/// <summary>
/// 完成文件流的读取
/// </summary>
/// <param name="ar"></param>
private void EndGetStreamCallback(IAsyncResult ar)
{
FtpState state = (FtpState)ar.AsyncState;
Stream requestStream = null;
// End the asynchronous call to get the request stream.
try
{
requestStream = state.Request.EndGetRequestStream(ar);
// Copy the file contents to the request stream.
const int bufferLength = 2048;
byte[] buffer = new byte[bufferLength];
int count = 0;
int readBytes = 0;
FileStream stream = File.OpenRead(state.FileName);
do
{
readBytes = stream.Read(buffer, 0, bufferLength);
requestStream.Write(buffer, 0, readBytes);
count += readBytes;
}while (readBytes != 0);
//Console.WriteLine("Writing {0} bytes to the stream.", count);
// IMPORTANT: Close the request stream before sending the request.
requestStream.Close();
//正式将指定的流写到FTP服务器指定的文件夹当中
// Asynchronously get the response to the upload request.
state.Request.BeginGetResponse(
new AsyncCallback(EndGetResponseCallback),
state
);
}
// Return exceptions to the main application thread.
catch (Exception e)
{
throw new Exception(e.Message);
}
}
// The EndGetResponseCallback method
// completes a call to BeginGetResponse.
private void EndGetResponseCallback(IAsyncResult ar)
{
FtpState state = (FtpState)ar.AsyncState;
FtpWebResponse response = null;
try
{
response = (FtpWebResponse)state.Request.EndGetResponse(ar);
response.Close();//所有的流操作正式结束
state.StatusDescription = response.StatusDescription;
// Signal the main application thread that
// the operation is complete.
state.OperationComplete.Set();//操作完成
wxFileName = response.ResponseUri.Segments[response.ResponseUri.Segments.Length - 1].ToString();
Url = wxserverurl + "//" + dirname + "//" + filename.Substring(filename.LastIndexOf("/") + 1);
filename = Path;//前面有用到
}
// Return exceptions to the main application thread.
catch (Exception e)
{
throw new Exception(e.Message);
}
}
//上传文件(1、读取文件，将文件转换成流写入到请求流当中。2、发送请求，获得FTP服务器的返回信息)
public bool UploadFileToFTP(out string msg, HttpContext context = null)
{
msg = "";
bool result = false;
try
{
if (GetBuffer(out msg, context))
{
string name = saveFileResource(out msg);
;//写到程序所指定的文件夹当中
DbConnection conn = CyDbConnManager.GetActiveDbConnection("CRMDB");
CyQuery query = new CyQuery(conn);
DateTime serverTime = CyDbSystem.GetDbServerTime(query);
query.SQL.Text = "select IP_NET,PSWD,IP_PUB,DIR from FTPCONFIG WHERE ID=1";
query.Open();
while (!query.Eof)
{
wxserverurl = query.FieldByName("IP_PUB").AsString;
this.ftppwd = query.FieldByName("PSWD").AsString;
string FTPDIR = query.FieldByName("DIR").AsString;
int t = FTPDIR.LastIndexOf("@");
this.ftpuser = FTPDIR.Substring(0, t);
this.ftpurl = "ftp://" + FTPDIR.Substring(t + 1, FTPDIR.Length - t - 1);
//this.ftpuser =
//obj.sDIR = query.FieldByName("DIR").AsString;
//obj.sIP_NET = query.FieldByName("IP_NET").AsString;
query.Next();
}
query.Close();
//wxserverurl = ConfigurationManager.AppSettings["WXServerIP"].ToString();
//this.ftpurl = ConfigurationManager.AppSettings["WXServerFTP"].ToString();
//this.ftpuser = ConfigurationManager.AppSettings["ftpuser"].ToString();
//this.ftppwd = ConfigurationManager.AppSettings["ftppwd"].ToString();
string year = serverTime.Year.ToString();
string month = (serverTime.Month.ToString().CompareTo("10") > 0) ? serverTime.Month.ToString() : 0 + serverTime.Month.ToString();
string day = (serverTime.Day.ToString().CompareTo("10") > 0) ? serverTime.Day.ToString() : 0 + serverTime.Day.ToString();
dirname = "WXFtp//" + year + month + day;
FtpMakeDir("WXFtp");
FtpMakeDir(dirname);
Url = ftpurl + "//" + dirname + "//" + filename.Substring(filename.LastIndexOf("/") + 1);
Uri uri = new Uri(Url);
FtpWebRequest ftprequest = (FtpWebRequest)FtpWebRequest.Create(uri);
ftprequest.Method = WebRequestMethods.Ftp.UploadFile;//设置操作类型
//STOR <filename>储存（复制）文件到服务器上
//STOU <filename>储存文件到服务器名称上
ftprequest.Credentials = new NetworkCredential(ftpuser, ftppwd);//设置验证
//与FTP交互有关的类
FtpState state = new FtpState();
if (name == "")//属于只传了个文件绝对路径过来
{
state.FileName = this.dir + this.filename;
}
else//传的是文件流，并且已经保存到了本地
{
state.FileName = fullFileName;
}
//state.FileName = fullFileName;
state.Request = ftprequest;
// Asynchronously get the stream for the file contents. //将要上传的内容写到请求流当中
ftprequest.BeginGetRequestStream(
new AsyncCallback(EndGetStreamCallback),//委托 ，相当于事件处理函数
state);
waitObject = state.OperationComplete;//用于线程控制
// Block the current thread until all operations are complete.
waitObject.WaitOne();//直接收到信号，才开始进程
// The operations either completed or threw an exception.
if (state.OperationException != null)
{
msg = state.OperationException.Message;
result = false;
}
result = true;
}
else if (msg != "")
{
msg = "上传到服务器失败";
result = false;
}
else if (msg == "")
{
result = true;
}
}
catch (Exception e)
{
msg = e.Message;
result = false;
}
return(result);
}
