log4js 的安装设置和实例

1、 安装

yarn add log4js -D

2、设置

const log4js = require('log4js')

3、实例

var log = log4js.getLogger();

// logger

app.use(async (ctx, next) => {

  // const start = new Date()

  await next()

  // const ms = new Date() - start

  // console.log(`${ctx.method} ${ctx.url} - ${ms}ms`)

  log.level = "debug";

  log.debug("Some debug messages");

})