Vue实现在线编辑excel
目录luckysheet1.插件引入2.声明excel在线预览编辑组件3.excelJs分解Dom为excel文件流luckysheet文档地址exceljs文档地址前言介绍:原先平台没有要求在线编辑excel功能,excel文件是表单新增记录展现表格信息的一条记录信息,用于展示excel文件名称,支持下载功能,后续可能是客户嫌弃文件下载网速过慢,所以要求支持在线预览和编辑功能。项目周会讨论时提到
目录
前言介绍:原先平台没有要求在线编辑excel功能,excel文件是表单新增记录展现表格信息的一条记录信息,用于展示excel文件名称,支持下载功能,后续可能是客户嫌弃文件下载网速过慢,所以要求支持在线预览和编辑功能。项目周会讨论时提到这个需求,我当时的第一反应是这个功能前端来做的话,从18年开始网上生态情况,开源插件很少,功能支持完善较好的似乎都是收费的,所以当时会议就说明,实现这个功能就两种情况,公司对这个项目平台能不能支持收费插件,不能的话只能做网上找开源做阉割版。后续讨论,对这个功能采取使用不收费的插件。
,那能怎么办,作为开发那就是搬轮子造轮子呗,网上文档查询一波,发现2021了关于这方面的技术方案和开源插件都友好很多,点进来的小伙伴如果公司支持收费插件的话,可以试试这几个方案
luckysheet
官方示例项目地址 : Luckysheet: 🚀Luckysheet ,一款纯前端类似excel的在线表格,功能强大、配置简单、完全开源。
这里后面我就直接贴代码了,因为前言时说了,在线编辑预览是新增功能,所以花费时间和改动地方越少越好,原先excel文件导出功能是后台java根据模板接口返回文件流,然后前端转换二进制Blob数据对象导出的,这里功能接入就前端做下改动,没要求后端跟着同步照着luckysheet官方给出的方案做在线编辑功能。
1.插件引入
Vue引入luckysheet,index.html头部标签head中引入
<link rel='stylesheet' href='https://cdn.jsdelivr.net/npm/luckysheet@2.1.12/dist/plugins/css/pluginsCss.css' />
<link rel='stylesheet' href='https://cdn.jsdelivr.net/npm/luckysheet@2.1.12/dist/plugins/plugins.css' />
<link rel='stylesheet' href='https://cdn.jsdelivr.net/npm/luckysheet@2.1.12/dist/css/luckysheet.css' />
<link rel='stylesheet' href='https://cdn.jsdelivr.net/npm/luckysheet@2.1.12/dist/assets/iconfont/iconfont.css' />
<script src="https://cdn.jsdelivr.net/npm/luckysheet@2.1.12/dist/plugins/js/plugin.js"></script>
<script src="https://cdn.jsdelivr.net/npm/luckysheet@2.1.12/dist/luckysheet.umd.js"></script>
然后package.json中添加两项依赖
"exceljs": "^4.2.0",
"luckyexcel": "^1.0.0",
2.声明excel在线预览编辑组件
<template>
<div class="onlineExcel">
<el-card block fill shadow="never" :body-style="{ height: '100%' }">
<div class="fill flex-column">
<!-- 自定义操作栏 -->
<div class="flex-h fn-flex mar-b-xs">
<div class="fn-header__btn text-left">
<el-button
type="primary"
:disabled='this.fileurl.length === 0'
@click="SaveExcel"
>保存
</el-button>
</div>
</div>
<div
id="luckysheet"
class="flex-1 "
></div>
</div>
</el-card>
</div>
</template>
<script>
import LuckyExcel from 'luckyexcel';
import { uploadDoc, downloadDoc } from '@/api/doc';
import { saveParameter } from '@/views/ParameterManage/request';
import exportExcel from './export.js';
export default {
name: 'onlineExcel',
data() {
return {
filename: '',
attach: {},
fileurl: '',
row: {},
};
},
created() {
this.row = JSON.parse(this.$route.query.row);
const { id } = this.row.attach || {};
const { name } = this.row || {};
this.filename = name;
if (id) this.getData(id);
},
methods: {
// 获取数据
getData(id) {
downloadDoc(id).then((response) => {
const fileBlob = new Blob([response.data], { type: 'application/x-xls' });
this.fileurl = window.URL.createObjectURL(fileBlob);
const name = this.filename || decodeURI(response.headers['content-disposition']).split('=')[1];
this.bindExcel(this.fileurl, name);
});
},
// 数据绑定
bindExcel(value, name = '测试数据') {
LuckyExcel.transformExcelToLuckyByUrl(value, name, (exportJson) => {
if (exportJson.sheets === null || exportJson.sheets.length === 0) {
this.$message.warning('无法读取excel文件的内容,目前不支持xls文件,仅支持xlsx类型!');
this.$nextTick(() => {
window.luckysheet.create({
container: 'luckysheet', // 设定DOM容器的id
lang: 'zh', // 设定表格语言
showinfobar: false,
});
});
return;
}
window.luckysheet.destroy();
this.$nextTick(() => {
window.luckysheet.create({
container: 'luckysheet', // luckysheet is the container id
lang: 'zh', // 设定表格语言
row: 100, // 默认500行
showinfobar: false,
data: exportJson.sheets,
// title: exportJson.info.name,
// userInfo: exportJson.info.name.creator,
});
});
});
},
// 保存
SaveExcel() {
const fileName = this.filename.split('.')[0];
// console.log(window.luckysheet.getAllSheets());
exportExcel(window.luckysheet.getAllSheets(), fileName || '下载').then((file) => {
uploadDoc({ folderId: new Date().getTime() }, file)
.then((response) => {
const { data, msg, code } = response.data; // 无sucess
if (code === 200) {
const { id, type, beginDate, endDate, typeText } = this.row;
const form = {
typeText,
name: data[0].name.split('.')[0],
attachId: data[0].id,
type,
beginDate,
endDate,
};
saveParameter(id, form).then((res) => {
const { code, msg } = res.data || {};
this.$message[code === 200 ? 'success' : 'warning'](msg);
if (code === 200) {
localStorage.setItem('saveExcel', JSON.stringify({
date: Date.now(),
}));
}
});
} else {
this.$message.warning(msg);
}
})
.catch(() => {
this.$message.warning('保存失败!');
});
});
},
},
};
</script>
<style lang='scss' scoped>
::v-deep{
.luckysheet_info_detail_back, .luckysheet_info_detail{
display: none!important;
}
}
.onlineExcel{
width: 100%;
height: 100%;
}
h3 {
margin: 40px 0 0;
}
ul {
list-style-type: none;
padding: 0;
}
li {
display: inline-block;
margin: 0 10px;
}
a {
color: #42b983;
}
</style>
介绍上面自定义函数名作用,downloadDoc函数是请求接口返回excel文件流,然后将文件流转换为Blob二进制对象并解析出文件地址传递给luckysheet插件进行渲染。
渲染功能完成后,要开始进行编辑保存了,luckysheet官方给出的编辑保存功能在我这里有点不适用,所以做了函数封装改造,
exportExcel是封装的Dom解析成excel文件流数据作为上传文件传递给uploadDoc函数,用于excel文件重新上传,然后将此上传后返回的文件Id重新绑定到列表记录中去,saveParameter是用于编辑保存列表信息的函数。
3.excelJs分解Dom为excel文件流
/* eslint-disable */
// 文档 https://github.com/exceljs/exceljs/blob/HEAD/README_zh.md
const Excel = require('exceljs');
function setMerge(luckyMerge = {}, worksheet) {
const mergearr = Object.values(luckyMerge);
mergearr.forEach((elem) => {
// elem格式:{r: 0, c: 0, rs: 1, cs: 2}
// 按开始行,开始列,结束行,结束列合并(相当于 K10:M12),
// 合并单元格
worksheet.mergeCells(
elem.r + 1,
elem.c + 1,
elem.r + elem.rs,
elem.c + elem.cs,
);
});
}
/**
* @description 配置项设置
* @param {*} configs
* @param {*} worksheet
* @returns
*/
function setConfig(configs, worksheet) {
/**
* @description luckysheet表格配置项
* "rowlen":{}, 表格行高
* "columnlen":{}, 表格列宽
* "rowhidden":{}, 隐藏行
* "colhidden":{}, 隐藏列
* "authority":{}, 工作表保护
*/
// console.log(configs, Object.keys(configs.rowlen), Object.keys(configs.columnlen));
// 设置隐藏行
if (configs.rowhidden) {
Object.keys(configs.rowhidden).forEach((val) => {
const row = worksheet.getRow(Number(val)+1);
row.hidden = true;
});
}
// 设置隐藏列
if (configs.colhidden) {
Object.keys(configs.colhidden).forEach((val) => {
const col = worksheet.getColumn(Number(val)+1);
col.hidden = true;
});
}
// 设置显示行
if (configs.rowlen) {
Object.keys(configs.rowlen).forEach((val) => {
// 获取一个行对象。如果尚不存在,则将返回一个新的空对象
const row = worksheet.getRow((Number(val) + 1));
// console.log(configs.rowlen[val]);
// 设置特定的行高
row.height = configs.rowlen[val] - 10;
});
}
// 设置显示列
if (configs.columnlen) {
Object.keys(configs.columnlen).forEach((val) => {
// 通过键,字母和基于1的列号访问单个列
const col = worksheet.getColumn((Number(val) + 1));
// 设置特定的行高
col.width = (configs.columnlen[val] + 2) / 8;
});
}
}
/**
* @description 表格样式
* @param {*} borderType
* @param {*} style
* @param {*} color
* @returns
*/
function borderConvert(borderType, style = 1, color = '#000') {
// 对应luckysheet的config中borderinfo的的参数
if (!borderType) {
return {};
}
const luckyToExcel = {
type: {
'border-all': 'all',
'border-top': 'top',
'border-right': 'right',
'border-bottom': 'bottom',
'border-left': 'left',
},
style: {
0: 'none',
1: 'thin',
2: 'hair',
3: 'dotted',
4: 'dashDot', // 'Dashed',
5: 'dashDot',
6: 'dashDotDot',
7: 'double',
8: 'medium',
9: 'mediumDashed',
10: 'mediumDashDot',
11: 'mediumDashDotDot',
12: 'slantDashDot',
13: 'thick',
},
};
const template = {
style: luckyToExcel.style[style],
color: { argb: color.replace('#', '') },
};
const border = {};
if (luckyToExcel.type[borderType] === 'all') {
border.top = template;
border.right = template;
border.bottom = template;
border.left = template;
} else {
border[luckyToExcel.type[borderType]] = template;
}
return border;
}
/**
*
* @param {*} borders
* @param {*} row_index
* @param {*} col_index
* @returns
*/
function addborderToCell(borders) {
const border = {};
const luckyExcel = {
type: {
l: 'left',
r: 'right',
b: 'bottom',
t: 'top',
},
style: {
0: 'none',
1: 'thin',
2: 'hair',
3: 'dotted',
4: 'dashDot', // 'Dashed',
5: 'dashDot',
6: 'dashDotDot',
7: 'double',
8: 'medium',
9: 'mediumDashed',
10: 'mediumDashDot',
11: 'mediumDashDotDot',
12: 'slantDashDot',
13: 'thick',
},
};
Object.keys(borders).forEach((bor) => {
if (borders[bor].color.indexOf('rgb') === -1) {
border[luckyExcel.type[bor]] = {
style: luckyExcel.style[borders[bor].style],
color: { argb: borders[bor].color.replace('#', '') },
};
} else {
border[luckyExcel.type[bor]] = {
style: luckyExcel.style[borders[bor].style],
color: { argb: borders[bor].color },
};
}
});
return border;
}
function addCellImages(images, workbook, worksheet) {
// 通过 base64 将图像添加到工作簿
Object.keys(images).forEach((el) => {
const myBase64Image = images[el];
const imageId2 = workbook.addImage({
base64: myBase64Image.src,
extension: 'png',
});
worksheet.addImage(imageId2, {
tl: { col: myBase64Image.fromCol, row: myBase64Image.fromRow },
br: { col: myBase64Image.toCol, row: myBase64Image.toRow },
editAs: 'oneCell', // undefined, oneCell, absolute
// ext: { width: 500, height: 200 },
});
});
}
/**
* @description 设置边框
* @param {*} luckyBorderInfo
* @param {*} worksheet
* @returns
*/
function setBorder(luckyBorderInfo, worksheet) {
if (!Array.isArray(luckyBorderInfo)) return;
luckyBorderInfo.forEach((elem) => {
// 现在只兼容到borderType 为range的情况
if (elem.rangeType === 'range') {
const border = borderConvert(elem.borderType, elem.style, elem.color);
const rang = elem.range[0];
const { row, column } = rang;
for (let i = row[0] + 1; i < row[1] + 2; i++) {
for (let y = column[0] + 1; y < column[1] + 2; y++) {
worksheet.getCell(i, y).border = border;
}
}
}
if (elem.rangeType === 'cell') {
const { col_index: colIndex, row_index: rowIndex } = elem.value;
const borderData = Object.assign({}, elem.value);
delete borderData.col_index;
delete borderData.row_index;
const border = addborderToCell(borderData, rowIndex, colIndex);
// console.log('bordre', border, borderData)
worksheet.getCell(rowIndex + 1, colIndex + 1).border = border;
}
// console.log(rang.column_focus + 1, rang.row_focus + 1)
// worksheet.getCell(rang.row_focus + 1, rang.column_focus + 1).border = border
});
}
/**
* @description 背景色填充
* @param {*} bg
* @returns
*/
function fillConvert(bg) {
if (!bg) {
return {};
}
// const bgc = bg.replace('#', '')
const fill = {
type: 'pattern',
pattern: 'solid',
fgColor: { argb: bg.replace('#', '') },
};
return fill;
}
/**
* @description 字体设置
* @param {*} ff
* @param {*} fc
* @param {*} bl
* @param {*} it
* @param {*} fs
* @param {*} cl
* @param {*} ul
* @returns
*/
function fontConvert(
ff = 0,
fc = '#000000',
bl = 0,
it = 0,
fs = 10,
cl = 0,
ul = 0
) {
// luckysheet:ff(样式), fc(颜色), bl(粗体), it(斜体), fs(大小), cl(删除线), ul(下划线)
const luckyToExcel = {
0: '微软雅黑',
1: '宋体(Song)',
2: '黑体(ST Heiti)',
3: '楷体(ST Kaiti)',
4: '仿宋(ST FangSong)',
5: '新宋体(ST Song)',
6: '华文新魏',
7: '华文行楷',
8: '华文隶书',
9: 'Arial',
10: 'Times New Roman ',
11: 'Tahoma ',
12: 'Verdana',
num2bl: (num) => num !== 0,
};
// 出现Bug,导入的时候ff为luckyToExcel的val
const font = {
name: typeof ff === 'number' ? luckyToExcel[ff] : ff,
family: 1,
size: fs,
color: { argb: fc.replace('#', '') },
bold: luckyToExcel.num2bl(bl),
italic: luckyToExcel.num2bl(it),
underline: luckyToExcel.num2bl(ul),
strike: luckyToExcel.num2bl(cl),
};
return font;
}
/**
* @description 单元格排列方式
* @param {*} vt
* @param {*} ht
* @param {*} tb
* @param {*} tr
* @returns
*/
function alignmentConvert(
vt = 'default',
ht = 'default',
tb = 'default',
tr = 'default'
) {
// luckysheet:vt(垂直), ht(水平), tb(换行), tr(旋转)
const luckyToExcel = {
vertical: {
0: 'middle',
1: 'top',
2: 'bottom',
default: 'top',
},
horizontal: {
0: 'center',
1: 'left',
2: 'right',
default: 'left',
},
wrapText: {
0: false,
1: false,
2: true,
default: false,
},
textRotation: {
0: 0,
1: 45,
2: -45,
3: 'vertical',
4: 90,
5: -90,
default: 0,
},
};
const alignment = {
vertical: luckyToExcel.vertical[vt],
horizontal: luckyToExcel.horizontal[ht],
wrapText: luckyToExcel.wrapText[tb],
textRotation: luckyToExcel.textRotation[tr],
};
return alignment;
}
/**
* @description 单元格创建
* @param {*} n
* @returns
*/
function createCellPos(n) {
const ordA = 'A'.charCodeAt(0);
const ordZ = 'Z'.charCodeAt(0);
const len = ordZ - ordA + 1;
let s = '';
while (n >= 0) {
s = String.fromCharCode((n % len) + ordA) + s;
n = Math.floor(n / len) - 1;
}
return s;
}
/**
* @description 设置单元格格式,样式和值
* @param {*} cellArr
* @param {*} worksheet
* @returns
*/
function setStyleAndValue(cellArr, worksheet) {
if (!Array.isArray(cellArr)) return;
cellArr.forEach((row, rowid) => {
row.every((cell, columnid) => {
if (!cell) return true;
const fill = fillConvert(cell.bg, cell.mc);
const font = fontConvert(
cell.ff,
cell.fc,
cell.bl,
cell.it,
cell.fs,
cell.cl,
cell.ul,
);
const alignment = alignmentConvert(cell.vt, cell.ht, cell.tb, cell.tr);
let value = '';
if (cell.f) {
value = { formula: cell.f, result: cell.v };
} else if (!cell.v && cell.ct && cell.ct.s) {
// xls转为xlsx之后,内部存在不同的格式,都会进到富文本里,即值不存在与cell.v,而是存在于cell.ct.s之后
// value = cell.ct.s[0].v
cell.ct.s.forEach(arr => {
value += arr.v;
});
} else {
value = cell.v;
}
// style 填入到_value中可以实现填充色
const letter = createCellPos(columnid);
const target = worksheet.getCell(letter + (rowid + 1));
Object.keys(fill).forEach(() => {
target.fill = fill;
});
target.font = font;
target.alignment = alignment;
target.value = value;
return true;
});
});
}
export default function exportExcel(luckysheet, value) {
// 参数为luckysheet.getluckysheetfile()获取的对象
// 1.创建工作簿,可以为工作簿添加属性
const workbook = new Excel.Workbook();
// 2.创建表格,第二个参数可以配置创建什么样的工作表
if (Object.prototype.toString.call(luckysheet) === '[object Object]') {
luckysheet = [luckysheet];
}
luckysheet.forEach((table) => {
if (table.data.length === 0) return true;
// ws.getCell('B2').fill = fills.
// console.log(table, '+++++++++++');
const worksheet = workbook.addWorksheet(table.name);
const merge = (table.config && table.config.merge) || {};
const borderInfo = (table.config && table.config.borderInfo) || {};
const configs = table.config || {};
// 3.设置单元格合并,设置单元格边框,设置单元格样式,设置值
// 创建单元格并计算单元格内部内容样式及格式
setStyleAndValue(table.data, worksheet);
// 是否包含除merge和borderInfo外的luckysheet多余配置项
if (Object.keys(configs).length > 2) setConfig(configs, worksheet);
// 合并单元格
setMerge(merge, worksheet);
// 计算单元格自身样式
setBorder(borderInfo, worksheet);
// 是否包含图片
if (table.images) addCellImages(table.images, workbook, worksheet);
return true;
});
// 4.写入 buffer
const buffer = new Promise((resolve) => {
workbook.xlsx.writeBuffer().then(data => {
const blob = new Blob([data], {
type: 'application/vnd.ms-excel;charset=utf-8',
});
const File = new window.File([blob], `${value}.xlsx`, { type: 'application/vnd.ms-excel;charset=utf-8' });
File.uid = File.size + new Date().getTime(); // 文件大小+时间戳
resolve(File);
// console.log('导出成功!');
// FileSaver.saveAs(blob, `${value}.xlsx`);
});
});
return buffer;
}
应邀,附上uploadDoc函数
const uploadDoc = (form = {}, file, option) => {
const formData = new FormData();
formData.append('file', file);
formData.append('folderId', form.folderId);
formData.append('fileName', form.fileName || '');
formData.append('path', form.path || '');
return axios({
url: 'attach/upload',
method: 'post',
data: formData,
timeout: 0,
...option,
})
};
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