public synchronized void logUnavailableHost(URL url) {
    if (this.offlineMode) return;

    if (url == null) {
      String message = Logging.getMessage("nullValue.URLIsNull");
      Logging.error(message);
      throw new IllegalArgumentException(message);
    }

    String hostName = url.getHost();
    HostInfo hi = this.hostMap.get(hostName);
    if (hi != null) {
      if (!hi.isUnavailable()) {
        hi.logCount.incrementAndGet();
        if (hi.isUnavailable()) // host just became unavailable
        this.firePropertyChange(NetworkStatus.HOST_UNAVAILABLE, null, url);
      }
      hi.lastLogTime.set(System.currentTimeMillis());
    } else {
      hi = new HostInfo(this.attemptLimit.get(), this.tryAgainInterval.get());
      hi.logCount.set(1);
      if (hi.isUnavailable()) // the attempt limit may be as low as 1, so handle that case here
      this.firePropertyChange(NetworkStatus.HOST_UNAVAILABLE, null, url);
      this.hostMap.put(hostName, hi);
    }

    this.lastUnavailableLogTime.set(System.currentTimeMillis());
  }
Exemplo n.º 2
0
  /**
   * 以阻塞的方式立即下载一个文件,该方法会覆盖已经存在的文件
   *
   * @param task
   * @return "ok" if download success (else return errmessage);
   */
  static String download(DownloadTask task) {
    if (!openedStatus && show) openStatus();

    URL url;
    HttpURLConnection conn;
    try {
      url = new URL(task.getOrigin());
      conn = (HttpURLConnection) url.openConnection();
      conn.setConnectTimeout(30000);
      conn.setReadTimeout(30000);
      conn.setRequestProperty(
          "User-Agent",
          "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.134 Safari/"
              + Math.random());
      if ("www.imgjav.com".equals(url.getHost())) { // 该网站需要带cookie请求
        conn.setRequestProperty(
            "User-Agent",
            "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.134 Safari/537.36");
        // conn.setRequestProperty("Cookie", "__cfduid=d219ea333c7a9b5743b572697b631925a1446093229;
        // cf_clearance=6ae62d843f5d09acf393f9e4eb130d9366840c82-1446093303-28800");
        conn.setRequestProperty(
            "Cookie",
            "__cfduid=d6ee846b378bb7d5d173a05541f8a2b6a1446090548; cf_clearance=ea10e8db31f8b6ee51570b118dd89b7e616d7b62-1446099714-28800");
        conn.setRequestProperty("Host", "www.imgjav.com");
      }
      Path directory = Paths.get(task.getDest()).getParent();
      if (!Files.exists(directory)) Files.createDirectories(directory);
    } catch (Exception e) {
      e.printStackTrace();
      return e.getMessage();
    }

    try (InputStream is = conn.getInputStream();
        BufferedInputStream in = new BufferedInputStream(is);
        FileOutputStream fos = new FileOutputStream(task.getDest());
        OutputStream out = new BufferedOutputStream(fos); ) {
      int length = conn.getContentLength();
      if (length < 1) throw new IOException("length<1");
      byte[] binary = new byte[length];
      byte[] buff = new byte[65536];
      int len;
      int index = 0;
      while ((len = in.read(buff)) != -1) {
        System.arraycopy(buff, 0, binary, index, len);
        index += len;
        allLen += len; // allLen有线程安全的问题 ,可能会不正确。无需精确数据,所以不同步了
        task.setReceivePercent(String.format("%.2f", ((float) index / length) * 100) + "%");
      }
      out.write(binary);
    } catch (IOException e) {
      e.printStackTrace();
      return e.getMessage();
    }
    return "ok";
  }
  public synchronized void logAvailableHost(URL url) {
    if (this.offlineMode) return;

    if (url == null) {
      String message = Logging.getMessage("nullValue.URLIsNull");
      Logging.error(message);
      throw new IllegalArgumentException(message);
    }

    String hostName = url.getHost();
    HostInfo hi = this.hostMap.get(hostName);
    if (hi != null) {
      this.hostMap.remove(hostName); // host is available again
      firePropertyChange(NetworkStatus.HOST_AVAILABLE, null, url);
    }

    this.lastAvailableLogTime.set(System.currentTimeMillis());
  }
  public boolean isHostUnavailable(URL url) {
    if (this.offlineMode) return true;

    if (url == null) {
      String message = Logging.getMessage("nullValue.URLIsNull");
      Logging.error(message);
      throw new IllegalArgumentException(message);
    }

    String hostName = url.getHost();
    HostInfo hi = this.hostMap.get(hostName);
    if (hi == null) return false;

    if (hi.isTimeToTryAgain()) {
      hi.logCount.set(0); // info removed from table in logAvailableHost
      return false;
    }

    return hi.isUnavailable();
  }