code: private HttpRequest getHttpServiceRequest(HttpServletRequest request) throws IOException {
  		HttpRequest httpServiceRequest = null;
  		ObjectInputStream ois = null;
  		try {
  			ois = new ObjectInputStream(request.getInputStream());
  			httpServiceRequest = (HttpRequest) ois.readObject();
  		} catch (Exception e) {
  			Debug.logError(e, module);
  		} finally {
  			if (ois != null)
  				ois.close();
  		}
  		return httpServiceRequest;
  	}
docs: 从请求信息中反序列化