小程序wx.request请求封装

// 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) {

        },
    })
}