C#兼容各大浏览器的文件下载实例详解
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2022-05-24 09:56:13
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本文给大家分享一段实例代码关于css实现文件下载功能,需要的的朋友参考下吧
1、css代码
public void DownFile(string filePath ,string fileName ) { // filePath 文件路径 例如:/File/记录.xlsx // fileName 文件名称 例如:记录.xlsx (要后缀哦) Encoding encoding; // 申明编码 string outputFileName; // 输出名字 Debug.Assert(HttpContext.ApplicationInstance.Request.UserAgent != null, "HttpContext.ApplicationInstance.Request.UserAgent != null"); string browser = HttpContext.ApplicationInstance.Request.UserAgent.ToUpper(); // 微软的浏览器和ie过滤 if (browser.Contains("MS") && browser.Contains("IE")) { outputFileName = HttpUtility.UrlEncode(filePath); encoding = Encoding.Default; } //火狐 else if (browser.Contains("FIREFOX")) { outputFileName = fileName; encoding = Encoding.GetEncoding("GB2312"); } else { outputFileName = HttpUtility.UrlEncode(fileName); encoding = Encoding.Default; } string absoluFilePath = Server.MapPath(filePath); //获取上传文件路径 FileStream fs = new FileStream(absoluFilePath, FileMode.Open); byte[] bytes = new byte[(int)fs.Length]; fs.Read(bytes, 0, bytes.Length); fs.Close(); //关闭流,释放资源 HttpContext.ApplicationInstance.Response.Clear(); HttpContext.ApplicationInstance.Response.Buffer = true; HttpContext.ApplicationInstance.Response.ContentEncoding = encoding; HttpContext.ApplicationInstance.Response.AddHeader("Content-Disposition", string.Format("attachment; filename={0}", string.IsNullOrEmpty(outputFileName) ? DateTime.Now.ToString("yyyyMMddHHmmssfff") : outputFileName)); Response.BinaryWrite(bytes); Response.Flush(); HttpContext.ApplicationInstance.Response.End(); }
2、html代码
前端HTML 写一个a标签就好:如 <a href='DownFile' target='_blank'>文件下载</a>
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