33 lines
1.0 KiB
JavaScript
33 lines
1.0 KiB
JavaScript
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const { createLogger, format, transports } = require('winston');
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const path = require('path');
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// 定义日志格式：时间戳 + 日志级别 + 消息
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const logFormat = format.combine(
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format.timestamp({ format: 'YYYY-MM-DD HH:mm:ss' }),
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format.printf(info => {
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// 把额外的参数取出来
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const splat = info[Symbol.for('splat')] || [];
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const msg = [info.message, ...splat].map(v =>
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typeof v === 'object' ? util.inspect(v, { depth: null }) : v
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).join(' ');
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return `[${info.timestamp}] ${msg}`;
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})
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);
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// 创建 logger
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const logger = createLogger({
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level: 'info', // 默认日志等级
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format: logFormat,
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transports: [
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new transports.File({
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filename: path.join(__dirname, 'log/app.log'), // 日志文件名
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maxsize: 5 * 1024 * 1024, // 每个文件最大 5MB
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maxFiles: 99, // 最多保留 5 个旧日志文件
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tailable: true // 让文件轮转时顺序保持最新在最后
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}),
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new transports.Console() // 同时输出到控制台（可选）
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]
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});
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module.exports = logger;
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