jc-task-mini/app.js

import gulpError from './utils/gulpError';
import userModel from './utils/userModel'
import {
    currentUser
} from './api/api'
App({
    onLaunch() {
        let that = this;
        wx.getSystemInfo({
            success: function (res) {
                that.globalData.statusBarHeight = res.statusBarHeight
                console.log(res)
            }
        })
        const token = wx.getStorageSync('token') || '';
        if (!token) {
            wx.login({
                success: res1 => {
                    // 发送 res.code 到后台换取 openId, sessionKey, unionId
                    console.log(res1.code)

                    const param = {
                        code: res1.code
                    }
                    userModel.login(param).then(res => {
                        currentUser().then(res => {
                            this.globalData.currentUser = res.data
                            wx.reLaunch({
                                url: '/pages/index/index',
                            })
                        })
                    }).catch(() => {
                        wx.reLaunch({
                            url: '/pages/login/login',
                        })
                    })
                }
            })
        } else {
            currentUser().then(res => {
                this.globalData.currentUser = res.data
                wx.reLaunch({
                    url: '/pages/index/index',
                })
            })
        }
    },
    onShow() {
        if (gulpError !== 'gulpErrorPlaceHolder') {
            wx.redirectTo({
                url: `/pages/gulp-error/index?gulpError=${gulpError}`,
            });
        }
    },
    globalData: {
        currentUser: {},
        statusBarHeight: 0
    }
});