mysql踩坑 - 技术栈

mysql踩坑

sleeppingfrog2023-12-15 14:23

关于安装

1报错：ER_NOT_SUPPORTED_AUTH_MODE: Client does not support authentication protocol requested by server; consider upgrading MySQL client具体代码如下：

import mysql from "mysql"

//连接数据库
const db=mysql.createPool({
  host:'127.0.0.1',
  user:"root",  //一定要搞清楚这里的user之前设置的是哪个
  port:3306,
  password:"admin123",
  database:'test'
})

//测试数据库是否连接成功
db.query('select1',(err,result)=>{
  if(err){
    console.log("err",err.message)
    return
  }
  console.log("result:",result)
})

解决办法：

1进入mysql安装目录下的bin目录执行cmd，比如我的安装路径是C:\Windows\System32\cmd.exe

1.启动数据库 net start mysql

2.登录数据库 mysql -u root -p

此时要输入密码；

3.用数据库

eg：有 sys，name , age三个数据库你用哪个就需要执行命令,如下

mysql> use name

alter user 'root'@'localhost' identified with mysql_native_password by '123456';

//123456为数据库密码（这个要记住）

5.flush privileges;

2 测试连接是否成功时，报错

ER_PARSE_ERROR: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'select1' at line 1

解决办法：

db.query('select 1',(err,result)=>{
  if(err){
    console.log("err",err.message)
    return
  }
  console.log("result:",result)
})
//注意select 1