有时候因为json跨域，无法获取数据，可以在本地php服务器上临时做一下中转。访问本地服务器php链接， 如 'json.php?link=http://api.minetools.eu' ，其中link为实际要访问的url， 即可获得数据。

<?php

$link = filter_input(INPUT_GET,"link",FILTER_SANITIZE_STRING);

$curl = curl_init();

curl_setopt_array($curl, array(
  CURLOPT_URL => "http://api.minetools.eu/ping/play.desnia.net/25565",
  CURLOPT_URL => $link,
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => array(
    "cache-control: no-cache"
  ),
));

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

// $response = json_decode($response, true); //because of true, it's in an array
// echo 'Online: '. $response['players']['online'];
echo $response;

?>

参考来源为 stack-overflow