【vue开发】vue导出Excel表格教程demo

前端工作量最多的就是需求，需求就是一直在变，比如当前端数据写完之后，需要用Excel把数据下载出来；再比如前端在没有数据库想写些demo玩时，也是很好的选择。

第一步安装依赖包,修改配置

1、装依赖：

　　cnpm install  file-saver

　　cnpm install xlsx

       cnpm install script-loader

2、修改配置：

在如下截图文件位置新增一行即可：'vendor': path.resolve(__dirname, '../src/vendor'),//新增加一行

 

 【提示】若新建的项目出现严格模式报错，修改如下文件，增加src/*

 

 

第二步在项目中创建一个新的文件夹用于存放Blob和Export2Excel两个js文件（需要把这个两个文件复制到自己的目录中）

 

 Export2Excel.js源码如下：

/* eslint-disable */
require('script-loader!file-saver');
// require('script-loader!src/vendor/Blob');
// require('script-loader!./Blob'); //这个本来有但是去掉功能暂无受影响
require('script-loader!xlsx/dist/xlsx.core.min');function generateArray(table) {var out = [];var rows = table.querySelectorAll('tr');var ranges = [];for (var R = 0; R < rows.length; ++R) {var outRow = [];var row = rows[R];var columns = row.querySelectorAll('td');for (var C = 0; C < columns.length; ++C) {var cell = columns[C];var colspan = cell.getAttribute('colspan');var rowspan = cell.getAttribute('rowspan');var cellValue = cell.innerText;if (cellValue !== "" && cellValue == +cellValue) cellValue = +cellValue;//Skip rangesranges.forEach(function (range) {if (R >= range.s.r && R <= range.e.r && outRow.length >= range.s.c && outRow.length <= range.e.c) {for (var i = 0; i <= range.e.c - range.s.c; ++i) outRow.push(null);}});//Handle Row Spanif (rowspan || colspan) {rowspan = rowspan || 1;colspan = colspan || 1;ranges.push({s: {r: R, c: outRow.length}, e: {r: R + rowspan - 1, c: outRow.length + colspan - 1}});};//Handle ValueoutRow.push(cellValue !== "" ? cellValue : null);//Handle Colspanif (colspan) for (var k = 0; k < colspan - 1; ++k) outRow.push(null);}out.push(outRow);}return [out, ranges];
};function datenum(v, date1904) {if (date1904) v += 1462;var epoch = Date.parse(v);return (epoch - new Date(Date.UTC(1899, 11, 30))) / (24 * 60 * 60 * 1000);
}function sheet_from_array_of_arrays(data, opts) {var ws = {};var range = {s: {c: 10000000, r: 10000000}, e: {c: 0, r: 0}};for (var R = 0; R != data.length; ++R) {for (var C = 0; C != data[R].length; ++C) {if (range.s.r > R) range.s.r = R;if (range.s.c > C) range.s.c = C;if (range.e.r < R) range.e.r = R;if (range.e.c < C) range.e.c = C;var cell = {v: data[R][C]};if (cell.v == null) continue;var cell_ref = XLSX.utils.encode_cell({c: C, r: R});if (typeof cell.v === 'number') cell.t = 'n';else if (typeof cell.v === 'boolean') cell.t = 'b';else if (cell.v instanceof Date) {cell.t = 'n';cell.z = XLSX.SSF._table[14];cell.v = datenum(cell.v);}else cell.t = 's';ws[cell_ref] = cell;}}if (range.s.c < 10000000) ws['!ref'] = XLSX.utils.encode_range(range);return ws;
}function Workbook() {if (!(this instanceof Workbook)) return new Workbook();this.SheetNames = [];this.Sheets = {};
}function s2ab(s) {var buf = new ArrayBuffer(s.length);var view = new Uint8Array(buf);for (var i = 0; i != s.length; ++i) view[i] = s.charCodeAt(i) & 0xFF;return buf;
}export function export_table_to_excel(id) {var theTable = document.getElementById(id);console.log('a')var oo = generateArray(theTable);var ranges = oo[1];/* original data */var data = oo[0];var ws_name = "SheetJS";console.log(data);var wb = new Workbook(), ws = sheet_from_array_of_arrays(data);/* add ranges to worksheet */// ws['!cols'] = ['apple', 'banan'];ws['!merges'] = ranges;/* add worksheet to workbook */wb.SheetNames.push(ws_name);wb.Sheets[ws_name] = ws;var wbout = XLSX.write(wb, {bookType: 'xlsx', bookSST: false, type: 'binary'});saveAs(new Blob([s2ab(wbout)], {type: "application/octet-stream"}), "test.xlsx")
}function formatJson(jsonData) {console.log(jsonData)
}export function export_json_to_excel(th, jsonData, defaultTitle) {/* original data */var data = jsonData;data.unshift(th);var ws_name = "SheetJS";var wb = new Workbook(), ws = sheet_from_array_of_arrays(data);/* add worksheet to workbook */wb.SheetNames.push(ws_name);wb.Sheets[ws_name] = ws;var wbout = XLSX.write(wb, {bookType: 'xlsx', bookSST: false, type: 'binary'});var title = defaultTitle || '列表'saveAs(new Blob([s2ab(wbout)], {type: "application/octet-stream"}), title + ".xlsx")
}

Blob.js源码如下：

/* eslint-disable */
/* Blob.js*//*global self, unescape */
/*jslint bitwise: true, regexp: true, confusion: true, es5: true, vars: true, white: true,plusplus: true *//*! @source http://purl.eligrey.com/github/Blob.js/blob/master/Blob.js */(function (view) {"use strict";view.URL = view.URL || view.webkitURL;if (view.Blob && view.URL) {try {new Blob;return;} catch (e) {}}// Internally we use a BlobBuilder implementation to base Blob off of// in order to support older browsers that only have BlobBuildervar BlobBuilder = view.BlobBuilder || view.WebKitBlobBuilder || view.MozBlobBuilder || (function (view) {varget_class = function (object) {return Object.prototype.toString.call(object).match(/^\[object\s(.*)\]$/)[1];}, FakeBlobBuilder = function BlobBuilder() {this.data = [];}, FakeBlob = function Blob(data, type, encoding) {this.data = data;this.size = data.length;this.type = type;this.encoding = encoding;}, FBB_proto = FakeBlobBuilder.prototype, FB_proto = FakeBlob.prototype, FileReaderSync = view.FileReaderSync, FileException = function (type) {this.code = this[this.name = type];}, file_ex_codes = ("NOT_FOUND_ERR SECURITY_ERR ABORT_ERR NOT_READABLE_ERR ENCODING_ERR "+ "NO_MODIFICATION_ALLOWED_ERR INVALID_STATE_ERR SYNTAX_ERR").split(" "), file_ex_code = file_ex_codes.length, real_URL = view.URL || view.webkitURL || view, real_create_object_URL = real_URL.createObjectURL, real_revoke_object_URL = real_URL.revokeObjectURL, URL = real_URL, btoa = view.btoa, atob = view.atob, ArrayBuffer = view.ArrayBuffer, Uint8Array = view.Uint8Array, origin = /^[\w-]+:\/*\[?[\w\.:-]+\]?(?::[0-9]+)?/;FakeBlob.fake = FB_proto.fake = true;while (file_ex_code--) {FileException.prototype[file_ex_codes[file_ex_code]] = file_ex_code + 1;}// Polyfill URLif (!real_URL.createObjectURL) {URL = view.URL = function (uri) {varuri_info = document.createElementNS("http://www.w3.org/1999/xhtml", "a"), uri_origin;uri_info.href = uri;if (!("origin" in uri_info)) {if (uri_info.protocol.toLowerCase() === "data:") {uri_info.origin = null;} else {uri_origin = uri.match(origin);uri_info.origin = uri_origin && uri_origin[1];}}return uri_info;};}URL.createObjectURL = function (blob) {vartype = blob.type, data_URI_header;if (type === null) {type = "application/octet-stream";}if (blob instanceof FakeBlob) {data_URI_header = "data:" + type;if (blob.encoding === "base64") {return data_URI_header + ";base64," + blob.data;} else if (blob.encoding === "URI") {return data_URI_header + "," + decodeURIComponent(blob.data);}if (btoa) {return data_URI_header + ";base64," + btoa(blob.data);} else {return data_URI_header + "," + encodeURIComponent(blob.data);}} else if (real_create_object_URL) {return real_create_object_URL.call(real_URL, blob);}};URL.revokeObjectURL = function (object_URL) {if (object_URL.substring(0, 5) !== "data:" && real_revoke_object_URL) {real_revoke_object_URL.call(real_URL, object_URL);}};FBB_proto.append = function (data/*, endings*/) {var bb = this.data;// decode data to a binary stringif (Uint8Array && (data instanceof ArrayBuffer || data instanceof Uint8Array)) {varstr = "", buf = new Uint8Array(data), i = 0, buf_len = buf.length;for (; i < buf_len; i++) {str += String.fromCharCode(buf[i]);}bb.push(str);} else if (get_class(data) === "Blob" || get_class(data) === "File") {if (FileReaderSync) {var fr = new FileReaderSync;bb.push(fr.readAsBinaryString(data));} else {// async FileReader won't work as BlobBuilder is syncthrow new FileException("NOT_READABLE_ERR");}} else if (data instanceof FakeBlob) {if (data.encoding === "base64" && atob) {bb.push(atob(data.data));} else if (data.encoding === "URI") {bb.push(decodeURIComponent(data.data));} else if (data.encoding === "raw") {bb.push(data.data);}} else {if (typeof data !== "string") {data += ""; // convert unsupported types to strings
        }// decode UTF-16 to binary string
        bb.push(unescape(encodeURIComponent(data)));}};FBB_proto.getBlob = function (type) {if (!arguments.length) {type = null;}return new FakeBlob(this.data.join(""), type, "raw");};FBB_proto.toString = function () {return "[object BlobBuilder]";};FB_proto.slice = function (start, end, type) {var args = arguments.length;if (args < 3) {type = null;}return new FakeBlob(this.data.slice(start, args > 1 ? end : this.data.length), type, this.encoding);};FB_proto.toString = function () {return "[object Blob]";};FB_proto.close = function () {this.size = 0;delete this.data;};return FakeBlobBuilder;}(view));view.Blob = function (blobParts, options) {var type = options ? (options.type || "") : "";var builder = new BlobBuilder();if (blobParts) {for (var i = 0, len = blobParts.length; i < len; i++) {if (Uint8Array && blobParts[i] instanceof Uint8Array) {builder.append(blobParts[i].buffer);}else {builder.append(blobParts[i]);}}}var blob = builder.getBlob(type);if (!blob.slice && blob.webkitSlice) {blob.slice = blob.webkitSlice;}return blob;};var getPrototypeOf = Object.getPrototypeOf || function (object) {return object.__proto__;};view.Blob.prototype = getPrototypeOf(new view.Blob());
}(typeof self !== "undefined" && self|| typeof window !== "undefined" && window|| this
));

第三步在你组件中使用

tHeader:标题

filterVal：字段名

tableData:前端请求的数据

我写的demo组件源码如下：

<template><!-- 这是导出Excel的demo --><div class="hello "><van-field v-model="info.username" label="用户" placeholder="请输入用户名" /><van-field v-model="info.sex" label="性别" placeholder="请输入性别" /><van-field v-model="info.age" label="年龄" placeholder="请输入年龄" /><van-field v-model="info.phone" label="手机" placeholder="请输入手机号" /><van-field v-model="info.city" label="城市" placeholder="请输入城市" /><van-button class="margin-top" type="primary" @click="exportTo()">继续添加</van-button><van-button class="margin-left" type="primary" @click="exportToExcel()">导出表格</van-button><div class="text-left mid-auto margin-top"><div v-for="item in intData">{{item.username}}-{{item.sex}}-{{item.age}}-{{item.phone}}-{{item.city}}</br></div></div></div>
</template><script>import Vue from 'vue';import {Button,Field} from 'vant';import 'vant/lib/index.css';Vue.use(Button);Vue.use(Field);export default {name: 'HelloWorld',data() {return {info: {username: '',phone: '',city: "",sex: "",age: "",},tableData: [],intData: [],}},methods: {exportTo() {//push数据 接触双向绑定this.intData.push(JSON.parse(JSON.stringify(this.info)));this.tableData = this.intData;console.log(this.tableData)// let {username,phone,city,sex,age} = this.info;//表单置空继续输入this.info.username = "";this.info.phone = "";this.info.city = "";this.info.sex = "";this.info.age = "";},exportToExcel() {console.log('提交了', this.tableData)//excel数据导出require.ensure([], () => {const {export_json_to_excel} = require('../vendor/Export2Excel');const tHeader = ['用户名', '性别', '年龄', '手机号', '城市', ];const filterVal = ['username', 'sex', 'age', 'phone', 'city'];const list = this.tableData;const data = this.formatJson(filterVal, list);export_json_to_excel(tHeader, data, '列表excel');})},formatJson(filterVal, jsonData) {return jsonData.map(v => filterVal.map(j => v[j]))}}}
</script><!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>h1,h2 {font-weight: normal;}ul {list-style-type: none;padding: 0;}li {display: inline-block;margin: 0 10px;}a {color: #42b983;}.text-left {text-align: left;}.mid-auto {width: 86%;margin: auto;}.margin-top {margin-top: 20px;}.margin-left {margin-left: 20px;}
</style>

demo截图如下：

 导出的表格如下：

 

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