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  Element表单校验补充
</a></li></ul></div></div><div class="nav-item"><div class="dropdown-wrapper"><button type="button" aria-label="核心生态" class="dropdown-title"><span class="title">核心生态</span> <span class="arrow down"></span></button> <button type="button" aria-label="核心生态" class="mobile-dropdown-title"><span class="title">核心生态</span> <span class="arrow right"></span></button> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="https://cn.vuejs.org/" target="_blank" rel="noopener noreferrer" class="nav-link external">
  Vue
  <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></li><li class="dropdown-item"><!----> <a href="https://router.vuejs.org/zh/" target="_blank" rel="noopener noreferrer" class="nav-link external">
  VueRouter
  <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></li><li class="dropdown-item"><!----> <a href="https://vuex.vuejs.org/zh/" target="_blank" rel="noopener noreferrer" class="nav-link external">
  Vuex
  <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></li><li class="dropdown-item"><!----> <a href="https://www.axios-http.cn/" target="_blank" rel="noopener noreferrer" class="nav-link external">
  Axios
  <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></li><li class="dropdown-item"><!----> <a href="https://element.eleme.cn/#/zh-CN" target="_blank" rel="noopener noreferrer" class="nav-link external">
  ElementUI
  <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></li></ul></div></div><div class="nav-item"><div class="dropdown-wrapper"><button type="button" aria-label="相关插件" class="dropdown-title"><span class="title">相关插件</span> <span class="arrow down"></span></button> <button type="button" aria-label="相关插件" class="mobile-dropdown-title"><span class="title">相关插件</span> <span class="arrow right"></span></button> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="https://kazupon.github.io/vue-i18n/" target="_blank" rel="noopener noreferrer" class="nav-link external">
  vue-i18n
  <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></li><li class="dropdown-item"><!----> <a href="https://www.npmjs.com/package/vue-print-nb" target="_blank" rel="noopener noreferrer" class="nav-link external">
  vue-print-nb
  <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></li><li class="dropdown-item"><!----> <a href="https://www.npmjs.com/package/screenfull" target="_blank" rel="noopener noreferrer" class="nav-link external">
  screenfull
  <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></li><li class="dropdown-item"><!----> <a href="https://www.npmjs.com/package/nprogress" target="_blank" rel="noopener noreferrer" class="nav-link external">
  nprogress
  <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></li><li class="dropdown-item"><!----> <a href="https://www.npmjs.com/package/echarts" target="_blank" rel="noopener noreferrer" class="nav-link external">
  echarts
  <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></li><li class="dropdown-item"><!----> <a href="https://www.npmjs.com/package/xlsx" target="_blank" rel="noopener noreferrer" class="nav-link external">
  xlsx
  <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></li><li class="dropdown-item"><!----> <a href="https://www.npmjs.com/package/cos-js-sdk-v5" target="_blank" rel="noopener noreferrer" class="nav-link external">
  cos-js-sdk-v5
  <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></li></ul></div></div> <!----></nav>  <ul class="sidebar-links"><li><section class="sidebar-group depth-0"><p class="sidebar-heading open"><span>打包之前的路由模式</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/hrsass-notes/13-%E6%89%93%E5%8C%85%E4%B8%8A%E7%BA%BF.html#打包之前的路由模式" class="sidebar-link">打包之前的路由模式</a><ul class="sidebar-sub-headers"></ul></li><li><a href="/hrsass-notes/13-%E6%89%93%E5%8C%85%E4%B8%8A%E7%BA%BF.html#性能分析和cdn的应用" class="sidebar-link">性能分析和CDN的应用</a><ul class="sidebar-sub-headers"><li class="sidebar-sub-header"><a href="/hrsass-notes/13-%E6%89%93%E5%8C%85%E4%B8%8A%E7%BA%BF.html#性能分析" class="sidebar-link">性能分析</a></li><li class="sidebar-sub-header"><a href="/hrsass-notes/13-%E6%89%93%E5%8C%85%E4%B8%8A%E7%BA%BF.html#webpack排除打包" class="sidebar-link">webpack排除打包</a></li><li class="sidebar-sub-header"><a href="/hrsass-notes/13-%E6%89%93%E5%8C%85%E4%B8%8A%E7%BA%BF.html#cdn文件配置" class="sidebar-link">CDN文件配置</a></li><li class="sidebar-sub-header"><a href="/hrsass-notes/13-%E6%89%93%E5%8C%85%E4%B8%8A%E7%BA%BF.html#注入cdn文件到模板" class="sidebar-link">注入CDN文件到模板</a></li></ul></li><li><a href="/hrsass-notes/13-%E6%89%93%E5%8C%85%E4%B8%8A%E7%BA%BF.html#在nodejs环境中应用并代理跨域" class="sidebar-link">在nodejs环境中应用并代理跨域</a><ul class="sidebar-sub-headers"><li class="sidebar-sub-header"><a href="/hrsass-notes/13-%E6%89%93%E5%8C%85%E4%B8%8A%E7%BA%BF.html#使用koa框架部署项目" class="sidebar-link">使用koa框架部署项目</a></li><li class="sidebar-sub-header"><a href="/hrsass-notes/13-%E6%89%93%E5%8C%85%E4%B8%8A%E7%BA%BF.html#解决history页面访问问题" class="sidebar-link">解决history页面访问问题</a></li><li class="sidebar-sub-header"><a href="/hrsass-notes/13-%E6%89%93%E5%8C%85%E4%B8%8A%E7%BA%BF.html#解决生产环境跨域问题" class="sidebar-link">解决生产环境跨域问题</a></li></ul></li></ul></section></li></ul> </aside> <main class="page"> <div class="theme-default-content content__default"><h2 id="打包之前的路由模式"><a href="#打包之前的路由模式" class="header-anchor">#</a> <strong>打包之前的路由模式</strong></h2> <p>**<code>目标</code>**配置打包之前的路由模式</p> <blockquote><p>在SPA单页应用中，有两种路由模式</p></blockquote> <p><strong>hash模式</strong> ： #后面是路由路径，特点是前端访问，#后面的变化不会经过服务器</p> <p><strong>history模式</strong>：正常的/访问模式，特点是后端访问，任意地址的变化都会访问服务器</p> <blockquote><p>开发到现在，我们一直都在用hash模式，打包我们尝试用history模式</p></blockquote> <p>改成history模式非常简单，只需要将路由的mode类型改成history即可</p> <div class="language-js line-numbers-mode"><pre class="language-js"><code><span class="token keyword">const</span> <span class="token function-variable function">createRouter</span> <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token keyword">new</span> <span class="token class-name">Router</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
  mode<span class="token operator">:</span> <span class="token string">'history'</span><span class="token punctuation">,</span> <span class="token comment">// require service support</span>
  <span class="token function-variable function">scrollBehavior</span><span class="token operator">:</span> <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">(</span><span class="token punctuation">{</span> y<span class="token operator">:</span> <span class="token number">0</span> <span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token comment">// 管理滚动行为 如果出现滚动 切换就让 让页面回到顶部</span>
  routes<span class="token operator">:</span> <span class="token punctuation">[</span><span class="token operator">...</span>constantRoutes<span class="token punctuation">]</span> <span class="token comment">// 改成只有静态路由</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span>
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br></div></div><blockquote><p>假设我们的地址是这样的  <strong><code>www.xxxx/com/hr</code></strong>/a <strong><code>www.xxxx/com/hr</code></strong>/b</p></blockquote> <p>我们会发现，其实域名是**<code>www.xxxx/com</code>**，hr是特定的前缀地址，此时我们可以配置一个base属性，配置为hr</p> <div class="language-js line-numbers-mode"><pre class="language-js"><code><span class="token keyword">const</span> <span class="token function-variable function">createRouter</span> <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token keyword">new</span> <span class="token class-name">Router</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
  mode<span class="token operator">:</span> <span class="token string">'history'</span><span class="token punctuation">,</span> <span class="token comment">// require service support</span>
  base<span class="token operator">:</span> <span class="token string">'/hr/'</span><span class="token punctuation">,</span> <span class="token comment">// 配置项目的基础地址</span>
  <span class="token function-variable function">scrollBehavior</span><span class="token operator">:</span> <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">(</span><span class="token punctuation">{</span> y<span class="token operator">:</span> <span class="token number">0</span> <span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token comment">// 管理滚动行为 如果出现滚动 切换就让 让页面回到顶部</span>
  routes<span class="token operator">:</span> <span class="token punctuation">[</span><span class="token operator">...</span>constantRoutes<span class="token punctuation">]</span> <span class="token comment">// 改成只有静态路由</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span>
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br></div></div><p>此时，我们会发现地址已经变成我们想要的样子了</p> <p><img src="data:image/png;base64,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" alt="image-20200804014626686"></p> <p><strong>提交代码</strong></p> <h2 id="性能分析和cdn的应用"><a href="#性能分析和cdn的应用" class="header-anchor">#</a> 性能分析和CDN的应用</h2> <p><strong><code>目标</code></strong>： 对开发的应用进行性能分析和CDN的应用</p> <h3 id="性能分析"><a href="#性能分析" class="header-anchor">#</a> 性能分析</h3> <blockquote><p>我们集成了 功能，写了很多组件，最终都会打包成一堆文件，那么真实运行的性能如何呢？</p></blockquote> <p>我们可以使用vue-cli本身提供的性能分析工具，对我们开发的所有功能进行打包分析</p> <p>它的应用非常简单</p> <div class="language-bash line-numbers-mode"><pre class="language-bash"><code>$ <span class="token function">npm</span> run preview -- --report
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><p>这个命令会从我们的**<code>入口main.js</code>**进行依赖分析，分析出最大的包，方便我们进行观察和优化</p> <p>执行完这个命令，我们会看到如下的页面</p> <p><img src="/hrsass-notes/assets/img/image-20200804015849396.1bf48eff.png" alt="image-20200804015849396"></p> <p>如图所以，方块越大，说明该文件占用的文件越大，文件越大，对于网络带宽和访问速度的要求就越高，这也就是我们优化的方向</p> <blockquote><p>像这种情况，我们怎么优化一下呢</p></blockquote> <h3 id="webpack排除打包"><a href="#webpack排除打包" class="header-anchor">#</a> webpack排除打包</h3> <p>CDN是一个比较好的方式</p> <blockquote><p>文件不是大吗？我们就不要把这些大的文件和那些小的文件打包到一起了，像这种xlsx,element这种功能性很全的插件，我们可以放到CDN服务器上，一来，减轻整体包的大小，二来CDN的加速服务可以加快我们对于插件的访问速度</p></blockquote> <p><strong>使用方式</strong></p> <p>先找到 <code>vue.config.js</code>， 添加 <code>externals</code> 让 <code>webpack</code> 不打包 <code>xlsx</code> 和 <code>element</code></p> <p><strong><code>vue.config.js</code></strong></p> <div class="language-js line-numbers-mode"><pre class="language-js"><code> <span class="token comment">// 排除 elementUI xlsx  和 vue </span>
  externals<span class="token operator">:</span>
      <span class="token punctuation">{</span>
        <span class="token string">'vue'</span><span class="token operator">:</span> <span class="token string">'Vue'</span><span class="token punctuation">,</span>
        <span class="token string">'element-ui'</span><span class="token operator">:</span> <span class="token string">'ELEMENT'</span><span class="token punctuation">,</span>
        <span class="token string">'xlsx'</span><span class="token operator">:</span> <span class="token string">'XLSX'</span>
     <span class="token punctuation">}</span>
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br></div></div><p>再次运行，我们会发现包的大小已经大幅减小</p> <h3 id="cdn文件配置"><a href="#cdn文件配置" class="header-anchor">#</a> CDN文件配置</h3> <blockquote><p>但是，没有被打包的几个模块怎么处理？</p></blockquote> <p>可以采用CDN的方式，在页面模板中预先引入</p> <p><strong><code>vue.config.js</code></strong></p> <div class="language-js line-numbers-mode"><pre class="language-js"><code><span class="token keyword">const</span> cdn <span class="token operator">=</span> <span class="token punctuation">{</span>
  css<span class="token operator">:</span> <span class="token punctuation">[</span>
    <span class="token comment">// element-ui css</span>
    <span class="token string">'https://unpkg.com/element-ui/lib/theme-chalk/index.css'</span> <span class="token comment">// 样式表</span>
  <span class="token punctuation">]</span><span class="token punctuation">,</span>
  js<span class="token operator">:</span> <span class="token punctuation">[</span>
    <span class="token comment">// vue must at first!</span>
    <span class="token string">'https://unpkg.com/vue/dist/vue.js'</span><span class="token punctuation">,</span> <span class="token comment">// vuejs</span>
    <span class="token comment">// element-ui js</span>
    <span class="token string">'https://unpkg.com/element-ui/lib/index.js'</span><span class="token punctuation">,</span> <span class="token comment">// elementUI</span>
      <span class="token string">'https://cdn.jsdelivr.net/npm/xlsx@0.16.6/dist/jszip.min.js'</span><span class="token punctuation">,</span>
    <span class="token string">'https://cdn.jsdelivr.net/npm/xlsx@0.16.6/dist/xlsx.full.min.js'</span>
  <span class="token punctuation">]</span>
<span class="token punctuation">}</span>
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br><span class="line-number">10</span><br><span class="line-number">11</span><br><span class="line-number">12</span><br><span class="line-number">13</span><br><span class="line-number">14</span><br></div></div><blockquote><p>但是请注意，这时的配置实际上是对开发环境和生产环境都生效的，在开发环境时，没有必要使用CDN，此时我们可以使用环境变量来进行区分</p></blockquote> <div class="language-js line-numbers-mode"><pre class="language-js"><code><span class="token keyword">let</span> cdn <span class="token operator">=</span> <span class="token punctuation">{</span> css<span class="token operator">:</span> <span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token punctuation">,</span> js<span class="token operator">:</span> <span class="token punctuation">[</span><span class="token punctuation">]</span> <span class="token punctuation">}</span>
<span class="token comment">// 通过环境变量 来区分是否使用cdn</span>
<span class="token keyword">const</span> isProd <span class="token operator">=</span> process<span class="token punctuation">.</span>env<span class="token punctuation">.</span><span class="token constant">NODE_ENV</span> <span class="token operator">===</span> <span class="token string">'production'</span> <span class="token comment">// 判断是否是生产环境</span>
<span class="token keyword">let</span> externals <span class="token operator">=</span> <span class="token punctuation">{</span><span class="token punctuation">}</span>
<span class="token keyword">if</span> <span class="token punctuation">(</span>isProd<span class="token punctuation">)</span> <span class="token punctuation">{</span>
  <span class="token comment">// 如果是生产环境 就排除打包 否则不排除</span>
  externals <span class="token operator">=</span> <span class="token punctuation">{</span>
    vue<span class="token operator">:</span> <span class="token string">'Vue'</span><span class="token punctuation">,</span>
    <span class="token string">'vue-router'</span><span class="token operator">:</span> <span class="token string">'VueRouter'</span><span class="token punctuation">,</span>
    vuex<span class="token operator">:</span> <span class="token string">'Vuex'</span><span class="token punctuation">,</span>
    <span class="token string">'xlsx'</span><span class="token operator">:</span> <span class="token string">'XLSX'</span><span class="token punctuation">,</span>
    <span class="token string">'echarts'</span><span class="token operator">:</span> <span class="token string">'echarts'</span><span class="token punctuation">,</span>
    <span class="token string">'element-ui'</span><span class="token operator">:</span> <span class="token string">'ELEMENT'</span>
  <span class="token punctuation">}</span>
  cdn <span class="token operator">=</span> <span class="token punctuation">{</span>
    css<span class="token operator">:</span> <span class="token punctuation">[</span>
      <span class="token string">'https://unpkg.com/element-ui/lib/theme-chalk/index.css'</span> <span class="token comment">// 提前引入elementUI样式</span>
    <span class="token punctuation">]</span><span class="token punctuation">,</span> <span class="token comment">// 放置css文件目录</span>
    js<span class="token operator">:</span> <span class="token punctuation">[</span>
      <span class="token string">'https://unpkg.com/vue/dist/vue.js'</span><span class="token punctuation">,</span> <span class="token comment">// vuejs</span>
      <span class="token string">'https://cdn.bootcdn.net/ajax/libs/vue-router/3.0.6/vue-router.min.js'</span><span class="token punctuation">,</span> <span class="token comment">// vue-router</span>
      <span class="token string">'https://unpkg.com/element-ui/lib/index.js'</span><span class="token punctuation">,</span> <span class="token comment">// element</span>
      <span class="token string">'https://cdn.jsdelivr.net/npm/xlsx@0.16.6/dist/xlsx.full.min.js'</span><span class="token punctuation">,</span> <span class="token comment">// xlsx 相关</span>
      <span class="token string">'https://cdn.jsdelivr.net/npm/xlsx@0.16.6/dist/jszip.min.js'</span><span class="token punctuation">,</span> <span class="token comment">// xlsx 相关</span>
      <span class="token string">'https://cdn.bootcdn.net/ajax/libs/vuex/3.1.0/vuex.min.js'</span><span class="token punctuation">,</span> <span class="token comment">// vuex</span>
      <span class="token string">'https://cdn.bootcdn.net/ajax/libs/echarts/5.1.2/echarts.min.js'</span> <span class="token comment">// echarts</span>
    <span class="token punctuation">]</span> <span class="token comment">// 放置js文件目录</span>
  <span class="token punctuation">}</span>
<span class="token punctuation">}</span>
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br><span class="line-number">10</span><br><span class="line-number">11</span><br><span class="line-number">12</span><br><span class="line-number">13</span><br><span class="line-number">14</span><br><span class="line-number">15</span><br><span class="line-number">16</span><br><span class="line-number">17</span><br><span class="line-number">18</span><br><span class="line-number">19</span><br><span class="line-number">20</span><br><span class="line-number">21</span><br><span class="line-number">22</span><br><span class="line-number">23</span><br><span class="line-number">24</span><br><span class="line-number">25</span><br><span class="line-number">26</span><br><span class="line-number">27</span><br><span class="line-number">28</span><br><span class="line-number">29</span><br></div></div><h3 id="注入cdn文件到模板"><a href="#注入cdn文件到模板" class="header-anchor">#</a> 注入CDN文件到模板</h3> <p>之后通过 <code>html-webpack-plugin</code>注入到 <code>index.html</code>之中:</p> <div class="language-js line-numbers-mode"><pre class="language-js"><code>config<span class="token punctuation">.</span><span class="token function">plugin</span><span class="token punctuation">(</span><span class="token string">'html'</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">tap</span><span class="token punctuation">(</span><span class="token parameter">args</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
  args<span class="token punctuation">[</span><span class="token number">0</span><span class="token punctuation">]</span><span class="token punctuation">.</span>cdn <span class="token operator">=</span> cdn
  <span class="token keyword">return</span> args
<span class="token punctuation">}</span><span class="token punctuation">)</span>
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br></div></div><p>找到 <code>public/index.html</code>。通过你配置的<code>CDN Config</code> 依次注入 css 和 js。</p> <div class="language-vue line-numbers-mode"><pre class="language-vue"><code><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>head</span><span class="token punctuation">&gt;</span></span>
  <span class="token comment">&lt;!-- 引入样式 --&gt;</span>
  &lt;% for(var css of htmlWebpackPlugin.options.cdn.css) { %&gt;
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>link</span> <span class="token attr-name">rel</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>stylesheet<span class="token punctuation">&quot;</span></span> <span class="token attr-name">href</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>&lt;%=css%&gt;<span class="token punctuation">&quot;</span></span><span class="token punctuation">&gt;</span></span>
  &lt;% } %&gt;
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>head</span><span class="token punctuation">&gt;</span></span>

<span class="token comment">&lt;!-- 引入JS --&gt;</span>
&lt;% for(var js of htmlWebpackPlugin.options.cdn.js) { %&gt;
  <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>script</span> <span class="token attr-name">src</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">&quot;</span>&lt;%=js%&gt;<span class="token punctuation">&quot;</span></span><span class="token punctuation">&gt;</span></span><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>script</span><span class="token punctuation">&gt;</span></span>
&lt;% } %&gt;
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br><span class="line-number">10</span><br><span class="line-number">11</span><br></div></div><p>最后，进行打包</p> <div class="language-bash line-numbers-mode"><pre class="language-bash"><code>$ <span class="token function">npm</span> run build:prod
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><h2 id="在nodejs环境中应用并代理跨域"><a href="#在nodejs环境中应用并代理跨域" class="header-anchor">#</a> 在nodejs环境中应用并代理跨域</h2> <p>**<code>目标</code>**将打包好的代码打包上线，并在nodejs中代理跨域</p> <h3 id="使用koa框架部署项目"><a href="#使用koa框架部署项目" class="header-anchor">#</a> 使用koa框架部署项目</h3> <blockquote><p>到现在为止，我们已经完成了一个前端工程师的开发流程，按照常规的做法，此时，运维会将我们的代码部署到阿里云的ngix服务上，对于我们而言，我们可以将其部署到本机的nodejs环境中</p></blockquote> <p>部署 自动化部署 /手动部署</p> <p>第一步，建立web服务文件夹  <strong><code>hrServer</code></strong></p> <div class="language-bash line-numbers-mode"><pre class="language-bash"><code>$ <span class="token function">mkdir</span> hrServer <span class="token comment">#建立hrServer文件夹 </span>
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><p>第二步，在该文件夹下，初始化npm</p> <div class="language-bash line-numbers-mode"><pre class="language-bash"><code>$ <span class="token function">npm</span> init -y
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><p>第三步，安装服务端框架koa(也可以采用express或者egg)</p> <div class="language-bash line-numbers-mode"><pre class="language-bash"><code>$ <span class="token function">npm</span> i koa koa-static
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><p>第四步，拷贝上小节打包的dist目录到**<code>hrServer/public</code>**下</p> <p>第五步，在根目录下创建app.js，代码如下</p> <div class="language-js line-numbers-mode"><pre class="language-js"><code><span class="token keyword">const</span> Koa  <span class="token operator">=</span> <span class="token function">require</span><span class="token punctuation">(</span><span class="token string">'koa'</span><span class="token punctuation">)</span>
<span class="token keyword">const</span> serve <span class="token operator">=</span> <span class="token function">require</span><span class="token punctuation">(</span><span class="token string">'koa-static'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>

<span class="token keyword">const</span> app <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">Koa</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
app<span class="token punctuation">.</span><span class="token function">use</span><span class="token punctuation">(</span><span class="token function">serve</span><span class="token punctuation">(</span>__dirname <span class="token operator">+</span> <span class="token string">&quot;/public&quot;</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">//将public下的代码静态化</span>
app<span class="token punctuation">.</span><span class="token function">listen</span><span class="token punctuation">(</span><span class="token number">3333</span><span class="token punctuation">,</span> <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
     console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token string">'人资项目启动'</span><span class="token punctuation">)</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span>
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br></div></div><blockquote><p>此时，我们可以访问，http://localhost:3333</p></blockquote> <p>页面出来了</p> <p><img src="/hrsass-notes/assets/img/image-20200805012430884.854a96d2.png" alt="image-20200805012430884"></p> <h3 id="解决history页面访问问题"><a href="#解决history页面访问问题" class="header-anchor">#</a> 解决history页面访问问题</h3> <p>但是，此时存在两个问题，</p> <ol><li><strong>当我们刷新页面，发现404</strong></li></ol> <blockquote><p>这是因为我们采用了history的模式，地址的变化会引起服务器的刷新，我们只需要在app.js对所有的地址进行一下处理即可</p></blockquote> <p>安装 koa中间件</p> <div class="language-bash line-numbers-mode"><pre class="language-bash"><code>$ <span class="token function">npm</span> i koa2-connect-history-api-fallback <span class="token comment">#专门处理history模式的中间件</span>
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><p><strong>注册中间件</strong></p> <div class="language-js line-numbers-mode"><pre class="language-js"><code><span class="token keyword">const</span> Koa  <span class="token operator">=</span> <span class="token function">require</span><span class="token punctuation">(</span><span class="token string">'koa'</span><span class="token punctuation">)</span>
<span class="token keyword">const</span> serve <span class="token operator">=</span> <span class="token function">require</span><span class="token punctuation">(</span><span class="token string">'koa-static'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">const</span>  <span class="token punctuation">{</span> historyApiFallback <span class="token punctuation">}</span> <span class="token operator">=</span> <span class="token function">require</span><span class="token punctuation">(</span><span class="token string">'koa2-connect-history-api-fallback'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">const</span> path <span class="token operator">=</span> <span class="token function">require</span><span class="token punctuation">(</span><span class="token string">'path'</span><span class="token punctuation">)</span>
<span class="token keyword">const</span> app <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">Koa</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token comment">// 这句话 的意思是除接口之外所有的请求都发送给了 index.html</span>
app<span class="token punctuation">.</span><span class="token function">use</span><span class="token punctuation">(</span><span class="token function">historyApiFallback</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
     whiteList<span class="token operator">:</span> <span class="token punctuation">[</span><span class="token string">'/prod-api'</span><span class="token punctuation">]</span>
 <span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>  <span class="token comment">// 这里的whiteList是 白名单的意思</span>
app<span class="token punctuation">.</span><span class="token function">use</span><span class="token punctuation">(</span><span class="token function">serve</span><span class="token punctuation">(</span>__dirname <span class="token operator">+</span> <span class="token string">&quot;/public&quot;</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">//将public下的代码静态化</span>

app<span class="token punctuation">.</span><span class="token function">listen</span><span class="token punctuation">(</span><span class="token number">3333</span><span class="token punctuation">,</span> <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
     console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token string">'人资项目启动'</span><span class="token punctuation">)</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span>
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br><span class="line-number">10</span><br><span class="line-number">11</span><br><span class="line-number">12</span><br><span class="line-number">13</span><br><span class="line-number">14</span><br></div></div><h3 id="解决生产环境跨域问题"><a href="#解决生产环境跨域问题" class="header-anchor">#</a> 解决生产环境跨域问题</h3> <ol><li>当点击登录时，发现接口404</li></ol> <blockquote><p>前面我们讲过，vue-cli的代理只存在于开发期，当我们上线到node环境或者ngix环境时，需要我们再次在环境中代理</p></blockquote> <p>在nodejs中代理</p> <p>安装跨域代理中间件</p> <div class="language-bash line-numbers-mode"><pre class="language-bash"><code>$ <span class="token function">npm</span> i koa2-proxy-middleware
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><p>配置跨越代理</p> <div class="language-js line-numbers-mode"><pre class="language-js"><code><span class="token keyword">const</span> proxy <span class="token operator">=</span> <span class="token function">require</span><span class="token punctuation">(</span><span class="token string">'koa2-proxy-middleware'</span><span class="token punctuation">)</span>

app<span class="token punctuation">.</span><span class="token function">use</span><span class="token punctuation">(</span><span class="token function">proxy</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
  targets<span class="token operator">:</span> <span class="token punctuation">{</span>
    <span class="token comment">// (.*) means anything</span>
    <span class="token string">'/prod-api/(.*)'</span><span class="token operator">:</span> <span class="token punctuation">{</span>
        target<span class="token operator">:</span> <span class="token string">'http://ihrm-java.itheima.net/api'</span><span class="token punctuation">,</span> <span class="token comment">//后端服务器地址</span>
        changeOrigin<span class="token operator">:</span> <span class="token boolean">true</span><span class="token punctuation">,</span>
        pathRewrite<span class="token operator">:</span> <span class="token punctuation">{</span>
            <span class="token string">'/prod-api'</span><span class="token operator">:</span> <span class="token string">&quot;&quot;</span>
        <span class="token punctuation">}</span>
    <span class="token punctuation">}</span>
  <span class="token punctuation">}</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">)</span>
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br><span class="line-number">10</span><br><span class="line-number">11</span><br><span class="line-number">12</span><br><span class="line-number">13</span><br><span class="line-number">14</span><br></div></div><p>注意：这里之所以用了<strong>pathRewrite</strong>，是因为生产环境的请求基础地址是 <strong>/prod-api</strong>，需要将该地址去掉</p> <p>此时，我们的项目就可以跨域访问了！</p> <blockquote><p>到现在为止，我们在十几天的时间里，完成了一个较为复杂的中台项目的解剖和开发，任何一个复杂的项目都是各种各样的功能通过合理的设计和布局组装而成的，所以未来我们每个同学要掌握的能力就是不论项目的难度和复杂度，都要学会技术的解耦和设计，这样我们的开发能力就会变得越来越强</p></blockquote> <p><strong>That is  All !</strong></p> <p><strong>感谢 ! ! !</strong></p></div> <footer class="page-edit"><!----> <!----></footer> <!----> </main></div><div class="global-ui"></div></div>
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