demo 地址: https://github.com/iotjin/Jh_weapp
npm install node-xlsx
云函数
// 云函数入口文件
// npm install node-xlsx
const cloud = require('wx-server-sdk')
cloud.init({
env: cloud.DYNAMIC_CURRENT_ENV
})
//操作excel用的类库
var xlsx = require('node-xlsx');
const db = cloud.database()
const _ = db.command
// 云函数入口函数
exports.main = async (event, context) => {
// var momdelArr = event.dicArr
// db.collection('Table')
// .where({
// paperId: '84e72bb95f263a98004820c865f5d8c9'
// })
// .field({
// name: true,
// })
// .limit(10)
// .get()
// .then(res => {
// console.log(res.data)
// })
var tableList = [{
'id': 0,
'name': '张三',
'birthday': '2010-1-1',
'age': 20,
},
{
'id': 1,
'name': '李四',
'birthday': '2020-1-1',
'age': 1,
}
]
var dicArr = tableList
// try {
//1,定义excel表格名
let dataCVS = 'test.xlsx'
//2，定义存储数据的
let alldata = []
let row = ['编号', '名称', '生日', '年龄'] //表属性
alldata.push(row)
for (let key in dicArr) {
let arr = []
arr.push(dicArr[key].id)
arr.push(dicArr[key].name)
arr.push(dicArr[key].birthday)
arr.push(dicArr[key].age)
alldata.push(arr)
}
//3，把数据保存到excel里
var buffer = await xlsx.build([{
name: "Sheet1",
data: alldata
}]);
//4，把excel文件保存到云存储里
let res = await cloud.uploadFile({
cloudPath: 'exportExcel/' + dataCVS,
// cloudPath: dataCVS,
fileContent: buffer, //excel二进制文件
})
// .then(res => {
// console.log(res.fileID);
// return res
// }).catch(function (err) {
// return err
// })
// return res
if (!res.fileID) {
return '上传失败'
} else {
let res2 = await cloud.getTempFileURL({
fileList: [res.fileID],
})
if (!res2.fileList.length) {
return '获取下载地址失败'
} else {
let fileUrl = res2.fileList[0].tempFileURL
console.log('文件下载链接' + fileUrl);
return fileUrl
}
}
}
/*
onLoad: function (options) {
this.exportExcel()
},
//云函数，导出Excel
exportExcel() {
let that = this
wx.cloud.callFunction({
name: "exportExcel",
data: {
// dicArr: dicArr
},
success(res) {
console.log("保存成功", res)
console.log("文件下载链接", res.result)
//复制文件路径到剪切板
that.copyFileUrl(res.result)
//下载并预览
// that.downloadExcelFile(res.result)
},
fail(res) {
console.log("保存失败", res)
}
})
},
//复制文件路径到剪切板
copyFileUrl(url) {
wx.setClipboardData({
data: url,
success: function (res) {
wx.getClipboardData({
success(res) {
console.log("复制成功",res.data) // data
}
})
// wx.showModal({
// title: '提示',
// content: '复制成功',
// success: function (res) {
// if (res.confirm) {
// console.log('确定')
// } else if (res.cancel) {
// console.log('取消')
// }
// }
// })
}
})
},
//下载并预览
downloadExcelFile(url) {
wx.downloadFile({
url: url,
success: function (res) {
const tempFilePath = res.tempFilePath;
// 保存文件
wx.saveFile({
tempFilePath,
success: function (res) {
const savedFilePath = res.savedFilePath;
// 文件预览
wx.openDocument({
filePath: savedFilePath,
success: function (res) {
console.log('打开文档成功')
},
});
},
fail: function (err) {
console.log('保存失败：', err)
}
});
},
fail: function (err) {
console.log('下载失败：', err);
},
});
},
//文件预览
openfile(filePath) {
let path = filePath;
wx.openDocument({
filePath: path,
success: (res) => {
console.log('读取成功', res)
},
fail: (err) => {
console.log('读取失败', err)
}
})
},
*/
js 代码：
/**
* 生命周期函数--监听页面加载
*/
onLoad: function (options) {
this.exportExcel()
},
//云函数，导出Excel
exportExcel() {
let that = this
wx.cloud.callFunction({
name: "exportExcel",
data: {
// dicArr: dicArr
},
success(res) {
console.log("保存成功", res)
console.log("文件下载链接", res.result)
//复制文件路径到剪切板
that.copyFileUrl(res.result)
//下载并预览
// that.downloadExcelFile(res.result)
},
fail(res) {
console.log("保存失败", res)
}
})
},
//复制文件路径到剪切板
copyFileUrl(url) {
wx.setClipboardData({
data: url,
success: function (res) {
wx.getClipboardData({
success(res) {
console.log("复制成功",res.data) // data
}
})
// wx.showModal({
// title: '提示',
// content: '复制成功',
// success: function (res) {
// if (res.confirm) {
// console.log('确定')
// } else if (res.cancel) {
// console.log('取消')
// }
// }
// })
}
})
},
//下载并预览
downloadExcelFile(url) {
wx.downloadFile({
url: url,
success: function (res) {
const tempFilePath = res.tempFilePath;
// 保存文件
wx.saveFile({
tempFilePath,
success: function (res) {
const savedFilePath = res.savedFilePath;
// 文件预览
wx.openDocument({
filePath: savedFilePath,
success: function (res) {
console.log('打开文档成功')
},
});
},
fail: function (err) {
console.log('保存失败：', err)
}
});
},
fail: function (err) {
console.log('下载失败：', err);
},
});
},
//文件预览
openfile(filePath) {
let path = filePath;
wx.openDocument({
filePath: path,
success: (res) => {
console.log('读取成功', res)
},
fail: (err) => {
console.log('读取失败', err)
}
})
},
