无论我做啥，都会在 Node.js 中不断收到“ConfigError：Missing region in config”错误

Posted 2023-03-07

【中文标题】无论我做啥，都会在 Node.js 中不断收到“ConfigError：Missing region in config”错误

【英文标题】：Keep getting the "ConfigError: Missing region in config" error in Node.js no matter what I do无论我做什么，都会在 Node.js 中不断收到“ConfigError：Missing region in config”错误

【发布时间】：2019-09-06 16:19:45

【问题描述】：

尝试向我在 Node.js 中设置的 API 发出请求时，我不断收到“UnhandledPromiseRejectionWarning: ConfigError: Missing region in config”。

我是 DynamoDB 的新手，在设置了大部分样板代码后，我正在使用 Postman 来测试我的路线。但是，每次发出发布请求时，我都会收到相同的错误。我已经检查了现有线程上的一些解决方案，即：Configuring region in Node.js AWS SDK 但无法使其正常工作。

我目前正在本地开发应用程序并检查了添加项目的数据库。

我的设置如下：

// user_controller.js

const uuid = require('uuid');
const sanitizer = require('validator');
const bcrypt = require('bcryptjs-then');
const AWS = require('aws-sdk');
const config = require('../config/config');
const  signToken, userByEmail, userById  = require('../Helpers/Users');
const isDev = true

然后在我的代码块中，我有以下内容：

// user_controller.js
(...)

if (isDev) 
      AWS.config.update(config.aws_local_config);
     else 
      AWS.config.update(config.aws_remote_config);
    

    const DB = new AWS.DynamoDB.DocumentClient(); 


    const params = 
      TableName: config.aws_table_name,
      Item: 
        userId: await uuid.v1(),
        firstName: sanitizer.trim(firstName),
        lastName: sanitizer.trim(lastName),
        email: sanitizer.normalizeEmail(sanitizer.trim(email)),
        password: await bcrypt.hash(password, 8),
        level: 'standard',
        createdAt: new Date().getTime(),
        updatedAt: new Date().getTime(),
      ,
    

 return userByEmail(params.Item.email) // Does the email already exist?
      .then(user =>  if (user) throw new Error('User with that email exists') )
      .then(() => DB.put(params).promise()) // Add the data to the DB
      .then(() => userById(params.Item.id)) // Get user data from DB
      .then(user => (err, data) => 
        console.log("AFTER USER CREATED")
        if (err) 
          res.send(
            success: false,
            message: 'Error: Server error'
          );
         else 
          console.log('data', data);
          res.send(
            statusCode: 201,
            message: 'Success - you are now registered',
            data:  token: signToken(params.Item.id), ...user ,
          );
        
      ) 


(...)

最后我从单独的文件中导入配置：

// config.js

module.exports = 
  aws_table_name: 'usersTable',
  aws_local_config: 
    region: 'local',
    endpoint: 'http://localhost:8000'
  ,
  aws_remote_config: 

已经配置了aws-sdk：

AWS Access Key ID [****************foo]: 
AWS Secret Access Key [****************bar]: 
Default region name [local]: 
Default output format [json]: 

这是我不断得到的输出：

(node:4568) UnhandledPromiseRejectionWarning: ConfigError: Missing region in config
    at Request.VALIDATE_REGION (/Users/BANGBIZ/Programming/techstars/capexmove/SmartLegalContract/node_modules/aws-sdk/lib/event_listeners.js:92:45)
    at Request.callListeners (/Users/BANGBIZ/Programming/techstars/capexmove/SmartLegalContract/node_modules/aws-sdk/lib/sequential_executor.js:106:20)
    at callNextListener (/Users/BANGBIZ/Programming/techstars/capexmove/SmartLegalContract/node_modules/aws-sdk/lib/sequential_executor.js:96:12)
    at /Users/BANGBIZ/Programming/techstars/capexmove/SmartLegalContract/node_modules/aws-sdk/lib/event_listeners.js:86:9
    at finish (/Users/BANGBIZ/Programming/techstars/capexmove/SmartLegalContract/node_modules/aws-sdk/lib/config.js:350:7)
    at /Users/BANGBIZ/Programming/techstars/capexmove/SmartLegalContract/node_modules/aws-sdk/lib/config.js:368:9
    at SharedIniFileCredentials.get (/Users/BANGBIZ/Programming/techstars/capexmove/SmartLegalContract/node_modules/aws-sdk/lib/credentials.js:127:7)
    at getAsyncCredentials (/Users/BANGBIZ/Programming/techstars/capexmove/SmartLegalContract/node_modules/aws-sdk/lib/config.js:362:24)
    at Config.getCredentials (/Users/BANGBIZ/Programming/techstars/capexmove/SmartLegalContract/node_modules/aws-sdk/lib/config.js:382:9)
    at Request.VALIDATE_CREDENTIALS (/Users/BANGBIZ/Programming/techstars/capexmove/SmartLegalContract/node_modules/aws-sdk/lib/event_listeners.js:81:26)
(node:4568) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 4)
(node:4568) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

就像我说的，我在这方面尝试了很多变体，但都无济于事。希望得到一些帮助，谢谢。

【问题讨论】：

另见：Dynamo Error "ConfigError: Missing region in config" when developing Alexa skill locally

【参考方案1】：

我不知道这是否有帮助，但我在该地区使用 none 而不是 local，它似乎对我有用

AWS.config.update( region: 'none' )