Java 从服务url构造blobkey_Java_Google App Engine_Blobstore

Java 从服务url构造blobkey

java google-app-engine

Java 从服务url构造blobkey,java,google-app-engine,blobstore,Java,Google App Engine,Blobstore,给定一个BlobKey，我知道如何获取服务URL ServingUrlOptions options = ServingUrlOptions.Builder .withBlobKey(blobKey) .secureUrl(false); String servingUrl = ImagesServiceFactory.getImagesService() .getServingUrl(options); 如果给我servingUrl，有没有办法构造BlobKey？所以

给定一个

BlobKey

，我知道如何获取服务URL

ServingUrlOptions options = ServingUrlOptions.Builder
    .withBlobKey(blobKey)
    .secureUrl(false);
String servingUrl = ImagesServiceFactory.getImagesService()
    .getServingUrl(options);

如果给我

servingUrl

，有没有办法构造BlobKey？所以基本上是相反的

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