/// <summary> /// 下载文件 http路径ftp路径 /// </summary> /// <param name="uri">文件地址</param> /// <returns>字节数组</returns> static private byte[] ConvertFileToByte(string uri) { byte[] by = null; if (!string.IsNullOrEmpty(uri)) { WebRequest webRequest = null; WebResponse webResponse = null; try { if (uri.StartsWith("https://", StringComparison.CurrentCultureIgnoreCase) || uri.StartsWith("http://", StringComparison.CurrentCultureIgnoreCase)) { webRequest = (HttpWebRequest)WebRequest.Create(uri); webRequest.Method = "get"; webRequest.Proxy = null; webResponse = (HttpWebResponse)webRequest.GetResponse(); } else if (uri.StartsWith("ftp://", StringComparison.CurrentCultureIgnoreCase)) { webRequest = (FtpWebRequest)WebRequest.Create(new Uri(uri)); webRequest.Method = WebRequestMethods.Ftp.DownloadFile; ((FtpWebRequest)webRequest).UseBinary = true; webRequest.Proxy = null; webResponse = (FtpWebResponse)webRequest.GetResponse(); } else { throw new ArgumentException("uri非http ftp地址"); } Stream responseStream = webResponse.GetResponseStream(); //创建本地文件写入流 MemoryStream stream = new MemoryStream(); byte[] bArr = new byte[1024]; int size = responseStream.Read(bArr, 0, bArr.Length); while (size > 0) { stream.Write(bArr, 0, size); size = responseStream.Read(bArr, 0, bArr.Length); } by = stream.ToArray(); stream.Close(); responseStream.Close(); } catch (Exception ex) { } finally { if (webRequest != null) { webRequest.Abort(); } if (webResponse != null) { webResponse.Close(); } } } else { throw new ArgumentException("参数uri空异常"); } return by; } /// <summary> /// 下载文件 http路径ftp路径 /// </summary> /// <param name="uri">文件地址</param> /// <returns>字节数组</returns> public static byte[] DownLoadFile(string uri) { byte[] bytes = null; if (!string.IsNullOrEmpty(uri)) { WebRequest webRequest = null; WebResponse webResponse = null; try { if (uri.StartsWith("https://", StringComparison.CurrentCultureIgnoreCase) || uri.StartsWith("http://", StringComparison.CurrentCultureIgnoreCase)) { webRequest = (HttpWebRequest)WebRequest.Create(uri); webRequest.Method = "get"; webRequest.Proxy = null; webResponse = (HttpWebResponse)webRequest.GetResponse(); } else if (uri.StartsWith("ftp://", StringComparison.CurrentCultureIgnoreCase)) { webRequest = (FtpWebRequest)WebRequest.Create(new Uri(uri)); webRequest.Method = WebRequestMethods.Ftp.DownloadFile; ((FtpWebRequest)webRequest).UseBinary = true; webRequest.Proxy = null; webResponse = (FtpWebResponse)webRequest.GetResponse(); } else { throw new ArgumentException("uri非http ftp地址"); } using (webResponse) { using (Stream responseStream = webResponse.GetResponseStream()) { using (MemoryStream ms = new MemoryStream()) { byte[] buffer = new byte[2048]; int read = 0; do { read = responseStream.Read(buffer, 0, buffer.Length); ms.Write(buffer, 0, read); ms.Flush(); } while (read != 0); ms.Flush(); bytes = ms.ToArray(); } } } } finally { if (webRequest != null) { webRequest.Abort(); } if (webResponse != null) { webResponse.Close(); } } } else { throw new ArgumentException("参数uri空异常"); } return bytes; }