1 /**
2 * 处理下载接口返回的文件流数据
3 * @param {*} res http请求返回数据
4 */
5 function download(res) {
6 // 错误处理
7 if (res.data.type == "application/json") {
8 let reader = new FileReader();
9 reader.readAsText(res.data, 'utf-8');
10 reader.onload = function () {
11 let json_data = JSON.parse(reader.result);
12 Message({
13 showClose: true,
14 message: json_data.Message,
15 type: "error"
16 });
17 }
18 return;
19 }
20 // 下载处理
21 let filename = "content-disposition" in res.headers ?
22 decodeURIComponent(
23 res.headers["content-disposition"]
24 .split(";")[1]
25 .split("=")[1]
26 .replace(/"/g, "")
27 ) :
28 "下载文件";
29 try {
30 if (window.navigator.msSaveOrOpenBlob) {
31 navigator.msSaveBlob(res.data, filename);
32 } else {
33 let blob = new Blob([res.data], {
34 type: "application/vnd.ms-excel"
35 });
36 let url = URL.createObjectURL(blob);
37 let link = document.createElement("a");
38 link.setAttribute("href", url);
39 link.setAttribute("download", filename);
40 link.style.display = "none";
41 document.body.appendChild(link);
42 link.click();
43 URL.revokeObjectURL(url); // 释放URL 对象
44 document.body.removeChild(link);
45 }
46 } catch (err) {
47 // console.log(err)
48 }
49 }
