关于跨域问题(包括端口和域名跨域)

关于跨域问题(包括端口和域名跨域)

　　1、C#语言跨域 我估计任何语言在返回头加这个都可以解决跨域问题　　　　

//完全跨域设置 包括跨域名和端口
HttpContext.Current.Response.AddHeader("Access-Control-Allow-Origin", "*"); //跨域名
HttpContext.Current.Response.AddHeader("Access-Control-Allow-Headers", "*");//跨端口
HttpContext.Current.Response.AddHeader("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS");
//HttpContext.Current.Response.AddHeader("Access-Control-Allow-Methods", "GET, POST");允许的请求类型
var data = HttpContext.Current.Request.Form["data"].ToString();
HttpContext.Current.Response.ContentType = "text/plain";
HttpContext.Current.Response.Write(data);

　　2、PHP跨域 同一个思想

<?php
$data = $_POST["data"];
//完全跨域设置 包括跨域名和端口
header("Access-Control-Allow-Origin:*"); //跨域名
header("Access-Control-Allow-Headers:*"); //跨端口
header("Access-Control-Allow-Methods:GET, POST, PUT, DELETE, OPTIONS"); //允许的请求类型
header('Content-Type:text/plain');
echo $data;

　　3、webApi跨域访问

       /// <summary>
        /// 跨域解决
        /// </summary>
        /// <param name="httpResponseMessage"></param>
        /// <returns></returns>
        protected HttpResponseMessage crossDomain(HttpResponseMessage httpResponseMessage)
        {
            httpResponseMessage.Headers.Add("Access-Control-Allow-Origin", "*");
            httpResponseMessage.Headers.Add("Access-Control-Allow-Headers", "*");
            httpResponseMessage.Headers.Add("Access-Control-Allow-Methods", "GET, POST");
            return httpResponseMessage;

        }

　　或者在Web.config配置自动发送默认请求头 在<system.webServer>  </system.webServer>之间

  <system.webServer>

    <!--跨域配置-->
    <httpProtocol>
      <customHeaders>
        <add name="Access-Control-Allow-Origin" value="*" />
        <add name="Access-Control-Allow-Headers" value="*" />
        <add name="Access-Control-Allow-Methods" value="GET, POST" />
      </customHeaders>
    </httpProtocol>
    <!--跨域配置-->

ajax跨域只要在返回头加上这三就OK了

Access-Control-Allow-Origin:*
Access-Control-Allow-Headers:*
Access-Control-Allow-Methods:GET, POST, PUT, DELETE, OPTIONS