/// <summary>
/// Provides the filePath and fileName
/// </summary>
/// <param name="filePath">the path of the file.</param>
/// <param name="fileName">The name of the file.</param>
/// <param name="errorinfo">the error info.</param>
/// <returns>If this method succeeds, it returns true. Otherwise, it returns an error code and false.</returns>
public bool DownloadFile(string filePath, string fileName, out string errorinfo)
{
string onlyFileName = Path.GetFileName(fileName);
string newFileName = System.Web.HttpContext.Current.Request.PhysicalApplicationPath + onlyFileName;
Log.WriteUserLog(newFileName, 0, 0, 0);
errorinfo = string.Empty;
if (File.Exists(newFileName))
{
//errorinfo = string.Format("本地文件{0}已存在,无法下载", newFileName);
return false;
}
try
{
string url = "ftp://" + ftpServerIP + "/" + fileName;
Connect(url);//连接
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
Stream ftpStream = response.GetResponseStream();
long cl = response.ContentLength;
int bufferSize = 2048;
int readCount;
byte[] buffer = new byte[bufferSize];
readCount = ftpStream.Read(buffer, 0, bufferSize);
FileStream outputStream = new FileStream(newFileName, FileMode.Create);
while (readCount > 0)
{
outputStream.Write(buffer, 0, readCount);
readCount = ftpStream.Read(buffer, 0, bufferSize);
}
ftpStream.Close();
outputStream.Close();
response.Close();
errorinfo = "";
return true;
}
catch (Exception ex)
{
errorinfo = string.Format("因{0},无法下载", ex.Message);
return false;
}
}