Question

我正在尝试将NodeJS与MySQL数据库连接。我正在使用WAMP。它仅连接默认数据库，例如“ mysql”和“ information_schema”，但我创建的那些数据库未与NodeJ连接，并给了我以下错误。请让我知道我要去哪里错了。

代码

**Server.js**
----------
const express = require("express");
const app    = express();
const bodyParser = require("body-parser"); 
const mysql = require("mysql");

app.use(bodyParser.json());

var connection = mysql.createConnection({
    host     : "localhost",
    user     : "root", //User Name
    password : "",  // No password
    database : "techbiz", // Database Name
    multipleStatements:true

  });

  connection.connect((err)=>{
      if(!err)
      {
          console.log("Database connected ");
      }
      else{
console.log(err)      }
  })

// Initialize port

const PORT =  process.env.PORT || 5000;

// send rquest to web page

app.get('/',(req,res) => res.send(`Automize Business Solution running on :${PORT}`));

app.listen(PORT,()=>console.log("Server is running"));




 [Database][1]

**Error**
----------
Server is running
{ Error: ER_BAD_DB_ERROR: Unknown database 'techbiz'
    at Handshake.Sequence._packetToError (K:\WebProjects\MySQL\abs-server\node_modules\mysql\lib\protocol\sequences\Sequence.js:47:14)
    at Handshake.ErrorPacket (K:\WebProjects\MySQL\abs-server\node_modules\mysql\lib\protocol\sequences\Handshake.js:123:18)
    at Protocol._parsePacket (K:\WebProjects\MySQL\abs-
    at Socket.<anonymous> (K:\WebProjects\MySQL\abs-
    at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
    at Function.Module._load (internal/modules/cjs/loader.js:585:3)
    at Function.Module.runMain (internal/modules/cjs/loader.js:829:12)
  code: 'ER_BAD_DB_ERROR',
  errno: 1049,
  sqlMessage: 'Unknown database \'techbiz\'',
  sqlState: '42000',
  fatal: true }






  [1]: https://i.stack.imgur.com/E9MSc.png

谢谢

Answer 1

我只是更改了我的wamp版本并使用MySQL 5.5.8，现在相同的代码可以正常工作。谢谢

节点js未与MySQL新创建的数据库连接

1 个答案: