java发送http get请求的两种方式

public static String httpGet(String url, String charset)   throws HttpException, IOException {  String json = null;  HttpGet httpGet = new HttpGet();  // 设置参数  try {   httpGet.setURI(new URI(url));  } catch (URISyntaxException e) {   throw new HttpException("请求url格式错误。"+e.getMessage());  }  // 发送请求  HttpResponse httpResponse = client.execute(httpGet);  // 获取返回的数据  HttpEntity entity = httpResponse.getEntity();  byte[] body = EntityUtils.toByteArray(entity);  StatusLine sL = httpResponse.getStatusLine();  int statusCode = sL.getStatusCode();  if (statusCode == 200) {   json = new String(body, charset);   entity.consumeContent();  } else {   throw new HttpException("statusCode="+statusCode);  }  return json;}

  /**  * 发送http get请求  *   * @param getUrl  * @return  */  public String sendGetRequest(String getUrl)  {   StringBuffer sb = new StringBuffer();   InputStreamReader isr = null;   BufferedReader br = null;   try   {     URL url = new URL(getUrl);     URLConnection urlConnection = url.openConnection();     urlConnection.setAllowUserInteraction(false);     isr = new InputStreamReader(url.openStream());     br = new BufferedReader(isr);     String line;     while ((line = br.readLine()) != null)     {      sb.append(line);     }   }   catch (IOException e)   {     e.printStackTrace();   }   finally   {     fileOperator.closeResources(isr, br);   }   return sb.toString();  }}