Question

请我在nodejs中使用expressjs。我实际上是nodejs的新手。

我尝试使用我通常的凭据连接到mysql但是我收到以下错误。

请帮帮我。谢谢。

"C:\Program Files (x86)\JetBrains\IntelliJ IDEA 15.0\bin\runnerw.exe" "C:\Program Files\nodejs\node.exe" bin\www
Tue, 08 Dec 2015 21:39:57 GMT NodeApp:server Listening on port 3306
c:\Users\John\IdeaProjects\NodeApp\node_modules\mysql\lib\protocol\Parser.js:82
        throw err;
        ^

Error: ER_ACCESS_DENIED_ERROR: Access denied for user ''@'localhost' (using password: YES)
    at Handshake.Sequence._packetToError (c:\Users\John\IdeaProjects\NodeApp\node_modules\mysql\lib\protocol\sequences\Sequence.js:48:14)
    at Handshake.ErrorPacket (c:\Users\John\IdeaProjects\NodeApp\node_modules\mysql\lib\protocol\sequences\Handshake.js:101:18)
    at Protocol._parsePacket (c:\Users\John\IdeaProjects\NodeApp\node_modules\mysql\lib\protocol\Protocol.js:274:23)
    at Parser.write (c:\Users\John\IdeaProjects\NodeApp\node_modules\mysql\lib\protocol\Parser.js:77:12)
    at Protocol.write (c:\Users\John\IdeaProjects\NodeApp\node_modules\mysql\lib\protocol\Protocol.js:39:16)
    at Socket.<anonymous> (c:\Users\John\IdeaProjects\NodeApp\node_modules\mysql\lib\Connection.js:96:28)
    at emitOne (events.js:77:13)
    at Socket.emit (events.js:169:7)
    at readableAddChunk (_stream_readable.js:146:16)
    at Socket.Readable.push (_stream_readable.js:110:10)
    --------------------
    at Protocol._enqueue (c:\Users\John\IdeaProjects\NodeApp\node_modules\mysql\lib\protocol\Protocol.js:135:48)
    at Protocol.handshake (c:\Users\John\IdeaProjects\NodeApp\node_modules\mysql\lib\protocol\Protocol.js:52:41)
    at Connection.connect (c:\Users\John\IdeaProjects\NodeApp\node_modules\mysql\lib\Connection.js:123:18)
    at Object.<anonymous> (c:\Users\John\IdeaProjects\NodeApp\routes\about.js:16:12)
    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:311:12)
    at Module.require (module.js:366:17)
    at require (module.js:385:17)

Process finished with exit code 1

Answer 1

如readme所示，您应使用user代替username：

var mysql = require('mysql');

var connection = mysql.createConnection({
    host : 'localhost',
    user : 'root',
    password : 'password',
    database : 'db_name'
})

connection.connect();

Answer 2

用户：和密码：请使用小写字母将它们全部写成小写提到的标题（用户名和密码）变为大写，将显示错误 'ER_ACCESS_DENIED_ERROR：对用户“ @'localhost”的访问被拒绝（使用密码：是）相反，主机和数据库不区分大小写

Host     : 'localhost',
user     : 'user_username',// if you create a user otherwise use 'root'
Database : 'the database',
password : 'your password',

Nodejs中的MySql连接拒绝访问

2 个答案: