1、npm install url-loader file-loader --save-dev
2、webpack.config.js配置：
module: {
loaders:[
{
test: /.css$/,
loader: ExtractTextPlugin.extract("style-loader","css-loader")
},
{
test: /.(png|jpg|gif|woff|svg|eot|ttf)??.*$/,
loader: 'url-loader?limit=100&name=resource/image/[name].[ext]'
}
]
},