vue中Excel的导入导出
- 安装依赖
npm install -S file-saver xlsx（这里其实安装了2个依赖）
npm install -D script-loader
- main.js中全局引入
import Blob from './excel/Blob.js'
import Export2Excel from './excel/Export2Excel.js'
- webpack.base.conf.js做如下修改：
resolve: {
extensions: ['.js', '.vue', '.json'],
alias: {
'vue$': 'vue/dist/vue.esm.js',
'@': resolve('src'),
'scss_vars': '@/styles/vars.scss',
'excel': path.resolve(__dirname, '../src/excel'),//新增加一行
}
},
- 引入两个js文件
Blob.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 */
(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));
export2Excel.js
/* eslint-disable */
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")
}
- 使用
<template>
<div>
<el-button @click="exportExcel">导出</el-button>
<el-upload
class="upload-demo"
action
:on-change="handleChange"
:on-remove="handleRemove"
:on-exceed="handleExceed"
:limit="2"
accept="application/vnd.openxmlformats-
officedocument.spreadsheetml.sheet, application/vnd.ms-excel"
:auto-upload="false"
ref="inputer"
>
<el-button size="small" type="primary">点击上传</el-button>
</el-upload>
<el-table
:data="list"
element-loading-text="Loading"
border
fit
highlight-current-row
>
<el-table-column type="selection" width="55"></el-table-column>
<el-table-column align="center" label="ID" width="95">
<template slot-scope="scope">{
{
scope.$index }}</template>
</el-table-column>
<el-table-column label="身份证号码">
<template slot-scope="scope">{
{
scope.row.idCard }}</template>
</el-table-column>
<el-table-column label="姓名" width="110" align="center">
<template slot-scope="scope">
<span>{
{
scope.row.name }}</span>
</template>
</el-table-column>
<el-table-column label="险种" width="110" align="center">
<template slot-scope="scope">
<span>{
{
scope.row.siType }}</span>
</template>
</el-table-column>
<el-table-column label="社保属性" width="110" align="center">
<template slot-scope="scope">
<span>{
{
scope.row.siProp }}</span>
</template>
</el-table-column>
<el-table-column label="住址" width="110" align="center">
<template slot-scope="scope">{
{
scope.row.addr }}</template>
</el-table-column>
<el-table-column label="年龄" width="110" align="center">
<template slot-scope="scope">{
{
scope.row.sex }}</template>
</el-table-column>
<el-table-column class-name="status-col" label="性别" width="80" align="center">
<template slot-scope="scope">
<el-tag :type="scope.row.sex | statusFilter">{
{
scope.row.sex }}</el-tag>
</template>
</el-table-column>
<el-table-column align="center" prop="created_at" label="生日" width="200">
<template slot-scope="scope">
<i class="el-icon-time" />
<span>{
{
scope.row.birthday }}</span>
</template>
</el-table-column>
</el-table>
</div>
</template>
<script>
eport default {
methods: {
exportExcel() {
require.ensure([], () => {
const {
export_json_to_excel
} = require("@/assets/excel/export2Excel.js");
const tHeader = [
"ID",
"身份证号码",
"姓名",
"险种",
"社保属性",
"住址",
"年龄",
"性别",
"生日"
];
// 上面设置Excel的表格第一行的标题
const filterVal = [
"index",
"id",
"name",
"siType",
"siProp",
"addr",
"age",
"sex",
"birthday"
];
const list = this.list; //把data里的tableData存到list
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]));
},
handleChange(file, fileList) {
this.fileTemp = file.raw;
if (this.fileTemp) {
if (
this.fileTemp.type ==
"application/vnd.openxmlformats-officedocument.spreadsheetml.sheet" ||
this.fileTemp.type == "application/vnd.ms-excel"
) {
this.importfxx(this.fileTemp);
} else {
this.$message({
type: "warning",
message: "附件格式错误，请删除后重新上传！"
});
}
} else {
this.$message({
type: "warning",
message: "请上传附件！"
});
}
},
//超出最大上传文件数量时的处理方法
handleExceed() {
this.$message({
type: "warning",
message: "超出最大上传文件数量的限制！"
});
return;
},
//移除文件的操作方法
handleRemove(file, fileList) {
this.fileTemp = null;
},
importfxx(obj) {
let _this = this;
let inputDOM = this.$refs.inputer;
// 通过DOM取文件数据
this.file = event.currentTarget.files[0];
var rABS = false; //是否将文件读取为二进制字符串
var f = this.file;
var reader = new FileReader();
//if (!FileReader.prototype.readAsBinaryString) {
FileReader.prototype.readAsBinaryString = function(f) {
var binary = "";
var rABS = false; //是否将文件读取为二进制字符串
var pt = this;
var wb; //读取完成的数据
var outdata;
var reader = new FileReader();
reader.onload = function(e) {
var bytes = new Uint8Array(reader.result);
var length = bytes.byteLength;
for (var i = 0; i < length; i++) {
binary += String.fromCharCode(bytes[i]);
}
//此处引入，用于解析excel
var XLSX = require("xlsx");
if (rABS) {
wb = XLSX.read(btoa(fixdata(binary)), {
//手动转化
type: "base64"
});
} else {
wb = XLSX.read(binary, {
type: "binary"
});
}
outdata = XLSX.utils.sheet_to_json(wb.Sheets[wb.SheetNames[0]]);
//outdata就是读取的数据（不包含标题行即表头，表头会作为对象的下标）
//此处可对数据进行处理
let arr = [];
outdata.map(v => {
let obj = {
}
obj.id = v['身份证号码']
obj.siType = v['险种']
obj.siProp = v['社保属性']
obj.addr = v['住址']
obj.sex = v['性别']
obj.birthday = v['生日']
arr.push(obj)
});
console.log(...arr,'新导入数据');
return arr;
};
reader.readAsArrayBuffer(f);
};
if (rABS) {
reader.readAsArrayBuffer(f);
} else {
reader.readAsBinaryString(f);
}
},
}
};
</script>