1、基本使用
1.1 方法一
在vue.config.js中添加如下配置:
devServer:{
proxy:"http://localhost:5000"
}
说明:
- 优点:配置简单,请求资源时直接发给前端(8080)即可。
- 缺点:不能配置多个代理,不能灵活的控制请求是否走代理。
- 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)
1.2 方法二
编写vue.config.js配置具体代理规则:
module.exports = {
devServer: {
proxy: {
'/api1': {// 匹配所有以 '/api1'开头的请求路径
target: 'http://localhost:5000',// 代理目标的基础路径
changeOrigin: true,
pathRewrite: {'^/api1': ''}
},
'/api2': {// 匹配所有以 '/api2'开头的请求路径
target: 'http://localhost:5001',// 代理目标的基础路径
changeOrigin: true,
pathRewrite: {'^/api2': ''}
}
}
}
}
/*
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
*/
说明:
- 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。
2、GitHub用户搜索案例
- 实现效果:
源代码已上传至个人主页。
结构目录:
代码示例:
main文件
import Vue from 'vue'
import App from './App.vue'
import 'bootstrap/dist/css/bootstrap.css'
import 'bootstrap/dist/js/bootstrap.js'
Vue.config.productionTip = false
new Vue({
el: '#app',
render: h => h(App),
beforeCreate() {
Vue.prototype.$bus = this
}
// 安装全局事件总线
})
App
组件
<template>
<div class="container">
<Search/>
<List/>
</div>
</template>
<script>
import Search from './components/Search.vue'
import List from './components/List.vue'
export default {
name:'App',
components:{Search,List}
};
</script>
Search组件
<template>
<nav class="navbar navbar-light bg-light p-4">
<div class="container-fluid">
<a class="navbar-brand">Search Github Users</a>
<form class="d-flex">
<input
class="form-control me-2"
type="search"
placeholder="Search"
aria-label="Search"
v-model="keyWord"
/>
<button class="btn btn-outline-success" @click.prevent="searchUsers">
Search
</button>
</form>
</div>
</nav>
</template>
<script>
import axios from "axios";
export default {
name: "Search",
data() {
return {
keyWord: "",
};
},
methods: {
searchUsers() {
// 请求前的数据
this.$bus.$emit("updateListData", {
isFirst: false,
isLoading: true,
errmsg: "",
users: [],
});
axios({
method: "GET",
url: `https://api.github.com/search/users?q=${this.keyWord}`,
}).then(
(response) => {
console.log(response.data.items);
// 请求成功后的数据
this.$bus.$emit("updateListData", {
isLoading: false,
errmsg: "",
users: response.data.items,
});
},
(error) => {
// 请求错误后的数据
this.$bus.$emit("updateListData", {
isLoading: false,
errmsg: error.message,
users: [],
});
}
);
},
},
};
</script>
<style>
</style>
List组件
<template>
<div class="row row-cols-1 row-cols-md-1 g-4 mt-3">
<div class="col">
<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>
</div>
<!-- 欢迎词 -->
<div v-show="info.isFirst">
<div class="alert alert-success" role="alert">
<h4 class="alert-heading">welcome to mo world</h4>
<p>Click Search at the top</p>
<hr />
<p class="mb-0">You'll get the list of users you want</p>
</div>
</div>
<!-- 数据加载中 -->
<div v-show="info.isLoading" class="text-center">
<div class="spinner-border text-primary" role="status">
<span class="visually-hidden">Loading...</span>
</div>
<div class="spinner-border text-secondary" role="status">
<span class="visually-hidden">Loading...</span>
</div>
<div class="spinner-border text-success" role="status">
<span class="visually-hidden">Loading...</span>
</div>
<div class="spinner-border text-danger" role="status">
<span class="visually-hidden">Loading...</span>
</div>
<div class="spinner-border text-warning" role="status">
<span class="visually-hidden">Loading...</span>
</div>
<div class="spinner-border text-info" role="status">
<span class="visually-hidden">Loading...</span>
</div>
<div class="spinner-border text-light" role="status">
<span class="visually-hidden">Loading...</span>
</div>
<div class="spinner-border text-dark" role="status">
<span class="visually-hidden">Loading...</span>
</div>
</div>
<!-- 错误 -->
<div v-show="info.errmsg">{{ info.errmsg }}</div>
</div>
</template>
<script>
export default {
name: "List",
data() {
return {
info: {
isFirst: true,//判断是否为第一次打开页面
isLoading: false,//判断是否点击了按钮,数据正在在加载中
errmsg: "",//返回一个错误信息
users: [],//渲染列表
},
};
},
mounted() {
this.$bus.$on("updateListData", (dataObj) => {
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: 0.75rem;
margin-bottom: 2rem;
border: 1px solid #efefef;
text-align: center;
}
.card > img {
margin-bottom: 0.75rem;
border-radius: 100px;
}
.card-text {
font-size: 85%;
}
</style>
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