vue+element + table将选中的数据导出为excel（导出的是当前页选中的数据）
1、安装插件
npm install file-saver --save
npm install xlsx --save
npm install script-loader -D
2、在src文件夹下新建 excel文件夹，并在excel文件夹下新建 Blob.js 和 Export2Excel.js
3、使用：
（1） 如果项目中有很多地方用到导出数据成表格，则在 main.js中引入 Blob.js 和 Export2Excel.js（文章结尾处附 Blob.js 和 Export2Excel.js 代码）
//在main.js中
// 注意引入 Blob.js 和 Export2Excel.js 的路径
import Blob from './excel/Blob.js'
import Export2Excel from './excel/Export2Excel.js'
（2） 如果项目中只有一个地方用到，则在要使用到的页面里引入：
4、以下以在项目中的某一个地方使用为例：
<template>
<div>
<el-button size="mini" type="primary" @click="handleExport">导出</el-button>
<el-table id="export-table" :data="tableData" style="width: 100%" @selection-change="handleSelectionChange">
<el-table-column type="selection" width="50" align="center"></el-table-column>
<el-table-column prop="userName" label="姓名" width="120" align="center" :show-overflow-tooltip="true"></el-table-column>
<el-table-column prop="sex" label="性别" width="60" align="center" :show-overflow-tooltip="true">
<template slot-scope="scope">{
{
scope.row.sex | sexList}}</template>
</el-table-column>
<el-table-column prop="jobName" label="应聘岗位" width="180" align="center" :show-overflow-tooltip="true"></el-table-column>
<el-table-column prop="workAge" label="工作经验" width="80" align="center" :show-overflow-tooltip="true">
<template slot-scope="scope">{
{
scope.row.workAge === 0 ? '无' : scope.row.workAge+ '年' }}</template>
</el-table-column>
<el-table-column prop="eduLevelName" label="学历" width="100" align="center" :show-overflow-tooltip="true"></el-table-column>
<el-table-column label="操作" width="100" align="center">
<template slot-scope="scope">
<el-button @click="handleClick(scope.row)" type="text" size="small" class="other-color">查看</el-button>
</template>
</el-table-column>
</el-table>
</div>
</template>
<script>
import {
shortTime } from "@/utils/tool";
import Blob from '@/excel/Blob'
import Export2Excel from '@/excel/Export2Excel.js'
export default {
data() {
return {
selectList: [], // 选中的数据
}
},
methods: {
//选中某条数据时
handleSelectionChange(row) {
this.selectList = row; // 将选中的数据给selectList
// console.log(this.selectList)
},
handleExport() {
if (this.selectList.length === 0) {
this.$message({
message: '请至少选择一条需要导出的数据',
type: 'warning'
});
return;
}
this.$confirm('该操作将导出选中的数据，是否继续', '提示', {
confirmButtonText: '确定',
cancelButtonText: '取消',
type: 'warning'
}).then(() => {
//导出
require.ensure([], () => {
const {
export_json_to_excel } = require('@/excel/Export2Excel'); //注意这个Export2Excel路径
const tableHeader = ['姓名', '性别', '应聘岗位', '工作经验', '学历']; // 设置Excel表格的表头
const filterVal = ['userName', 'sex', 'jobName', 'workAge', 'eduLevelName']; // 跟表格表头对应的绑定的prop
let list = this.filterTableData(JSON.parse(JSON.stringify(this.selectList))); // this.selectList为选中的要导出的数据，用filterTableData方法先处理一下数据格式(要进行深度拷贝，以免过滤的时候，影响页面上展示的数据)，再存到list
let data = this.formatJson(filterVal, list);
export_json_to_excel(tableHeader, data, '简历'); //最后一个是导出表格的名字
})
}).catch(() => {
});
},
formatJson(filterVal, Data) {
return Data.map(v => filterVal.map(j => v[j]))
},
//导出数据前对数据处理
filterTableData(data) {
data.forEach(item => {
item.applyDate = shortTime(item.applyDate) // 将导出的时间转换成'YYYY-MM-DD'格式
item.workAge = item.workAge + '年'
})
return data;
}
}
}
</script>
Blob.js
/*global self, unescape */
/*jslint bitwise: true, regexp: true, confusion: true, es5: true, vars: true, white: true,
plusplus: true */
(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 ： 在 Export2Excel.js 代码里面有引入 Blob，注意引入时的路径
//Export2Excel.js
require("script-loader!file-saver");
require("script-loader!./Blob"); //转二进制用 引入项目中的blob的实际路径
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"
);
}