尝试承诺 node-mysql 连接和查询时出现未处理的拒绝 TypeError

Question

我正在尝试将 bluebird 的 promisify 与 node-mysql 包一起使用。节点版本为 4.2.4

var Promise = require('bluebird');
var mysqlClient = Promise.promisifyAll(require("mysql/lib/Connection").prototype);
Promise.promisifyAll(require("mysql/lib/Pool").prototype);

var connectionOptions = ({
    host: 'localhost',
    user: 'root',
    password: '',
    database: 'my_db'

});

var firstPost = "some sql here";

var results = [];
mysqlClient.connectAsync(connectionOptions).then(function(connection){
    connection.query(firstPost, function(){
        console.log('i reached line 26 of a node script. a minor miracle')

    });
}).catch(function(err) {
  console.log(err);
});

我收到错误

[TypeError: Cannot read property 'socketPath' of undefined]

堆栈跟踪：

Unhandled rejection TypeError: Cannot read property 'socketPath' of undefined
    at Connection.connect (/vagrant/spam_smasher/node_modules/mysql/lib/Connection.js:87:32)
    at Connection.tryCatcher (/vagrant/spam_smasher/node_modules/bluebird/js/release/util.js:11:23)
    at Connection.ret [as connectAsync] (eval at <anonymous> (/vagrant/spam_smasher/node_modules/bluebird/js/release/promisify.js:184:12), <anonymous>:13:39)
    at Object.<anonymous> (/vagrant/spam_smasher/bluebird.js:24:13)
    at Module._compile (module.js:435:26)
    at Object.Module._extensions..js (module.js:442:10)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:313:12)
    at Function.Module.runMain (module.js:467:10)
    at startup (node.js:136:18)
    at node.js:963:3

为什么我会收到此错误and/or 我该如何进一步调试它？我尝试远程调试它，但不确定当我沿着原型链向下几步时我在看什么。 Async 函数似乎附加到 MysqlClient 对象。

进一步调试显示节点-mysql 的 Connection.js 文件中的以下部分抛出错误：

 if (!this._connectCalled) {
    this._connectCalled = true;

    // Connect either via a UNIX domain socket or a TCP socket.
    this._socket = (this.config.socketPath)
      ? Net.createConnection(this.config.socketPath)
      : Net.createConnection(this.config.port, this.config.host);

socketpath不是直接使用node-mysql需要定义的东西

Answer 1

Bluebird 文档似乎已过时。他们想念您还需要 ConnectionConfig 可用，因此我的代码中缺少它，导致错误。

为了保持理智，我选择放弃这个问题。还有进一步讨论here and you may also want to check out mysql-promise

尝试承诺 node-mysql 连接和查询时出现未处理的拒绝 TypeError

Unhandled rejection TypeError when trying to promisify a node-mysql connection and query

node.js

promise

bluebird