public?class?HttpUtil?{

	public?static?String?getUrl（String?get_access_token_url）?{
		?String?result?=?null;
	????????try?{
	????????????HttpGet?request?=?new?HttpGet（get_access_token_url）;
	????????????CloseableHttpClient?httpclient?=?HttpClients.createDefault（）;
	????????????HttpResponse?response?=?httpclient.execute（request）;
	????????????
	????????????if?（response.getStatusLine（）.getStatusCode（）?==?HttpStatus.SC_OK）?{
	????????????????result=?EntityUtils.toString（response.getEntity（）“utf-8“）;
	????????????}?
	????????}?catch?（Exception?e）?{
	????????????//?TODO?Auto-generated?catch?block
	????????????e.printStackTrace（）;
	????????}
	????????return?result;

	}

}