Nginx提示CORS ：No ‘Access-Control-Allow-Origin’ header 解决办法

有时候你的业务需求，可能会出现跨域的问题，我的博客也是一样的（因为我博客用的站群模式）。当你在我的博客注册的时候，Console控制台会出现如下错误：

Access to Font at 'https://www.fujieace.com/wp-content/themes/fujie/css/fonts/fontawesome-webfont.woff?v=4.4.0' from origin 'https://fujieace.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'https://fujieace.com' is therefore not allowed access.
wp-signup.php:1 Access to Font at 'https://www.fujieace.com/wp-content/themes/fujie/css/fonts/fontawesome-webfont.ttf?v=4.4.0' from origin 'https://fujieace.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'https://fujieace.com' is therefore not allowed access.
wp-signup.php:1 Access to Font at 'https://www.fujieace.com/wp-content/plugins/comments-like-dislike/fonts/fontawesome-webfont.woff2?v=4.6.3' from origin 'https://fujieace.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'https://fujieace.com' is therefore not allowed access.
wp-signup.php:1 Access to Font at 'https://www.fujieace.com/wp-content/plugins/comments-like-dislike/fonts/fontawesome-webfont.woff?v=4.6.3' from origin 'https://fujieace.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'https://fujieace.com' is therefore not allowed access.
wp-signup.php:1 Access to Font at 'https://www.fujieace.com/wp-content/plugins/comments-like-dislike/fonts/fontawesome-webfont.ttf?v=4.6.3' from origin 'https://fujieace.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'https://fujieace.com' is therefore not allowed access.

上面报错大致意思如下：

从原产地'https://fujieace.com'访问'https://www.fujieace.com/wp-content/themes/fujie/css/fonts/fontawesome-webfont.woff?v=4.4.0'中的字体 已被CORS策略阻止：请求的资源上没有“Access-Control-Allow-Origin”标头。 因此，不允许来源“https://fujieace.com”访问。

解决办法

由于我博客被CORS策略阻止的只有字体，因此我只需要nginx配置字体跨域就行了。就不用配置其它跨域了。毕竟：Access-Control-Allow-Origin * 跨域是很危险的。

注意：nginx.conf配置好了，一定要重启nginx。

nginx中Access-Control-Allow-Origin字体跨域配置

方法：

location ~* \.(eot|ttf|woff|woff2|svg)$ {
    add_header Access-Control-Allow-Origin *;
    add_header Access-Control-Allow-Headers X-Requested-With;
    add_header Access-Control-Allow-Methods GET,POST,OPTIONS;
}

以上nginx.conf这样就可以实现GET、POST、OPTIONS的跨域请求的支持，也可以 add_header Access-Control-Allow-Origin --指定允许的url;

nginx中Access-Control-Allow-Origin 其它跨域配置

示例：

#
# 用于nginx的开放式CORS配置
#
location / {
     if ($request_method = 'OPTIONS') {
        add_header 'Access-Control-Allow-Origin' '*';
        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
        #
        # 自定义标题和标题各种浏览器*应该*可以，但不是
        #
        add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range';
        #
        # 告诉客户这个飞行前信息有效期为20天
        #
        add_header 'Access-Control-Max-Age' 1728000;
        add_header 'Content-Type' 'text/plain; charset=utf-8';
        add_header 'Content-Length' 0;
        return 204;
     }
     if ($request_method = 'POST') {
        add_header 'Access-Control-Allow-Origin' '*';
        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
        add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range';
        add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range';
     }
     if ($request_method = 'GET') {
        add_header 'Access-Control-Allow-Origin' '*';
        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
        add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range';
        add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range';
     }
}