一、调后端接口做导出效果
实现效果：导出列表数据
导出的内容：
后台相对来说比较简单一点，只要后端配合写接口即可
代码：放在导出事件里进行调整即可完成导出效果
axios({
method: "get", //请求方式
url: url, //接口
params: params,
responseType: 'blob'
}).then((res) => {
if (+res.status == 200) {
var blob = res.data;
var filename = "录用统计";
saveAs(
new Blob([blob], {
type: "application/vnd.ms-excel",
}),
filename //导出文件的文件名可自定义
);
}
}).catch(err => {
console.log(err)
})
二、前端使用xlxs库进行导出操作
效果如上：个人认为调接口导出的表格更美观一点
操作如下：
首先安装我们需要的xlxs库：
npm install xlsx
接着在我们项目文件夹/src/assets/js创建一个excel-tool.js文件：
excel-tool.js文件：（不需要修改，可根据需求进行改动）
/**
* excel 工具类
*
* 基于 js-xlsx 模块对 excel 进行读写
* 官方文档可参照： https://www.npmjs.com/package/xlsx#acquiring-and-extracting-data
*/
import { utils, read, writeFile } from 'xlsx'
/**
* sheet 表头解析
* @param sheet{WorkSheet} sheet 对象
* @returns {String[]} 表头列表
*/
function readHeaders(sheet) {
const headerNames = []
// cell address format: { c: 0, r: 2 } c: column r: row
// range format: { s: { c: 0, r: 2 }, e: { c: 1, r: 6 } } s: start e: end
const range = utils.decode_range(sheet['!ref'])
const firstRowNum = range.s.r
for (let columnNum = range.s.c; columnNum <= range.e.c; columnNum++) {
const cellAddress = { c: columnNum, r: firstRowNum }
const cell = sheet[utils.encode_cell(cellAddress)]
const name = cell && cell.t ? cell.w : `UNKNOWN-${columnNum}`
headerNames.push(name)
}
return headerNames
}
/**
* 读 excel
* @param file file 对象
* @returns {Promise<{}>} 返回的对象 { sheetName: {headerNames, dataList}}
*/
export const readFile = async(file) => {
const ret = {}
const bufferData = await file.arrayBuffer()
const workBook = read(bufferData)
for (const sheetName in workBook.Sheets) {
const sheet = workBook.Sheets[sheetName]
const headerNames = readHeaders(sheet)
const dataList = utils.sheet_to_json(sheet)
ret[sheetName] = { headerNames, dataList }
}
return ret
}
/**
* 输出数据到 excel
* @param dataList {Object[]} 数据列表
* @param dataKey {String[]} 需要导出的数据对象 key
* @param firstRowNames {String[]} 表头
* @param filename {String} 文件名
*/
export const write2File = (dataList, dataKey, firstRowNames, filename) => {
const workBook = utils.book_new()
const handledDataList = dataList.map(data => dataKey.map(key => data[key]))
handledDataList.unshift(firstRowNames)
const sheet = utils.aoa_to_sheet(handledDataList)
utils.book_append_sheet(workBook, sheet, filename)
writeFile(workBook, `${filename}.xlsx`)
}
export default {
readFile,
write2File
}
页面中具体使用：
import { write2File } from "../../assets/js/excel-tool"; //引入excel-tool文件
import { GetNews } from "../../api/api"; //调接口拿数据
<script>
export default {
name: "articleList",
data() {
return {
dataKey: [
"title",
"programName",
"articelisturl",
"draftUser",
"groupName",
"state",
"draftTime"
],
firstRowNames: [
"标题",
"所属栏目",
"文章地址",
"拟稿人",
"拟稿单位",
"状态",
"拟稿日期"
],
filename: "文章列表",
};
methods: {
//导出
daochu() {
write2File(
this.tableData, //接口数据
this.dataKey, //表头对应的数据
this.firstRowNames, //表头
this.filename //导出内容命名
);
},
//接口数据
GetNews(num) {
if (num === 1) {
this.currentPage = 1;
}
let data = {
pageNum: this.currentPage,
rowLength: this.pageSize,
title: this.queryData.title || undefined,
programCode: this.queryData.programCode || undefined
};
GetNews(data).then(res => {
if (res.code === 200) {
this.tableData = res.data.dataList;
//此处为拼接的文章地址，可删除
this.tableData.forEach((item, index) => {
return (item.articelisturl =
this.url +
"newsinfo?type=" +
item.programName +
"&code=" +
item.uniqueCode);
});
this.total = Number(res.data.totalItems);
//强制刷新
this.$forceUpdate();
}
});
},
}
},
</script>
