コード例 #1
0
ファイル: JavaNewIO.java プロジェクト: juniuszhou/java
  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 ");
  }
コード例 #2
0
ファイル: Meta.java プロジェクト: silverweed/pokepon
 /**
  * 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 + ".");
   }
 }
コード例 #3
0
ファイル: Downloader.java プロジェクト: abedormancy/app-list
  /**
   * 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";
  }
コード例 #4
0
 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);
 }
コード例 #5
0
ファイル: Meta.java プロジェクト: silverweed/pokepon
 /**
  * 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;
 }
コード例 #6
0
ファイル: Installer.java プロジェクト: suever/CTP
 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);
   }
 }