node安装Mysql模块
①.cmd安装淘宝镜像
npm install -g cnpm
在项目中安装MySQL模块
cnpm install mysql
②.配置环境变量
在环境变量中增加C:\Program Files\MySQL\MySQL Server 8.0\bin 变量名称可以随便起，比方说mysql_home 变量值为C:\Program Files\MySQL\MySQL Server 8.0\bin
③.报错
Client does not support authentication protocol requested by server 1.通过命令行进入解压的mysql根目录(C:\Program Files\MySQL\MySQL Server 8.0\bin)下。 2.登陆数据库
mysql -u root -p
3.输入root的密码
Enter password: ******
4.更改加密方式
mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'password' PASSWORD EXPIRE NEVER;
5.更改密码：该例子中 123456为新密码
mysql> ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '123456';
6.刷新：
mysql> FLUSH PRIVILEGES;
④.js文件格式
var mysql = require('mysql');//引用Mysql
var connection = mysql.createConnection({//配置连接
host: 'localhost',//数据库地址
user : "xxx",//数据库用户
password: "xxx",//数据库密码
database : "world"//需要连接的数据库
});
connection.connect();//连接数据库
connection.query('select * from city',function(err,rows,fields){//执行sql语句
if(err) throw err ;
console.log('thesolution is:' ,rows[0]);
});
connection.end();//断开连接