点大商城前端跨域问题处理

nginx配置文件：

location / {
      if ($request_method = 'OPTIONS') {
          add_header Access-Control-Allow-Origin *;
          add_header Access-Control-Allow-Methods 'GET,POST,PUT,DELETE,OPTIONS';
          add_header Access-Control-Allow-Headers '*';
          add_header Access-Control-Max-Age 1728000;
          return 200;
        }
    
        add_header Access-Control-Allow-Origin *;
        add_header Access-Control-Allow-Methods 'GET,POST,PUT,DELETE,OPTIONS';
        add_header Access-Control-Allow-Headers '*';
    
        if (!-e $request_filename) {
            rewrite ^(.*)$ /index.php?s=/$1 last;
            break;
        }
    }