WebClient 文件下载

最新推荐文章于 2024-03-26 15:00:24 发布

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最新推荐文章于 2024-03-26 15:00:24 发布

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原文链接：http://www.cnblogs.com/hausthy/p/4441282.html

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本文详细介绍了如何利用WebClient从指定URL下载文件，并通过修改HTTP响应头将其发送到客户端，确保文件能够正确显示在音乐文件夹中。

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//文件地址
            var path = Utils.GetQueryStringValue("path");//带有http
            //下载文件到前台文件夹Music下
            WebClient client = new WebClient();
            string URLAddress = Common.Utils.GetDataCenterImgUrl()+path;
            string receivePath = HttpContext.Current.Server.MapPath("~/music/");
            string filepath = receivePath + System.IO.Path.GetFileName(URLAddress);
            client.DownloadFile(URLAddress, filepath);
            //下载文件
            HttpContext.Current.Response.ContentType = "application/ms-download";
            string s_path = filepath;
            System.IO.FileInfo file = new System.IO.FileInfo(s_path);
            HttpContext.Current.Response.Clear();
            HttpContext.Current.Response.AddHeader("Content-Type", "application/octet-stream");
            HttpContext.Current.Response.Charset = "utf-8";
            HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment;filename=" + System.Web.HttpUtility.UrlEncode(file.Name, System.Text.Encoding.UTF8));
            HttpContext.Current.Response.AddHeader("Content-Length", file.Length.ToString());
            HttpContext.Current.Response.WriteFile(file.FullName);
            HttpContext.Current.Response.Flush();
            HttpContext.Current.Response.Clear();
            HttpContext.Current.Response.End();

转载于:https://www.cnblogs.com/hausthy/p/4441282.html