.net core 拦截API调用判断参数

因为需要判断票据是否超时的，超时的话则返回登录页。

public void Configure((IApplicationBuilder app, IHostingEnvironment env)
        {
//添加一个中间件
  app.Use((context, next) =>
            {
                // context.Response.WriteAsync("this is test");
                var resposeLen = context.Request;
                try
                {
                    //判断方法中是否有ticket参数，如果有则代表该操作需要判断ticket是否有效，过期
                    if (resposeLen.Form.Keys.Contains("ticket"))
                    {
                        string ticket = resposeLen.Form["ticket"].ToString();
                        Guid userGuid;//返回的用户ID
                        string s0;//返回的系统名称
                        DateTime dt;//返回的时间
                        if (TicketRingContext.Parse(ticket, out userGuid, out s0, out dt))
                        {
                            //一但正确获取到了ticket的创建时间及用户信息，则进行下一步的判断
                            int outTime =ServiceConfigurationHelper.GetServerValue("TicketTimeOut") ==null?0:int.Parse(ServiceConfigurationHelper.GetServerValue("TicketTimeOut"));
                            if ((System.DateTime.Now - dt).TotalMinutes > outTime&&outTime!=0)
                            {
                                //超时则改变请求方法，改为登录超时的方法。
                                context.Request.Path = "/api/AlarmInfo/GotoHome";
                            }
                        }
                    }
                }
                catch (Exception ex)
                {
                    //异常则按照原来的顺序继续执行
                    return next();
                }
                return next();
            });
}　　

GotoHome方法：

[Route("GotoHome")]
[HttpPost]
public object GotoHome() {
    return new {State=false,ErrorCode=1001,Message="登录超时",GotoUrl= ServiceConfigurationHelper.GetServerValue("Comp") };
}

修改jquery.js的回调方法：

    return jQuery.ajax( jQuery.extend( {
        url: url,
        type: method,
        dataType: type,
        data: data,
        success: function (data) {<br>//如果返回的参数满足所有条件，则代表是登录超时。
            if (data.State != undefined && data.State == false && data.ErrorCode != undefined && data.ErrorCode == 1001) {
//判断当前页面是否是子页面(嵌入到Iframe里面的)，如果是则提示登录失效，如果不是则直接跳转到首页。
                if (top.location != self.location) {
                //  alert("登录失效，");
                } else {
                    location.href = data.GotoUrl;
                }
             
            }
             callback(data);
        }
    }, jQuery.isPlainObject( url ) && url ) );