public static void main(String args[]) {
try {
aServer asr = new aServer();
// file channel.
FileInputStream is = new FileInputStream("");
is.read();
FileChannel cha = is.getChannel();
ByteBuffer bf = ByteBuffer.allocate(1024);
bf.flip();
cha.read(bf);
// Path Paths
Path pth = Paths.get("", "");
// Files some static operation.
Files.newByteChannel(pth);
Files.copy(pth, pth);
// file attribute, other different class for dos and posix system.
BasicFileAttributes bas = Files.readAttributes(pth, BasicFileAttributes.class);
bas.size();
} catch (Exception e) {
System.err.println(e);
}
System.out.println("hello ");
}
/**
* Checks if a given file exists and, if not, create it by copying a default template from
* resources; used to create default conf files.
*
* @param file The path of the file that needs to exist
* @param template The path of the template for the file
*/
public static void ensureFileExists(final String file, final String template) {
if (LAUNCHED_FROM_JAR && !Files.exists(Paths.get(file))) {
if (Debug.on) printDebug("[Meta] " + file + " does not exist: creating a default one.");
InputStream stream = Meta.class.getResourceAsStream(template);
if (stream == null) {
printDebug(
"[ WARNING ] template for "
+ template
+ " not found. Won't create a default "
+ file
+ ".");
} else {
int readBytes;
byte[] buffer = new byte[4096];
try (OutputStream outStream = new FileOutputStream(new File(file))) {
while ((readBytes = stream.read(buffer)) > 0) {
outStream.write(buffer, 0, readBytes);
}
if (Debug.on)
printDebug("[Meta] created default file " + file + " from " + template + ".");
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
stream.close();
} catch (IOException ignore) {
}
}
}
} else {
if (Meta.LAUNCHED_FROM_JAR && Debug.on) printDebug("[Meta] file exists: " + file + ".");
}
}
/**
* 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 static void main(String[] args) throws IOException {
Properties props = new Properties();
try (InputStream in = Files.newInputStream(Paths.get(args[0]))) {
props.load(in);
}
String url = props.remove("url").toString();
String result = doPost(url, props);
System.out.println(result);
}
/**
* Searches for the directory 'dirPath'; if not found, tries to create it, then returns a File
* object for that directory.
*/
public static File ensureDirExists(final String dirPath) {
File dirpath = new File(dirPath);
if (!dirpath.isDirectory()) {
if (!dirpath.exists()) {
printDebug("[Meta] " + dirpath + " does not exist: creating it...");
try {
Files.createDirectories(Paths.get(dirpath.getPath()));
return dirpath;
} catch (IOException e) {
printDebug("[Meta] Exception while creating directory:");
e.printStackTrace();
return null;
}
} else {
printDebug(
"[Meta] Error: path `"
+ dirpath
+ "' is not a valid directory path, and could not create it.");
return null;
}
} else return dirpath;
}
private void setOwnership(File dir, String group, String owner) {
try {
Path path = dir.toPath();
UserPrincipalLookupService lookupService =
FileSystems.getDefault().getUserPrincipalLookupService();
GroupPrincipal groupPrincipal = lookupService.lookupPrincipalByGroupName(group);
UserPrincipal userPrincipal = lookupService.lookupPrincipalByName(owner);
PosixFileAttributeView pfav =
Files.getFileAttributeView(path, PosixFileAttributeView.class, LinkOption.NOFOLLOW_LINKS);
pfav.setGroup(groupPrincipal);
pfav.setOwner(userPrincipal);
} catch (Exception ex) {
cp.appendln("Unable to set the file group and owner for\n " + dir);
}
}