am getting the same error "java.lang.IllegalArgumentException:
INVALID_BLOB_KEY: Could not read blob.
at
com.google.appengine.api.images.ImagesServiceImpl.getServingUrl(ImagesServiceImpl.java:282)
"
i want to return the image url
here's the code
public List<String> blobstore_method(HttpServletRequest request) throws
IOException{
Map<String, List<BlobKey>> blobs = blobstoreService.getUploads(request);
List<BlobKey> blobKeys = blobs.get("myFile");
image_urls = null;
if (blobKeys == null || blobKeys.isEmpty()) {
response.sendRedirect("/");
} else {
response.sendRedirect("/notice.jsp");
System.out.println("submited");
}
for(BlobKey obj : blobKeys){
obj.getKeyString();
//blobstore image
com.google.appengine.api.images.ImagesService services =
ImagesServiceFactory.getImagesService();
ServingUrlOptions serve =
ServingUrlOptions.Builder.withGoogleStorageFileName("/gs/"+obj.getKeyString());
// Blobkey of the image uploaded to BlobStore.
image_urls.add(services.getServingUrl(serve));
}
return image_urls;
}
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