Question

我刚刚迁移到HRD，现在告诉我我无法访问自己的blob ......

Uncaught exception from servlet
java.lang.SecurityException: This application does not have access to that blob.
at com.google.appengine.api.blobstore.BlobstoreServiceImpl.fetchData(BlobstoreServiceImpl.java:200)
at com.droidastic.telljokes.server.servlet.ServeBlobsServlet.checkBlobKeyExists(ServeBlobsServlet.java:100)
at com.droidastic.telljokes.server.servlet.ServeBlobsServlet.doGet(ServeBlobsServlet.java:64)

我将密钥存储为数据存储区实体中的字符串，然后我创建它们：

BlobKey key = new BlobKey(this.params.blobKey);

我如何恢复斑点？

Answer 1

我找到了解决方案：

public String getMigratedBlobKey(String oldKey) {
  String migrationEntityKey = "__BlobMigration__";
  Key createKey = KeyFactory.createKey(migrationEntityKey, oldKey);
  Entity migrationEntity = datastore.get(createKey);
  BlobKey newKey = (BlobKey) migrationEntity.getProperty("new_blob_key");
  return newKey.getKeyString();
}

"__BlobMigration__" and "new_blob_key" are GAE constants.

如何在迁移到HRD后恢复Blob

1 个答案: