nginx No 'Access-Control-Allow-Origin' header is present on the requested resource

回答: 当在访问不同ip的nginx服务器时，出现"No 'Access-Control-Allow-Origin' header is present on the requested resource"的错误时，这是由于被请求的资源没有设置 'Access-Control-Allow-Origin' 导致的。为了解决这个问题，可以在nginx配置文件中添加以下代码：

location / {
add_header Access-Control-Allow-Origin *;
add_header Access-Control-Allow-Methods 'GET, POST, OPTIONS';
add_header Access-Control-Allow-Headers 'DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Authorization';
}

或者可以添加以下配置：

location / {
add_header Access-Control-Allow-Origin *;
add_header Access-Control-Allow-Headers "Origin, X-Requested-With, Content-Type, Accept";
add_header Access-Control-Allow-Methods "GET, POST, OPTIONS";
}

然后重启Nginx服务，即可解决该问题。这样配置会添加响应的header参数，允许跨域访问。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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