這個是工具類的方法，因為首頁初次加載要加載很多請求，并且是依次執行。

function requestPromiseRes(url, data) {var m = 'POST';var promise = new Promise(function (resolve, reject) {wx.request({url: url,header: {'content-type': 'application/x-www-form-urlencoded;charset=utf-8',},data: data,method: m,success: function (res1) {if (res1.data.code == "200") {// success(res1.data.data);resolve(res1.data.data);} else {console.log("數據---自行查看");resolve(res1.data);}},fail: function (err) {wx.hideLoading();wx.showModal({title: '提示',content: '網絡請求超時！',showCancel: false,success: function (res) { }})console.log("err", err);reject();}})});return promise; }

首頁

//首頁加載頁面的所有執行方法executeMethodList() {this.getSysTemConfig().then(() => {//讀取配置信息this.getBanner().then(() => {//獲取輪播圖this.getGroupOrder().then(() => {//獲取拼團列表}) })})},//讀取配置信息getSysTemConfig() {let that = thisreturn requestPromiseRes(url.url.getSysTemConfig,{}).then((res) => {app.globalData.defaultCity = res.default_city//默認推廣的城市pageParams.pageParams.endTimeScope = parseInt(res.group_over_time)//拼團結束的事件app.globalData.appointmentTimeDay = res.order_guide_time//推廣的天數}).catch((e) => { console.log("回調失敗" + e); })},//讀取輪播圖getBanner() {let that = thisreturn requestPromiseRes(url.url.getBanner,{tourist_id: app.globalData.touristId,}).then((res) => {that.setData({"bannerList": res.adsense})}).catch((e) => { console.log("回調失敗" + e); })},

首頁初次加載獲取openId

getAuthKey: function() {var that = this;return new Promise(function(resolve, reject) {// 登錄從后臺讀取openIdwx.login({success(res) {console.log(res)if (res.code) {// 發送 res.code 到后臺換取 openId, sessionKey, unionIdwx.request({url: url.url.getOpenId,data: {code: res.code},success: function(res) {console.log(res)if (res.data.code == '200') {//告知頁面開始授權訪問pageParams.pageParams.isState = "2" //告知頁面授權訪問//openId//將獲取的openid賦值到全局變量that.globalData.openId = res.data.openId;//存儲tourist對象與touristId 賦值if (res.data.tourist) {that.globalData.touristId = res.data.tourist.tourist_id;// that.globalData.touristId = "22fc3a89cebc4bb7827faad93d21820e7"that.globalData.tourist = res.data.tourist;}var res = {status: 200,}resolve(res);} else if (res.data.code == '401' || res.data.code == '402' || res.data.code == '403') {//將獲取的openid賦值到全局變量that.globalData.openId = res.data.openId;console.log("用戶未綁定跳轉")wx.navigateTo({url: '../register/register'});}},})} else {var res = {status: 300,}reject(res);console.log("獲取參數異常");}}})});},

總結

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