捕获Node js应用程序的所有uncaughtException [英] Catch all uncaughtException for Node js app

问题描述

我有一个问题:如何为我的节点应用程序处理所有未捕获的异常(操作/开发人员错误将导致所有服务中断).然后，只要发现错误，我都可以向我发送电子邮件警报.

I have a question: how do I can handle all uncaught Exception (operations/developer error will take all service down) for my node app. Then I can send an email alert to me whenever catch an error.

推荐答案

您可以使用流程'uncaughtException'和'unhandledRejection'事件.

You can use process 'uncaughtException' and 'unhandledRejection' events.

还请记住，在uncaughtException之后恢复不安全是正常操作，因为系统已损坏:

Also remember that it is not safe to resume normal operation after 'uncaughtException', because the system becomes corrupted:

正确使用"uncaughtException"是为了执行同步 清理分配的资源(例如文件描述符，句柄等) 在关闭该过程之前.

The correct use of 'uncaughtException' is to perform synchronous cleanup of allocated resources (e.g. file descriptors, handles, etc) before shutting down the process.

示例:

process
  .on('unhandledRejection', (reason, p) => {
    console.error(reason, 'Unhandled Rejection at Promise', p);
  })
  .on('uncaughtException', err => {
    console.error(err, 'Uncaught Exception thrown');
    process.exit(1);
  });

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