MVCAPI中的配置允许跨域

<httpProtocol>
      <customHeaders>
        <add name="Access-Control-Allow-Origin" value="http://localhost:60699" />
        <add name="Access-Control-Allow-Headers" value="*" />
        <add name="Access-Control-Allow-Methods" value="GET, POST, PUT, DELETE" />
      </customHeaders>
    </httpProtocol>
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原文地址：https://www.cnblogs.com/htbmvc/p/7910713.html