ブロブストアを使用する場合は、get_serving_url関数を使用してクライアントの URL から画像を読み取るか、ResourceContainer でmessages.ByteFieldを使用して画像を base64.b64decode でシリアル化します。
#the returned class
class Img(messages.Message):
message = messages.BytesField (1)
#The api class
@endpoints.api(name='helloImg', version='v1')
class HelloImgApi(remote.Service):
ID_RESOURCE = endpoints.ResourceContainer(
message_types.VoidMessage,
id=messages.StringField(1, variant=messages.Variant.STRING))
@endpoints.method(ID_RESOURCE, Img,
path='serveimage/{id}', http_method='GET', #ID is the blobstore key
name='greetings.getImage')
def image_get(self, request):
try:
blob_reader = blobstore.BlobReader(blob_key)
value = blob_reader.read()
return Img(message=value)
except:
raise endpoints.NotFoundException('image %s not found.' %
(request.id,))
APPLICATION = endpoints.api_server([HelloImgApi])
これが応答です (適切な形式でクライアントに保存します)。
{
"message": "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}
クライアントでこれを行うことができます(継続性のためにPythonで)
import base64
myFile = open("mock.jpg", "wb")
img = base64.b64decode(value) #value is the returned string
myFile.write(img)
myFile.close()