在GAE blobstore java中创建文件

在我的应用程序中，我有一个字符串，它是一个文件内容。我需要在blobstore中创建包含此内容的新文件。我试着像这样使用文件API：

    FileService fileService = FileServiceFactory.getFileService();
    AppEngineFile file = fileService.createNewBlobFile("text/plain");
    FileWriteChannel writeChannel = fileService.openWriteChannel(file, true);

    writeChannel.write(ByteBuffer.wrap(content.getBytes()));
    writeChannel.closeFinally();
    BlobKey blobKey = fileService.getBlobKey(file);
    res.sendRedirect("/serve?blob-key=" + blobKey);

但由于文件API已弃用，我只收到以下错误：

HTTP ERROR 500

Problem accessing /create_timetable. Reason:

The Files API is disabled. Further information: https://cloud.google.com/appengine/docs/deprecations/files_api
Caused by:

com.google.apphosting.api.ApiProxy$FeatureNotEnabledException: The Files API is disabled. Further information: https://cloud.google.com/appengine/docs/deprecations/files_api
at com.google.appengine.tools.development.ApiProxyLocalImpl$AsyncApiCall.callInternal(ApiProxyLocalImpl.java:515)
at com.google.appengine.tools.development.ApiProxyLocalImpl$AsyncApiCall.call(ApiProxyLocalImpl.java:484)
at com.google.appengine.tools.development.ApiProxyLocalImpl$AsyncApiCall.call(ApiProxyLocalImpl.java:461)
at java.util.concurrent.Executors$PrivilegedCallable$1.run(Executors.java:533)
at java.security.AccessController.doPrivileged(Native Method)
at java.util.concurrent.Executors$PrivilegedCallable.call(Executors.java:530)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
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)

我如何在blobstore中手动创建文件，因为用户只将数据内容作为字符串提供给我，而不是文件本身，所以我不能使用您应该写入的

。
文件API是，并且Blobstore API是正确的
不提供直接写入的编程方式

稍后，您可以使用谷歌云存储自己的API或
您还可以使用BlobStoreAPI通过BlobKey为其执行此操作

private BlobKey saveFile(String gcsBucket, String fileName,
        String content) throws IOException {
    GcsFilename gcsFileName = new GcsFilename(gcsBucket, fileName);
    GcsOutputChannel outputChannel =
            gcsService.createOrReplace(gcsFileName, GcsFileOptions.getDefaultInstance());
    outputChannel.write(ByteBuffer.wrap(content.getBytes()));
    outputChannel.close();

    return blobstoreService.createGsBlobKey(
            "/gs/" + gcsFileName.getBucketName() + "/" + gcsFileName.getObjectName());
}