模拟GET请求

public static String getBody(String url) throws Exception{   HttpClient httpClient = new DefaultHttpClient(); HttpGet httpGet = new HttpGet(url);         httpGet.addHeader("Cookie", ""); httpGet.addHeader("User-Agent", ""); HttpResponse httpResponse = httpClient.execute(httpGet); HttpEntity entity=httpResponse.getEntity(); String jsonStr = EntityUtils.toString(entity, "utf-8");if(httpResponse.getStatusLine().getStatusCode() == 200){ return jsonStr; }  return "";}