在webpack.dev.conf.js中添加：disableHostCheck: true
devServer: {
public: 'local.kingsum.biz',
clientLogLevel: 'warning',
historyApiFallback: true,
hot: true,
compress: true,
host: HOST || config.dev.host,
port: PORT || config.dev.port,
open: config.dev.autoOpenBrowser,
overlay: config.dev.errorOverlay
? { warnings: false, errors: true }
: false,
publicPath: config.dev.assetsPublicPath,
proxy: config.dev.proxyTable,
quiet: true, // necessary for FriendlyErrorsPlugin
watchOptions: {
poll: config.dev.poll,
},
disableHostCheck: true 加上这段
}