StreamUtil流处理

/**  * 通过输入流，将其转换成字节byte数组  *   * @param is  *            输入的数据流  * @return byte[] 转化后的字节数组  * */ public static byte[] getByteByStream(InputStream is) {  ByteArrayOutputStream baos = new ByteArrayOutputStream();  byte[] b = new byte[1024];  int length = 0;  while (length != -1) {   try {    length = is.read(b);   } catch (IOException e) {    // TODO Auto-generated catch block    e.printStackTrace();   }   if (length != -1) {    baos.write(b, 0, length);   }  }  if (is != null) {   try {    is.close();    is = null;   } catch (IOException e) {    // TODO Auto-generated catch block    e.printStackTrace();   }     }  return baos.toByteArray(); } /**  * 通过URL，获取输入流InputStream  *   * @param url  *            URL地址  * @return InputStream 获取输入流InputStream  * */ public static InputStream getInputStreamByUrl(String url){  InputStream is = null;  DefaultHttpClient httpClient = new DefaultHttpClient();  HttpGet request = new HttpGet(url);//请求方式为get  try {   HttpResponse response = httpClient.execute(request);//服务端响应   is = response.getEntity().getContent();//获取响应InputStream  } catch (ClientProtocolException e) {   // TODO Auto-generated catch block   e.printStackTrace();  } catch (IOException e) {   // TODO Auto-generated catch block   e.printStackTrace();  }  return is;   }