Error: Cannot find module 'mysql'
at Function.Module._resolveFilename (module.js:547:15)
at Function.Module._load (module.js:474:25)
at Module.require (module.js:596:17)
at require (internal/module.js:11:18)
at Object. (E:\WebstromProject\vue2.0-vuex2.0-demo-jianshu-master\dbUtil\dbConnection.js:5:13)
at Module._compile (module.js:652:30)
at Object.Module._extensions..js (module.js:663:10)
at Module.load (module.js:565:32)
at tryModuleLoad (module.js:505:12)
at Function.Module._load (module.js:497:3)
at Module.require (module.js:596:17)
at require (internal/module.js:11:18)
at Object. (E:\WebstromProject\vue2.0-vuex2.0-demo-jianshu-master\dbUtil\userDbUtil.js:5:18)
at Module._compile (module.js:652:30)
at Object.Module._extensions..js (module.js:663:10)
at Module.load (module.js:565:32)

mysql 模块安装成功后，即可运行：

E:\WebstromProject\vue2.0-vuex2.0-demo-jianshu-master>npm run dev

[email protected] dev E:\WebstromProject\vue2.0-vuex2.0-demo-jianshu-master
node build/dev-server.js

body-parser deprecated bodyParser: use individual json/urlencoded middlewares build\dev-server.js:21:9
body-parser deprecated undefined extended: provide extended option node_modules\body-parser\index.js:105:29
express-session deprecated undefined resave option; provide resave option build\dev-server.js:27:9
express-session deprecated undefined saveUninitialized option; provide saveUninitialized option build\dev-server.js:27:9
Listening at http://localhost:8083

webpack: wait until bundle finished: /index.html
webpack built 3ffa28d23b0f96cb75f1 in 6917ms
Hash: 3ffa28d23b0f96cb75f1
Version: webpack 1.15.0
Time: 6917ms
Asset Size Chunks Chunk Names
static/img/jianshu_logo.1c609f8.jpg 27.4 kB [emitted]
static/img/download_img2.7a21a2a.png 458 kB [emitted]
static/img/hot-special.58f8968.png 15.7 kB [emitted]
app.js 3.41 MB 0 [emitted] app
index.html 393 bytes [emitted]
Child html-webpack-plugin for "index.html":
Asset Size Chunks Chunk Names
index.html 1.47 MB 0
webpack: Compiled successfully.