nginx 跨域

代码如下：

location / {
    if ($request_method = OPTIONS ) {
        add_header Content-Type *;
        add_header Access-Control-Allow-Origin *;
        add_header Access-Control-Allow-Methods 'POST, GET, OPTIONS, PUT, DELETE';
        add_header Access-Control-Allow-Credentials true;
        add_header Access-Control-Allow-Headers '*,Content-Type,accessToken,Authorization';
        return 200;
    }
}