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我試圖使用bluebird的promisify與node-mysql包。節點版本是4.2.4未處理的拒絕TypeError試圖promisify節點mysql連接和查詢
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);
});
我得到的錯誤
[TypeError: Cannot read property 'socketPath' of undefined]
堆棧跟蹤:
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
爲什麼我收到此錯誤和/或我怎麼能調試它進一步?我試圖遠程調試它,但我不確定當我在原型鏈上進行幾個步驟時所看到的是什麼。 Async
功能似乎附加到MysqlClient
對象。
遙遠而明亮的調試顯示,在節點MySQL的Connection.js文件中的以下部分被投擲的錯誤:
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
是不是你需要使用節點MySQL時定義的東西直接
向我們展示周圍的代碼(什麼是'this.config')? –
@BenjaminGruenbaum。感謝您的回覆。配置代碼在這裏,如果你有興趣https://github.com/felixge/node-mysql/blob/master/lib/ConnectionConfig.js,但我放棄了這個問題,根據我的答案 – codecowboy