update

WORKPAGE_OPTIMIZATION.md

@@ -0,0 +1,178 @@
+# WorkPage 性能优化方案
+
+## 问题分析
+
+### 原始问题
+workPage 只有两个页面，但打包后文件过大，导致加载缓慢：
+- `workPage-vendor.js` - 2.99 MB (第三方库)
+- `workPage.js` - 1.74 MB (应用代码)
+- `workPage.css` - 562 KB (样式)
+- **总计约 5.3 MB** ❌
+
+### 根本原因
+1. **引入了完整的 Element UI** - 约 600KB+ 未使用的组件
+2. **全局引入大型库** - echarts、video-player、viewer、vue-audio 等 workPage 不需要的库
+3. **未使用 CDN** - katex、wangeditor、aws-sdk 等大型库都打包进了 bundle
+4. **未启用代码分割** - 所有代码一次性加载，没有懒加载
+5. **未启用 gzip 压缩** - 传输体积未优化
+
+## 优化方案
+
+### ✅ 1. Element UI 按需引入
+**修改文件**: `src/router/index2.js`
+
+```javascript
+// 之前：引入完整的 Element UI
+import ElementUI from 'element-ui'
+Vue.use(ElementUI)
+
+// 优化后：按需引入
+import { Dialog } from 'element-ui'
+// 只引入 workPage 需要的组件
+```
+
+**预计优化**: 减少 ~400KB
+
+### ✅ 2. 移除不必要的全局依赖
+**修改文件**: `src/workPage/main.js`
+
+移除了以下不必要的依赖：
+- ❌ `echarts` (图表库，workPage 不需要)
+- ❌ `vue-video-player` (视频播放器)
+- ❌ `vue-audio-better` (音频播放器)
+- ❌ `v-viewer` (图片查看器)
+- ❌ `hevue-img-preview` (图片预览)
+- ❌ `clipboard` (剪贴板功能)
+
+**预计优化**: 减少 ~800KB
+
+### ✅ 3. 使用 CDN 加载大型库
+**修改文件**: `build/webpack.prod.conf.js`, `public/workPage.html`
+
+```javascript
+// webpack externals 配置
+externals: {
+  'katex': 'katex'  // 从 CDN 加载，不打包
+}
+```
+
+```html
+<!-- workPage.html 添加 CDN -->
+<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/katex.min.css">
+<script defer src="https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/katex.min.js"></script>
+```
+
+**预计优化**: 减少 ~500KB
+
+### ✅ 4. 启用路由懒加载
+**修改文件**: `src/router/index2.js`
+
+```javascript
+// 之前：同步加载
+import workPage from '@/components/pages/workPage/index'
+import workPageNew from '@/components/pages/workPage/index_new'
+
+// 优化后：懒加载
+const workPage = () => import(/* webpackChunkName: "workPage" */ '@/components/pages/workPage/index')
+const workPageNew = () => import(/* webpackChunkName: "workPageNew" */ '@/components/pages/workPage/index_new')
+```
+
+**效果**: 只加载当前访问的页面，首屏加载更快
+
+### ✅ 5. 启用 Gzip 压缩
+**修改文件**: `config/index.js`
+
+```javascript
+productionGzip: true  // 从 false 改为 true
+```
+
+**效果**: 文件传输体积减少 60-70%
+
+## 预期优化效果
+
+### 优化前
+- workPage-vendor.js: 2.99 MB
+- workPage.js: 1.74 MB
+- workPage.css: 562 KB
+- **总计**: ~5.3 MB
+
+### 优化后（预估）
+- workPage-vendor.js: ~800 KB (减少 73%)
+- workPage.js: ~600 KB (减少 66%)
+- workPage.css: ~400 KB (减少 29%)
+- **总计**: ~1.8 MB (减少 66%)
+
+### Gzip 后（预估）
+- **总计**: ~600 KB (减少 89%)
+
+## 进一步优化建议
+
+### 1. 处理 AWS SDK
+如果 workPage 使用了 aws-sdk，建议：
+- 检查是否真的需要
+- 如果需要，只引入需要的服务（如 S3）
+- 考虑使用服务端 API 代替客户端直接上传
+
+### 2. 优化 wangeditor
+富文本编辑器很大，建议：
+- 确认是否 workPage 的两个页面都需要
+- 考虑使用更轻量的替代方案
+- 或者按需异步加载
+
+### 3. 图片优化
+- 使用 WebP 格式
+- 图片懒加载
+- 压缩图片资源
+
+### 4. 代码分割
+- 将不常用的功能拆分为独立 chunk
+- 使用 webpack 的 magic comments 控制 chunk 名称
+
+## 如何验证优化效果
+
+### 1. 查看构建产物
+```bash
+npm run build
+```
+查看 `dist/static/js/` 目录下的文件大小
+
+### 2. 使用 webpack-bundle-analyzer
+```bash
+npm run build --report
+```
+会自动打开浏览器显示打包分析报告
+
+### 3. 测试加载速度
+- 使用 Chrome DevTools Network 面板
+- 启用网络限速（Fast 3G）测试
+- 查看 DOMContentLoaded 和 Load 时间
+
+## 部署说明
+
+### 服务器配置
+确保服务器启用 gzip 压缩：
+
+**Nginx 配置**:
+```nginx
+gzip on;
+gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;
+gzip_min_length 1000;
+```
+
+**Apache 配置**:
+```apache
+<IfModule mod_deflate.c>
+  AddOutputFilterByType DEFLATE text/html text/plain text/xml text/css text/javascript application/javascript application/json
+</IfModule>
+```
+
+## 注意事项
+
+1. **CDN 可用性**: 确保目标用户能访问 jsdelivr.net CDN
+2. **缓存策略**: 合理设置静态资源的缓存时间
+3. **兼容性测试**: 优化后需要测试各个功能是否正常
+
+## 总结
+
+通过以上优化，workPage 的加载速度预计可以提升 **3-5 倍**，用户体验将显著改善。
+

build/webpack.prod.conf.js

@@ -27,6 +27,12 @@ const webpackConfig = merge(baseWebpackConfig, {
     filename: utils.assetsPath('js/[name].[chunkhash].js'),
     chunkFilename: utils.assetsPath('js/[id].[chunkhash].js')
   },
+  externals: {
+    // 通过 CDN 引入大型库，减少打包体积
+    // 'vue': 'Vue',
+    // 'element-ui': 'ELEMENT',
+    'katex': 'katex'
+  },
   plugins: [
     new webpack.DefinePlugin({
       'process.env': env

dist/index.html

@@ -32,7 +32,7 @@
       width: 100%;
       background: #e6eaf0;
       font-family: '黑体';
-    }</style><link href=./static/css/app.64a96ebb99e8dc820bacf3683c4be9d5.css rel=stylesheet></head><body><div id=app></div><script type=text/javascript src=./static/js/manifest.d93528d5cf9e226d3cf7.js></script><script type=text/javascript src=./static/js/vendor.202be43a1311ad8a4edf.js></script><script type=text/javascript src=./static/js/app.e46c2b289649f11a788d.js></script></body></html><script>function stopSafari() {
+    }</style><link href=./static/css/app.64a96ebb99e8dc820bacf3683c4be9d5.css rel=stylesheet></head><body><div id=app></div><script type=text/javascript src=./static/js/manifest.89712f7b1644eb2eb982.js></script><script type=text/javascript src=./static/js/vendor.dbe53d015e99b8526cb7.js></script><script type=text/javascript src=./static/js/app.b5bcc05a7dc620f6acd2.js></script></body></html><script>function stopSafari() {
     //阻止safari浏览器双击放大功能
     let lastTouchEnd = 0  //更新手指弹起的时间
     document.documentElement.addEventListener("touchstart", function (event) {

dist/static/js/manifest.d93528d5cf9e226d3cf7.js → dist/static/js/manifest.89712f7b1644eb2eb982.js

@@ -1,2 +1,2 @@
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-//# sourceMappingURL=manifest.d93528d5cf9e226d3cf7.js.map
+!function(e){var n=window.webpackJsonp;window.webpackJsonp=function(r,a,c){for(var i,u,f,s=0,l=[];s<r.length;s++)u=r[s],t[u]&&l.push(t[u][0]),t[u]=0;for(i in a)Object.prototype.hasOwnProperty.call(a,i)&&(e[i]=a[i]);for(n&&n(r,a,c);l.length;)l.shift()();if(c)for(s=0;s<c.length;s++)f=o(o.s=c[s]);return f};var r={},t={9:0};function o(n){if(r[n])return r[n].exports;var t=r[n]={i:n,l:!1,exports:{}};return e[n].call(t.exports,t,t.exports,o),t.l=!0,t.exports}o.e=function(e){var n=t[e];if(0===n)return new Promise(function(e){e()});if(n)return n[2];var r=new Promise(function(r,o){n=t[e]=[r,o]});n[2]=r;var a=document.getElementsByTagName("head")[0],c=document.createElement("script");c.type="text/javascript",c.charset="utf-8",c.async=!0,c.timeout=12e4,o.nc&&c.setAttribute("nonce",o.nc),c.src=o.p+"static/js/"+e+"."+{0:"7da288988865a9378b49",1:"14e8e8c7e44fc858e4a6",3:"f000be789f83ba95d90f",4:"4a752238c3b1f0dbdded"}[e]+".js";var i=setTimeout(u,12e4);function u(){c.onerror=c.onload=null,clearTimeout(i);var n=t[e];0!==n&&(n&&n[1](new Error("Loading chunk "+e+" failed.")),t[e]=void 0)}return c.onerror=c.onload=u,a.appendChild(c),r},o.m=e,o.c=r,o.d=function(e,n,r){o.o(e,n)||Object.defineProperty(e,n,{configurable:!1,enumerable:!0,get:r})},o.n=function(e){var n=e&&e.__esModule?function(){return e.default}:function(){return e};return o.d(n,"a",n),n},o.o=function(e,n){return Object.prototype.hasOwnProperty.call(e,n)},o.p="./",o.oe=function(e){throw console.error(e),e}}([]);
+//# sourceMappingURL=manifest.89712f7b1644eb2eb982.js.map

dist/static/js/workPage-manifest.26090aeb186e6f519707.js

@@ -0,0 +1,2 @@
+!function(e){var n=window.webpackJsonp;window.webpackJsonp=function(r,c,i){for(var u,a,f,s=0,l=[];s<r.length;s++)a=r[s],t[a]&&l.push(t[a][0]),t[a]=0;for(u in c)Object.prototype.hasOwnProperty.call(c,u)&&(e[u]=c[u]);for(n&&n(r,c,i);l.length;)l.shift()();if(i)for(s=0;s<i.length;s++)f=o(o.s=i[s]);return f};var r={},t={10:0};function o(n){if(r[n])return r[n].exports;var t=r[n]={i:n,l:!1,exports:{}};return e[n].call(t.exports,t,t.exports,o),t.l=!0,t.exports}o.e=function(e){var n=t[e];if(0===n)return new Promise(function(e){e()});if(n)return n[2];var r=new Promise(function(r,o){n=t[e]=[r,o]});n[2]=r;var c=document.getElementsByTagName("head")[0],i=document.createElement("script");i.type="text/javascript",i.charset="utf-8",i.async=!0,i.timeout=12e4,o.nc&&i.setAttribute("nonce",o.nc),i.src=o.p+"static/js/"+e+"."+{2:"ce976d8fc1f83182ce49"}[e]+".js";var u=setTimeout(a,12e4);function a(){i.onerror=i.onload=null,clearTimeout(u);var n=t[e];0!==n&&(n&&n[1](new Error("Loading chunk "+e+" failed.")),t[e]=void 0)}return i.onerror=i.onload=a,c.appendChild(i),r},o.m=e,o.c=r,o.d=function(e,n,r){o.o(e,n)||Object.defineProperty(e,n,{configurable:!1,enumerable:!0,get:r})},o.n=function(e){var n=e&&e.__esModule?function(){return e.default}:function(){return e};return o.d(n,"a",n),n},o.o=function(e,n){return Object.prototype.hasOwnProperty.call(e,n)},o.p="./",o.oe=function(e){throw console.error(e),e}}([]);
+//# sourceMappingURL=workPage-manifest.26090aeb186e6f519707.js.map

dist/static/js/workPage-manifest.2ece51fa34be51c8610a.js

@@ -1,2 +0,0 @@
-!function(r){var n=window.webpackJsonp;window.webpackJsonp=function(e,u,c){for(var f,i,p,a=0,l=[];a<e.length;a++)i=e[a],o[i]&&l.push(o[i][0]),o[i]=0;for(f in u)Object.prototype.hasOwnProperty.call(u,f)&&(r[f]=u[f]);for(n&&n(e,u,c);l.length;)l.shift()();if(c)for(a=0;a<c.length;a++)p=t(t.s=c[a]);return p};var e={},o={9:0};function t(n){if(e[n])return e[n].exports;var o=e[n]={i:n,l:!1,exports:{}};return r[n].call(o.exports,o,o.exports,t),o.l=!0,o.exports}t.m=r,t.c=e,t.d=function(r,n,e){t.o(r,n)||Object.defineProperty(r,n,{configurable:!1,enumerable:!0,get:e})},t.n=function(r){var n=r&&r.__esModule?function(){return r.default}:function(){return r};return t.d(n,"a",n),n},t.o=function(r,n){return Object.prototype.hasOwnProperty.call(r,n)},t.p="./",t.oe=function(r){throw console.error(r),r}}([]);
-//# sourceMappingURL=workPage-manifest.2ece51fa34be51c8610a.js.map

dist/workPage.html

@@ -1 +1 @@
-<!DOCTYPE html><html><head><meta charset=utf-8><meta name=viewport content="width=device-width,initial-scale=1"><title>工作页面 - CocoFlow</title><link rel=icon href=../static/logo.ico><link href=./static/css/workPage.af186edca42b88902c92f25d936aa8cc.css rel=stylesheet></head><body><noscript><strong>We're sorry but this app doesn't work properly without JavaScript enabled. Please enable it to continue.</strong></noscript><div id=app></div><script type=text/javascript src=./static/js/workPage-manifest.2ece51fa34be51c8610a.js></script><script type=text/javascript src=./static/js/workPage-vendor.12e6e6abfb5b1b61c5e9.js></script><script type=text/javascript src=./static/js/workPage.09a18290c46a69d24515.js></script></body></html>
+<!DOCTYPE html><html><head><meta charset=utf-8><meta name=viewport content="width=device-width,initial-scale=1"><title>工作页面 - CocoFlow</title><link rel=icon href=../static/logo.ico><link rel=stylesheet href=https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/katex.min.css crossorigin=anonymous><script defer=defer src=https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/katex.min.js crossorigin=anonymous></script><link href=./static/css/workPage.287aa55fa9d662568cd61a26886be6f2.css rel=stylesheet></head><body><noscript><strong>We're sorry but this app doesn't work properly without JavaScript enabled. Please enable it to continue.</strong></noscript><div id=app></div><script type=text/javascript src=./static/js/workPage-manifest.26090aeb186e6f519707.js></script><script type=text/javascript src=./static/js/workPage-vendor.276c17b081ddfd72ebda.js></script><script type=text/javascript src=./static/js/workPage.65cf2b072eb203c9f196.js></script></body></html>

public/workPage.html

@@ -5,6 +5,9 @@
     <meta name="viewport" content="width=device-width,initial-scale=1.0">
     <title>工作页面 - CocoFlow</title>
     <link rel="icon" href="../static/logo.ico">
+    <!-- KaTeX CDN - 数学公式渲染库 -->
+    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/katex.min.css" crossorigin="anonymous">
+    <script defer src="https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/katex.min.js" crossorigin="anonymous"></script>
   </head>
   <body>
     <noscript>

src/router/index2.js

@@ -1,14 +1,16 @@
 import Vue from 'vue'
 import Router from 'vue-router'
-import ElementUI from 'element-ui'
+import { Dialog } from 'element-ui'
 import 'element-ui/lib/theme-chalk/index.css'
-import workPage from '@/components/pages/workPage/index'
-import workPageNew from '@/components/pages/workPage/index_new'
+
+// 使用路由懒加载，按需加载组件
+const workPage = () => import(/* webpackChunkName: "workPage" */ '@/components/pages/workPage/index')
+const workPageNew = () => import(/* webpackChunkName: "workPageNew" */ '@/components/pages/workPage/index_new')
 
 
 // 全局修改默认配置，点击空白处不能关闭弹窗
-ElementUI.Dialog.props.closeOnClickModal.default = false
-Vue.use(Router).use(ElementUI)
+Dialog.props.closeOnClickModal.default = false
+Vue.use(Router)
 
 export default new Router({
   routes: [

src/workPage/main.js

@@ -1,69 +1,42 @@
-// The Vue build version to load with the `import` command
-// (runtime-only or standalone) has been set in webpack.base.conf with an alias.
+// workPage 优化版入口 - 只引入必需的依赖
 import Vue from 'vue'
 import App from '../App'
 import router from '../router/index2'
 import store from '../config/config'
-import {  Loading } from 'element-ui';
-// Message,
-import { myMessage } from '../components/tools/message';
+
+// 只引入 workPage 需要的 Element UI 组件
+import { Loading, Input, Button, Dialog } from 'element-ui'
+import 'element-ui/lib/theme-chalk/index.css'
+
+import { myMessage } from '../components/tools/message'
 import ajax from '../common/axios.config'
-import qs from 'qs'
-import '../common/player.css'
-import VideoPlayer from 'vue-video-player'
-import 'video.js/dist/video-js.css' //videoJs的样式
-import 'vue-video-player/src/custom-theme.css' //vue-video-player的样式
 import VueCookies from 'vue-cookies'
-import Viewer from 'v-viewer'
-import 'viewerjs/dist/viewer.css'
-import Clipboard from "clipboard";
-import hevueImgPreview from '../components/tools/hevue-img-preview'
+
+// workPage 需要的基础样式
 import '../assets/css/button.css'
 import '../assets/css/dialog.css'
-import '../assets/css/markdownCss.css'
-import '../assets/css/markdownCssCopy.css'
-
-import VueAudio from 'vue-audio-better'
 
-const echarts = require('echarts');
+// 按需注册 Element UI 组件
+Vue.use(Loading)
+Vue.use(Input)
+Vue.use(Button)
+Vue.use(Dialog)
+Vue.use(VueCookies)
 
-//
-Vue.use(VideoPlayer).use(VueAudio).use(VueCookies).use(Viewer).use(hevueImgPreview, {
-    clickMaskCLose: true
-})
 Vue.config.productionTip = false
-Vue.prototype.$store = store; // 将store实例挂在vue原型上
+Vue.prototype.$store = store
 Vue.prototype.ajax = ajax
-Vue.prototype.Clipboard = Clipboard
-// Vue.prototype.$message = Message
 Vue.prototype.$message = myMessage
 Vue.prototype.$loading = Loading
-Vue.prototype.$echarts = echarts
 Vue.prototype.openLoading = function(target) {
-    const loading = this.$loading.service({ // 声明一个loading对象
-        lock: true, // 是否锁屏
-        background: 'rgba(255, 255, 255, 0.7)', // 背景颜色
-        target: target ? target : document.body, // 需要遮罩的区域
+    const loading = this.$loading.service({
+        lock: true,
+        background: 'rgba(255, 255, 255, 0.7)',
+        target: target ? target : document.body,
         body: true,
     })
-    return loading;
+    return loading
 }
-Vue.prototype.$qs = qs
-Viewer.setDefaults({
-    'inline': false, //启用inline模式
-    'button': false, //显示右上角关闭按钮
-    'navbar': false, //显示缩略图导航
-    'title': false, //显示当前图片的标题
-    'toolbar': true, //显示工具栏
-    'tooltip': true, //显示缩略百分比
-    'movable': true, //图片是否可移动
-    'zoomable': true, //图片是否可缩放
-    'rotatable': true, //图片是否可旋转
-    'scalable': true, //图片是否可反转
-    'transition': true, //使用css3过度
-    'fullscreen': false, //播放时是否全屏
-    'keyboard': true, //
-})
 
 /* eslint-disable no-new */
 new Vue({
@@ -80,34 +53,31 @@ router.beforeEach((to, from, next) => {
         document.title = to.meta.title
     }
     const requireAuth = to.meta.requireAuth
-        // 判断该路由是否需要登录权限
     if (requireAuth) {
         var isLogin = VueCookies.get('tlogin')
         if (isLogin == "1") {
             var userinfo = VueCookies.get('teacherInfo')
-            store.commit("update", ["isLogin", true]);
-
-            // var info = JSON.parse(window.sessionStorage.getItem("userInfo"))
-            store.commit("update", ["userInfo", userinfo]);
+            store.commit("update", ["isLogin", true])
+            store.commit("update", ["userInfo", userinfo])
             store.state.luyou = store.state.luyou + 1
-            store.commit("update", ["luyou", store.state.luyou]);
+            store.commit("update", ["luyou", store.state.luyou])
             next()
         } else {
             const loading = Loading.service({
                 background: "rgba(255, 255, 255)",
                 target: document.querySelector("body"),
-            });
-            store.commit("update", ["isLogin", false]);
-            Message({
+            })
+            store.commit("update", ["isLogin", false])
+            myMessage({
                 message: '未登录，请登录',
                 type: 'warning'
-            });
+            })
             setTimeout(() => {
-                loading.close();
+                loading.close()
                 next('/login')
-            }, 2000);
+            }, 2000)
         }
     } else {
-        next() // 确保一定要有next()被调用
+        next()
     }
-})
+})