先写好两个js文件 直接复制粘贴
文件目录是这样的
Bolb.js
/* 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 */
const blob = 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);
};
}
exports.blob = blob;Export2Excel.js
/* eslint-disable */
require('script-loader!file-saver');
// require('script-loader!./Blob');
// require('script-loader!xlsx/dist/xlsx.core.min');
// require('script-loader!xlsx-style/xlsx');
require('script-loader!xlsx-style/dist/xlsx.core.min');
require('script-loader!xlsx-style/xlsx');
// 设置表格中cell默认的字体，居中，颜色等
/**
{ auto: 1} specifying automatic values
{ rgb: "FFAA00" } specifying a hex ARGB value
{ theme: "1", tint: "-0.25"} specifying an integer index to a theme color and a tint value (default 0)
{ indexed: 64} default value for fill.bgColor
*/
const defaultCellStyle = {
font: { name: "宋体", sz: 11, color: { rgb: "000000" } },
border: {
color: { auto: 1 }
},
alignment: {
/// 自动换行
wrapText: 1,
// 居中
horizontal: "center",
vertical: "center",
indent: 0
}
};
// 从json转化为sheet，xslx中没有aoaToSheet的方法，该方法摘自官方test
function sheet_from_array_of_arrays(data) {
const ws = {};
const range = { s: { c: 10000000, r: 10000000 }, e: { c: 0, r: 0 } };
for (let R = 0; R !== data.length; ++R) {
for (let 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;
// 这里生成cell的时候，使用上面定义的默认样式
const cell = { v: data[R][C], s: defaultCellStyle };
if (cell.v == null) continue;
const cell_ref = XLSX.utils.encode_cell({ c: C, r: R });
/* TEST: proper cell types and value handling */
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;
}
}
/* TEST: proper range */
if (range.s.c < 10000000) ws['!ref'] = XLSX.utils.encode_range(range);
// 自适应宽度
return ws;
}
export function formatJson(filterVal, jsonData) {
return jsonData.map(v => filterVal.map(j => v[j]))
}
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';
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;
ws['!cols'] = [{ wch: 4 }, { wch: 8 }];
var wbout = XLSX.write(wb, {
bookType: 'xlsx',
bookSST: false,
type: 'binary',
});
saveAs(
new Blob([s2ab(wbout)], {
type: 'application/octet-stream',
}),
'test.xlsx'
);
}
/**
* 计算表格宽度
* @param {*} th
* @param {*} ws
* @returns
*/
function matchWidth(th) {
let retn = []
console.log(th);
th.forEach(element => {
retn.push({ wch: (element + "").length * 2 })
});
return retn
}
/**
* 多sheet导出
* @param {Array} th 表头
* @param {Array} jsonDatas 数据集
* @param {String} defaultTitle 导出的excel名称
* @param {Array} sheetNames sheet名称集
*/
export function export_season_to_excel(th, jsonDatas, defaultTitle, sheetNames) {
var wb = new Workbook()
jsonDatas.forEach((item, index) => {
var data = item;
data.unshift(th);
var ws_name = sheetNames[index];
var 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")
}
export function export_json_to_excel(th, jsonData, defaultTitle) {
/* original data */
var data = jsonData;
data.unshift(th);
var ws_name = 'sheet1';
var wb = new Workbook(),
ws = sheet_from_array_of_arrays(data);
/* add worksheet to workbook */
th.push()
// 自适应宽度再这里设置
// ws['!cols'] = matchWidth(th)// [{wch:100},{wch:200}];
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'
);
}
然后安装所需依赖
npm install file-saver -S
npm install script-loader -S
npm install xlsx -S
npm install xlsx-style -S 然后是使用方法
// 引入文件
import { export_json_to_excel } from '@/vendor/Export2Excel.js'
// 表头
const tHeader = this.tableData.map((e) => e.label)//['运维单位','运维负责人','负责人电话']
// table表格中对应的属性名
const filterVal = this.tableData.map((e) => e.prop)//['name','manager','phone']
// 表格绑定数据转json
const data = this.formatJson(filterVal, this.exportMultipleSelection)//第二个参数是表格数据 [{name:'疼训',manager:'张三',phone:'123456'},{name:'精东',manager:'李四',phone:'123456'},]
export_json_to_excel(
tHeader,//表头
data,//列表数据
'预警清单' + new Date().toLocaleDateString(),//文件名
)
// 导出列表格式化数据的方法
formatJson(filterVal, jsonData) {
return jsonData.map((v, index) =>
filterVal.map((j) => {
//这里可以做一些判断 比如后端给时间一般都是时间戳 在这里判断prop后单独处理时间戳
if (j === 'occurTime') {//预警时间
return v.occurTime ? this.$format(v.occurTime) : "";
} else {
return v[j]//如果是直接用后端的值就直接这样就好了
}
}),
)
}
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