详解windows下vue-cli及webpack 构建网站(二)导入bootstrap样式

1、先安装好vue-cli，如果还没有安装好的可以参考：《windows下vue-cli及webpack 构建网站(一)环境安装》

2、安装好之后Vue的欢迎界面，我们要做个例子导入bootstrap的样式，就先去复制一份bootstrap的导航样式过来替换掉Vue的欢迎页面吧，打开Src文件夹下面的components组件目录，然后打开 Hello.vue文件，把

<h1>{{ msg }}</h1>
  <h2>Essential Links</h2>
  <ul>
   <li><a href="https://vuejs.org" rel="external nofollow" target="_blank">Core Docs</a></li>
   <li><a href="https://forum.vuejs.org" rel="external nofollow" target="_blank">Forum</a></li>
   <li><a href="https://gitter.im/vuejs/vue" rel="external nofollow" target="_blank">Gitter Chat</a></li>
   <li><a href="https://twitter.com/vuejs" rel="external nofollow" target="_blank">Twitter</a></li>
   <br>
   <li><a href="http://vuejs-templates.github.io/webpack/" rel="external nofollow" target="_blank">Docs for This Template</a></li>
  </ul>
  <h2>Ecosystem</h2>
  <ul>
   <li><a href="http://router.vuejs.org/" rel="external nofollow" target="_blank">vue-router</a></li>
   <li><a href="http://vuex.vuejs.org/" rel="external nofollow" target="_blank">vuex</a></li>
   <li><a href="http://vue-loader.vuejs.org/" rel="external nofollow" target="_blank">vue-loader</a></li>
   <li><a href="https://github.com/vuejs/awesome-vue" rel="external nofollow" target="_blank">awesome-vue</a></li>
  </ul>
 </div>
</template>

内容改成

<template>
 <nav class="navbar navbar-default" role="navigation">
  <div class="container-fluid">
   <!-- Brand and toggle get grouped for better mobile display -->
   <div class="navbar-header">
    <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1">
     <span class="sr-only">Toggle navigation</span>
     <span class="icon-bar"></span>
     <span class="icon-bar"></span>
     <span class="icon-bar"></span>
    </button>
    <a class="navbar-brand" href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >{{ msg }}</a>
   </div>

   <!-- Collect the nav links, forms, and other content for toggling -->
   <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
    <ul class="nav navbar-nav">
     <li class="active"><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >Link</a></li>
     <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >Link</a></li>
     <li class="dropdown">
      <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="dropdown-toggle" data-toggle="dropdown">Dropdown <span class="caret"></span></a>
      <ul class="dropdown-menu" role="menu">
       <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >Action</a></li>
       <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >Another action</a></li>
       <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >Something else here</a></li>
       <li class="divider"></li>
       <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >Separated link</a></li>
       <li class="divider"></li>
       <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >One more separated link</a></li>
      </ul>
     </li>
    </ul>
    <form class="navbar-form navbar-left" role="search">
     <div class="form-group">
      <input type="text" class="form-control" placeholder="Search">
     </div>
     <button type="submit" class="btn btn-default">Submit</button>
    </form>
    <ul class="nav navbar-nav navbar-right">
     <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >Link</a></li>
     <li class="dropdown">
      <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="dropdown-toggle" data-toggle="dropdown">Dropdown <span class="caret"></span></a>
      <ul class="dropdown-menu" role="menu">
       <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >Action</a></li>
       <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >Another action</a></li>
       <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >Something else here</a></li>
       <li class="divider"></li>
       <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >Separated link</a></li>
      </ul>
     </li>
    </ul>
   </div><!-- /.navbar-collapse -->
  </div><!-- /.container-fluid -->
 </nav>
</template>

这时候运行vue 显示的页面变成：

现在我们加入的bootstrap导航代码已经可以显示出来了，但是有点丑，是因为我们还没把bootstrap的CSS文件加载过来，接下来我们就是要导入CSS文件和js文件了。

3、下载Bootstrap文件包，然后把css、js、fonts三个文件夹复制到vue项目的src\assets目录下。

4、让vue支持jQuery需要先安装jquery插件，通过cmd命令进入项目文件夹，然后运行 cnpm install jquery --save-dev 安装插件

接着分别运行

cnpm install style-loader --save-dev
cnpm install css-loader --save-dev
cnpm install file-loader --save-dev

安装支持css的插件。

5、修改build文件夹下面的webpack.base.conf.js文件，让其支持外部的css和js，首先打开文件后在头部加入：

var webpack = require('webpack')

然后在

module.exports = {
 entry: {
  app: './src/main.js'
 },

后面加

plugins: [
 new webpack.ProvidePlugin({
  $: "jquery",
  jQuery: "jquery",
  "windows.jQuery": "jquery"
 })
],

把

alias: {
 'vue$': 'vue/dist/vue.common.js',
 'src': path.resolve(__dirname, '../src'),
 'assets': path.resolve(__dirname, '../src/assets'),
 'components': path.resolve(__dirname, '../src/components')
}

改成

alias: {
 'vue$': 'vue/dist/vue.common.js',
 'src': path.resolve(__dirname, '../src'),
 'assets': path.resolve(__dirname, '../src/assets'),
 'components': path.resolve(__dirname, '../src/components'),
 jquery: "jquery/src/jquery"
}

保存文件

6、接着修改 src文件夹下面的main.js文件，打开文件之后在顶部加入

import './assets/css/bootstrap.min.css'
import './assets/js/bootstrap.min'

接着保存之后重启一下服务 npm run dev

如果提示错误

说明bootstrap.js文件格式不匹配不能通过webpack的格式检查，这样我们就需要在webpack的配置文件里面把js文件设置成不检查格式，打开build文件夹下的webpack.base.conf.js文件，找到 preLoaders 下面的

{
 test: /\.js$/,
 loader: 'eslint',
 include: projectRoot,
 exclude: /node_modules/
}

代码，修改成

{
 test: /\.js$/,
 loader: 'eslint',
 include: projectRoot,
 exclude: [/node_modules/,/js/]
}

接着保存之后运行npm  run dev

就可以看到导航的效果出来了

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