// 用getResponseCode可以獲取URL返回狀態(tài)碼
String surl = "";
try {
      surl="你的url";
        URL url = new URL(surl);
        URLConnection rulConnection  = url.openConnection();
        HttpURLConnection httpUrlConnection = (HttpURLConnection) rulConnection;
        httpUrlConnection.setConnectTimeout(300000);
        httpUrlConnection.setReadTimeout(300000);
        httpUrlConnection.connect();
        String code = new Integer(httpUrlConnection.getResponseCode()).toString();
        String message = httpUrlConnection.getResponseMessage();
        System.out.println("getResponseCode code ="+ code);
        System.out.println("getResponseMessage message ="+ message);
        if(!code.startsWith("2")){
          throw new Exception("ResponseCode is not begin with 2,code="+code);
        }
        System.out.println(getCurDateTime()+"連接"+surl+"正常");
     }catch(Exception ex){
        System.out.println(ex.getMessage());
     }

function GetHttpStatusCode($url){
  $curl = curl_init();
  curl_setopt($curl,CURLOPT_URL,$url);//獲取內容url
  curl_setopt($curl,CURLOPT_HEADER,1);//獲取http頭信息
  curl_setopt($curl,CURLOPT_NOBODY,1);//不返回html的body信息
  curl_setopt($curl,CURLOPT_RETURNTRANSFER,1);//返回數據流，不直接輸出
  curl_setopt($curl,CURLOPT_TIMEOUT,30); //超時時長，單位秒
  curl_exec($curl);
  $rtn= curl_getinfo($curl,CURLINFO_HTTP_CODE);
  curl_close($curl);
  return $rtn;
}
$url = "http://www.baidu.com"；
GetHttpStatusCode（$url）;