如何配置Linux Node.js日志输出

const fs = require('fs');
const path = require('path');

// 创建一个日志文件
const logFile = path.join(__dirname, 'app.log');

// 创建一个可写流
const logStream = fs.createWriteStream(logFile, { flags: 'a' });

// 自定义日志输出函数
function log(message) {
  const timestamp = new Date().toISOString();
  logStream.write(`<span>${timestamp} - ${message}\n`</span>);
}

// 使用自定义日志输出函数
log('Hello, world!');

npm install winston

const winston = require('winston');

const logger = winston.createLogger({
  level: 'info',
  format: winston.format.combine(
    winston.format.timestamp(),
    winston.format.printf((<span>{ timestamp, level, message }) =></span> {
      return `<span>${timestamp} ${level.toUpperCase()}: ${message}`</span>;
    })
  ),
  transports: [
    new winston.transports.File({ filename: 'app.log' }),
    new winston.transports.Console()
  ]
});

// 使用 logger
logger.info('Hello, world!');

npm install winston-daily-rotate-file

const winston = require('winston');
const DailyRotateFile = require('winston-daily-rotate-file');

const transport = new DailyRotateFile({
  filename: 'application-%DATE%.log',
  datePattern: 'YYYY-MM-DD-HH',
  zippedArchive: true,
  maxSize: '20m',
  maxFiles: '14d'
});

const logger = winston.createLogger({
  level: 'info',
  format: winston.format.combine(
    winston.format.timestamp(),
    winston.format.printf((<span>{ timestamp, level, message }) =></span> {
      return `<span>${timestamp} ${level.toUpperCase()}: ${message}`</span>;
    })
  ),
  transports: [
    transport,
    new winston.transports.Console()
  ]
});

// 使用 logger
logger.info('Hello, world!');

npm install pino

const pino = require('pino');
const prettyPrint = require('pino-pretty');

const logger = pino({
  level: 'info',
  transport: {
    target: 'pino-pretty',
    options: {
      colorize: true,
      translateTime: 'SYS:standard'
    }
  }
});

// 使用 logger
logger.info('Hello, world!');