blobstore

问题 I'm migrating a site from IIS to GAE and am trying to batch upload a lot of images. Further to that particular challenge, I have one that concerns me more. All of the content for the site (stored in a DB) reference the images as such: http://myurl.com/images/some-folder/maybe-another-folder/image-name.jpg I have created a simple handler in Python to serve images: class ServeBlobs(blobstore_handlers.BlobstoreDownloadHandler): def get(self, resource): query = "where filename='%s'" % resource

问题 The following code works perfectly. My only concern is that I wanna convert below to AJAX/alternative, so that it doesn't need to refresh the whole page to submit this request. If possible, to also include loading progress bar etc. <form action="{{ upload_url }}" method="POST" enctype="multipart/form-data"> Upload File: <input type="file" name="file"> <br> <input type="submit" name="submit" value="Submit"> <input type="hidden" name="data1" value="{{ data1 }}"> <input type="hidden" name="data1

问题 I wrote a Google App Engine application that makes use of Blobstore to save programmatically-generated data. To do so, I used the Files API, which unfortunately has been deprecated in favor to Google Cloud Storage. So I'm rewriting my helper class to work with GCS. I'd like to keep the interface as similar as possible as it was before, also because I persist BlobKeys in the Datastore to keep references to the files (and changing the model of a production application is always painful). When i

问题 We have an app that servers a series of images from blobstore. An example is here: http://lh4.ggpht.com/f76xUkRZLRkb_Qz5uu82TX3LoBRh4eYb9hxYwMRMLCk5ghO_OL0DW2v4rRnkewUyDWfBuBttgbUvuJJXwtFQosEB=s0 It was a huge png, so this downloads at 536K. If we resize it to 400 across, it's still huge (263k): http://lh4.ggpht.com/f76xUkRZLRkb_Qz5uu82TX3LoBRh4eYb9hxYwMRMLCk5ghO_OL0DW2v4rRnkewUyDWfBuBttgbUvuJJXwtFQosEB=s400 How can we request or store the picture in some kind of better compression? We have a

问题 I'm programatically uploading image files and want to set the filename. When I upload a file via POST, the filename property is set automatically. However when using the method below, the filename is not getting set. image = urllib2.urlopen(url) file_name = files.blobstore.create(mime_type='image/png') with files.open(file_name, 'a') as f: f.write(image.read()) files.finalize(file_name) image_blob_key = files.blobstore.get_blob_key(file_name) 回答1: Parse the filename from the url (see related

问题 I'm programatically uploading image files and want to set the filename. When I upload a file via POST, the filename property is set automatically. However when using the method below, the filename is not getting set. image = urllib2.urlopen(url) file_name = files.blobstore.create(mime_type='image/png') with files.open(file_name, 'a') as f: f.write(image.read()) files.finalize(file_name) image_blob_key = files.blobstore.get_blob_key(file_name) 回答1: Parse the filename from the url (see related

问题 I'm using App Engine's high performance image serving on my site, and I'm able to get everything working properly on both my local machine and in production i.e. I can upload an image and successfully display the images using get_serving_url on the blob key. However, these images don't seem to persist on my development server, i.e. after I come back from a computer restart, the images no longer show up. The development server spits out: images_service_pb.ImagesServiceError.BAD_IMAGE_DATA

问题 I would like to know if is it possible to upload a photo in a appengine blobstore by using an end point ? If yes, please tell how or redirect to any available resource. If not, can you please expose any simple alternative : Using another library ? Using a standard servlet with other libraries ? 回答1: This post should be useful : serving blobstore image through app-engine endpoints api Please see another approach The Photofeed sample Java app. There is also a sample code . This app uses

问题 This is a server side question. I have a BlobKey and nothing else. How do I get the blob filename from said BlobKey? I know how to get the servingUrl as ServingUrlOptions options = ServingUrlOptions.Builder.withBlobKey(blobKey).secureUrl(false); String servingUrl = ImagesServiceFactory.getImagesService().getServingUrl(options); But how do I get the filename as saved/shown in Blob Viewer as for instance image_1.png ? I am using Java -- not python. 回答1: Use the BlobInfo class. BlobInfoFactory

问题 when I do the following the resulting image is null NSLog(@"string (%@) to base64NSData",object); NSData *base64Data = [[object dataUsingEncoding:NSUTF8StringEncoding] base64EncodedDataWithOptions:0]; NSLog(@"NSData (%@) to UIImage",base64Data); UIImage *image = [UIImage imageWithData:base64Data]; NSLog(@"my image is: %@",image); How might I do this well? Reason I need to save an image from iOS to the Google blobstore. I need to include some metadata with the image. When I encode the string