先安裝npm模塊項目

npm init

安裝mysql

npm install mysql --save

Nodejs 連接msyql

// 導入mysql

const mysql = require('mysql');

// 連接mysql

const connection = mysql.createConnection({

host: '127.0.0.1',

user: 'root',

password: 'password',

port: '3306',

database: 'test'

});

connection.connect();

// 結束連接

connection.end();

增

// 引入mysql

const mysql = require('mysql');

// 連接myql

const connection = mysql.createConnection({

host: '127.0.0.1',

user: 'root',

password: 'password',

port: '3306',

database: 'test',

});

connection.connect();

// 插入語句

let addSql = "insert into article (title, author, date) values (?, ?, now())";

let addSqlParams = ['Today is noce', 'Bob'];

// 執行插入語句

connection.query(addSql, addSqlParams, (err, result) => {

if (err) {

throw err;

}

// 插入成功輸出

console.log('插入成功');

console.log(result);

});

// 斷開連接msyql

connection.end();

刪

// 引入mysql

const mysql = require('mysql');

// 連接mysql

const connection = mysql.createConnection({

host: '127.0.0.1',

user: 'root',

password: 'password',

port: '3306',

database: 'test'

});

connection.connect();

// 刪除語句

let sql = "delete from article where id = 10";

// 執行刪除語句

connection.query(sql, (err, data) => {

if (err) {

throw err;

}

// 執行成功

console.log('delete success!');

console.log(data);

});

// 斷開連接msyql

connection.end();

改

// 導入mysql

const mysql = require('mysql');

// 連接mysql

const connection = mysql.createConnection({

host: '127.0.0.1',

user: 'root',

password: 'password',

port: '3306',

database: 'test'

});

connection.connect();

// 更新語句

let modSql = "update article set title = ?, author = ? where id like ?";

let modSqlParams = ['今晚學習nodejs', '一波萬波', 12];

// 執行更新語句

connection.query(modSql, modSqlParams, (err, data) => {

if (err) {

throw err;

}

console.log('upload success!');

console.log(data)

});

connection.end();

查

// 導入mysql

const mysql = require('mysql');

// 連接mysql

const connection = mysql.createConnection({

host: '127.0.0.1',

user: 'root',

password: 'password',

port: '3306',

database: 'test',

});

connection.connect();

// 查詢語句

let sql = 'SELECT * FROM article';

// 執行查詢語句

connection.query(sql, (err, data) => {

if (err) {

console.log('[SELECT ERROR] - ', err.message);

return;

}

// 查詢成功

console.log(data);

});

connection.end();

總結

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