image 包提供图片服务。
函数
func DeleteServingURL
DeleteServingURL 会删除图像的提供网址。
func ServingURL
func ServingURL(c context.Context, key appengine.BlobKey, opts *ServingURLOptions) (*url.URL, error)ServingURL 会返回将使用 Blobstore 提供图像的网址。
ServingURLOptions
type ServingURLOptions struct {
Secure bool // whether the URL should use HTTPS
// Size must be between zero and 1600.
// If Size is non-zero, a resized version of the image is served,
// and Size is the served image's longest dimension. The aspect ratio is preserved.
// If Crop is true the image is cropped from the center instead of being resized.
Size int
Crop bool
}