Question

我以以下格式将对象存储在Google云端存储中

bucketname/UUID/object

我有一个java方法，它以以下格式返回下载链接，以查看文件

https://storage.googleapis.com/bucket/uuid/object?GoogleAccessId

现在，我想做的是编写一个Java方法，在出现图像的情况下将调整对象的大小。这些是我的方法。

    public String getResizedImage(String bucketName, String uuid, Integer size) {
    GcsFilename gcsFilename = new GcsFilename(bucketName, getFileName(bucketName, uuid));
    ImagesService is = ImagesServiceFactory.getImagesService();
    String filename = String.format("/gs/%s/%s", gcsFilename.getBucketName(), gcsFilename.getObjectName());
    return is.getServingUrl(ServingUrlOptions.Builder.withGoogleStorageFileName(filename).imageSize(size).crop(true));
    }

    public String getFileName(String bucketName, String uuid) {
    final String[] fileName = {null};
    Page<Blob> blobs = storage.list(bucketName, BlobListOption.prefix(uuid));
    blobs.iterateAll().forEach(
        blob -> fileName[0] = blob.getName()//.substring(blob.getName().lastIndexOf('/') + 1)
    );
    return fileName[0];
    }

但是，当我测试getResizedImage(String bucketName, String uuid, Integer size)时，它会引发以下错误。

com.google.apphosting.api.ApiProxy$CallNotFoundException: Can't make API call blobstore.CreateEncodedGoogleStorageKey in a thread that is neither the original request thread nor a thread created by ThreadManager

at com.google.apphosting.api.ApiProxy$CallNotFoundException.foreignThread(ApiProxy.java:800)
at com.google.apphosting.api.ApiProxy.makeSyncCall(ApiProxy.java:112)
at com.google.apphosting.api.ApiProxy.makeSyncCall(ApiProxy.java:65)
at com.google.appengine.api.blobstore.BlobstoreServiceImpl.createGsBlobKey(BlobstoreServiceImpl.java:312)
at com.google.appengine.api.images.ImagesServiceImpl.getServingUrl(ImagesServiceImpl.java:266)
at service.GoogleCloudStorage.getResizedImage(GoogleCloudStorage.java:240)
at operationstest.GoogleCloudOperationsTest.testDownloadLinkGenerationAfterResize(GoogleCloudOperationsTest.java:64)

错误发生在

return is.getServingUrl(ServingUrlOptions.Builder.withGoogleStorageFileName(filename).imageSize(size).crop(true));

我不知道是什么原因造成的。真的可以使用一些帮助。

编辑：我的解决方案尝试基于此answer。

将getServingUrl（）方法与Google Cloud Storage一起使用会引发错误

0 个答案: