第一步安装依赖包
cnpm install file-saver
cnpm install xlsx
cnpm install script-loader
第二步在项目中assets下创建一个新的文件夹js用于存放Blob和Export2Excel两个js文件
第三步在你那个组件中使用
tHeader:标题
filterVal：字段名
tableData:前端请求的数据
exportToExcel() {
//excel数据导出
require.ensure([], () => {
const {
export_json_to_excel
} = require('../../assets/js/Export2Excel');
const tHeader = ['序号','姓名','用户名','性别','邮箱'];
const filterVal = ['userId','name','username','sex','email'];
const list =this.users;
const data =this.formatJson(filterVal,list);
export_json_to_excel(tHeader,data,'用户列表');
})
},
formatJson(filterVal, jsonData) {
return jsonData.map(v => filterVal.map(j => v[j]))
},
export2Excel.js
/* eslint-disable */
require('script-loader!file-saver');
// require('script-loader!src/vendor/Blob');
require('script-loader!../../assets/js/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
var outRow = [];
var row =rows[R];
var columns =row.querySelectorAll('td');
for (var C =0;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
}
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
if (range.e.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")
}
Blob.js
/* eslint-disable */
/* Blob.js*/
/*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
,origin =/^[\w-]+:\/*\[?[\w\.:-]+\]?(?::[0-9]+)?/
;
FakeBlob.fake =FB_proto.fake =true;
while (file_ex_code--) {
FileException.prototype[file_ex_codes[file_ex_code]] =file_ex_code +1;
}
// Polyfill URL
if (!real_URL.createObjectURL) {
URL = view.URL =function (uri) {
var
uri_info =document.createElementNS("http://www.w3.org/1999/xhtml","a")
,uri_origin
;
uri_info.href = uri;
if (!("origin" in uri_info)) {
if (uri_info.protocol.toLowerCase() ==="data:") {
uri_info.origin =null;
}else {
uri_origin = uri.match(origin);
uri_info.origin =uri_origin &&uri_origin[1];
}
}
return uri_info;
};
}
URL.createObjectURL =function (blob) {
var
type = blob.type
,data_URI_header
;
if (type ===null) {
type ="application/octet-stream";
}
if (blobinstanceof 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 && (datainstanceof ArrayBuffer || datainstanceof Uint8Array)) {
var
str =""
,buf =new Uint8Array(data)
,i =0
,buf_len =buf.length
;
for (;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 (datainstanceof 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 =0;
delete this.data;
};
return FakeBlobBuilder;
}(view));
view.Blob =function (blobParts, options) {
var type = options ? (options.type ||"") :"";
var builder =new BlobBuilder();
if (blobParts) {
for (var i =0,len = blobParts.length;i
if (Uint8Array && blobParts[i]instanceof Uint8Array) {
builder.append(blobParts[i].buffer);
}
else {
builder.append(blobParts[i]);
}
}
}
var blob =builder.getBlob(type);
if (!blob.slice &&blob.webkitSlice) {
blob.slice =blob.webkitSlice;
}
return blob;
};
var getPrototypeOf =Object.getPrototypeOf ||function (object) {
return object.__proto__;
};
view.Blob.prototype =getPrototypeOf(new view.Blob());
}(
typeof self !=="undefined" &&self
||typeof window !=="undefined" &&window
||this
));
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