import axios from 'axios'
开启8080代理服务器方式:nginx(较复杂,需借助后端知识) 、vue-cli(重点)。
GET http://localhost:8081/students 500 (Internal Server Error)
错误。工作方式:若按照上述配置代理,当请求了前端不存在的资源时,那么该请求会转发给服务器 (优先匹配前端资源)
优点:配置简单,请求资源时直接发给前端(8080)即可。
缺点:1.不能配置多个代理
2.不能灵活控制走不走代理
changeOrigin设置为true时,服务器收到的请求头中的host为:localhost:5000 changeOrigin设置为false时,服务器收到的请求头中的host为:localhost:8080 changeOrigin默认值为true
优点:可以配置多个代理,且可以灵活的控制请求是否走代理。
缺点:配置略微繁琐,请求资源时必须加前缀。
<template>
<section class="jumbotron">
<h3 class="jumbotron-heading">Search Github Usersh3>
<div>
<input type="text" placeholder="enter the name you search" v-model="keyWord"/>
<button @click="searchUsers">Searchbutton>
div>
section>
template>
<script>
// 引入axios
import axios from 'axios'
export default {
name:'Search',
data() {
return {
keyWord:''
}
},
methods: {
searchUsers() {
// 模板字符串
axios.get(`https://api.github.com/search/users?q=${this.keyWord}`).then(
response => {
console.log('请求成功了');
this.$bus.$emit('getUsers',response.data.items)
},
error => {
console.log('请求失败了',error.message);
}
)
}
}
}
script>
<template>
<div class="row">
<div class="card" v-for="user in users" :key="user.login">
<a :href="user.html_url" target="_blank">
<img :src="user.avatar_url" style='width: 100px'/>
a>
<p class="card-text">{{user.login}}p>
div>
div>
template>
<script>
export default {
name:'List',
data() {
return {
users:[]
}
},
// 利用全局事件总线
mounted() {
this.$bus.$on('getUsers',(users)=>{
console.log('我是List组件,收到了数据:',users);
this.users = users
})
}
}
script>
<style>
.album {
min-height: 50rem; /* Can be removed; just added for demo purposes */
padding-top: 3rem;
padding-bottom: 3rem;
background-color: #f7f7f7;
}
.card {
float: left;
width: 33.333%;
padding: .75rem;
margin-bottom: 2rem;
border: 1px solid #efefef;
text-align: center;
}
.card > img {
margin-bottom: .75rem;
border-radius: 100px;
}
.card-text {
font-size: 85%;
}
style>
<template>
<div class="row">
<div v-show="info.users.length" class="card" v-for="user in info.users" :key="user.login">
<a :href="user.html_url" target="_blank">
<img :src="user.avatar_url" style='width: 100px'/>
a>
<p class="card-text">{{user.login}}p>
div>
<h1 v-show="info.isFirst">欢迎使用!h1>
<h1 v-show="info.isLoading">加载中....h1>
<h1 v-show="info.errMsg">{{info.errMsg}}h1>
div>
template>
<script>
export default {
name:'List',
data() {
return {
info:{
isFirst:true, // 是否为初次展示
isLoading:false, // 是否处于加载中
errMsg:'', // 存储错误信息
users:[]
}
}
},
// 利用全局事件总线
mounted() {
// this.$bus.$on('updateListData',(isFirst,isLoading,errMsg,users)=>{
this.$bus.$on('updateListData',(dataObj)=>{
// console.log('我是List组件,收到了数据:',users);
/* this.isFirst = isFirst
this.isLoading = isLoading
this.errMsg = errMsg
this.users = users */
// this.info = dataObj // 此写法没错 但由于isFirst后续不再变化没有书写 会弄丢isFirst数据
// 因此通过字面量的形式去合并对象
this.info = {...this.info,...dataObj}
})
}
}
script>
<style>
.album {
min-height: 50rem; /* Can be removed; just added for demo purposes */
padding-top: 3rem;
padding-bottom: 3rem;
background-color: #f7f7f7;
}
.card {
float: left;
width: 33.333%;
padding: .75rem;
margin-bottom: 2rem;
border: 1px solid #efefef;
text-align: center;
}
.card > img {
margin-bottom: .75rem;
border-radius: 100px;
}
.card-text {
font-size: 85%;
}
style>
<template>
<section class="jumbotron">
<h3 class="jumbotron-heading">Search Github Usersh3>
<div>
<input type="text" placeholder="enter the name you search" v-model="keyWord"/>
<button @click="searchUsers">Searchbutton>
div>
section>
template>
<script>
// 引入axios
import axios from 'axios'
export default {
name:'Search',
data() {
return {
keyWord:''
}
},
methods: {
searchUsers() {
// 请求前先更新List的数据
this.$bus.$emit('updateListData',{isFirst:false,isLoading:true,errMsg:'',users:[]})
// 发送请求
// 模板字符串
axios.get(`https://api.github.com/search/users?q=${this.keyWord}`).then(
response => {
console.log('请求成功了');
// this.$bus.$emit('getUsers',response.data.items)
// 请求成功后更新List的数据
// 因为isFirst后续不再发生变化 故可删掉
this.$bus.$emit('updateListData',{isLoading:false,errMsg:'',users:response.data.items})
},
error => {
console.log('请求失败了',error.message);
// 请求失败后更新List的数据
this.$bus.$emit('updateListData',{isLoading:false,errMsg:error.message,users:[]})
}
)
}
}
}
script>
<template>
<div class="container">
<Category title="美食" :listData="foods"/>
<Category title="游戏" :listData="games"/>
<Category title="电影" :listData="films"/>
div>
template>
<script>
import Category from './components/Category.vue'
export default {
name:'App',
components:{Category},
data() {
return {
foods:['火锅','烧烤','小龙虾','牛排'],
games:['红色警戒','穿越火线','劲舞团','超级玛丽'],
films:['《教父》','《拆弹专家》','《你好,李焕英》','《米奇妙妙屋》']
}
}
}
script>
<style lang="css">
.container {
display: flex;
justify-content: space-around;
}
style>
Category.vue:
<template>
<div class="category">
<h3>{{title}}分类h3>
<ul>
<li v-for="(item,index) in listData" :key="index">{{item}}li>
ul>
div>
template>
<script>
export default {
name:'Category',
props:['listData','title']
}
script>
<style>
.category {
background-color: skyblue;
width: 200px;
height: 300px;
}
h3 {
text-align: center;
background-color: orange;
}
style>
<template>
<div class="container">
<Category title="美食">
<img src="https://s3.ax1x.com/2021/01/16/srJlq0.jpg" alt="">
Category>
<Category title="游戏">
<ul>
<li v-for="(g,index) in games" :key="index">{{g}}li>
ul>
Category>
<Category title="电影">
<video controls src="http://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4">video>
Category>
div>
template>
<script>
import Category from './components/Category.vue'
export default {
name:'App',
components:{Category},
data() {
return {
foods:['火锅','烧烤','小龙虾','牛排'],
games:['红色警戒','穿越火线','劲舞团','超级玛丽'],
films:['《教父》','《拆弹专家》','《你好,李焕英》','《米奇妙妙屋》']
}
},
}
script>
<style scoped>
.container {
display: flex;
justify-content: space-around;
}
img {
width: 100%;
}
video {
width: 100%;
}
style>
Category.vue:
<template>
<div class="category">
<h3>{{title}}分类h3>
<slot>我是一些默认值,当使用者没有传递具体结构时,我会出现slot>
div>
template>
<script>
export default {
name:'Category',
props:['title']
}
script>
<style>
.category {
background-color: skyblue;
width: 200px;
height: 300px;
}
h3 {
text-align: center;
background-color: orange;
}
style>
<template>
<div class="container">
<Category title="美食">
<img slot="center" src="https://s3.ax1x.com/2021/01/16/srJlq0.jpg" alt="">
<a slot="footer" href="https://home.meishichina.com/recipe.html">更多美食a>
Category>
<Category title="游戏">
<ul slot="center">
<li v-for="(g,index) in games" :key="index">{{g}}li>
ul>
<div class="foot" slot="footer">
<a href="https://www.baidu.com/">单机游戏a>
<a href="https://www.baidu.com/">网络游戏a>
div>
Category>
<Category title="电影">
<video slot="center" controls src="http://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4">video>
<template v-slot:footer>
<div class="foot">
<a href="https://www.baidu.com/">经典a>
<a href="https://www.baidu.com/">热门a>
<a href="https://www.baidu.com/">推荐a>
div>
<h4>欢迎前来观影!h4>
template>
Category>
div>
template>
<script>
import Category from './components/Category.vue'
export default {
name:'App',
components:{Category},
data() {
return {
foods:['火锅','烧烤','小龙虾','牛排'],
games:['红色警戒','穿越火线','劲舞团','超级玛丽'],
films:['《教父》','《拆弹专家》','《你好,李焕英》','《米奇妙妙屋》']
}
},
}
script>
<style scoped>
.container,.foot {
display: flex;
justify-content: space-around;
}
img {
width: 100%;
}
video {
width: 100%;
}
h4 {
text-align: center;
}
a {
display: block;
text-align: center;
}
style>
Category.vue:
<template>
<div class="category">
<h3>{{title}}分类h3>
<slot name="center">我是一些默认值,当使用者没有传递具体结构时,我会出现1slot>
<slot name="footer">我是一些默认值,当使用者没有传递具体结构时,我会出现2slot>
div>
template>
<script>
export default {
name:'Category',
props:['title']
}
script>
<style>
.category {
background-color: skyblue;
width: 200px;
height: 300px;
}
h3 {
text-align: center;
background-color: orange;
}
style>
<template>
<div class="container">
<Category title="游戏">
<template scope="atguigu">
<ul>
<li v-for="(g,index) in atguigu.games" :key="index">{{g}}li>
ul>
template>
Category>
<Category title="游戏">
<template scope="{games}">
<ol>
<li v-for="(g,index) in games" :key="index">{{g}}li>
ol>
template>
Category>
<Category title="游戏">
<template slot-scope="{games}">
<h4 v-for="(g,index) in games" :key="index">{{g}}h4>
template>
Category>
div>
template>
<script>
import Category from './components/Category.vue'
export default {
name:'App',
components:{Category},
}
script>
<style scoped>
.container,.foot {
display: flex;
justify-content: space-around;
}
img {
width: 100%;
}
video {
width: 100%;
}
h4 {
text-align: center;
}
a {
display: block;
text-align: center;
}
style>
Category.vue:
<template>
<div class="category">
<h3>{{title}}分类h3>
<slot :games="games">我是默认的一些内容slot>
div>
template>
<script>
export default {
name:'Category',
props:['title'],
data() {
return {
games:['红色警戒','穿越火线','劲舞团','超级玛丽'],
}
},
}
script>
<style>
.category {
background-color: skyblue;
width: 200px;
height: 300px;
}
h3 {
text-align: center;
background-color: orange;
}
style>