// TransferUrl 将外站图片URL转为本站，如果失败，返回原图
func (this *UploaderLogic) TransferUrl(ctx context.Context, origUrl string, prefixs ...string) (string, error) {
if origUrl == "" || strings.Contains(origUrl, "studygolang") {
return origUrl, errors.New("origin image is empty or is studygolang.com")
}
resp, err := http.Get(origUrl)
if err != nil {
return origUrl, errors.New("获取图片失败")
}
defer resp.Body.Close()
buf, _ := ioutil.ReadAll(resp.Body)
md5 := goutils.Md5Buf(buf)
objImage, err := this.findImage(md5)
if err != nil {
logger.Errorln("find image:", md5, "error:", err)
return origUrl, err
}
if objImage.Pid > 0 {
return objImage.Path, nil
}
ext := filepath.Ext(origUrl)
if ext == "" {
contentType := http.DetectContentType(buf)
exts, _ := mime.ExtensionsByType(contentType)
if len(exts) > 0 {
ext = exts[0]
}
}
prefix := times.Format("ymd")
if len(prefixs) > 0 {
prefix = prefixs[0]
}
path := prefix + "/" + md5 + ext
reader := bytes.NewReader(buf)
if len(buf) > MaxImageSize {
return origUrl, errors.New("文件太大")
}
err = this.uploadMemoryFile(reader, path)
if err != nil {
return origUrl, err
}
go this.saveImage(buf, path)
return path, nil
}
func (this *UploaderLogic) saveImage(buf []byte, path string) {
objImage := &model.Image{
Path: path,
Md5: goutils.Md5Buf(buf),
Size: len(buf),
}
reader := bytes.NewReader(buf)
img, _, err := image.Decode(reader)
if err != nil {
logger.Errorln("image decode err:", err)
} else {
objImage.Width = img.Bounds().Dx()
objImage.Height = img.Bounds().Dy()
}
_, err = MasterDB.Insert(objImage)
if err != nil {
logger.Errorln("image insert err:", err)
}
}
func (this *UploaderLogic) UploadImage(ctx context.Context, reader gio.Reader, imgDir string, buf []byte, ext string) (string, error) {
objLogger := GetLogger(ctx)
md5 := goutils.Md5Buf(buf)
objImage, err := this.findImage(md5)
if err != nil {
objLogger.Errorln("find image:", md5, "error:", err)
return "", err
}
if objImage.Pid > 0 {
return objImage.Path, nil
}
path := imgDir + "/" + md5 + ext
if err = this.uploadMemoryFile(reader, path); err != nil {
return "", err
}
go this.saveImage(buf, path)
return path, nil
}