文件复制

 public static boolean copyFile(String srcFilePath, String dstFilePath)
  {
    File from_file = new File(srcFilePath);
    File to_file = new File(dstFilePath);

    if ((to_file.exists()) && (!(to_file.canWrite()))) {
      throw new AfException("目标文件[" + srcFilePath + "已经存在，但不可写]");
    }
    FileInputStream from = null;
    FileOutputStream to = null;
    try {
      from = new FileInputStream(from_file);
      to = new FileOutputStream(to_file);
      byte[] buffer = new byte[4096];
      int bytes_read;
      while ((bytes_read = from.read(buffer)) != -1)
      {
        to.write(buffer, 0, bytes_read); }
    } catch (Exception ex) {
      System.err.println("拷贝文件[" + srcFilePath + "]到[" + dstFilePath + "]异常：");
      ex.printStackTrace();
      return false;
    } finally {
      if (from != null)
        try {
          from.close();
        }
        catch (IOException localIOException2) {
        }
      if (to != null)
        try {
          to.close();
        }
        catch (IOException localIOException3) {
        }
    }
    return true;
  }