func QiniuImageFilter(ctx *context.Context) { var imageName = path.Base(ctx.Request.RequestURI) var imageKey string var imageSize string if i := strings.IndexRune(imageName, '.'); i == -1 { return } else { imageSize = imageName[i+1:] if j := strings.IndexRune(imageSize, '.'); j == -1 { imageSize = "full" } else { imageSize = imageSize[:j] } imageKey = imageName[:i] } var image = models.Image{ Token: imageKey, } err := image.Read("Token") if err != nil { return } var imageWidth = image.Width var imageHeight = image.Height var zoomRatio = setting.ImageSizeMiddle / imageWidth if imageWidth > setting.ImageSizeMiddle { imageWidth = setting.ImageSizeMiddle } imageHeight *= zoomRatio var imageUrl = utils.GetQiniuPublicDownloadUrl(setting.QiniuPostDomain, imageKey) var zoomImageUrl = utils.GetQiniuZoomViewUrl(imageUrl, imageWidth, imageHeight) resp, err := http.Get(zoomImageUrl) if err != nil { return } defer resp.Body.Close() body, err := ioutil.ReadAll(resp.Body) if err != nil { return } ctx.ResponseWriter.Write(body) }