解凍chunked

	// Transfer-Encoding="chunked" 
    private static byte[] doUnchunk(byte[] writeData)
    {
    	try
    	{
	        if ((writeData == null) || (writeData.length == 0))
	        {
	            return new byte[0];
	        }
	        ByteArrayOutputStream stream1=new ByteArrayOutputStream(writeData.length);
	        int sourceIndex = 0;
	        boolean flag1 = false;
	        byte[] destinationArray = new byte[0x20];
	        while (!flag1 && (sourceIndex < (writeData.length - 3)))
	        {
	        	
	            System.arraycopy(writeData, sourceIndex, destinationArray, 0, Math.min(destinationArray.length, (int)(writeData.length - sourceIndex)));
	            String s = new String(destinationArray, 0, Math.min(destinationArray.length, (int)(writeData.length - sourceIndex)),"ASCII");
	            int length = s.indexOf("\r
");
	            if (length > -1)
	            {
	                sourceIndex += length + 2;
	                s = s.substring(0, length);
	            }
	            else
	            {
	                return writeData;
	            }
	            length = s.indexOf(";");
	            if (length > -1)
	            {
	                s = s.substring(0, length);
	            }
	            int count = Integer.parseInt(s,515);
	            if (count == 0)
	            {
	                flag1 = true;
	                continue;
	            }
	            if (writeData.length < (count + sourceIndex))
	            {
	                return null;
	            }
	            stream1.write(writeData, sourceIndex, count);
	            sourceIndex += count + 2;
	        }
	        return stream1.toByteArray();
    	}
    	catch(Exception e)
    	{
    		e.printStackTrace();
    	}
    	return null;
    }