public void Download(string url, UInt32 requestId)
        {
            //判断文件是否存在
            string fileName = m_saveFolder + url.Substring(url.LastIndexOf("/") + 1);

            if (File.Exists(fileName))
            {
                Debug.WriteLine("File already download " + fileName);
                DownloadEventArgs args = new DownloadEventArgs();
                args.requestId = requestId;
                args.result    = fileName;
                DownloadEvent(this, args);
                return;
            }

            try
            {
                HttpWebRequest req       = CreateRequest(url, "GET");
                WebAsyncObject webObject = new WebAsyncObject();
                webObject.request   = req;
                webObject.requestId = requestId;
                webObject.webClient = this;
                req.BeginGetResponse(new AsyncCallback(onDownloadResponse), webObject);
            }
            catch (Exception exception)
            {
                Debug.WriteLine(exception.Message);
                DownloadEventArgs args = new DownloadEventArgs();
                args.requestId = requestId;
                args.result    = "";
                DownloadEvent(this, args);
            }
        }
        static void OnResponse(IAsyncResult ar)
        {
            //Debug.WriteLine("OnResponse 1:" + System.Threading.Thread.CurrentThread.ManagedThreadId);
            var webObject = (WebAsyncObject)ar.AsyncState;
            var request   = webObject.request;
            var requestId = webObject.requestId;
            var webClient = webObject.webClient;

            HttpWebResponse response = null;
            Stream          stream   = null;
            StreamReader    sr       = null;
            string          result   = "";

            try
            {
                response = (HttpWebResponse)request.EndGetResponse(ar);
                stream   = response.GetResponseStream();
                sr       = new StreamReader(stream, Encoding.UTF8);
                result   = sr.ReadToEnd();
            }
            catch (Exception exception)
            {
                Debug.WriteLine(exception.Message);
            }
            finally
            {
                if (sr != null)
                {
                    sr.Close();
                }
                if (stream != null)
                {
                    stream.Close();
                }
                if (response != null)
                {
                    response.Close();
                }
                request.Abort();
            }
            //Debug.WriteLine("OnResponse 2:" + System.Threading.Thread.CurrentThread.ManagedThreadId);
            if (webClient.DownloadEvent != null)
            {
                DownloadEventArgs args = new DownloadEventArgs();
                args.requestId = requestId;
                args.result    = result;
                webClient.DownloadEvent(webClient, args);
            }
        }
        public void Get(string url, UInt32 requestId)
        {
            //Debug.WriteLine("Get " + System.Threading.Thread.CurrentThread.ManagedThreadId);
            try
            {
                HttpWebRequest req = CreateRequest(url, "GET");

                WebAsyncObject webObject = new WebAsyncObject();
                webObject.request   = req;
                webObject.requestId = requestId;
                webObject.webClient = this;
                req.BeginGetResponse(new AsyncCallback(OnResponse), webObject);
            }
            catch (Exception exception)
            {
                Debug.WriteLine(exception.Message);
                DownloadEventArgs args = new DownloadEventArgs();
                args.requestId = requestId;
                args.result    = "";
                DownloadEvent(this, args);
            }
        }
        public void Post(string url, string postData, UInt32 requestId)
        {
            //Debug.WriteLine("Post " + System.Threading.Thread.CurrentThread.ManagedThreadId);
            try
            {
                HttpWebRequest req = CreateRequest(url, "POST");
                byte[]         bs  = Encoding.ASCII.GetBytes(postData);
                req.ContentType   = "application/x-www-form-urlencoded";
                req.ContentLength = bs.Length;

                if (referer.Length > 0)
                {
                    req.Referer = referer;
                }
                req.Accept = "*/*";

                using (Stream reqStream = req.GetRequestStream())
                {
                    reqStream.Write(bs, 0, bs.Length);
                    reqStream.Close();
                }

                WebAsyncObject webObject = new WebAsyncObject();
                webObject.request   = req;
                webObject.requestId = requestId;
                webObject.webClient = this;

                req.BeginGetResponse(new AsyncCallback(OnResponse), webObject);
            }
            catch (Exception exception)
            {
                Debug.WriteLine(exception.Message);
                DownloadEventArgs args = new DownloadEventArgs();
                args.requestId = requestId;
                args.result    = "";
                DownloadEvent(this, args);
            }
        }
Exemple #5
0
 private void onDownloadEvent(object sender, DownloadEventArgs e)
 {
     onDownload(e);//切换线程
 }
Exemple #6
0
        private void onDownload(DownloadEventArgs e)
        {
            // InvokeRequired需要比较调用线程ID和创建线程ID
            // 如果它们不相同则返回true
            if (m_invokeObj.InvokeRequired)
            {
                Debug.WriteLine("onDownload 1:" + System.Threading.Thread.CurrentThread.ManagedThreadId);
                var d = new OnDownloadCallback(onDownload);
                m_invokeObj.Invoke(d, new object[] { e });
            }
            else
            {
                Debug.WriteLine("onDownload 2:" + System.Threading.Thread.CurrentThread.ManagedThreadId);
                var result    = e.result;
                var requestId = e.requestId;

                var searchInfo = getSearchType(requestId);

                if (searchInfo == null)
                {
                    Debug.WriteLine("Warning: requst not exist id:" + requestId + " result:" + result);
                    return;
                }
                var searchType = searchInfo.searchType;
                var queueId    = searchInfo.queueId;
                Debug.WriteLine("request id:" + requestId + " que:" + queueId + " result:" + result + " searchType" + searchType);

                Song   song     = null;
                string songPath = "";
                switch (searchType)
                {
                case SearchType.Invalid:
                    break;

                case SearchType.SongList:
                    var songList = JsonHelper.getSongList(result);
                    if (songList.Count > 0)
                    {
                        song = songList[0];     //只下载第一首歌
                    }
                    break;

                case SearchType.SongInfo:
                    song = JsonHelper.getSong(result);
                    if (song != null)
                    {
                        var quality = song.Quality;
                        if (quality == null)
                        {
                            song = null;
                        }
                    }
                    break;

                case SearchType.SongDownload:
                    songPath = result;
                    break;

                default:
                    break;
                }

                var resultInfo = new SearchResult();
                resultInfo.SongInfo = song;
                resultInfo.QueueId  = queueId;
                resultInfo.SongPath = songPath;

                if (SearchResultEvent != null)
                {
                    SearchResultEvent(resultInfo);
                }
            }
        }
        static void onDownloadResponse(IAsyncResult ar)
        {
            var             webObject   = (WebAsyncObject)ar.AsyncState;
            var             request     = webObject.request;
            var             requestId   = webObject.requestId;
            var             webClient   = webObject.webClient;
            HttpWebResponse response    = null;
            Stream          stream      = null;
            FileStream      fs          = null;
            var             url         = request.RequestUri;
            var             urlStr      = url.AbsoluteUri;
            string          fileName    = webClient.m_saveFolder + urlStr.Substring(urlStr.LastIndexOf("/") + 1);
            string          tmpFileName = fileName + webClient.m_tmpFileExtName;

            bool isError = false;

            if (File.Exists(fileName))
            {
                Debug.WriteLine("Error: file already exist:" + fileName);
                isError = true;
            }
            if (File.Exists(tmpFileName))
            {
                Debug.WriteLine("Error: tmp file already exist:" + tmpFileName);
                isError = true;
            }

            try
            {
                if (!isError)
                {
                    response = (HttpWebResponse)request.EndGetResponse(ar);
                    stream   = response.GetResponseStream();

                    byte[] buffer         = new byte[32 * 1024];
                    int    bytesProcessed = 0;
                    fs = File.Create(tmpFileName);
                    int bytesRead;
                    do
                    {
                        bytesRead = stream.Read(buffer, 0, buffer.Length);
                        fs.Write(buffer, 0, bytesRead);
                        bytesProcessed += bytesRead;
                    }while (bytesRead > 0);
                }
            }
            catch (Exception exception)
            {
                Debug.WriteLine(exception.Message);
                isError = true;
            }
            finally
            {
                if (fs != null)
                {
                    fs.Flush(); fs.Close();
                }
                if (stream != null)
                {
                    stream.Close();
                }
                if (response != null)
                {
                    response.Close();
                }
                request.Abort();

                if (isError) //出错了
                {
                    //删除文件
                    if (File.Exists(tmpFileName))
                    {
                        File.Delete(tmpFileName);
                    }
                    fileName = "";
                }
                else
                {
                    if (File.Exists(tmpFileName))
                    {
                        File.Move(tmpFileName, fileName);
                    }
                    else
                    {
                        fileName = "";
                    }
                }
            }

            if (webClient.DownloadEvent != null)
            {
                DownloadEventArgs args = new DownloadEventArgs();
                args.requestId = requestId;
                args.result    = fileName;
                webClient.DownloadEvent(webClient, args);
            }
        }