跨域问题解决

Global

protected void Application_BeginRequest()
{
　　if (Request.Headers.AllKeys.Contains("Origin") && Request.HttpMethod == "OPTIONS")
　　{
　　　　Response.End();
　　}
}

Web.config

<httpProtocol>
<customHeaders>
<add name="Access-Control-Allow-Origin" value="*" />
<add name="Access-Control-Allow-Headers" value="Content-Type,Token" />
<add name="Access-Control-Allow-Methods" value="GET, POST, PUT, DELETE, OPTIONS" />
</customHeaders>
</httpProtocol>