1 function exportExcel(method, url, data, callback) {
 2     return new Promise((resolve, reject) => {
 3         let ajaxParams = {}
 4         ajaxParams = {
 5             method: method,
 6             url: url,
 7             params: data,
 8             headers: {
 9                 'Content-type': 'application/json;application/octet-stream'
10             },
11             responseType: 'arraybuffer' // 表示服务器响应的数据类型，可以是 'arraybuffer', 'blob', 'document', 'json', 'text', 'stream'
12         }
13         instance(ajaxParams).then(res => {
14             if(res.status == 200) {
15                 const content = res.data;
16                 const blob = new Blob([content], {type: 'application/vnd.ms-excel'});
17                 const elink = document.createElement('a');
18                 elink.download = `xx信息.xls`;
19                 elink.style.display = 'none';
20                 elink.href = URL.createObjectURL(blob);
21                 document.body.appendChild(elink);
22                 elink.click();
23                 URL.revokeObjectURL(elink.href); // 释放URL 对象
24                 document.body.removeChild(elink);
25                 resolve(res)
26             } else {
27                 Message({
28                     type: 'error',
29                     message: res.data.message,
30                     duration: '1800'
31                 })
32                 reject(res.data)
33             }
34         }).catch(error => reject(error))
35     })
36 }