java - 如何将 pdf 文件存储在谷歌云存储上？

Question

我正在使用 spring 和 google appengine，我尝试在我的应用程序上为所有用户存储 Pdf 文件但我找不到 GcsFile 的解决方案

你能帮帮我吗？

谢谢

代码:

GcsFileOptions options = new GcsFileOptions.Builder()
        .mimeType("application/pdf")
        .acl("public-read")
        .build();

GcsOutputChannel writeChannel = gcsService.createOrReplace(filename, options);

ServletFileUpload uploadGcs = new ServletFileUpload();
try

{
    byte[] bytes = ByteStreams.toByteArray(stream);
    try {
        writeChannel.write(ByteBuffer.wrap(bytes));
    } finally {
        writeChannel.close();
        stream.close();
    }
} catch (Exception e) {
    e.printStackTrace();
}

堆栈跟踪:

févr. 09, 2016 1:37:29 PM com.google.appengine.tools.cloudstorage.RetryHelper doRetry
INFOS: RetryHelper(94,66 ms, 1 attempts, com.google.appengine.tools.cloudstorage.GcsOutputChannelImpl$1@15fac57): Attempt #1 failed [java.io.IOException: java.lang.reflect.InvocationTargetException], sleeping for 279 ms
févr. 09, 2016 1:37:29 PM com.google.appengine.tools.cloudstorage.RetryHelper doRetry
INFOS: RetryHelper(395,3 ms, 2 attempts, com.google.appengine.tools.cloudstorage.GcsOutputChannelImpl$1@15fac57): Attempt #2 failed [java.io.IOException: java.lang.reflect.InvocationTargetException], sleeping for 390 ms
févr. 09, 2016 1:37:30 PM com.google.appengine.tools.cloudstorage.RetryHelper doRetry
INFOS: RetryHelper(786,2 ms, 3 attempts, com.google.appengine.tools.cloudstorage.GcsOutputChannelImpl$1@15fac57): Attempt #3 failed [java.io.IOException: java.lang.reflect.InvocationTargetException], sleeping for 778 ms
févr. 09, 2016 1:37:30 PM com.google.appengine.tools.cloudstorage.RetryHelper doRetry
INFOS: RetryHelper(1,566 s, 4 attempts, com.google.appengine.tools.cloudstorage.GcsOutputChannelImpl$1@15fac57): Attempt #4 failed [java.io.IOException: java.lang.reflect.InvocationTargetException], sleeping for 2226 ms
févr. 09, 2016 1:37:33 PM com.google.appengine.tools.cloudstorage.RetryHelper doRetry
INFOS: RetryHelper(3,796 s, 5 attempts, com.google.appengine.tools.cloudstorage.GcsOutputChannelImpl$1@15fac57): Attempt #5 failed [java.io.IOException: java.lang.reflect.InvocationTargetException], sleeping for 3772 ms
com.google.appengine.tools.cloudstorage.RetriesExhaustedException: RetryHelper(7,573 s, 6 attempts, com.google.appengine.tools.cloudstorage.GcsOutputChannelImpl$1@15fac57): Too many failures, giving up
    at com.google.appengine.tools.cloudstorage.RetryHelper.doRetry(RetryHelper.java:127)
    at com.google.appengine.tools.cloudstorage.RetryHelper.runWithRetries(RetryHelper.java:166)
    at com.google.appengine.tools.cloudstorage.RetryHelper.runWithRetries(RetryHelper.java:156)
    at com.google.appengine.tools.cloudstorage.GcsOutputChannelImpl.close(GcsOutputChannelImpl.java:198)
    at com.reservos.webapp.controller.BusinessController.uploadBusinessPhoto(BusinessController.java:1181)
    at com.reservos.webapp.controller.BusinessController$$FastClassByCGLIB$$92d8aa81.invoke(<generated>)
    at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
    at org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.java:689)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
    at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:622)
    at com.reservos.webapp.controller.BusinessController$$EnhancerByCGLIB$$3bda6d01.uploadBusinessPhoto(<generated>)
    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 com.google.appengine.tools.development.agent.runtime.Runtime.invoke(Runtime.java:115)
    at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:213)
    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:126)
    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578)
    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789)
    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$CachedChain.doFilter(ServletHandler.java:1166)
    at com.googlecode.objectify.ObjectifyFilter.doFilter(ObjectifyFilter.java:48)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    at com.google.appengine.api.socket.dev.DevSocketFilter.doFilter(DevSocketFilter.java:74)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    at com.google.appengine.tools.development.ResponseRewriterFilter.doFilter(ResponseRewriterFilter.java:127)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    at com.google.appengine.tools.development.HeaderVerificationFilter.doFilter(HeaderVerificationFilter.java:34)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    at com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:63)
    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 com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:125)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    at com.google.appengine.tools.development.DevAppServerModulesFilter.doDirectRequest(DevAppServerModulesFilter.java:366)
    at com.google.appengine.tools.development.DevAppServerModulesFilter.doDirectModuleRequest(DevAppServerModulesFilter.java:349)
    at com.google.appengine.tools.development.DevAppServerModulesFilter.doFilter(DevAppServerModulesFilter.java:116)
    at org.mortbay.jetty.servlet.ServletHandler$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.appengine.tools.development.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:98)
    at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
    at com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:491)
    at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
    at org.mortbay.jetty.Server.handle(Server.java:326)
    at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
    at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:938)
    at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:755)
    at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
    at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
    at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
    at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
Caused by: java.io.IOException: java.lang.reflect.InvocationTargetException
    at com.google.appengine.tools.cloudstorage.dev.LocalRawGcsService$BlobStorageAdapter.storeBlob(LocalRawGcsService.java:161)
    at com.google.appengine.tools.cloudstorage.dev.LocalRawGcsService.finishObjectCreation(LocalRawGcsService.java:336)
    at com.google.appengine.tools.cloudstorage.GcsOutputChannelImpl$1.call(GcsOutputChannelImpl.java:201)
    at com.google.appengine.tools.cloudstorage.GcsOutputChannelImpl$1.call(GcsOutputChannelImpl.java:198)
    at com.google.appengine.tools.cloudstorage.RetryHelper.doRetry(RetryHelper.java:108)
    ... 69 more
Caused by: java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at com.google.appengine.tools.development.agent.runtime.Runtime.invoke(Runtime.java:115)
    at com.google.appengine.tools.cloudstorage.dev.LocalRawGcsService$BlobStorageAdapter.storeBlob(LocalRawGcsService.java:153)
    ... 73 more
Caused by: java.security.AccessControlException: access denied ("java.io.FilePermission" "C:\dev\sourceir\trunk\src\main\webapp\WEB-INF\appengine-generated\encoded_gs_key:L2dzL2lyZXNlcnZvcy8xZjdkZGY4Zi02NTBmLTRkZjMtYjhkOC02MTUyZDFmZTkwZDYucGRm" "write")
    at java.security.AccessControlContext.checkPermission(AccessControlContext.java:372)
    at java.security.AccessController.checkPermission(AccessController.java:559)
    at java.lang.SecurityManager.checkPermission(SecurityManager.java:549)
    at com.google.appengine.tools.development.DevAppServerFactory$CustomSecurityManager.checkPermission(DevAppServerFactory.java:429)
    at java.lang.SecurityManager.checkWrite(SecurityManager.java:979)
    at java.io.FileOutputStream.<init>(FileOutputStream.java:209)
    at java.io.FileOutputStream.<init>(FileOutputStream.java:171)
    at com.google.appengine.api.blobstore.dev.FileBlobStorage.storeBlob(FileBlobStorage.java:46)
    ... 79 more
Hibernate: insert into tbu1218 (businessid, picKey, typePic) values (?, ?, ?)
TRACE: org.hibernate.type.descriptor.sql.BasicBinder - binding parameter [1] as [BIGINT] - 172
TRACE: org.hibernate.type.descriptor.sql.BasicBinder - binding parameter [2] as [VARCHAR] - 1f7ddf8f-650f-4df3-b8d8-6152d1fe90d6.pdf
TRACE: org.hibernate.type.descriptor.sql.BasicBinder - binding parameter [3] as [VARCHAR] - profile
com.google.appengine.api.datastore.EntityNotFoundException: No entity was found matching the key: BusinessSearch(172)
    at com.google.appengine.api.datastore.DatastoreServiceImpl.get(DatastoreServiceImpl.java:58)
    at com.reservos.webapp.controller.BusinessController.uploadBusinessPhoto(BusinessController.java:1198)
    at com.reservos.webapp.controller.BusinessController$$FastClassByCGLIB$$92d8aa81.invoke(<generated>)
    at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
    at org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.java:689)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
    at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:622)
    at com.reservos.webapp.controller.BusinessController$$EnhancerByCGLIB$$3bda6d01.uploadBusinessPhoto(<generated>)
    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 com.google.appengine.tools.development.agent.runtime.Runtime.invoke(Runtime.java:115)
    at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:213)
    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:126)
    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578)
    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789)
    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$CachedChain.doFilter(ServletHandler.java:1166)
    at com.googlecode.objectify.ObjectifyFilter.doFilter(ObjectifyFilter.java:48)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    at com.google.appengine.api.socket.dev.DevSocketFilter.doFilter(DevSocketFilter.java:74)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    at com.google.appengine.tools.development.ResponseRewriterFilter.doFilter(ResponseRewriterFilter.java:127)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    at com.google.appengine.tools.development.HeaderVerificationFilter.doFilter(HeaderVerificationFilter.java:34)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    at com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:63)
    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 com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:125)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    at com.google.appengine.tools.development.DevAppServerModulesFilter.doDirectRequest(DevAppServerModulesFilter.java:366)
    at com.google.appengine.tools.development.DevAppServerModulesFilter.doDirectModuleRequest(DevAppServerModulesFilter.java:349)
    at com.google.appengine.tools.development.DevAppServerModulesFilter.doFilter(DevAppServerModulesFilter.java:116)
    at org.mortbay.jetty.servlet.ServletHandler$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.appengine.tools.development.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:98)
    at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
    at com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:491)
    at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
    at org.mortbay.jetty.Server.handle(Server.java:326)
    at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
    at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:938)
    at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:755)
    at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
    at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
    at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
    at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)

Answer 1

如果你在 live 系统上的错误真的是这个样子

java.security.AccessControlException: access denied ("java.io.FilePermission" "C:\dev\sourceir\trunk\src\main\webapp\WEB-INF\appengine-generated\encoded_gs_key:L2dzL2lyZXNlcnZvcy8xZjdkZGY4Zi02NTBmLTRkZjMtYjhkOC02MTUyZDFmZTkwZDYucGRm" "write")

你正在做一些严重错误的事情。但我假设问题实际上是您使用了无效的 filename。因此，请检查您尝试写入的存储桶是否存在以及您的应用程序是否可写。 GcsFilename 应如下所示:

GcsFilename newGcsFilename = new GcsFilename("bucketname", filePathDestination);

如果您想使用默认存储桶，存储桶名称将与您的应用引擎 ID (yourappengine-id.appspot.com) 相同。请仔细检查该存储桶是否存在于 developers console 中.

如果默认存储桶不存在(这显然是至少在我所有项目中的默认存储桶):

1. 打开appengine.google.com
2. 选择您的项目
3. 转到应用程序设置和
4. 向下滚动到标题为Cloud Integration 的标题。
5. 应该有一个按钮可以自动为您在云存储中创建默认存储桶。