const db = wx.cloud.database({});

let blogId = app.globalData.test.detailId;

db.collection(‘test’).doc(blogId).get().then(res => {

console.log(‘db读取成功’, res.data);

let data = res.data;

this.setData({

cover: data.cover,

title: data.title,

content: data.content

});

})

.catch(e => {

wx.showToast({

title: ‘db读取失败’,

icon: ‘none’

});

});

有没有大神可以说说各行代表的意思吗？为什么读不到数据