asp.net 跨域问题

asp.net 跨域问题

解决方案1：

public void ProcessRequest(HttpContext context)
        {
            //解决跨域问题
            context.Response.ClearHeaders();
            context.Response.AppendHeader("Access-Control-Allow-Origin", "*");
            string requestHeaders = context.Request.Headers["Access-Control-Request-Headers"];
            context.Response.AppendHeader("Access-Control-Allow-Headers",
            string.IsNullOrEmpty(requestHeaders) ? "*" : requestHeaders);
            context.Response.AppendHeader("Access-Control-Allow-Methods", "POST, OPTIONS");
            context.Response.AppendHeader("Content-type", "application/json");

            string action = context.Request.QueryString["action"];
            switch (action)
            {
                case "get_total_pages":
                    getTotalPages();
                    break;
                default:
                    output();
                    break;
            }
        }

解决方案2：

web.config配置文件System.web节点添加以下代码：

    <httpProtocol>
      <customHeaders>
        <add name="Access-Control-Allow-Methods" value="POST,GET"/>
        <add name="Access-Control-Allow-Headers" value="x-requested-with"/>
        <add name="Access-Control-Allow-Origin" value="http://localhost:22779" />
      </customHeaders>
    </httpProtocol>