Question

假设我有一个快递服务器，它需要连接（发送数据）多个快递服务器。像这样：

app.post('/events', async (req, res) => {
  const event = req.body;
  events.push(event)

  try {
    console.log(`event received ${event.type}`)
    await axios.post('http://localhost:4000/events', event);
    console.log('event sent to 4000')
    await axios.post('http://localhost:4001/events', event);
    console.log('event sent to 4001')
    await axios.post('http://localhost:4002/events', event); //<-- server stopped hence go catch block
    console.log('event sent to 4002')
    await axios.post('http://localhost:4003/events', event); //<-- never come here
    console.log('event sent to 4003')
  } catch (e) {
    console.log(e);
  }

  res.send({ status: 'OK' });
});

由于某种原因，快递服务器之一已停止。让在端口4002上运行的服务器已停止，但是我无法将数据发布到在4003上运行端口的服务器上。有什么方法可以处理由catch块捕获的ECONNREFUSED错误，以及将数据发送到4003上的服务器运行端口吗？

Answer 1

按照@ jfriend00的建议，您可以使用Promise.allSettled()，

const promise1 = axios.post('http://localhost:4000/events', event)
  const promise2 = axios.post('http://localhost:4001/events', event)
  const promise3 = axios.post('http://localhost:4002/events', event)
  const promise4 = axios.post('http://localhost:4003/events', event)
  const promises = [promise1, promise2, promise3, promise4];

  Promise.allSettled(promises).
    then((results) => results.forEach((result) => console.log(result.status)));

代替try/catch。

当其中一些失败时，如何成功处理多个axios请求

1 个答案: