我正在尝试为应用程序设置一些记录器。我有一个 console 处理程序，它将每个日志写入控制台。还有一个 app 处理程序，它应该将任何日志写入某个文件。

日志已正确写入控制台，但没有写入任何文件，我不明白为什么。

import { setup as loggerSetup, getLogger } from "https://deno.land/std/log/mod.ts";
import {
  ConsoleHandler,
  FileHandler,
} from "https://deno.land/std/log/handlers.ts";
import { ensureDir } from "https://deno.land/std/fs/ensure_dir.ts";

const logDir = Deno.env.get("LOG_DIR") || "./logs";

await ensureDir(logDir);

const consoleLoggerHandler = new ConsoleHandler("DEBUG");
const applicationLoggerHandler = new FileHandler("DEBUG", {
  filename: logDir + "/application.log",
  formatter: "{msg}",
});
const errorLoggerHandler = new FileHandler("WARNING", {
  filename: logDir + "/errors.log",
});

await loggerSetup({
  handlers: {
    console: consoleLoggerHandler,
    app: applicationLoggerHandler,
    errors: errorLoggerHandler,
  },
  loggers: {
    default: {
      level: "DEBUG",
      handlers: ["console", "app"],
    },
    app: {
      level: "INFO",
      handlers: ["app"],
    },
    error: {
      level: "WARNING",
      handlers: ["errors"],
    },
  },
});

export const logger = getLogger();
export const appLogger = getLogger("app");
export const errorLogger = getLogger("error");

最佳答案

您必须调用 applicationLoggerHandler.flush() 方法才能写入文件。

https://stackoverflow.com/questions/63838071/