安装log4js：npminstalllog4jsexpress中配置log4js中间件：varlog=require("./modules/utils/logUtil.js");log.use(app);logUtil工具类：/***CreatedbyAdministratoron2015/9/8.*/"usestr...

1：先安装log4js模块 　　npminstalllog4js    目前安装的版本信息："log4js":"^3.0.5"2：引用及配置varlog4js=require('log4js');//log4js的输出级别6个:trace,debug,info,warn...