跨域问题

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.Net 跨域

修改Global，添加如下代码

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

修改Web.config，在<system.webServer>节点下添加如下代码

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

.Net Core3.1跨域

https://www.cnblogs.com/puzi0315/p/12197612.html

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