("Content-Length");
007 String[] ss = getHeader("Content-Range").split("[/]");
008 if (ss.length > 1)
009 length = Integer.parseInt(ss[1]);
010 else
011 length = -1;
012 }
013 catch (Exception e)
014 {
015 }
016 return length;
017 }
getFileSize圭隈議孔嬬頁誼欺和墮猟周議糞縞寄弌。遍枠壓006佩宥狛Content-Length誼欺阻輝念?哘?連議糞悶坪否寄弌。隼朔壓009佩誼欺阻Content-Range忖粁峙侭宙峰議猟周議糞縞寄弌("""朔中議峙)。泌惚Content-Range忖粁音贋壓?夸猟周議糞縞寄弌祥頁Content-Length忖粁議峙。泌惚Content-Length忖粁匆音贋壓?夸卦指-1?燕幣猟周糞縞寄弌涙隈鳩協。
001 public void download(DownloadEvent de, String url , String localFN,
002 int cacheSize) throws Exception
003 {
004 File file = new File(localFN);
005 long finishedSize = 0;
006 long fileSize = 0; // localFN侭峺議猟周議糞縞寄弌
007 FileOutputStream fileOut = new FileOutputStream(localFN, true);
008 URL myUrl = new URL(url );
009 Socket socket = new Socket();
010 byte[] buffer = new byte[cacheSize]; // 和墮方象議産喝
011
012 if (file.exists())
013 finishedSize = file.length();
014
015 // 誼欺勣和墮議Web彿坿議極笥催?隆戻工?潮範頁80
016 int port = (myUrl .getPort() == -1) ? 80 : myUrl .getPort();
017 de.state("屎壓銭俊" + myUrl .getHost() + ":" + String.valueOf(port));
018 socket.connect(new InetSocketAddress(myUrl .getHost(), port), 20000);
019 de.state("銭俊撹孔!");
020
021 // 恢伏HTTP萩箔?連
022 generateHttpRequest(socket.getOutputStream(), myUrl .getHost(), myUrl
023 .getPath(), finishedSize);
024
025 InputStream inputStream = socket.getInputStream();
026 // 蛍裂HTTP?哘?連遊
027 analyzeHttpHeader(inputStream, de);
028 fileSize = getFileSize(); // 誼欺和墮猟周議糞縞寄弌
029 if (finishedSize >= fileSize)
030 return;
031 else
032 {
033 if (finishedSize > 0 && stateCode.equals("200"))
034 return;
035 }
036 if (stateCode.charAt(0) != ''2'')
037 throw new Exception("音屶隔議?哘鷹");
038 int n = 0;
039 long m = finishedSize;
040 while ((n = inputStream.read(buffer)) != -1)
041 {
042 fileOut.write(buffer, 0, n);
043 m += n;
044 if (fileSize != -1)
045 {
046
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