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The specific steps for Vue to implement server-side rendering based on Nuxt.js
The specific steps for Vue to implement server-side rendering based on Nuxt.js
This time I will bring you the specific steps for Vue to implement server-side rendering based on Nuxt.js. What are the precautions for Vue to implement server-side rendering based on Nuxt.js? The following is a practical case. Get up and take a look.
Use Vue directly to build a front-end single-page application. The page source code only has a few simple lines of HTML, which is not conducive to the SEO of the website. At this time, server-side rendering is requiredOctober 2016 On the 25th, the team behind zeit.co released a React server-side rendering application framework Next.jsA few hours later, a server-side rendering application framework based on Vue.js came into being, and Next .js has the same purpose, this is Nuxt.js1. Quick template
On the premise that vue-cli has been installed, you can quickly Create a nuxt project templatevue init nuxt-community/starter-template MyProject
yarn install) After installing the dependencies , you can directly npm run dev in development environmentStart the project
The default startup address is http://localhost:3000/, you can usepackage. Add the following configuration to json to modify the host port number
"config": {
"nuxt": {
"host": "0.0.0.0",
"port": "7788"
}
},2. Important Directory
The generated project directory is as follows
are reserved by nuxt by default and cannot be modified.
There are three directories that are critical for price comparison:1. components component directory
non-page level components, such as header, footer and other public components
The components in this directory have the methods and characteristics of regular vue components and will not be extended by nuxt.js Features2. layouts layout directory
<template> <p> <my-header></my-header> <nuxt/> <my-footer></my-footer> </p> </template>
Newly added error.vue is used as an error page. For specific writing methods, please refer to the official documentation
3. pages page directory
## Used to store page-level components, nuxt will generate routes based on the page structure in this directory
For example, the page structure in the picture above will generate such routing configuration:
router: {
routes: [
{
name: 'index',
path: '/',
component: 'pages/index.vue'
},
{
name: 'about',
path: '/about',
component: 'pages/about.vue'
},
{
name: 'classroom',
path: '/classroom',
component: 'pages/classroom.vue',
children: [
{
path: 'student',
component: 'pages/classroom/student.vue',
name: 'student'
},
{ //定义带参数的动态路由，需要创建对应的以下划线作为前缀的 Vue 文件或目录
path: ':id',
component: 'pages/classroom/_id.vue',
name: 'classroom-id'
}
]
}
]
}In addition, the vue components in this directory also have some special features provided by Nuxt.js
Among them, the
asyncDatamethod is more commonly used and supports asynchronous data processingThis method will It is called before each load of the
page component, and then obtains the data and returns it to the current componentasyncData ({ params, error }) {
return axios.get(`api/posts/${params.id}`)
.then((res) => {
return { name: res.data.name}
})
.catch((e) => {
error({ statusCode: 404, message: 'not found' })
})
}
You can view it hereSince the asyncData method is called before the component is initialized, there is no way to reference the instance object of the component through this within the method
Three . Use plug-insIf you need to introduce other third-party plug-ins into the project, you can introduce them directly into the page, so that when packaging, the plug-ins will be packaged into the corresponding js of the page.
But if the same plug-in is introduced on other pages, it will be packaged repeatedly. If there is no need for paging packaging, you can configure plugins
at this time.以 element-ui 为例，在安装了 element-ui 之后，在 plugins 目录下创建 elementUI.js
然后在根目录的 nuxt.config.js 中添加配置项 build.vendor 和 plugins
build: {
vendor: ['~/plugins/elementUI.js']
},
plugins: [
{src: '~/plugins/elementUI.js'},
]这里的 plugins 属性用来配置 vue.js 插件，也就是 可以用 Vue.user() 方法 的插件
默认只需要 src 属性，另外还可以配置 ssr: false，让该文件只在客户端被打包引入
如果是像 axios 这种第三方 （不能 use） 插件，只需要在 plugins 目录下创建 axios.js
// axios.js
import Vue from 'vue'
import axios from 'axios'
const service = axios.create({
baseURL: '/api'
})
Vue.prototype.$ajax = axios
export default service然后在 build.vendor 中添加配置 （不需要配置 plugins）
build: {
vendor: ['~/plugins/axios.js']
}这样在打包的时候，就会把 axios 打包到 vendor.js 中
四、Vuex 状态树
如果在 store 目录下创建了 index.js，nuxt.js 会根据该目录下的文件创建 Vuex 状态树
// store/index.js
import Vue from 'vue'
import Vuex from 'vuex'
import Axios from '~/plugins/axios.js';
Vue.use(Vuex)
const store = () => new Vuex.Store({
state: {
author: 'WiseWrong',
info: ''
},
mutations: {
setInfo (state, val) {
state.info = val
}
},
actions: {
loadAboutMeInfo ({commit, state}) {
return Axios.get(`/about`)
.then(res => {
console.log('ajax is success')
console.log(res.data.info)
commit('setInfo', res.data.info)
})
.catch(err => {
console.log('error')
})
}
}
})
export default storeNuxt.js 内置引用了 vuex 模块，不需要额外安装
上面的代码中，我在 actions 中写了一个 loadAboutMeInfo() 方法，用来请求 /api/about 接口
然后在 about.vue 页面中调用
// about.vue
<template>
<section class="container">
<p>
<img src="~/assets/about.png" alt="">
</p>
<h1>{{$store.state.info}}</h1>
</section>
</template>
<script>
export default {
fetch({ store }) {
return store.dispatch('loadAboutMeInfo')
},
name: 'about',
data () {
return {}
}
}
</script>成果演示：
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