vue : 本地调试跨域问题的解决办法：proxyTable

本来我是不想写的，但为了加深印象还是写一写吧。

./config/index.js

module.exports = {
  dev: {

    // Paths
    assetsSubDirectory: 'static',
    assetsPublicPath: '/',
    proxyTable: {
        '/api': {  //使用"/api"来代替"http://charon-satellite.com" 
            target: 'http://xxx.charon-satellite.com', //源地址 
            secure: false,  // 如果是https接口，需要配置这个参数
            changeOrigin: true, //改变源 
            pathRewrite: { 
              '^/api': '' //路径重写 
            } 
        } 
    },

    // 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
  }
}

./api.js (管理接口的JS文件)

...
// export const base = 'http://xxx.charon-satellite.com'; // 线上
export const base = '/api';  // 本地
export const qs = require('qs')

// public
export const login = base + '/xxx/xxx/dologin'; // 登录
...

原理：简单的说就是利用了vue所用的node.js服务器环境，建立代理服务器，使本地的域名与线上域名相同。