From d734bfc34f65b6cd036b5f21b718294152fecacf Mon Sep 17 00:00:00 2001
From: RuoYi <yzz_ivy@163.com>
Date: 星期四, 17 二月 2022 11:56:11 +0800
Subject: [PATCH] 修复分页组件请求两次问题(I4SQOR)

---
 ruoyi-ui/src/utils/request.js |  101 +++++++++++++++++++++++++++++++++++++++-----------
 1 files changed, 78 insertions(+), 23 deletions(-)

diff --git a/ruoyi-ui/src/utils/request.js b/ruoyi-ui/src/utils/request.js
index e95d01d..107a28d 100644
--- a/ruoyi-ui/src/utils/request.js
+++ b/ruoyi-ui/src/utils/request.js
@@ -1,8 +1,15 @@
 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, blobValidate } from "@/utils/ruoyi";
+import cache from '@/plugins/cache'
+import { saveAs } from 'file-saver'
+
+let downloadLoadingInstance;
+// 是否显示重新登录
+let isReloginShow;
 
 axios.defaults.headers['Content-Type'] = 'application/json;charset=utf-8'
 // 创建axios实例
@@ -12,36 +19,45 @@
   // 超时
   timeout: 10000
 })
+
 // request拦截器
 service.interceptors.request.use(config => {
   // 是否需要设置 token
   const isToken = (config.headers || {}).isToken === false
+  // 是否需要防止数据重复提交
+  const isRepeatSubmit = (config.headers || {}).repeatSubmit === false
   if (getToken() && !isToken) {
     config.headers['Authorization'] = 'Bearer ' + getToken() // 让每个请求携带自定义token 请根据实际情况自行修改
   }
   // 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)) {
-            if (value[key] !== null && typeof (value[key]) !== 'undefined') {
-              let params = propName + '[' + key + ']'
-              let 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;
+  }
+  if (!isRepeatSubmit && (config.method === 'post' || config.method === 'put')) {
+    const requestObj = {
+      url: config.url,
+      data: typeof config.data === 'object' ? JSON.stringify(config.data) : config.data,
+      time: new Date().getTime()
+    }
+    const sessionObj = cache.session.getJSON('sessionObj')
+    if (sessionObj === undefined || sessionObj === null || sessionObj === '') {
+      cache.session.setJSON('sessionObj', requestObj)
+    } else {
+      const s_url = sessionObj.url;                  // 请求地址
+      const s_data = sessionObj.data;                // 请求数据
+      const s_time = sessionObj.time;                // 请求时间
+      const interval = 1000;                         // 间隔时间(ms),小于此时间视为重复提交
+      if (s_data === requestObj.data && requestObj.time - s_time < interval && s_url === requestObj.url) {
+        const message = '数据正在处理,请勿重复提交';
+        console.warn(`[${s_url}]: ` + message)
+        return Promise.reject(new Error(message))
+      } else {
+        cache.session.setJSON('sessionObj', requestObj)
+      }
+    }
   }
   return config
 }, error => {
@@ -55,18 +71,31 @@
     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', {
+      if (!isReloginShow) {
+        isReloginShow = true;
+        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',
           cancelButtonText: '取消',
           type: 'warning'
         }
       ).then(() => {
+        isReloginShow = false;
         store.dispatch('LogOut').then(() => {
-          location.href = '/index';
+          // 如果是登录页面不需要重新加载
+          if (window.location.hash.indexOf("#/login") != 0) {
+            location.href = '/index';
+          }
         })
-      }).catch(() => {});
-      return Promise.reject('令牌验证失败')
+      }).catch(() => {
+        isReloginShow = false;
+      });
+    }
+      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,
@@ -103,4 +132,30 @@
   }
 )
 
+// 通用下载方法
+export function download(url, params, filename) {
+  downloadLoadingInstance = Loading.service({ text: "正在下载数据,请稍候", 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' },
+    responseType: 'blob'
+  }).then(async (data) => {
+    const isLogin = await blobValidate(data);
+    if (isLogin) {
+      const blob = new Blob([data])
+      saveAs(blob, filename)
+    } else {
+      const resText = await data.text();
+      const rspObj = JSON.parse(resText);
+      const errMsg = errorCode[rspObj.code] || rspObj.msg || errorCode['default']
+      Message.error(errMsg);
+    }
+    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();
+  })
+}
+
 export default service

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