【node】log4js日志

官方文档

https://log4js-node.github.io/log4js-node/

常用配置代码

更多详细参数查看官方文档

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import path from "node:path";
import log4js from "log4js";

log4js.configure({
  appenders: {
    // 标准输出流
    out: { type: "stdout" },
    // 日期文件输出
    dateFile: {
      type: "dateFile",
      filename: path.resolve(import.meta.dirname, "../", "logs", "dateFile", "log"),
      pattern: "yyyy-MM-dd_hh-mm-ss.log",
      alwaysIncludePattern: true,
      fileNameSep: '.',
      encoding: "utf-8",
      maxLogSize: "10M",
      numBackups: 3,
      mode: 0o666,
      layout: {
        type: "basic",
      },
    },
    // 文件输出
    file: {
      type: "file",
      filename: path.resolve(import.meta.dirname, "../", "logs", "file", "log.log"),
      maxLogSize: "10M",
      backups: 5,
      fileNameSep: ".",
      encoding: "utf-8",
      mode: 0o666,
      keepFileExt: true,
      layout: {
        type: "basic",
      },
    },
    // 文件输出（同步）
    fileSync: {
      type: "fileSync",
      filename: path.resolve(import.meta.dirname, "../", "logs", "fileSync", "log.log"),
      maxLogSize: "10M",
      backups: 5,
      encoding: "utf-8",
      mode: 0o666,
      layout: {
        type: "basic",
      },
    },
  },
  categories: {
    default: { appenders: ["out"], level: "all" },
    dateFile: { appenders: ["dateFile"], level: "all" },
    file: { appenders: ["file"], level: "all" },
    fileSync: { appenders: ["fileSync"], level: "all" },
  },
});

export const logger = log4js.getLogger("default");
export const loggerDateFile = log4js.getLogger("dateFile");
export const loggerFile = log4js.getLogger("file");
export const loggerFileSync = log4js.getLogger("fileSync");