Asp.net Mvc、webApi配置允许跨域

Web.config 下<system.webServer> 节点下配置

<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>

设置允许跨域传递Cookie

<system.webServer>
    <httpProtocol>
      <customHeaders>
        <add name="Access-Control-Allow-Origin" value="http://localhost:8080" />
        <add name="Access-Control-Allow-Headers" value="content-type" />
        <add name="Access-Control-Allow-Methods" value="*" />
        <add name="Access-Control-Allow-Credentials" value="true"/>
      </customHeaders>
    </httpProtocol>

 </system.webServer>

前端 请求的时候需设定：withCredentials = true; 设置了widthCredentials为true的请求中会包含远程域的所有cookie