vue导出Excel文件
1、需要安装file-saver和script-loader、xlsx
npm install file-saver / yarn add file-saver npm install script-loader / yarn add script-loader npm install xlsx / yarn add xlsx
2、新建js文件（Blob.js和Export2Excel.js）
Blob.js
/* eslint-disable */
/* Blob.js*/
/*global self, unescape */
/*! @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 BlobBuilder
var BlobBuilder = view.BlobBuilder || view.WebKitBlobBuilder || view.MozBlobBuilder || (function (view) {
var
get_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 URL
if (!real_URL.createObjectURL) {
URL = view.URL = function (uri) {
var
uri_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) {
var
type = 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) {
var bb = this.data;
// decode data to a binary string
if (Uint8Array && (data instanceof ArrayBuffer || data instanceof Uint8Array)) {
var
str = ""
, 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 sync
throw 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
));
Export2Excel.js
/*导出单个sheet*/
/* eslint-disable */
require('script-loader!file-saver');
// require('script-loader!src/vendor/Blob');
require('./Blob.js');
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 ranges
ranges.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 Span
if (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 Value
outRow.push(cellValue !== "" ? cellValue : null);
//Handle Colspan
if (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);
var oo = generateArray(theTable);
var ranges = oo[1];
/* original data */
var data = oo[0];
var ws_name = "SheetJS";
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")
}
3、在需要的地方中应用
methods: {
exportFile () {
const _vm = this;
let excelList = [
{id: 1, name: 'xiaoming', age: 10},
{id: 2, name: 'xiaohong', age: 15},
]
//excel数据导出
require.ensure([], () => {
const {
export_json_to_excel
} = require('./js/Export2Excel');
// 表头
const tHeader = ['id', '名字', '年龄'];
// 字段对应
const filterVal = ['id', 'name', 'age'];
const data = _vm.formatJson(filterVal, excelList );
export_json_to_excel(tHeader, data, '人员列表');
})
}，
// 导出表格的json
formatJson(filterVal, jsonData) {
return jsonData.map(v => filterVal.map(j => v[j]))
}
}
4、导出多个sheet表
新建一个Export3Excel.js
/*导出多个sheet*/
/* eslint-disable */
require("script-loader!file-saver")
require('./Blob.js');
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 ranges
ranges.forEach(function(range) {
if (
R >= range.s.r &&
R <= range.e.r &&
outRow.length >= range.s.c &&
outRow.length <= range.e.c
) {
for ( let i = 0; i <= range.e.c - range.s.c; ++i) outRow.push(null)
}
})
//Handle Row Span
if (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 Value
outRow.push(cellValue !== "" ? cellValue : null)
//Handle Colspan
if (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)
var oo = generateArray(theTable)
var ranges = oo[1]
/* original data */
var data = oo[0]
var ws_name = "SheetJS"
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"
)
}
//主要修改此函数内的方法
export function export_json_to_excel({
multiHeader = [],
header,
data,
sheetname,
filename,
merges = [],
autoWidth = true,
bookType = "xlsx"
} = {}) {
/* original data */
filename = filename || "excel-list"
data = [...data]
for (var i = 0; i < header.length; i++) {
data[i].unshift(header[i])
}
// data.unshift(header)
for (let i = multiHeader.length - 1; i > -1; i--) {
data.unshift(multiHeader[i])
}
var ws_name = sheetname
var wb = new Workbook(),
ws = []
for (var j = 0; j < header.length; j++) {
ws.push(sheet_from_array_of_arrays(data[j]))
}
if (merges.length > 0) {
if (!ws["!merges"]) ws["!merges"] = []
merges.forEach(item => {
ws["!merges"].push(XLSX.utils.decode_range(item))
})
}
if (autoWidth) {
/*设置worksheet每列的最大宽度*/
var colWidth = []
for (var k = 0; k < header.length; k++) {
colWidth.push(
data[k].map(row =>
row.map(val => {
/*先判断是否为null/undefined*/
if (val == null) {
return {
wch: 10
}
} else if (val.toString().charCodeAt(0) > 255) {
/*再判断是否为中文*/
return {
wch: val.toString().length * 2
}
} else {
return {
wch: val.toString().length
}
}
})
)
)
}
/*以第一行为初始值*/
let result = []
for (var k = 0; k < colWidth.length; k++) {
result[k] = colWidth[k][0]
for (let i = 1; i < colWidth[k].length; i++) {
for (let j = 0; j < colWidth[k][i].length; j++) {
if (result[k][j]["wch"] < colWidth[k][i][j]["wch"]) {
result[k][j]["wch"] = colWidth[k][i][j]["wch"]
}
}
}
}
// 分别给sheet表设置宽度
for (var l = 0; l < result.length; l++) {
ws[l]["!cols"] = result[l]
}
}
/* add worksheet to workbook */
for (var k = 0; k < header.length; k++) {
wb.SheetNames.push(ws_name[k])
wb.Sheets[ws_name[k]] = ws[k]
}
var wbout = XLSX.write(wb, {
bookType: bookType,
bookSST: false,
type: "binary"
})
saveAs(
new Blob([s2ab(wbout)], {
type: "application/octet-stream"
}),
`${filename}.${bookType}`
)
}
调用：
methods: {
exportFile () {
const _vm = this;
const sheet1 = [
{id: 1, name: 'xiaoming', age: 10},
{id: 2, name: 'xiaohong', age: 15},
]
const sheet2 = [
{id: 3, name: 'xiaoming1', age: 30, sex: '女'},
{id: 4, name: 'xiaohong2', age: 20, sex: '男'},
]
const sheet1Head = ['id', '名字', '年龄']
const sheet2Head = ['id', '名字', '年龄', '性别']
const sheet1Filter = ['id', 'name', 'age']
const sheet2Filter = ['id', 'name', 'age', 'sex']
let excelDatas = [
{
tHeader: sheet1Head, // sheet表一头部
filterVal: sheet1Filter, // 表一的数据字段
tableDatas: sheet1, // 表一的整体json数据
sheetName: "sheet1"// 表一的sheet名字
},
{
tHeader: sheet2Head, // sheet表二头部
filterVal: sheet2Filter , // 表二的数据字段
tableDatas: sheet2, // 表二的整体json数据
sheetName: "sheet2"// 表二的sheet名字
},
]
this.json2excel(excelDatas, "人员列表", true, "xlsx")
}，
// 导出excel方法引用
json2excel(tableJson, filenames, autowidth, bookTypes) {
const that = this
//引用插件
import("。/js/Export3Excel").then(excel => {
let tHeader = []
let dataArr = []
let sheetnames = []
for (let i in tableJson) {
tHeader.push(tableJson[i].tHeader)
dataArr.push(that.formatJson(tableJson[i].filterVal, tableJson[i].tableDatas))
sheetnames.push(tableJson[i].sheetName)
}
excel.export_json_to_excel({
header: tHeader,
data: dataArr,
sheetname: sheetnames,
filename: filenames,
autoWidth: autowidth,
bookType: bookTypes
})
})
}
}
这样就可以根据自己的需求去导出一个sheet或者两个sheet的Excel了！
希望大佬看到有不对的地方，提出博主予以改正！
