使用nodejs封装mysql方法

utils/db.js

/**
 * @ Author: WeiLin
 * @ Email: weilin-liao@qq.com
 * @ Create Time: 2022-07-29 09:40:44
 * @ Modified by: WeiLin
 * @ Modified time: 2022-07-29 09:42:19
 * @ Description:
 */

const mysql = require('mysql')
const Config = require('../config.js')

/**
 * 数据库方法
 */
const $db = {
  _query: function(sql, fn, type) {
    const db = mysql.createConnection(Config.Mysql)

    db.query(sql, function (err, res) {
      if (err) {
        console.log(type, err)
      } else {
        fn(res)
      }
      db.end()
    })
  },
  _execute: function(sql, fn, type) {
    $db._query(sql, fn, type)
  },
  // 增
  insert: function(sql, fn) {
    $db._execute(sql, fn, 'insert：')
  },
  // 删
  delete: function(sql, fn) {
    $db._execute(sql, fn, 'delete：')
  },
  // 改
  update: function(sql, fn) {
    $db._execute(sql, fn, 'update：')
  },
  // 查
  query: function(sql, fn) {
    $db._execute(sql, fn, 'query：')
  }
}

exports = module.exports = $db

config.js

module.exports = {
	Mysql: {
		host: 'localhost',
		user: 'root',
		password: 'root',
		database: 'wordpress'
	}
}

使用方法

const $db = require('../utils/db')

$db.query("SELECT * FROM wp_users", function(res) {
    console.log(res)
})