BOS/BIS正在取得進展

Question

我有一個使用BufferedInputStream和BufferedOutputStream的上傳，現在我想獲得上傳的百分比進度。

如何得到這個？

 BufferedInputStream bis = null; 
    BufferedOutputStream bos = null; 
    try 
    { 
     URL url = new URL(sb.toString()); 
     URLConnection urlc = url.openConnection(); 

     bos = new BufferedOutputStream(urlc.getOutputStream()); 
     bis = new BufferedInputStream(new FileInputStream(source)); 

     int i; 
     int progress = 0; 
     while ((i = bis.read()) != -1) 
     { 
      bos.write(i); 
      //how to get the progress here?! 

     } 
    } 
    finally 
    { 
     if (bis != null) 
      try 
      { 
       bis.close(); 
      } 
      catch (IOException ioe) 
      { 
       ioe.printStackTrace(); 
      } 
     if (bos != null) 
      try 
      { 
       bos.close(); 
      } 
      catch (IOException ioe) 
      { 
       ioe.printStackTrace(); 
      } 

    } 

Answer 1

沒問題。出於這些目的，您可以使用CountingInputStream和CountingOutputStream包裝。見Apache Commons IO 2.5 library。