C# 根据MySQL数据库中数据，批量删除OSS上的垃圾文件

 protected void btndeleteTask_Click(object sender, EventArgs e){//获取标识为已删除数据，一次加载500条int countlocks = _goodsItemsApplication.CountAllNeedExecuteTask();int totalPagelocks = (countlocks + 500 - 1) / 500;//分批次处理for (int curentpage = 1; curentpage <= totalPagelocks; curentpage++){var listItems = _goodsItemsApplication.GetPageAllNeedExecuteTask(500, true);foreach (var item in listItems){//获取所有图片路径string[] pathlist = GetAllImagePathsByGoodId(item.ToString());foreach (var temp in pathlist){//删除IIS服务器上的文件DeleteFilesFromServer(temp);//删除远程阿里云OSS对象存储上的文件DeleteFilesFromRemoteServer(temp);} //删除相关表的数据逻辑代码就不贴上来，业务逻辑有点多，根据自己的业务自行发挥}}
}

/// <summary>/// 获取到所有的图片文件路径/// </summary>/// <param name="goodid"></param>/// <returns></returns>private string[] GetAllImagePathsByGoodId(string goodid){string[] arrayList = null;var goodsitem = _goodsItemsApplication.GetGoodsItemsInfoById(goodid);//商品主图var mainimgs = _goodsImgApplication.GetImgListByGoodsId(goodid);foreach (var tempimg in mainimgs){arrayList.AddRange(tempimg.showimg);//删除数据库中商品主图记录_goodsImgApplication.DelImgById(tempimg.Id.ToString());}//中图arrayList.AddRange(goodsitem.medium_img);//小图arrayList.AddRange(goodsitem.small_img);//详情图 var strArray = GetHtmlImageUrlList(goodsitem.description);foreach (var imgurl in strArray){arrayList.AddRange(imgurl);}return arrayList;}/// <summary>/// 服务器上删除站点文件/// </summary>private void DeleteFilesFromServer(string path){//获取全局配置信息var siteConfig = _dataCacheManager.GetConfigSiteGlobal();//特殊处理路径不包含goods字符串时，文件路径=服务器上静态文件目录+图片存储相对路径if (!path.Contains("goods")){path = siteConfig.relay_static_path + path;}//获取文件所处的绝对路径string filepath = Commons.GetMapPath(path);//判断路径是否存在if (Directory.Exists(filepath)){//删除文件File.Delete(path);}}/// <summary>/// 远程服务器删除文件/// </summary>private void DeleteFilesFromRemoteServer(string path){//获取全局配置信息var siteConfig = _dataCacheManager.GetConfigSiteGlobal();//初始化阿里云Oss客户端AlicloudOssClient ossClient = new AlicloudOssClient(new Uri(siteConfig.remote_oss_host),siteConfig.remote_oss_accesskey,siteConfig.remote_oss_accesssecret);//对象存储服务空间名称ossClient.bucketName = siteConfig.remote_oss_bucketname; //传入路径参数必须把路径的首个斜杠替换掉，否则阿里云Oss对象存储不识别，正确传参格式：123/123.jpg（说明：/123/123.jpg不识别）ossClient.DeleteObject(path.Substring(path.IndexOf("/") + 1));}/// <summary>/// 取得HTML中所有图片的 URL。/// </summary>/// <param name="sHtmlText">HTML代码</param>/// <returns>图片的URL列表</returns>private static string[] GetHtmlImageUrlList(string sHtmlText){// 定义正则表达式用来匹配 img 标签Regex regImg = new Regex(@"<img\b[^<>]*?\bsrc[\s\t\r\n]*=[\s\t\r\n]*[""']?[\s\t\r\n]*(?<imgUrl>[^\s\t\r\n""'<>]*)[^<>]*?/?[\s\t\r\n]*>", RegexOptions.IgnoreCase);// 搜索匹配的字符串MatchCollection matches = regImg.Matches(sHtmlText);int i = 0;string[] sUrlList = new string[matches.Count];// 取得匹配项列表foreach (Match match in matches)sUrlList[i++] = match.Groups["imgUrl"].Value.Substring(match.Groups["imgUrl"].Value.IndexOf('/', match.Groups["imgUrl"].Value.IndexOf("/") + 2));return sUrlList;}

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