Golang File.Path方法代碼示例

// delete image
func (this *FileService) DeleteImage(userId, fileId string) (bool, string) {
	file := info.File{}
	db.GetByIdAndUserId(db.Files, fileId, userId, &file)

	if file.FileId != "" {
		if db.DeleteByIdAndUserId(db.Files, fileId, userId) {
			// delete image
			// TODO
			file.Path = strings.TrimLeft(file.Path, "/")
			var err error
			if strings.HasPrefix(file.Path, "upload") {
				Log(file.Path)
				err = os.Remove(revel.BasePath + "/public/" + file.Path)
			} else {
				err = os.Remove(revel.BasePath + "/" + file.Path)
			}
			if err == nil {
				return true, ""
			}
			return false, "delete file error!"
		}
		return false, "db error"
	}
	return false, "no such item"
}

// 上傳圖片, 公用方法
// upload image common func
func (c File) uploadImage(from, albumId string) (re info.Re) {
	var fileUrlPath = ""
	var fileId = ""
	var resultCode = 0      // 1表示正常
	var resultMsg = "error" // 錯誤信息
	var Ok = false

	defer func() {
		re.Id = fileId // 隻是id, 沒有其它信息
		re.Code = resultCode
		re.Msg = resultMsg
		re.Ok = Ok
	}()

	file, handel, err := c.Request.FormFile("file")
	if err != nil {
		return re
	}
	defer file.Close()
	// 生成上傳路徑
	if from == "logo" || from == "blogLogo" {
		fileUrlPath = "public/upload/" + c.GetUserId() + "/images/logo"
	} else {
		fileUrlPath = "files/" + c.GetUserId() + "/images"
	}
	dir := revel.BasePath + "/" + fileUrlPath
	err = os.MkdirAll(dir, 0755)
	if err != nil {
		return re
	}
	// 生成新的文件名
	filename := handel.Filename

	var ext string
	if from == "pasteImage" {
		ext = ".png" // TODO 可能不是png類型
	} else {
		_, ext = SplitFilename(filename)
		if ext != ".gif" && ext != ".jpg" && ext != ".png" && ext != ".bmp" && ext != ".jpeg" {
			resultMsg = "Please upload image"
			return re
		}
	}

	filename = NewGuid() + ext
	data, err := ioutil.ReadAll(file)
	if err != nil {
		LogJ(err)
		return re
	}

	var maxFileSize float64
	if from == "logo" {
		maxFileSize = configService.GetUploadSize("uploadAvatarSize")
	} else if from == "blogLogo" {
		maxFileSize = configService.GetUploadSize("uploadBlogLogoSize")
	} else {
		maxFileSize = configService.GetUploadSize("uploadImageSize")
	}
	if maxFileSize <= 0 {
		maxFileSize = 1000
	}

	// > 2M?
	if float64(len(data)) > maxFileSize*float64(1024*1024) {
		resultCode = 0
		resultMsg = fmt.Sprintf("The file Size is bigger than %vM", maxFileSize)
		return re
	}

	toPath := dir + "/" + filename
	err = ioutil.WriteFile(toPath, data, 0777)
	if err != nil {
		LogJ(err)
		return re
	}
	// 改變成gif圖片
	_, toPathGif := TransToGif(toPath, 0, true)
	filename = GetFilename(toPathGif)
	filesize := GetFilesize(toPathGif)
	fileUrlPath += "/" + filename
	resultCode = 1
	resultMsg = "Upload Success!"

	// File
	fileInfo := info.File{Name: filename,
		Title: handel.Filename,
		Path:  fileUrlPath,
		Size:  filesize}

	id := bson.NewObjectId()
	fileInfo.FileId = id
	fileId = id.Hex()
	if from == "logo" || from == "blogLogo" {
		fileId = "public/upload/" + c.GetUserId() + "/images/logo/" + filename
	}

	Ok, resultMsg = fileService.AddImage(fileInfo, albumId, c.GetUserId(), from == "" || from == "pasteImage")
//.........這裏部分代碼省略.........