带有 Node.js 的 MySQL
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MySQL with Node.js
提问by crawf
I've just started getting into Node.js. I come from a PHP background, so I'm fairly used to using MySQL for all my database needs.
我刚刚开始接触 Node.js。我来自 PHP 背景，所以我相当习惯使用 MySQL 来满足我的所有数据库需求。
How can I use MySQL with Node.js?
如何在 Node.js 中使用 MySQL？
回答by mak
Check out the node.js module list
- node-mysql— A node.js module implementing the MySQL protocol
- node-mysql2— Yet another pure JS async driver. Pipelining, prepared statements.
- node-mysql-libmysqlclient— MySQL asynchronous bindings based on libmysqlclient
- node-mysql— 一个实现 MySQL 协议的 node.js 模块
- node-mysql2— 另一个纯 JS 异步驱动程序。流水线，准备好的语句。
- node-mysql-libmysqlclient— 基于 libmysqlclient 的 MySQL 异步绑定
node-mysql looks simple enough:
node-mysql 看起来很简单：
var mysql = require('mysql');
var connection = mysql.createConnection({
host : 'example.org',
user : 'bob',
password : 'secret',
});
connection.connect(function(err) {
// connected! (unless `err` is set)
});
Queries:
查询：
var post = {id: 1, title: 'Hello MySQL'};
var query = connection.query('INSERT INTO posts SET ?', post, function(err, result) {
// Neat!
});
console.log(query.sql); // INSERT INTO posts SET `id` = 1, `title` = 'Hello MySQL'
回答by yojimbo87
node-mysqlis probably one of the best modules out there used for working with MySQL database which is actively maintained and well documented.
node-mysql可能是最好的模块之一，用于处理 MySQL 数据库，该数据库得到积极维护且文档齐全。
回答by fmsf
Since this is an old thread just adding an update:
由于这是一个旧线程，只是添加了更新：
To install the MySQL node.js driver:
要安装 MySQL node.js 驱动程序：
If you run just npm install mysql, you need to be in the same directory that your run your server. I would advise to do it as in one of the following examples:
如果您只运行npm install mysql，则需要位于运行服务器的同一目录中。我建议按照以下示例之一进行操作：
For global installation:
对于全局安装：
npm install -g mysql
For local installation:
对于本地安装：
1- Add it to your package.jsonin the dependencies:
1- 将其添加到您package.json的依赖项中：
"dependencies": {
"mysql": "~2.3.2",
...
2- run npm install
2-运行 npm install
Note that for connections to happen you will also need to be running the mysql server (which is node independent)
请注意，要发生连接，您还需要运行 mysql 服务器（与节点无关）
To install MySQL server:
安装 MySQL 服务器：
There are a bunch of tutorials out there that explain this, and it is a bit dependent on operative system. Just go to google and search for how to install mysql server [Ubuntu|MacOSX|Windows]. But in a sentence: you have to go to http://www.mysql.com/downloads/and install it.
有很多教程可以解释这一点，它有点依赖于操作系统。只需去谷歌搜索how to install mysql server [Ubuntu|MacOSX|Windows]。但一句话：你必须去http://www.mysql.com/downloads/并安装它。
回答by Shaikh Shahid
Here is production code which may help you.
这是生产代码，可以帮助您。
Package.json
包.json
{
"name": "node-mysql",
"version": "0.0.1",
"dependencies": {
"express": "^4.10.6",
"mysql": "^2.5.4"
}
}
Here is Server file.
这是服务器文件。
var express = require("express");
var mysql = require('mysql');
var app = express();
var pool = mysql.createPool({
connectionLimit : 100, //important
host : 'localhost',
user : 'root',
password : '',
database : 'address_book',
debug : false
});
function handle_database(req,res) {
pool.getConnection(function(err,connection){
if (err) {
connection.release();
res.json({"code" : 100, "status" : "Error in connection database"});
return;
}
console.log('connected as id ' + connection.threadId);
connection.query("select * from user",function(err,rows){
connection.release();
if(!err) {
res.json(rows);
}
});
connection.on('error', function(err) {
res.json({"code" : 100, "status" : "Error in connection database"});
return;
});
});
}
app.get("/",function(req,res){-
handle_database(req,res);
});
app.listen(3000);
Reference : https://codeforgeek.com/2015/01/nodejs-mysql-tutorial/
回答by Quy Tang
KnexJs can be used as an SQL query builder in both Node.JS and the browser. I find it easy to use. Let try it - Knex.js
KnexJs 可以在 Node.JS 和浏览器中用作 SQL 查询构建器。我觉得它很容易使用。让我们试试吧 - Knex.js
$ npm install knex --save
# Then add one of the following (adding a --save) flag:
$ npm install pg
$ npm install sqlite3
$ npm install mysql
$ npm install mysql2
$ npm install mariasql
$ npm install strong-oracle
$ npm install oracle
$ npm install mssql
var knex = require('knex')({
client: 'mysql',
connection: {
host : '127.0.0.1',
user : 'your_database_user',
password : 'your_database_password',
database : 'myapp_test'
}
});
You can use it like this
你可以像这样使用它
knex.select('*').from('users')
or
或者
knex('users').where({
first_name: 'Test',
last_name: 'User'
}).select('id')
回答by Lex Soft
Imo, you should try MySQL Connector/Node.js which is the official Node.js driver for MySQL. See ref-1and ref-2for detailed explanation. I have tried mysqljs/mysql which is available here, but I don't find detailed documentation on classes, methods, properties of this library.
Imo，您应该尝试 MySQL Connector/Node.js，它是 MySQL 的官方 Node.js 驱动程序。有关详细说明，请参阅ref-1和ref-2。我已经尝试了 mysqljs/mysql，它可以在这里找到，但是我没有找到关于这个库的类、方法、属性的详细文档。
So I switched to the standard MySQL Connector/Node.jswith X DevAPI, since it is an asynchronous Promise-basedclient library and provides good documentation.
Take a look at the following code snippet :
所以我切换到标准MySQL Connector/Node.jswith X DevAPI，因为它是一个异步的基于 Promise 的客户端库，并提供了很好的文档。看看下面的代码片段：
const mysqlx = require('@mysql/xdevapi');
const rows = [];
mysqlx.getSession('mysqlx://localhost:33060')
.then(session => {
const table = session.getSchema('testSchema').getTable('testTable');
// The criteria is defined through the expression.
return table.update().where('name = "bar"').set('age', 50)
.execute()
.then(() => {
return table.select().orderBy('name ASC')
.execute(row => rows.push(row));
});
})
.then(() => {
console.log(rows);
});
回答by Mariano Iglesias
You can also try out a newer effort known as Node.js DBthat aims to provide a common framework for several database engines. It is built with C++ so performance is guaranteed.
您还可以尝试一种名为Node.js DB的新成果，旨在为多个数据库引擎提供一个通用框架。它是用 C++ 构建的，因此性能得到保证。
Specifically you could use its db-mysql driver for Node.js MySQL support.
具体来说，您可以将其 db-mysql 驱动程序用于Node.js MySQL 支持。
回答by Prabin Tp
connect the mysql database by installing a library. here, picked the stable and easy to use node-mysql module.
通过安装库连接mysql数据库。在这里，选择了稳定且易于使用的 node-mysql 模块。
npm install [email protected]
var http = require('http'),
mysql = require('mysql');
var sqlInfo = {
host: 'localhost',
user: 'root',
password: 'urpass',
database: 'dbname'
}
client = mysql.createConnection(sqlInfo);
client.connect();
