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());
}
/**
* 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();
}