Nodejs使用winston进行日志记录详解

npm init

{
  "name": "winston",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "type": "module",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC"
}

import winston from "winston";
const { format, transports } = winston;
const logger = winston.createLogger({
  level: "debug",
  format: format.simple(),
  transports: [new transports.Console()],
});

logger.info("cxkhtw");

const levels = {
  error: 0,
  warn: 1,
  info: 2,
  http: 3,
  verbose: 4,
  debug: 5,
  silly: 6,
};

logger.info("cxkhtw");
logger.debug("cxkhtw");
logger.warn("cxkhtw");
logger.silly("cxkhtw");

const logger = winston.createLogger({
  level: "debug",
  transports: [new transports.Console()],
});

format: format.combine(format.timestamp(), format.simple()),

const logger = winston.createLogger({
  level: "debug",
  format: format.simple(),
  transports: [
    new transports.Console(),
    new transports.File({
      dirname: "logs",
      filename: "index.log",
    }),
  ],
});

const logger = winston.createLogger({
  level: "debug",
  format: format.simple(),
  transports: [
    new transports.Console(),
    new transports.File({
      dirname: "logs",
      filename: "index.log",
      maxsize: 1024,
    }),
  ],
});

import winston from "winston";
import "winston-daily-rotate-file";
const { format, transports } = winston;
const logger = winston.createLogger({
  level: "debug",
  format: format.simple(),
  transports: [
    new transports.Console(),
    new transports.DailyRotateFile({
      level: "debug",
      dirname: "logs",
      filename: "index-%DATE%.log",
      datePattern: "YYYY-MM-DD-HH-mm",
      maxSize: 1024,
    }),
  ],
});

logger.info("cxkhtw");
logger.debug("cxkhtw");
logger.warn("cxkhtw");
logger.info("cxkhtw");

import express from "express";
import bodyParser from "body-parser";
const app = express();
const port = 3000;
app.use(bodyParser.json());
// 定义一个 POST请求的路由
app.post("/", (req, res) => {
  console.log(req.body);
  res.send("Hello, World!");
});

// 启动服务器
app.listen(port, () => {
  console.log(`Server is running on port ${port}`);
});

import winston from "winston";
import "winston-daily-rotate-file";
const { format, transports } = winston;
const logger = winston.createLogger({
  level: "debug",
  format: format.simple(),
  transports: [
    new transports.Console(),
    new transports.Http({
      level: "info",
      host: "localhost",
      port: 3000,
      path: "/",
    }),
  ],
});

logger.info("cxkhtw");
logger.debug("cxkhtw");
logger.warn("cxkhtw");
logger.info("cxkhtw");

import winston from "winston";
import "winston-daily-rotate-file";
const { format, transports } = winston;
const logger = winston.createLogger({
  level: "debug",
  format: format.simple(),
  transports: [new transports.Console()],
  exceptionHandlers: [
    new transports.File({
      dirname: "errorlogs",
      filename: "error.log",
    }),
  ],
});
throw Error("这是一条错误信息");