Web Front-end
JS Tutorial
What should we pay attention to in vue2.0 axios cross-domain and rendering?
What should we pay attention to in vue2.0 axios cross-domain and rendering?
This time I will bring you what you need to pay attention to in vue2.0 axios cross-domain and rendering. What are the notes in vue2.0 axios cross-domain and rendering. The following is a practical case. Let’s take a look. take a look.
(Scaffolding vue-cli used)
Step one: Use the following statement in main.js
import axios from 'axios'; Vue.prototype.$axios=axios;
Then in other vue components, you can call this.$axios and use
Step 2: Configure proxyTable in webpack (index.js under config )
dev:
{
加入以下
proxyTable:
{
'/api':
{
target:
'http://api.douban.com',//设置你调用的接口域名和端口号
别忘了加http
changeOrigin:
true,
pathRewrite:
{
'^/api':
'/'//这里理解成用‘/api'代替target里面的地址，后面组件中我们掉接口时直接用api代替
比如我要调用'http://api.douban.com/v2/movie/top250'，直接写‘/api/v2/movie/top250'即可
}
}
},Step Three:
Try it, the cross-domain is successful, but please note, this is just The cross-domain problem is solved in the development environment (dev). If it is actually deployed on the server in the production environment, there will still be cross-domain problems if it is not from the same origin. For example, the server port we deployed is 3001, which requires joint debugging of the front and back ends. The first step is for the front end. It can be tested separately in production and development environments. In config/dev.env.js and prod.env.js, that is, in the development/production environment, configure the requested address API_HOST respectively. In the development environment, we use the above configuration. The proxy address api, the normal interface address is used in the production environment, so configure it like this
module.exports = merge(prodEnv, {
NODE_ENV: '"development"',//开发环境
API_HOST:"/api/"
})module.exports = {
NODE_ENV: '"production"',//生产环境
API_HOST:'"http://api.douban.com"'
}Of course, you can directly request http://api.douban.com regardless of the development or production environment. After configuration, the program will automatically determine whether it is a development or production environment during testing, and then automatically match API_HOST. We can use process.env.API_HOST in any component to use the address such as
instance.post(process.env.API_HOST+'user/login', this.form)
and then after the second step The end server can configure cros cross-domain, which is access-control-allow-origin: * means allowing all access. To sum up: In the development environment, our front-end can configure a proxy to cross-domain. In a real production environment, we need the cooperation of the back-end. A certain expert said: This method is not easy to use in IE9 and below. If compatibility is required, the best way is to add a proxy to the server port on the backend. The effect is similar to the webpack proxy during development.
Step 4:
<template>
<p>
<ul>
<li v-for="item in movieArr">
<span>{{item.title}}</span>
</li>
</ul>
<button @click="sayOut">渲染</button>
</p>
</template>
<script>
export default {
data () {
return {
movieArr : []
}
},
methods: {
sayOut () {
this.$axios.get('/api/v2/movie/top250')
.then((response) => {
console.log(response.data.subjects)
this.movieArr = response.data.subjects // 这里要强调一下这个this 箭头函数指的是它的父级也就是vue实例 然后不用箭头函数的话 this是一个undefined 无法.movieArr来给他赋值 这里要注意一下 我被坑了半天 希望小伙伴不要被坑
})
}
}
}
</script>
<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>
</style>I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related matters on the php Chinese website article!
Recommended reading:
How to use vue2.0axios cross-domain and rendering
How to drag images freely with Vue.js move
The above is the detailed content of What should we pay attention to in vue2.0 axios cross-domain and rendering?. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
What should I do if 'Uncaught (in promise) Error: Request failed with status code 500' occurs when using axios in a Vue application?
Jun 24, 2023 pm 05:33 PM
It is very common to use axios in Vue applications. axios is a Promise-based HTTP client that can be used in browsers and Node.js. During the development process, the error message "Uncaught(inpromise)Error: Requestfailedwithstatuscode500" sometimes appears. For developers, this error message may be difficult to understand and solve. This article will explore this
Choice of data request in Vue: Axios or Fetch?
Jul 17, 2023 pm 06:30 PM
Choice of data request in Vue: AxiosorFetch? In Vue development, handling data requests is a very common task. Choosing which tool to use for data requests is a question that needs to be considered. In Vue, the two most common tools are Axios and Fetch. This article will compare the pros and cons of both tools and give some sample code to help you make your choice. Axios is a Promise-based HTTP client that works in browsers and Node.
What should I do if 'TypeError: Failed to fetch' occurs when using axios in a Vue application?
Jun 24, 2023 pm 11:03 PM
Recently, during the development of Vue applications, I encountered a common problem: "TypeError: Failedtofetch" error message. This problem occurs when using axios to make HTTP requests and the backend server does not respond to the request correctly. This error message usually indicates that the request cannot reach the server, possibly due to network reasons or the server not responding. What should we do after this error message appears? Here are some workarounds: Check your network connection due to
How to solve the problem of 'Error: Network Error' when using axios in Vue application?
Jun 25, 2023 am 08:27 AM
How to solve the problem of "Error: NetworkError" when using axios in Vue application? In the development of Vue applications, we often use axios to make API requests or obtain data, but sometimes we encounter "Error: NetworkError" in axios requests. What should we do in this case? First of all, you need to understand what "Error:NetworkError" means. It usually means that the network connection
Efficiently utilize Vue and Axios to implement batch processing of front-end data
Jul 17, 2023 pm 10:43 PM
Efficiently utilize Vue and Axios to implement batch processing of front-end data. In front-end development, data processing is a common task. When we need to process a large amount of data, processing the data will become very cumbersome and inefficient if there is no effective method. Vue is an excellent front-end framework, and Axios is a popular network request library. They can work together to implement batch processing of front-end data. This article will introduce in detail how to efficiently use Vue and Axios for batch processing of data, and provide relevant code examples.
How to use vue3+ts+axios+pinia to achieve senseless refresh
May 25, 2023 pm 03:37 PM
vue3+ts+axios+pinia realizes senseless refresh 1. First download aiXos and pinianpmipinia in the project--savenpminstallaxios--save2. Encapsulate axios request-----Download js-cookienpmiJS-cookie-s//Introduce aixosimporttype{AxiosRequestConfig ,AxiosResponse}from"axios";importaxiosfrom'axios';import{ElMess
What is the parameter passing specification for Java axios and spring front-end and back-end separation?
May 03, 2023 pm 09:55 PM
1. The axios parameter transfer method corresponding to the @RequestParam annotation takes the following Springjava code as an example. The interface uses the POST protocol, and the parameters that need to be accepted are tsCode, indexCols, and table. For this Spring HTTP interface, how should axios pass parameters? How many methods are there? Let’s introduce them one by one. @PostMapping("/line")publicList
What should I do if 'Error: timeout of xxxms exceeded' occurs when using axios in a Vue application?
Jun 24, 2023 pm 03:27 PM
What should I do if "Error: timeoutofxxxmsexceeded" occurs when using axios in a Vue application? With the rapid development of the Internet, front-end technology is constantly updated and iterated. As an excellent front-end framework, Vue has been welcomed by everyone in recent years. In Vue applications, we often need to use axios to make network requests, but sometimes the error "Error: timeoutofxxxmsexceeded" occurs.
