微信模板消息提示

form: function (e) {

    var that = this;

    var fId = e.detail.formId;

    // 网络请求

    var l = 'https://api.weixin.qq.com/cgi-bin/message/wxopen/template/send?access_token=' + that.data.access_token;

    // 需要传的参数

    var d = {

      touser: that.data.openid, //用户的openid

      template_id: 'XX1hceIwI1XiQaUc5Z4qIrZnYQkYEHElSq5m6yIa0M8',//这个是申请的模板消息id，位置在微信公众平台/模板消息中添加并获取

      page: '/pages/index/index', //点击通知跳转的页面

      form_id: fId,

      data: {

        "keyword1": {

          "value": "酒店",

          "color": "#4a4a4a"

        },

        "keyword2": {

          "value": "2018-03-22",

          "color": "#9b9b9b",

        },

        "keyword3": {

          "value": "$300",

          "color": "#9b9b9b"

        }

      },

      color: '#ccc',

      emphasis_keyword: 'keyword1.DATA'

    }

    wx.request({

      url: l,

      data: d,

      method: 'POST', //此处不能有请求头

      success: function (res) {

        console.log(res, "push msg");

      },

      fail: function (err) {

        console.log(err, "push err");

      }

    });

  },

还有这个access_token该怎么获取？？