CORS预检响应未成功，已拦截跨源请求：同源策略禁止读取位于
protected void Application_BeginRequest(object sender, EventArgs e)
{
System.Web.HttpApplication app = sender as System.Web.HttpApplication;
HttpResponse response = app.Response;
//支持跨域
if (app.Request.HttpMethod == "OPTIONS")
{
//支持跨域
response.AddHeader("Access-Control-Allow-Methods", "*");
response.AddHeader("Access-Control-Allow-Headers", "*");
response.AddHeader("Access-Control-Allow-Origin", "*");
response.AddHeader("Cache-Control", "no-cache");
response.StatusCode = 200;
response.End();
}
else
{
response.AddHeader("Access-Control-Allow-Origin", "*");
response.AddHeader("Access-Control-Allow-Headers", "*");
response.AddHeader("Access-Control-Allow-Methods", "*");
response.AddHeader("Cache-Control", "no-cache");
//("Access-Control-Allow-Methods", "GET, POST,PUT, DELETE");
//("Access-Control-Allow-Headers", "Content-Type");
}
}