Node.js无服务器脱机在第一次请求后挂起

Node.js无服务器脱机在第一次请求后挂起,node.js,express,serverless-framework-offline,serverless-plugins,Node.js,Express,Serverless Framework Offline,Serverless Plugins,当我第一次发出请求时,它工作正常,但是当我再次发出请求而不重新启动服务器时,它将超时并返回一些承诺错误 following is the code and error module.exports.getOne = (event, context, callback) => { context.callbackWaitsForEmptyEventLoop = false; db.once('open', () => { Client.findOne({name

当我第一次发出请求时,它工作正常,但是当我再次发出请求而不重新启动服务器时,它将超时并返回一些承诺错误

following is the code and error

module.exports.getOne = (event, context, callback) => {
  context.callbackWaitsForEmptyEventLoop = false;

  db.once('open', () => {
      Client.findOne({name:{ $regex : new RegExp(event.pathParameters.name, "i") }})
        .then(client => callback(null, {
          statusCode: 200,
          body: JSON.stringify(client)
        }))
        .catch(err => callback(null, {
          statusCode: err.statusCode || 500,
          headers: { 'Content-Type': 'text/plain' },
          body: 'Could not fetch the note.'
        }))
        .finally(() => {
          // Close db connection or node event loop won't exit , and lambda will timeout
          db.close();
        });
    });
};

Error:

(node:3273) UnhandledPromiseRejectionWarning: Error: Cannot stop server while in stopping state

问题是您没有通过调用
callback
来完成调用,因此它认为您的getOne()函数没有完成

查看serverless在使用其模板设置新的serverless应用程序时提供的示例代码

module.exports.hello = (event, context, callback) => {
  const response = {
    statusCode: 200,
    body: JSON.stringify({
      message: 'Go Serverless v1.0! Your function executed successfully!',
      input: event,
    }),
  };

  callback(null, response);
};