参考网址:https://segmentfault.com/a/1190000012469713
.net简单方案:webconfig配置,value="*"为全允许,安全性差,具体根据需求配。
<httpProtocol>
<customHeaders>
<add name="Access-Control-Allow-Origin" value="*" />
<add name="Access-Control-Allow-Headers" value="*" />
<add name="Access-Control-Allow-Methods" value="POST, PUT, DELETE" /><!--自己选-->
</customHeaders>
</httpProtocol>