请求后端接口
一、点击链接。
不需要token,也不需要传给后台数据时
(1)window.location.href = ‘url’
(2)<a href='url' download=''></a>
二、需要携带请求头token
这种方式就是后台将要导出的文件以文件流的方式返回给前端,前端通过blob去解析,再动态创建a标签
(1)
import axios from "axios";
export default {
data() {
return {
btnLoading: false
};
},
methods: {
// responseType 响应类型
exportFile() {
this.btnLoading = true;
axios({
method: 'get',
url: '/api',
headers: {
token: '79faf82271944fe38c4f1d99be71bc9c'
},
responseType: "blob"
})
.then(res => {
this.btnLoading = false;
if (res.data.type) {
// 文件下载
const blob = new Blob([res.data], {
type: "application/vnd.ms-excel"
});
let link = document.createElement('a');
link.href = URL.createObjectURL(blob);
link.setAttribute('download', '导出文件.xlsx');
link.click();
link = null;
this.$message.success('导出成功');
} else {
// 返回json
this.$message.warning(res.data.msg);
}
})
.catch(err => {
this.btnLoading = false;
this.$message.error("下载失败");
});
}
}
};
(3)解析后台返回的文件流(通过param传数据给后台)
这种方式就是后台将要导出的文件以文件流的方式返回给前端,前端通过blob去解析,再动态创建a标签
var param = { queryString:this.orderQuerySearch, canal:this.orderType }; var url = '/order/excel' this.$axios.post(url, param, {responseType: 'arraybuffer'}).then(res => { let content = res.data; // 文件流 let blob = new Blob([content],{type: 'application/octet-stream'}); let fileName = 'filename.xls'; // 如果后端返回文件名 // let contentDisposition = res.headers['content-disposition']; // let fileName = decodeURI(contentDisposition.split('=')[1]); if ('download' in document.createElement('a')) { // 非IE下载 let link = document.createElement('a'); link.download = fileName; link.style.display = 'none'; link.href = URL.createObjectURL(blob); document.body.appendChild(link); link.click(); URL.revokeObjectURL(link.href) ; // 释放URL 对象 document.body.removeChild(link); } else { // IE10+下载 navigator.msSaveBlob(blob,fileName); } })
接收数据前端实现
这种方式就是后台只需提供对应的数据即可,前端动态生成表格数据,再格式化。
let excel = '<table>'; // 生成表头 let row = '<tr>' + '<td>标题1</td>' + '<td>标题2</td>' + '<td>标题3</td>' + '</tr>'; excel += row + '</tr>'; // 循环生成表身 for(let i = 0 ; i < this.excelData.length ; i++ ){ excel += '<tr>'; for(let item in this.excelData[i]){ //增加 为了不让表格显示科学计数法或者其他格式 if (!this.excelData[i][item]) { this.excelData[i][item] = ''; } excel +=`<td>${ this.excelData[i][item] + ' '}</td>`; } excel +='</tr>'; } excel += '</table>'; //下载的表格模板数据 var excelFile = '<html xmlns:o="urn:schemas-microsoft-com:office:office" ' + 'xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns="http://www.w3.org/TR/REC-html40">'; excelFile += '<meta http-equiv="content-type" content="application/vnd.ms-excel; charset=UTF-8">'; excelFile += '<meta http-equiv="content-type" content="application/vnd.ms-excel"'; excelFile += ' charset="UTF-8">'; excelFile += '<head>'; excelFile += '<!--[if gte mso 9]>'; excelFile += '<xml>'; excelFile += '<x:ExcelWorkbook>'; excelFile += '<x:ExcelWorksheets>'; excelFile += '<x:ExcelWorksheet>'; excelFile += '<x:Name>'; excelFile += 'sheet'; excelFile += '</x:Name>'; excelFile += '<x:WorksheetOptions>'; excelFile += '<x:DisplayGridlines/>'; excelFile += '</x:WorksheetOptions>'; excelFile += '</x:ExcelWorksheet>'; excelFile += '</x:ExcelWorksheets>'; excelFile += '</x:ExcelWorkbook>'; excelFile += '</xml>'; excelFile += '<![endif]-->'; excelFile += '</head>'; excelFile += '<body>'; excelFile += excel; excelFile += '</body>'; excelFile += '</html>'; //下载模板 let uri = 'data:application/vnd.ms-excelcharset=utf-8,' + encodeURIComponent(excelFile); let link = document.createElement('a'); link.href = uri; link.style = 'visibility:hidden'; let myDate = new Date(); let time = myDate.toLocaleDateString().split('/').join('-'); link.download = 'fileName' + time + '.xls'; document.body.appendChild(link); link.click(); document.body.removeChild(link);