Sequelize：在一个实例上连接到多个MSSQL数据库

Question

我有一个运行在本地计算机上的MSSQL服务器（全新安装），该服务器包含三个数据库：全局数据库，client0和client1。我想通过在node.js后端上使用Sequelize连接到数据库。

给出以下代码，当我仅尝试连接到一个数据库时，连接建立良好。一旦我尝试连接到多个数据库，就会因拒绝的诺言而引发异常，说（尽管已建立与第一个提供的数据库的连接）：

var BeforeEnd = books.timeTo.Subtract(Now).Subtract(TimeSpan.FromMinutes(15));
var BeforeBegin = books.timeFrom.Subtract(Now).Subtract(TimeSpan.FromMinutes(15));

if (books.timeFrom <= Now && books.timeTo > Now)
{
     ToRed();
     DispatcherTimer ColorTimer = new DispatcherTimer();
     ColorTimer.Interval = BeforeEnd;
     ColorTimer.Tick += (sender, args) =>
     {
         ToYellow();
         ColorTimer.Stop();
     };
     ColorTimer.Start();
 }
 else if (books.timeFrom > Now)
 {
     DispatcherTimer ColorTimer2 = new DispatcherTimer();
     ColorTimer2.Interval = BeforeBegin;
     ColorTimer2.Tick += (sender, args) =>
     {
          ToYellow();
          ColorTimer2.Stop();
     };
     ColorTimer2.Start();
 }
 else if (books.timeTo == Now)
 {
     ToGreen();
 }

config.js

{ SequelizeConnectionError
    at Connection.connection.on (...\server\node_modules\sequelize\lib\dialects\mssql\connection-manager.js:75:16)
    at Connection.emit (events.js:182:13)
    at Connection.cleanupConnection (...\server\node_modules\tedious\lib\connection.js:576:16)
    at Connection.enter (...\server\node_modules\tedious\lib\connection.js:1945:12)
    at Connection.transitionTo (...\server\node_modules\tedious\lib\connection.js:981:26)
    at Connection.socketError (...\server\node_modules\tedious\lib\connection.js:1675:14)
    at Connection.dispatchEvent (...\server\node_modules\tedious\lib\connection.js:992:38)
    at Connection.socketError (...\server\node_modules\tedious\lib\connection.js:1010:12)
    at Socket.emit (events.js:182:13)
    at emitErrorNT (internal/streams/destroy.js:82:8)
    at emitErrorAndCloseNT (internal/streams/destroy.js:50:3)
    at process._tickCallback (internal/process/next_tick.js:63:19)
  name: 'SequelizeConnectionError',
  parent: 'Connection was closed by remote server',
  original: 'Connection was closed by remote server' }

index.js

module.exports = {
  port: 8081,
  clients: [
    {
      db: {
        database: 'global',
        user: 'SA',
        password: 'Super123!',
        options: {
          host: 'localhost',
          port: 1434,
          dialect: 'mssql',
          operatorsAliases: false
        }
      },
      authentication: {
        jwtSecret: 'secret'
      }
    },
    {
      db: {
        database: 'client0',
        user: 'SA',
        password: 'Super123!',
        options: {
          host: 'localhost',
          port: 1434,
          dialect: 'mssql',
          operatorsAliases: false
        }
      }
    },
    {
      db: {
        database: 'client1',
        user: 'SA',
        password: 'Super123!',
        options: {
          host: 'localhost',
          port: 1434,
          dialect: 'mssql',
          operatorsAliases: false
        }
      }
    }
  ]
};

app.js

const fs = require('fs');
const path = require('path');
const Sequelize = require('sequelize');
const config = require('../config');

const dbConnections = [];

config.clients.forEach((client) => {
  const sequelize = new Sequelize(
    client.db.database,
    client.db.user,
    client.db.password,
    client.db.options
  );
  const dbConnection = {};
  fs
    .readdirSync(__dirname)
    .filter(file => file !== 'index.js')
    .forEach((file) => {
      const model = sequelize.import(path.join(__dirname, file));
      dbConnection[model.name] = model;
    });

  dbConnection.sequelize = sequelize;
  dbConnection.Sequelize = Sequelize;
  dbConnections.push({ ...dbConnection });
});

module.exports = dbConnections;

我将不胜感激任何建议和/或帮助。