获取 token 值的有效方式与策略探讨

// 登录

wx.login({

    success: res => {

        // 发送 res.code 到后台换取 openId, sessionKey, unionId

        // console.log(res)

        if (res.code) {

            //发起网络请求

            wx.request({

                url: 'url',

                method: 'POST',

                data: {

                    // x: '',

                    // y: ''

                    code: res.code //将code发给后台拿token

                },

                header: {

                    'content-type': 'application/json' // 默认值

                },

                success: function(res) {

                    // 存token

                    console.log('token=' + res.data.data.token)

                    that.globalData.token = res.data.data.token; //拿到后将token存入全局变量  以便其他页面使用

                }

            })

        } else {

            console.log('获取用户登录态失败！' + res.errMsg)

        }

    }

})