// 展示进度条的网络请求// url:网络请求的url// params:请求参数// message:进度条的提示信息// success:成功的回调函数// fail：失败的回调function requestLoading(url, params, message, success, fail, method = 'get') {    // console.log(params)    wx.showNavigationBarLoading();    if (message != "") {        wx.showLoading({            title: message,        })    }    var sessionid = wx.getStorageSync('wx_outin') || wx.getStorageSync('wx');    if (sessionid != "" && sessionid != null) {        var header = {'content-type': 'application/x-www-form-urlencoded', 'Cookie': 'wx=' + sessionid}    } else {        var header = {'content-type': 'application/x-www-form-urlencoded'}    };    wx.request({        url: url,        data: params,        header: header,        method: method,        success: function (res) {            var headerStr = JSON.stringify(res.header);            // 判断响应头cookie里是否有wx，若有则存储到wxCookie里            if (sessionid == "" || sessionid == null){                if (headerStr.indexOf("wx=") > -1) {                    var reg = /wx=(\w+)[;|"]/;                    var wxCookie = reg.exec(headerStr)[1];                    wx.setStorageSync('wx', wxCookie);                }            }            // console.log(wx.getStorageSync('wx'))            wx.hideNavigationBarLoading()            if (message != "") {                wx.hideLoading()            }            if (res.statusCode == 200) {                console.log(res.data.stat)                if (res.data.stat==2){                    wx.showModal({                        title: '提示',                        content: '账号已退出，请重新登录',                        showCancel: false,                        success: function (res) {                            wx.redirectTo({                                url: '../regist/index'                            });                        }                    })                }                success(res.data)            } else {                typeof fail == "function" && fail()            }        },        fail: function (res) {            console.log(res);            if (res.errMsg == 'request:fail ') {                wx.showModal({                    title: '提示',                    content: '当前网络状态差，请重试',                    success: function(res) {                        if (res.confirm) {                            setTimeout(function () {                                requestLoading(url, params, message, success, fail, method);                            }, 1000);                        } else if (res.cancel) {                            console.log('用户点击取消');                            wx.redirectTo({                                url:'../regist/index'                            });                        }                    }                })            }            wx.hideNavigationBarLoading();            if (message != "") {                wx.hideLoading()            }                typeof fail == "function" && fail()        },        complete: function (res) {        },    })}