单独调整，目前没用，已调整为common/request

src/utils/request.js

@@ -46,6 +46,11 @@ service.interceptors.response.use(res => {
     // }
     // 二进制数据则直接返回
     if(res.request.responseType ===  'blob' || res.request.responseType ===  'arraybuffer'){
+      /* 保留文件名称*/
+
+      let filename = res.headers['content-disposition'].split('=')[1] // 截取字符串
+      filename = decodeURIComponent(escape(filename)); // 解码文件名
+      res.data.filename=filename||''
       return res.data
     }
     if (code === 401) {
@@ -145,7 +150,7 @@ export function download(url, params, filename) {
     const isLogin = await blobValidate(data);
     if (isLogin) {
       const blob = new Blob([data])
-      saveAs(blob, filename)
+      saveAs(blob, data.filename||filename)
     } else {
       const resText = await data.text();
       const rspObj = JSON.parse(resText);