获取文件大小，远程文件是否可以访问

个人收藏小代码： 

public static String getFileSize(String path) {
    File ff = new File(path);
    String tmplen = "0.0";
    if (ff.exists()) {
      long len = ff.length();
      tmplen = (new StringBuffer(String.valueOf(len / 1024L))).toString();
    }
    else {
      tmplen = getRemoteFileSize(path);
    }
    return tmplen;
  }

  public static String getRemoteFileSize(String path) {
    String tmplen = "1.0";
    try {
      URL url = new URL(path);
      HttpURLConnection httpConnection = (HttpURLConnection) url
          .openConnection();
      if (httpConnection.getResponseCode() == 200) {
        long filelen = httpConnection.getContentLength();
        tmplen = (new StringBuffer(String.valueOf(filelen / 1024L))).toString();
      }
    }
    catch (UnknownHostException unknow) {
      logger.error("GetRemoteFileSize error1:" + unknow);
      //unknow.printStackTrace();
    }
    catch (IOException ioe) {
      logger.error("GetRemoteFileSize error2:" + ioe);
      //ioe.printStackTrace();
    }
    catch (Exception e) {
      logger.error("GetRemoteFileSize error3:" + e);
      //e.printStackTrace();
    }

    return tmplen;
  }