解壓縮GZIP

Question

我想知道我應該在gzip編碼響應的情況下做什麼。這是處理我的迴應的方法：

private InputStream getResultStream(Response response) throws IOException 
{ 
    InputStream resultStream = null; 
    if(response != null) 
    { 
     String encoding = response.getHeader("Content-Encoding"); 
     if((encoding != null) && (encoding.equalsIgnoreCase("gzip"))) 
     { 
      // What to do here ? 
      Log.d("Stream :", "Read GZIP"); 

     } else if ((encoding != null) && encoding.equalsIgnoreCase("deflate")) { 
      resultStream = new InflaterInputStream(response.getStream(), new Inflater(true)); 
      Log.d("Stream :", "Read Deflated."); 
     } else { 
      resultStream = response.getStream(); 
      Log.d("Stream :","Read Normal."); 
     }  
    } 

    return resultStream; 
} 

我該如何解決這個問題？

Answer 1

免責聲明：我沒有有機會對此進行測試。

根據什麼Android’s HTTP Clients博客文章說，如果你在Android 2.3以上，然後HttpURLConnection可以自動爲你做。

Answer 2

將您的信息流包裝在GZIPInputStream中並從中讀取。

resultStream = new GZIPInputStream(resultStream); 
//proceed reading as usual 

Answer 3

如果你只是想知道如何讀gziped流，只是包裝你的InputStream與GZIPInputStream

InputStream is = ... 
GZIPInputStream zis = new GZIPInputStream(new BufferedInputStream(is)); 
try { 
    // Reading from 'zis' gets you the uncompressed bytes... 
    processStream(zis); 
} finally { 
    zis.close(); 
} 

Answer 4

執行以下操作：

resultStream = new java.util.zip.GZIPInputStream(response.getStream());