我試過Joel解決方案，但得到一些錯誤。有人可以告訴我問題在哪裏。HTML5頁面連接mysql數據庫與node.js

app.js

var app = require('http').createServer(handler) 
, io = require('socket.io').listen(app) 
, fs = require('fs') 
, mysql = require('mysql') 

var client = mysql.createConnection({ 
    host: 'localhost', 
    user: 'root', 
    password: '', 
}); 

client.connect(); 

app.listen(3232); 

function handler (req, res) { 
    fs.readFile(__dirname + '/index.html', 
    function (err, data) { 
     if (err) { 
      res.writeHead(500); 
      return res.end('Error loading index.html'); 
     } 

     res.writeHead(200); 
     res.end(data); 
    }); 
} 

io.sockets.on('connection', function (socket) { 
    socket.on('login', function(usr, pass){ 
     var TEST_DATABASE = 'mysqltest'; 
     var TEST_TABLE = 'users'; 

     client.query('USE '+TEST_DATABASE); 

     client.query('SELECT name FROM '+TEST_TABLE+' WHERE user = "'+usr+'" AND password = "'+pass+'"', function(err, results) { 
      if (err) throw err; 
      console.log(results[0]); // [{1: 1}] 
      socket.emit('retuLogIn',results[0]['name']); 
     }); 

    }); 
    socket.on('disconnect', function(){ 
     console.log('Server has disconnected'); 
    }); 
});

的index.html

<html> 
    <title>WebSocket Client Demo [socket.io]</title> 
    <script src="http://localhost:3232/socket.io/socket.io.js"></script> 
    <script> 
    function connect() { 

     try 
     { 
      var socket = io.connect('http://localhost:3232/'); 
      socket.on("connect",function(){ 
       document.getElementById('status').innerHTML ="Browser has connected to the app server"; 
       socket.emit('login', document.getElementById('txtUser').value, 
       document.getElementById('txtPass').value); 

      }); 
      socket.on('retuLogIn', function (data) { 
       document.getElementById('status').innerHTML = 'Welcome '+data; 
      }); 
     } 
     catch(err) 
     { 
      document.getElementById('status').innerHTML = err.message; 
     } 
    } 
    </script> 
    <body> 
     <h1>WebSocket Client Demo</h1> 
     <div><p id="status">Enter user and password to Log-In</p></div> 
     <label>User :</label> 
     <input id="txtUser" type="text" maxlength="10" /> 
     <label>Password :</label> 
     <input id="txtPass" type="text" maxlength="10" /> 
     <button id="connect" onClick='connect()'/>Log-In</button> 
    </body> 
</html>

當我嘗試運行app.js文件中的Node.js它將給我以下錯誤：

C:\Program Files (x86)\nodejs>node "C:\Program Files (x86)\nodejs\app.js" info - socket.io started 

C:\Program Files (x86)\nodejs\app.js:6 var client = mysql.createConnection({^TypeError: Object # has no method 'createConnection' at Object. (C:\Program Files (x86)\nodejs\app.js:6:24) at Module._compile (module.js:449:26) at Object..js (module.js:467:10) at Module.load (module.js:356:32) at Function._load (module.js:312:12) at module.js:487:10 at EventEmitter._tickCallback (node.js:238:9) 

C:\Program Files (x86)\nodejs>

我不明白問題在哪裏。我已檢查安裝的mysql模塊。

請幫忙解決問題。

來源

2012-07-25 Chandan Dey

有什麼錯誤？ – hvgotcodes 2012-07-25 12:22:10

@hvgotcodes as OP說，'app.js：6 var client = mysql.createConnection（{^ TypeError：Object＃在Object處沒有方法'createConnection'。' – 2012-07-25 12:44:26

錯誤在app.js中：6 var client = mysql .createConnection（{^ TypeError：對象＃