vue 导出execl
vue 导出execl
-
-
- 一、后端请求导出execl
- 二、前端导出 execl
-
一、后端请求导出execl
/**
*
* @param {*} name 文件名称
* @param {*} url 路径
* @param {*} path 其他参数
*/
downloadGet(name, url, params, headers = {}) {
// Message.warning("正在下载中...");
url = url + "?time=" + new Date().getTime();
axios
.get(url, {
params,
responseType: "arraybuffer",
headers,
})
.then((res) => {
const content = res.data;
if (name === "") {
let contentDisposition = res.headers["content-disposition"];
if (contentDisposition) {
name = window.decodeURI(res.headers["content-disposition"].split("=")[1], "UTF-8");
}
}
const blob = new Blob([content]); //构造一个blob对象来处理数据
const fileName = name;
//对于标签，只有 Firefox 和 Chrome（内核） 支持 download 属性
//IE10以上支持blob但是依然不支持download
if ("download" in document.createElement("a")) {
//支持a标签download的浏览器
const link = document.createElement("a"); //创建a标签
link.download = fileName; //a标签添加属性
link.style.display = "none";
link.href = URL.createObjectURL(blob);
document.body.appendChild(link);
link.click(); //执行下载
URL.revokeObjectURL(link.href); //释放url
document.body.removeChild(link); //释放标签
}
});
};
二、前端导出 execl
1、下载依赖
npm install xlsx file-saver -S
npm install script-loader -S -D
2、保存文件
import Blob from ‘@/utils/Blob’
import Export2Excel from ‘@/utils/Export2Excel.js’
Blob.js代码
/* 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 (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 = 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 < len; 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
));
Export2Excel.js 代码
/* eslint-disable */
require('script-loader!file-saver');
// require('script-loader!src/vendor/Blob');
require('./Blob');
require('script-loader!xlsx/dist/xlsx.core.min');
// import XLSX from 'xlsx'
import * as XLSX from 'xlsx'
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;
/*设置worksheet每列的最大宽度*/
const colWidth = data.map(row =>
row.map(val => {
/*先判断是否为null/undefined*/
if (val == null) {
return { wch: 10 };
} else if (val.toString().charCodeAt(0) > 255) {
/*再判断是否为中文*/
return { wch: val.toString().length*2 + 2 };
} else {
return { wch: val.toString().length };
}
})
);
/*以第一行为初始值*/ let result = colWidth[0];
for (let i = 1; i < colWidth.length; i++) {
for (let j = 0; j < colWidth[i].length; j++) {
if (result[j]["wch"] < colWidth[i][j]["wch"]) {
result[j]["wch"] = colWidth[i][j]["wch"];
}
}
}
ws["!cols"] = result;
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")
}
3、在使用vue页面使用
exportExcel() {
const { export_json_to_excel } = require('@/utils/Export2Excel');
//导出
require.ensure([], () => {
// 设置Excel表格的表头内容
const tableHeader = [
"姓名",
"金额",
"银行名称",
"卡号",
"申请时间",
"状态",
];
// 跟表格表头对应的绑定的prop 属性值
const filterVal = [
"name",
"amount",
"bankName",
"cardNo",
"applyDateStr",
"state",
];
// this.selectedRows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 list = this.filterTableData(
JSON.parse(JSON.stringify(this.selectedRows))
);
let data = this.formatJson(filterVal, list);
//最后一个是导出表格的名字
export_json_to_excel(tableHeader, data, '提现人员名单');
});
},
formatJson(filterVal, Data) {
return Data.map(v => filterVal.map(j => v[j]))
},
//导出数据前对数据处理，变为想要的格式。
filterTableData(data) {
data.forEach((item) => {
item.state = (item.state == 2 ? '等待转账' : item.state == 5 ? '等待确认'
: item.state == 6 ? '提现成功' : item.state == 7 ? '取消提现' : '')
});
return data;
},