首先必须得先安装插件，xlsx为导入导出excel插件，file-saver为保存文件插件
npm i xlsx file-saver下载对应插件全程复制粘贴即可
先说导出 先创建文件Export2Excel.js
require('script-loader!file-saver');
require('./Blob');
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);
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")
}
然后创建文件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));
最后就可以使用啦 tHeader为表头,filterVal为对应的参数，tableData为表格数据，这样excel导出就完成啦
exportClick() {
require.ensure([], () => {
const { export_json_to_excel } = require('./Export2Excel')
const tHeader = ['产品名称', '本月需求', '实际', '达成比例', '订单编号', '供应商', '下单日期', '采购下单数量', '未交订单数量', '现货库存', '未来2月需求', '未来3月需求', '备货比', '说明事宜', '备注']
const filterVal = ['product_name', 'month', 'actural', 'persent', 'order_number', 'supplier_name', 'date_start', 'quantity', 'no_completed', 'total', 'month2', 'month3', 'stock_persent', 'complain', 'remark']
const list = this.tableData
const data = this.formatJson(filterVal, list)
export_json_to_excel(tHeader, data, '采购跟踪列表')
})
},
其次是导入功能
<el-upload action="" :on-change="fileonChange" :auto-upload="false":show-file-list="false" accept=".xls, .xlsx" ref="upload" :multiple="true">
<el-button type="warning" icon="el-icon-folder-add">
导入
</el-button>
</el-upload>
fileonChange(file, fileList) {
this.initalizeImport(file)
},
initalizeImport(file) {
let that = this;
if (!file) {
//如果没有文件
return false;
} else if (!/.(xls|xlsx)$/.test(file.name.toLowerCase())) {
this.$message.error("上传格式不正确，请上传xls或者xlsx格式");
return false;
}
const fileReader = new FileReader();
fileReader.onload = (ev) => {
try {
const data = ev.target.result;
const workbook = XLSX.read(data, {
type: "binary",
});
const wsname = workbook.SheetNames[0]; //导入excel的第一张表
// 导入的信息
const ws = XLSX.utils.sheet_to_json(workbook.Sheets[wsname]); //生成json表格内容
//如果一行表头，则i从0开始，如果是两行则从1开始以此类推
for (var i = 0; i < ws.length; i++) {
let type = this.getTypeid(ws[i]["类型"]) || 1; // 如果表格中该字段为空，则设置默认值
let part_number = ws[i]["料号"] || ""; // 如果表格中该字段为空，则设置默认值
let name = ws[i]["名称"] || ""; // 如果表格中该字段为空，则设置默认值
let model = ws[i]["型号"] || ""; // 如果表格中该字段为空，则设置默认值
let quantity = ws[i]["数量"] || 0; // 如果表格中该字段为空，则设置默认值
let cost = ws[i]["单价"] || 0; // 如果表格中该字段为空，则设置默认值
let price = ws[i]["金额"] || 0;// 如果表格中该字段为空，则设置默认值
let date_delivery = this.excelToJsDate(ws[i]["订单交期"]) || ""; // 如果表格中该字段为空，则设置默认值
let date_start = this.excelToJsDate(ws[i]["开始时间"]) || ""; // 如果表格中该字段为空，则设置默认值
let date_end = this.excelToJsDate(ws[i]["结束时间"]) || ""; // 如果表格中该字段为空，则设置默认值
let sn_range_min = ws[i]["SN范围"].split('-')[0] || ""; // 如果表格中该字段为空，则设置默认值
let sn_range_max = ws[i]["SN范围"].split('-')[1] || ""; // 如果表格中该字段为空，则设置默认值
let remark = ws[i]["备注"] || ""; // 如果表格中该字段为空，则设置默认值
let data = {
// 键名为绑定 el 表格的关键字，值则是 ws[i][对应表头名]
type: type,
part_number: part_number,
name: name,
model: model,
quantity: quantity,
cost: cost,
price: price,
date_delivery: date_delivery,
date_start: date_start,
date_end: date_end,
sn_range_min: sn_range_min,
sn_range_max: sn_range_max,
supplier: {
name: this.form.supplier.name
},
remark: remark
}
})
}
} catch (err) {
console.log(err)
}
}
fileReader.readAsBinaryString(file.raw);
},
