因为跨域请求会先发送一个 OPTIONS 请求, 所以需要判断下 OPTIONS 请求的就直接返回
- if(strtoupper($_SERVER['REQUEST_METHOD'])== 'OPTIONS'){
- header("Access-Control-Allow-Origin:*");
- header("Access-Control-Allow-Headers:content-type");
- header("Access-Control-Request-Method:GET,POST");
- exit;
- }
在返回 json 数据的时候需要在头部加上
- header('Access-Control-Allow-Origin: *');
- header('Access-Control-Allow-Methods: GET,POST');
- header('Access-Control-Allow-Headers: Destination, Content-Type, User-Agent, X-Requested-With, If-Modified-Since');
- header('Access-Control-Allow-Credentials: true');
来源: http://www.bubuko.com/infodetail-2574204.html