If you want to read a file from the cloud storage, it works fine. but writing creates problem. have you solved this issue? If yes, please guide me.
On Thursday, August 18, 2011 10:05:20 PM UTC+8, André Salvati wrote: > > Hi, > > Maybe I've misunderstood docs, but I thought it was possible an > external application to integrate with App Engine by creating a file > in Blobstore. Am I doing something wrong?? Any way to accomplish > this?? > > > http://code.google.com/appengine/docs/java/blobstore/overview.html#Writing_Files_to_the_Blobstore > > > Thanks. > > Code: > > public class RemoteAPI { > > public static void main(String[] args) throws IOException { > > String username = "xx...@gmail.com <javascript:>"; > String password = "xxxxx"; > > > RemoteApiOptions options = new RemoteApiOptions() > .server("primepartes.appspot.com", 443) > .credentials(username, password); > RemoteApiInstaller installer = new RemoteApiInstaller(); > installer.install(options); > > FileService fileService = FileServiceFactory.getFileService(); > BlobstoreService blobstoreService = > BlobstoreServiceFactory.getBlobstoreService(); > > AppEngineFile file = fileService.createNewBlobFile("text/ > plain"); > > FileWriteChannel writeChannel = > fileService.openWriteChannel(file, true); > > PrintWriter out = new > PrintWriter(Channels.newWriter(writeChannel, "UTF8")); > out.println("The woods are lovely dark and deep."); > out.println("But I have promises to keep."); > > out.close(); > writeChannel.closeFinally(); // This line throwns the excepion > bellow > > .............. > > java.lang.IllegalStateException: The current request does not hold the > exclusive lock. > at > com.google.appengine.api.files.FileServiceImpl.close(FileServiceImpl.java: > 315) > at > com.google.appengine.api.files.FileWriteChannelImpl.closeFinally(FileWriteChannelImpl.java: > > > 78) > at br.com.teste.RemoteAPI.main(RemoteAPI.java:82) > > -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To view this discussion on the web visit https://groups.google.com/d/msg/google-appengine/-/skIJB5B76ZcJ. To post to this group, send email to google-appengine@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
