解析blob响应是否登录失效

ruoyi-ui/src/plugins/download.js

@@ -1,6 +1,8 @@
-import { saveAs } from 'file-saver'
 import axios from 'axios'
+import { Message } from 'element-ui'
+import { saveAs } from 'file-saver'
 import { getToken } from '@/utils/auth'
+import { blobValidate } from "@/utils/ruoyi";
 
 const baseURL = process.env.VUE_APP_BASE_API
 
@@ -12,9 +14,14 @@ export default {
       url: url,
       responseType: 'blob',
       headers: { 'Authorization': 'Bearer ' + getToken() }
-    }).then(res => {
+    }).then(async (res) => {
+      const isLogin = await blobValidate(res.data);
+      if (isLogin) {
         const blob = new Blob([res.data], { type: 'application/zip' })
         this.saveAs(blob, name)
+      } else {
+        Message.error('无效的会话，或者会话已过期，请重新登录。');
+      }
     })
   },
   saveAs(text, name, opts) {

ruoyi-ui/src/utils/request.js

@@ -3,7 +3,7 @@ import { Notification, MessageBox, Message, Loading } from 'element-ui'
 import store from '@/store'
 import { getToken } from '@/utils/auth'
 import errorCode from '@/utils/errorCode'
-import { tansParams } from "@/utils/ruoyi";
+import { tansParams, blobValidate } from "@/utils/ruoyi";
 import { saveAs } from 'file-saver'
 
 let downloadLoadingInstance;
@@ -43,6 +43,10 @@ service.interceptors.response.use(res => {
     const code = res.data.code || 200;
     // 获取错误信息
     const msg = errorCode[code] || res.data.msg || errorCode['default']
+    // 二进制数据则直接返回
+    if(res.request.responseType ===  'blob' || res.request.responseType ===  'arraybuffer'){
+      return res.data
+    }
     if (code === 401) {
       MessageBox.confirm('登录状态已过期，您可以继续留在该页面，或者重新登录', '系统提示', {
           confirmButtonText: '重新登录',
@@ -98,10 +102,14 @@ export function download(url, params, filename) {
     transformRequest: [(params) => { return tansParams(params) }],
     headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
     responseType: 'blob'
-  }).then((data) => {
-    const content = data
-    const blob = new Blob([content])
+  }).then(async (data) => {
+    const isLogin = await blobValidate(data);
+    if (isLogin) {
+      const blob = new Blob([data])
       saveAs(blob, filename)
+    } else {
+      Message.error('无效的会话，或者会话已过期，请重新登录。');
+    }
     downloadLoadingInstance.close();
   }).catch((r) => {
     console.error(r)

ruoyi-ui/src/utils/ruoyi.js

@@ -214,3 +214,14 @@ export function tansParams(params) {
 	}
 	return result
 }
+
+// 验证是否为blob格式
+export async function blobValidate(data) {
+    try {
+      const text = await data.text();
+      JSON.parse(text);
+      return false;
+    } catch (error) {
+      return true;
+    }
+}