall(ApiProxy.java:107)
at com.google.apphosting.api.ApiProxy.makeSyncCall(ApiProxy.java:56)
at com.google.appengine.api.files.FileServiceImpl.makeSyncCall(FileServiceImpl.java:589)

---

有人能帮我吗？

你能发布你的代码吗？你启用了计费吗？在我的项目中，我启用了cloudsql计费，但我没有启用cloudstorage计费，因为我找不到任何启用cloudstorage计费的选项。如何启用cloudstorage计费也请告诉我