http2

/**
  * 获取http链接 针对实时接口
  *
  * @param url
  *            String,访问dna的url地址
  * @return HttpURLConnection 返回链接
  */
 protected static HttpURLConnection getConnection(String url) {
  // http客户端连接超时设置

  System.setProperty("sun.net.client.defaultConnectTimeout", "200000");

  // http客户端读取数据超时设置

  System.setProperty("sun.net.client.defaultReadTimeout", "300000");

  HttpURLConnection urlconnection = null;
  try {
   URL urlcon = new URL(url);
   urlconnection = (HttpURLConnection) urlcon.openConnection();
   urlconnection.setRequestProperty("Content-Type",
     "text/html; charset=UTF-8");
   urlconnection.setRequestProperty("Accept", "text/html");
   urlconnection.setRequestProperty("version", "1.0");
   urlconnection.setDoOutput(true);
   urlconnection.setDoInput(true);
   urlconnection.setRequestMethod("POST");
  } catch (IOException IoEx) {
   IoEx.printStackTrace();
   // log.fatal("get search connection fail!");
  } catch (Throwable Ex) {
   // log.fatal("get search connection fail!");
  }

  return urlconnection;
 }