在升級了express 4 后執(zhí)行express.logger('dev')服務(wù)器報錯

Error: Most middleware (like logger) is no longer bundled with Express and must be installed separately.

解決方法

1.降級express到 3
"express": "~3.0.0"

2.添加需要的模塊
"morgan": "~1.0.0"

var logger = require('morgan');
app.use(logger('dev'));