From 3901695a6f81e51b155a7b27209e915f2a0e478d Mon Sep 17 00:00:00 2001
From: RuoYi <yzz_ivy@163.com>
Date: Mon, 25 Oct 2021 09:49:13 +0800
Subject: [PATCH] 解析blob响应是否登录失效

---
 ruoyi-ui/src/utils/request.js |   62 ++++++++++++-------------------
 1 files changed, 24 insertions(+), 38 deletions(-)

diff --git a/ruoyi-ui/src/utils/request.js b/ruoyi-ui/src/utils/request.js
index 14879eb..3a4c07b 100644
--- a/ruoyi-ui/src/utils/request.js
+++ b/ruoyi-ui/src/utils/request.js
@@ -1,11 +1,14 @@
 import axios from 'axios'
-import { Notification, MessageBox, Message } from 'element-ui'
+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'
 
-axios.defaults.headers['Content-Type'] = 'application/json;charset=utf-8'
+let downloadLoadingInstance;
+
+axios.defaults.headers['Conntent-Type'] = 'application/json;charset=utf-8'
 // 创建axios实例
 const service = axios.create({
   // axios中请求配置有baseURL选项,表示请求URL公共部分
@@ -23,22 +26,7 @@
   }
   // get请求映射params参数
   if (config.method === 'get' && config.params) {
-    let url = config.url + '?';
-    for (const propName of Object.keys(config.params)) {
-      const value = config.params[propName];
-      var part = encodeURIComponent(propName) + "=";
-      if (value !== null && typeof(value) !== "undefined") {
-        if (typeof value === 'object') {
-          for (const key of Object.keys(value)) {
-            let params = propName + '[' + key + ']';
-            var subPart = encodeURIComponent(params) + "=";
-            url += subPart + encodeURIComponent(value[key]) + "&";
-          }
-        } else {
-          url += part + encodeURIComponent(value) + "&";
-        }
-      }
-    }
+    let url = config.url + '?' + tansParams(config.params);
     url = url.slice(0, -1);
     config.params = {};
     config.url = url;
@@ -55,6 +43,10 @@
     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',
@@ -66,6 +58,7 @@
           location.href = '/index';
         })
       }).catch(() => {});
+      return Promise.reject('无效的会话,或者会话已过期,请重新登录。')
     } else if (code === 500) {
       Message({
         message: msg,
@@ -104,31 +97,24 @@
 
 // 通用下载方法
 export function download(url, params, filename) {
+  downloadLoadingInstance = Loading.service({ text: "正在下载数据,请稍后", spinner: "el-icon-loading", background: "rgba(0, 0, 0, 0.7)", })
   return service.post(url, params, {
-    transformRequest: [(params) => {
-      return tansParams(params)
-    }],
-    headers: {
-        'Content-Type': 'application/x-www-form-urlencoded'
-    },
+    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])
-    if ('download' in document.createElement('a')) {
-      const elink = document.createElement('a')
-      elink.download = filename
-      elink.style.display = 'none'
-      elink.href = URL.createObjectURL(blob)
-      document.body.appendChild(elink)
-      elink.click()
-      URL.revokeObjectURL(elink.href)
-      document.body.removeChild(elink)
+  }).then(async (data) => {
+    const isLogin = await blobValidate(data);
+    if (isLogin) {
+      const blob = new Blob([data])
+      saveAs(blob, filename)
     } else {
-      navigator.msSaveBlob(blob, filename)
+      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)
+    Message.error('下载文件出现错误,请联系管理员!')
+    downloadLoadingInstance.close();
   })
 }
 

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