vue导入excel表格
1.vue导入模版信息。进行数据操作
首先要安装 npm install file-saver npm install xlsx npm install script-loader，在src下面创建一个excel文件夹，查创建2个js（Blob.js,Export2Excel.js）
utils/vendor/Export2Excel.js文件
/* eslint-disable */
require('script-loader!file-saver');
require('script-loader!@/utils/vendor/Blob');//转二进制用 这边要写你的blob的实际地址
require('script-loader!xlsx/dist/xlsx.core.min');
// require('script-loader!xlsx-style');
import XLSX from "xlsx-style";
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) {
}
export function export_json_to_excel(th, jsonData, defaultTitle,autoWidth) {
/* original data */
var data = jsonData;
data.unshift(th);
var ws_name = "SheetJS";
var wb = new Workbook(), ws = sheet_from_array_of_arrays(data);
if (autoWidth) {
/*设置worksheet每列的最大宽度*/
const colWidth = data.map(row =>
row.map(val => {
/*先判断是否为null/undefined*/
if (val == null || val == undefined || val == "") {
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 * 1.4
};
}
})
);
let result = colWidth[0];
for (let i = 1; i < colWidth.length; i++) {
for (let j = 0; j < colWidth[i].length; j++) {
if (result[j]["wch"] < colWidth[i][j]["wch"]) {
result[j]["wch"] = colWidth[i][j]["wch"];
}
}
}
ws["!cols"] = result;
}
/* add worksheet to workbook */
wb.SheetNames.push(ws_name);
wb.Sheets[ws_name] = ws;
var dataInfo = wb.Sheets[wb.SheetNames[0]];
// 设置单元格框线
const borderAll = {
top: {
style: "thin"
},
bottom: {
style: "thin"
},
left: {
style: "thin"
},
right: {
style: "thin"
}
};
// 标题行
let arr = [
"A1",
"B1",
"C1",
"D1",
"E1",
"F1",
"G1",
"H1",
"I1",
"J1",
"K1",
"L1",
"M1",
"N1",
"O1",
"P1",
"Q1",
"R1",
"S1",
"T1",
"U1",
"V1",
"W1",
"X1",
"Y1",
"Z1",
"AA1",
"AB1",
"AC1",
"AD1",
"AE1",
"AF1",
"AG1",
"AH1",
"AI1",
"AJ1",
"AK1",
"AL1",
"AM1",
"AN1",
"AO1",
"AP1",
"AQ1",
"AR1",
"AS1",
"AT1",
"AU1",
"AV1",
"AW1",
"AX1",
"AY1",
"AZ1",
"BA1",
"BB1",
"BC1",
"BD1",
"BE1",
"BF1",
"BG1",
"BH1",
"BI1",
"BJ1",
"BK1",
"BL1",
"BM1",
"BN1",
"BO1",
"BP1",
"BQ1",
"BR1",
"BS1",
"BT1",
"BU1",
"BV1",
"BW1",
"BX1",
"BY1",
"BZ1",
];
//设置主标题样式
let style = {
font: {
// name: "宋体",
// sz: 18,
color: { rgb: "000000" },
bold: true
// italic: false,
// underline: false
},
fill: {
fgColor: {
rgb: "999999"
},
},
alignment: {
horizontal: "center",
vertical: "center"
}
}
//excel标题样式
for (var i = 0; i < th.length; i++) {
dataInfo[arr[i]].s = style;
}
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")
}
utils/vendor/Blob.js文件
/* eslint-disable */
/* Blob.js
* A Blob implementation.
* 2014-05-27
*
* By Eli Grey, http://eligrey.com
* By Devin Samarin, https://github.com/eboyjr
* License: X11/MIT
* See LICENSE.md
*/
/*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 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
;
FakeBlob.fake = FB_proto.fake = true;
while (file_ex_code--) {
FileException.prototype[file_ex_codes[file_ex_code]] = file_ex_code + 1;
}
if (!real_URL.createObjectURL) {
URL = view.URL = {};
}
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/*, endings*/) {
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 = this.data.length = 0;
};
return FakeBlobBuilder;
}(view));
view.Blob = function Blob(blobParts, options) {
var type = options ? (options.type || "") : "";
var builder = new BlobBuilder();
if (blobParts) {
for (var i = 0, len = blobParts.length; i < len; i++) {
builder.append(blobParts[i]);
}
}
return builder.getBlob(type);
};
}(typeof self !== "undefined" && self || typeof window !== "undefined" && window || this.content || this));
封装方法exportFile.js
//导出当前页,格式excel
export function exportCurrent(tableColumn,data,fileName, timeFlag) {
var heards = [];
var column = [];
tableColumn.map((item) => {
if(item.label != '操作'){
heards.push(item.label);//表头
column.push(item.prop);//data key
}
})
exportExcel(heards,column,data,fileName, timeFlag);
}
//导出当前页,格式csv
export function exportCurrentCsv(tableColumn,data) {
var heards = [];
var column = [];
tableColumn.map((item) => {
if(item.label != '操作'){
heards.push(item.label);//表头
column.push(item.prop);//data key
}
})
const exportData = data.map((item) => {
var data = {}
for(let i =0;i<column.length;i++){
let key = column[i];
data[key] = item[key]
}
return Object.values(data);
})
exportCsv([
heards,
...exportData,
]);
}
export function arrayToCsv(data, args = {}) {
let columnDelimiter = args.columnDelimiter || ",";
let lineDelimiter = args.lineDelimiter || "\n";
return data.reduce((csv, row) => {
const rowContent = Array.isArray(row)
? row.reduce((rowTemp, col) => {
let ret = rowTemp ? rowTemp + columnDelimiter : rowTemp;
if (col) {
let formatedCol = col
.toString()
.replace(new RegExp(lineDelimiter, "g"), " ");
ret += /,/.test(formatedCol)? `"${formatedCol}"` : formatedCol;
}
return ret;
}, "")
: row;
return (csv ? csv + lineDelimiter : "") + rowContent;
}, "");
}
const BOM = "\uFEFF";
var timestamp = new Date().getTime() // 生成时间戳
export function exportCsv(inputData, filename = "file" + timestamp + ".csv") { // 定义文件的名字
const csv = arrayToCsv(inputData);
if (navigator.msSaveOrOpenBlob) {
let blob = new Blob([BOM + csv], { type: "text/csv;charset=utf-8;" });
navigator.msSaveOrOpenBlob(blob, filename);
} else {
let uri = encodeURI(`data:text/csv;charset=utf-8,${BOM}${csv}`);
let downloadLink = document.createElement("a");
downloadLink.href = uri;
downloadLink.download = filename;
document.body.appendChild(downloadLink);
downloadLink.click();
document.body.removeChild(downloadLink);
}
}
export function exportExcel(tHeader,filterVal,list,fileName, timeFlag) {
if(typeof (fileName) == 'undefined' || fileName == ''){
fileName = "file" + getCurrentTime();
}else {
if (timeFlag !== false) {
fileName += getCurrentTime();
}
}
require.ensure([], () => {
const { export_json_to_excel } = require('@/utils/vendor/Export2Excel');
const data = list.map(v => filterVal.map(j => v[j]));
export_json_to_excel(tHeader, data, fileName, true);
})
}
function getCurrentTime () {
let date = new Date()
let Y = date.getFullYear()
let M = date.getMonth() + 1 < 10 ? '0' + (date.getMonth() + 1) : (date.getMonth() + 1)
let D = date.getDate() < 10 ? ('0' + date.getDate()) : date.getDate()
let hours = date.getHours()
let minutes = date.getMinutes() < 10 ? ('0' + date.getMinutes()) : date.getMinutes()
let seconds = date.getSeconds() < 10 ? ('0' + date.getSeconds()) : date.getSeconds()
date = Y.toString() + M.toString() + D.toString() + hours.toString() + minutes.toString() + seconds.toString();
return date
}
导出文件
import { exportCurrent } from '@/utils/exportFile';
//导出
handleExport() {
var data = this.tableData;
var tableColumn = this.tableColumn;
exportCurrent(tableColumn, data, '注塑班长日报');
},
注意：下载xlsx-style会提示报错
此时就需要打包补丁 用到插件patch-package
npm i patch-package --save-dev
或
yarn add patch-package --dev
修改node_modules文件后
cpt = require('./cpt' + 'able') 改为 cpt = cptable;
npx patch-package xlsx-style
执行过后会生成patches文件夹
参考内容有：
1、作者：Easter_D
链接：https://www.jianshu.com/p/bdcfe69a1a13
2、作者：无证程序员日志
链接：https://www.cnblogs.com/jydeng/p/14120348.html
3、若依框架
