假設是使用nodejs+express3這個經典的組合。那麽有一種非常方面的處理回調函數異常的方法：

1. 安裝模塊：express-domain-middleware

2. 增加例如以下的代碼：

app.use(require(‘express-domain-middleware‘));
app.use(function errorHandler(err, req, res, next) {
  logger.error(‘error on request %d %s %s: %j‘, process.domain.id, req.method, req.url, err);
  res.send(500, "there is an error in callback function");
  if(err.domain) {
    //you should think about gracefully stopping & respawning your server
    //since an unhandled error might put your application into an unknown state
  }
});
app.use(express.errorHandler({ dumpExceptions: true, showStack: true }));

nodejs中處理回調函數的異常