前端请求接口出现的跨域问题

header(‘Access-Control-Allow-origin:*‘);
header(‘Access-Control-Allow-Credentials:true‘);
header(‘Access-Control-Allow-Methods: GET, POST, PUT, DELETE, OPTIONS‘);
header(‘Access-Control-Allow-Headers:Origin, No-Cache, X-Requested-With, If-Modified-Since, Pragma, Last-Modified, Cache-Control, Expires, Content-Type, X-E4M-With‘);
header(‘Content-Type: text/html; charset=utf-8‘);