我是node.js的新手,所以我卡在了这一点上。我尝试从这些网站学习它:Code Mentor 和 Github
到目前为止,我已经做了以下内容:
var mysql = require('mysql');
var app = express();
// Database operations
var connection = mysql.createConnection({
host : 'localhost',
port : '8888',
user : 'sharad',
password : 'teks',
dbName : 'FirstDataBase'
});
connection.connect(function (error) {
if (error){
console.error('error connecting :' + error.stack);
return;
}
console.log('Connected as id :'+ connection.threadId);
});
app.get("/",function(request,response){
console.log(' saving');
var post = {from:'me', to:'you', msg:'hi'};
connection.query('INSERT INTO FirstDataBase SET ?', post, function(err, result) {
if (err) throw err;
});
});
app.get("/",function(request,response){
connection.query('SELECT * from FirstDataBase', function(err, rows, fields) {
connection.end();
if (!err)
console.log('The solution is: ', rows);
else
console.log('Error while performing Query.');
});
});
app.listen(8888);
我在代码中打印的日志看不到。希望能得到帮助,谢谢。
编辑:
如果我删除最后一行app.listen(8888);
,我会得到一个错误。
error connecting :Error: connect ECONNREFUSED 127.0.0.1:8888
at Object.exports._errnoException (util.js:907:11)
at exports._exceptionWithHostPort (util.js:930:20)
at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1077:14)
--------------------
at Protocol._enqueue (/Users/Admin/IdeaProjects/FirstNodeJS/node_modules/mysql/lib/protocol/Protocol.js:141:48)
at Protocol.handshake (/Users/Admin/IdeaProjects/FirstNodeJS/node_modules/mysql/lib/protocol/Protocol.js:52:41)
at Connection.connect (/Users/Admin/IdeaProjects/FirstNodeJS/node_modules/mysql/lib/Connection.js:136:18)
at Object.<anonymous> (/Users/Admin/IdeaProjects/FirstNodeJS/app.js:40:12)
at Module._compile (module.js:409:26)
at Object.Module._extensions..js (module.js:416:10)
at Module.load (module.js:343:32)
at Function.Module._load (module.js:300:12)
at Function.Module.runMain (module.js:441:10)
at startup (node.js:139:18)
mysql
?你能在控制台上检查一下吗? - abdulbarikmysql --user=your usrname --password=your password
是否已启动mysql服务器。 - abdulbarik