在商城中，訪(fǎng)問(wèn)個(gè)人中心或者購(gòu)物車(chē)前先判斷是否登錄，從緩存中讀取用戶(hù)名，密碼等，若無(wú)登錄，或者清楚緩存，則需登錄。 
下面以本人做的登錄為例，login.js頁(yè)面

1. // pages/login/login.js Page({ onLoad:function(options){ // 頁(yè)面初始化 options為頁(yè)面跳轉(zhuǎn)所帶來(lái)的參數(shù) var token = wx.getStorageSync('token') var name = wx.getStorageSync('name') var pwd = wx.getStorageSync('pwd') if(token ==''){ wx.navigateTo({ url: '/pages/index/index' }) } if(name!=''){ if(pwd!=''){ wx.redirectTo({ url: '../my/my?name='+name+'&pwd='+pwd+'' }) } } }, //用戶(hù)名和密碼輸入框事件 usernameInput:function(e){ // console.log(e) this.setData({ userN:e.detail.value }) }, passwordInput:function(e){ this.setData({ passW:e.detail.value }) }, //登錄按鈕點(diǎn)擊事件，調(diào)用參數(shù)要用：this.data.參數(shù)； //設(shè)置參數(shù)值，要使用this.setData({}）方法 loginBtnClick:function(a){ // console.log(a) var that=this if(this.data.userN.length == 0 || this.data.passW.length == 0){ this.setData({ infoMess:'溫馨提示：用戶(hù)名或密碼不能為空！', }) }else{ wx.request({ url: 'http://www.tpshop.com/index.PHP?m=Api&c=User&a=login', data: { username: this.data.userN, password: this.data.passW, unique_id:'123456' }, header: { 'content-type': 'application/json' }, success: function(res) { // console.log(res.data.result) if(res.data.status == -1){ userName:'缺少參數(shù)' }else{ //存用戶(hù)session // wx.setStorageSync('token', res.data.result.token) // wx.setStorageSync('user_id', res.data.result.user_id) // wx.setStorageSync('name', that.data.userN) // wx.setStorageSync('pwd', that.data.passW) wx.setStorage({ key:'name', data:res.data.result.mobile, }) wx.setStorage({ key:'token',