webpack-dev-server 控制台显示404

Question

如图所示，输入npm run server后，打开控制台显示 Failed to load resource: the server responded with a status of 404 (Not Found)，是自己写的程序有错误吗？实在不知道是什么原因。求大神解答。

webpack.config.js的代码如下：

const webpack = require('webpack');
module.exports = {
    entry:  __dirname + "/src/main.js",

    devtool: 'eval-source-map',

    devServer: {
        contentBase: "./dist",//本地服务器所加载的页面所在的目录
        historyApiFallback: true,//不跳转
        inline: true//实时刷新
    },

    plugins: [
        new webpack.HotModuleReplacementPlugin()
    ],

    output: {
        path: __dirname + "/dist/js",
        filename: "bundle.js"
    },
};

Answer 1

看看你的package.json中有没有配置Server启动的命令