解决vue-loader加载不上的问题

Z时代
2024-01-10
分类：IT

前言：

webpack 整合vue 的时候，遇到了一个大坑，找了好多资料才弄好

我们知道 webpack - - -默认无法解析 .vue 为后缀的文件，所以webpack需要下载一个解析 .vue 文件的 loader

下载 vue-loader 的方法有许多，我是使用

vue-loader 是要依赖 vue 的，所以先下载 vue

npm i vue -S
cnpm i vue-loader vue-template-compiler -D

webpack.config.js 中配置相关信息注意：这里配置好了

再给大家看一下我的 package.json 文件

注意：

css-loader style-loader 等等我都已经下载配置完成


{
 "name": "webpack-study",
 "version": "1.0.0",
 "description": "",
 "main": "index.js",
 "scripts": {
 "test": "echo \"Error: no test specified\" && exit 1",
 "dev": "webpack-dev-server --open --port 3000 --contentBase src --hot"
 },
 "keywords": [],
 "author": "",
 "license": "ISC",
 "devDependencies": {
 "babel-core": "^6.26.3",
 "babel-loader": "^7.1.5",
 "babel-plugin-transform-runtime": "^6.23.0",
 "babel-preset-env": "^1.7.0",
 "babel-preset-stage-0": "^6.24.1",
 "css-loader": "^1.0.0",
 "file-loader": "^2.0.0",
 "html-webpack-plugin": "^3.2.0",
 "less": "^3.8.1",
 "less-loader": "^4.1.0",
 "node-sass": "^4.9.3",
 "sass-loader": "^7.1.0",
 "style-loader": "^0.22.1",
 "url-loader": "^1.1.1",
 "vue-loader": "^15.4.1",
 "vue-template-compiler": "^2.5.17",
 "webpack": "^4.17.1",
 "webpack-dev-server": "^3.1.5"
 },
 "dependencies": {
 "vue": "^2.5.17",
 "webpack-cli": "^3.1.0"
 }
}

重头戏来了，即使这样运行： npm run dev

仍然无法识别 vue-loader

错误原因：

vue-loader@15.*之后除了必须带有VueLoaderPlugin

解决方案：

需要使用插件VueLoaderPlugin

在webpack.config.js里用const VueLoaderPlugin = require('vue-loader/lib/plugin')引入，

然后在module.exports对象里添加plugins:[new VueLoaderPlugin()]

再次运行项目就可以啦~~~

补充知识：vue-loader加载不上报错* ./node_modules/vue-loader/lib/index.js You may need an additional loader to handle

报错代码：


ERROR in ./src/login.vue?vue&type=template&id=19e76240& 2:0
Module parse failed: Unexpected token (2:0)
File was processed with these loaders:
 * ./node_modules/vue-loader/lib/index.js
You may need an additional loader to handle the result of these loaders.
| 
> <h1>这是使用.vue文件渲染出来的</h1>
| 
| 
 @ ./src/login.vue 1:0-84 10:2-8 11:2-17 30:4-35:6 30:68-35:5 32:16-22 33:25-40
 @ ./src/main.js

解决办法：


const path = require('path');
const htmlWebpackplugin = require('html-webpack-plugin');
const VueLoaderPlugin = require('vue-loader/lib/plugin'); 
module.exports = {
  entry: path.join(__dirname,'./src/main.js'),
  output: {
    path: path.join(__dirname, './dist'),
    filename: 'bundle.js'
  },
  plugins: [
    new htmlWebpackplugin({ //创建一个在内存中生成的html页面的插件
      template: path.join(__dirname, './src/index.html'),
      filename: 'index.html'
    }),
    new VueLoaderPlugin()
  ],
  module: { //这个节点用于配置所有的第三方模块加载器
    rules: [
      {test: /\.css$/, use:['style-loader','css-loader']},//配置处理.css文件的第三方处理规则
      {test: /\.less$/, use: ["style-loader",'css-loader','less-loader']},
      {test: /\.scss$/, use: ["style-loader",'css-loader','sass-loader']},
      {test: /\.(jpg|png|gif|bmp|jpeg)$/, use: "url-loader?limit=8000"},
      {test: /\.(tff|eot|svg|woff|woff2)$/, use: "url-loader"},
      {test:/\.js$/, use:'babel-loader',exclude:/node_modules/},
      {test: /\.vue$/, use: 'vue-loader'}
    ]
  }
};