webpack配置：
...
const ExtractTextPlugin = require('extract-text-webpack-plugin')

module.exports = {
...
output: {
path: path.join(__dirname, './dist'),
filename: 'js/[name].js',
publicPath: '/dist/'
},
module: {
loaders: [
...
{
test: /\.css$/,
loader: ExtractTextPlugin.extract({
fallbackLoader: 'style',
loader: 'css',
publicPath: '../'
})
},
]
},
plugins: [
...
new ExtractTextPlugin({
filename: 'css/[name].css',
disable: false,

allChunks: false
})
]
}