api接口开发跨域注意事项和设置

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');

 

转载于:https://www.cnblogs.com/whlives/p/8943996.html

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