Question

当我与Sequelize建立连接时：

var Sequelize = require('sequelize'),
 sequelize = new Sequelize('development', 'root', 'root', 
{     host: '127.0.0.1',   
   dialect: "mysql",
      port:    3001
 });

我收到以下错误：

无法连接到数据库：{SequelizeConnectionError：   连接丢失：服务器关闭了连接。在   Handshake._callback   （/home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/sequelize/lib/dialects/mysql/connection-manager.js:94:20）   在Handshake.Sequence.end   （/home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/mysql/lib/protocol/sequences/Sequence.js:85:24）   在   /home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/mysql/lib/protocol/Protocol.js:399:18   在Array.forEach（native）at   /home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/mysql/lib/protocol/Protocol.js:398:13   在_combinedTickCallback（内部/进程/ next_tick.js：67：7）at   process._tickCallback（internal / process / next_tick.js：98：9）名称：   ＆＃39; SequelizeConnectionError＆＃39;，消息：＆＃39;连接丢失：服务器   关闭连接。＆＃39;，父：{错误：连接丢失：   服务器关闭了连接。在Protocol.end   （/home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/mysql/lib/protocol/Protocol.js:109:13）   在Socket。   （/home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/mysql/lib/Connection.js:115:28）   在Socket.emit的emitNone（events.js：91：20）（events.js：185：7）   at endReadableNT（_stream_readable.js：973：12）at   _combinedTickCallback（internal / process / next_tick.js：74：11）at process._tickCallback（internal / process / next_tick.js：98：9）
  --------------------在Protocol._enqueue（/home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/mysql/lib/protocol/Protocol.js:141： 48）   在Protocol.handshake   （/home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/mysql/lib/protocol/Protocol.js:52:41）   在Connection.connect   （/home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/mysql/lib/Connection.js:136:18）   在   /home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/sequelize/lib/dialects/mysql/connection-manager.js:74:16   在Promise._execute   （/home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/bluebird/js/release/debuggability.js:284:9）   在Promise._resolveFromExecutor   （/home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/bluebird/js/release/promise.js:480:18）   在新的承诺   （/home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/bluebird/js/release/promise.js:77:14）   在ConnectionManager.connect   （/home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/sequelize/lib/dialects/mysql/connection-manager.js:55:10）   在。   （/home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/sequelize/lib/dialects/abstract/connection-manager.js:247:43）在tryCatcher上   （/home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/bluebird/js/release/util.js:16:23）   在Promise._settlePromiseFromHandler   （/home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/bluebird/js/release/promise.js:509:31）   在Promise._settlePromise   （/home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/bluebird/js/release/promise.js:566:18）   在Promise._settlePromise0   （/home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/bluebird/js/release/promise.js:611:10）   在Promise._settlePromises   （/home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/bluebird/js/release/promise.js:690:18）   在Async._drainQueue   （/home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/bluebird/js/release/async.js:138:16）   在Async._drainQueues   （/home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/bluebird/js/release/async.js:148:10）   致命：真实，代码：＆＃39; PROTOCOL_CONNECTION_LOST＆＃39; }，原版的： {   错误：连接丢失：服务器关闭了连接。在   Protocol.end   （/home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/mysql/lib/protocol/Protocol.js:109:13）   在Socket。   （/home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/mysql/lib/Connection.js:115:28）   在Socket.emit的emitNone（events.js：91：20）（events.js：185：7）   at endReadableNT（_stream_readable.js：973：12）at   _combinedTickCallback（internal / process / next_tick.js：74：11）at process._tickCallback（internal / process / next_tick.js：98：9）
  --------------------在Protocol._enqueue（/home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/mysql/lib/protocol/Protocol.js:141： 48）   在Protocol.handshake   （/home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/mysql/lib/protocol/Protocol.js:52:41）   在Connection.connect   （/home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/mysql/lib/Connection.js:136:18）   在   /home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/sequelize/lib/dialects/mysql/connection-manager.js:74:16   在Promise._execute   （/home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/bluebird/js/release/debuggability.js:284:9）   在Promise._resolveFromExecutor   （/home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/bluebird/js/release/promise.js:480:18）   在新的承诺   （/home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/bluebird/js/release/promise.js:77:14）   在ConnectionManager.connect   （/home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/sequelize/lib/dialects/mysql/connection-manager.js:55:10）   在。   （/home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/sequelize/lib/dialects/abstract/connection-manager.js:247:43）在tryCatcher上   （/home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/bluebird/js/release/util.js:16:23）   在Promise._settlePromiseFromHandler   （/home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/bluebird/js/release/promise.js:509:31）   在Promise._settlePromise   （/home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/bluebird/js/release/promise.js:566:18）   在Promise._settlePromise0   （/home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/bluebird/js/release/promise.js:611:10）   在Promise._settlePromises   （/home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/bluebird/js/release/promise.js:690:18）   在Async._drainQueue   （/home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/bluebird/js/release/async.js:138:16）   在Async._drainQueues   （/home/cbl61/WebstormProjects/register_mongo/sequelize/node_modules/bluebird/js/release/async.js:148:10）   致命：真实，代码：＆＃39; PROTOCOL_CONNECTION_LOST＆＃39; }}

Answer 1

确保在建立连接时需要mysql

var mysql = require('mysql');
var Sequelize = require('sequelize');

var sequelize = new Sequelize('development', 'root', 'root', {
  host: 'localhost',   //or 127.0.0.1
  dialect: 'mysql',
  port: 3001           //optional
});

sequelize.sync();

确保数据库的开发＆＃39;在场！

连接到sequelize

1 个答案: