VUE axios使用方法与跨域问题解决

'http://localhost:8080' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource.

前后端数据交互本地代理跨域问题，在本地localhost访问接口是要跨域的，浏览器的安全策略报错，需要在webpack配置proxyTable
config/index.js

module.exports = { dev: { // Paths assetsSubDirectory: 'static', assetsPublicPath: '/', proxyTable: { '/api': { target: 'http://www.centby.com',//设置你调用的接口域名和端口号 别忘了加http changeOrigin: true,//如果需要跨域 pathRewrite: { '^/api': 'http://www.centby.com',//调用接口直接写‘/api/user/add’即可 } } }, // Various Dev Server settings host: 'localhost', // can be overwritten by process.env.HOST port: 8080, // can be overwritten by process.env.PORT, if port is in use, a free one will be determined autoOpenBrowser: false, errorOverlay: true, notifyOnErrors: true, poll: false, // https://webpack.js.org/configuration/dev-server/#devserver-watchoptions- /** * Source Maps */ // https://webpack.js.org/configuration/devtool/#development devtool: 'cheap-module-eval-source-map', // If you have problems debugging vue-files in devtools, // set this to false - it *may* help // https://vue-loader.vuejs.org/en/options.html#cachebusting cacheBusting: true, cssSourceMap: true }, build: { // Template for index.html index: path.resolve(__dirname, '../dist/index.html'), // Paths assetsRoot: path.resolve(__dirname, '../dist'), assetsSubDirectory: 'static', assetsPublicPath: '/', /** * Source Maps */ productionSourceMap: true, // https://webpack.js.org/configuration/devtool/#production devtool: '#source-map', // Gzip off by default as many popular static hosts such as // Surge or Netlify already gzip all static assets for you. // Before setting to `true`, make sure to: // npm install --save-dev compression-webpack-plugin productionGzip: false, productionGzipExtensions: ['js', 'css'], // Run the build command with an extra argument to // View the bundle analyzer report after build finishes: // `npm run build --report` // Set to `true` or `false` to always turn it on or off bundleAnalyzerReport: process.env.npm_config_report } }

使用方法示例：/api/v1/article/list/ = http://www.centby.com/v1/article/list/

 mounted(){ //接口域名和端口用 api 代替 this.articles() }, methods: { articles (){ let me = this; this.axios.post('/api/v1/article/list/', { token: '$13$iy6I3ab', page:1, pagesize:10, type:1 }).then(function (res) { console.log(res); if(res.data.status == 1){ console.log(res.data.data.data); //渲染页面 me.list = res.data.data.data; } }).catch(function (error) { console.log(error); }); } },

axios安装

npm install --save axios vue-axios

main.js

import Vue from 'vue' import App from './App' import router from './router' import axios from 'axios' import VueAxios from 'vue-axios' Vue.use(VueAxios, axios)

用法

Vue.axios.get(api).then((response) => { console.log(response.data) }) this.axios.get(api).then((response) => { console.log(response.data) }) this.$http.get(api).then((response) => { console.log(response.data) })