Mysql错误- 1251 'ER_NOT_SUPPORTED_AUTH_MODE‘

Question

我知道这个问题已经得到了这样的回答，但是建议的修正对我不起作用！

错误：

      throw err; // Rethrow non-MySQL errors
      ^

Error: ER_NOT_SUPPORTED_AUTH_MODE: Client does not support authentication protocol requested by server; consider upgrading MySQL client
    at Handshake.Sequence._packetToError (C:\Dev\Programmierung\FitnessAppExpo\node_modules\mysql\lib\protocol\sequences\Sequence.js:47:14)
    at Handshake.ErrorPacket (C:\Dev\Programmierung\FitnessAppExpo\node_modules\mysql\lib\protocol\sequences\Handshake.js:123:18)
    at Protocol._parsePacket (C:\Dev\Programmierung\FitnessAppExpo\node_modules\mysql\lib\protocol\Protocol.js:291:23)
    at Parser._parsePacket (C:\Dev\Programmierung\FitnessAppExpo\node_modules\mysql\lib\protocol\Parser.js:433:10)
    at Parser.write (C:\Dev\Programmierung\FitnessAppExpo\node_modules\mysql\lib\protocol\Parser.js:43:10)
    at Protocol.write (C:\Dev\Programmierung\FitnessAppExpo\node_modules\mysql\lib\protocol\Protocol.js:38:16)
    at Socket.<anonymous> (C:\Dev\Programmierung\FitnessAppExpo\node_modules\mysql\lib\Connection.js:88:28)
    at Socket.<anonymous> (C:\Dev\Programmierung\FitnessAppExpo\node_modules\mysql\lib\Connection.js:526:10)
    at Socket.emit (events.js:223:5)
    at addChunk (_stream_readable.js:309:12)
    --------------------
    at Protocol._enqueue (C:\Dev\Programmierung\FitnessAppExpo\node_modules\mysql\lib\protocol\Protocol.js:144:48)
    at Protocol.handshake (C:\Dev\Programmierung\FitnessAppExpo\node_modules\mysql\lib\protocol\Protocol.js:51:23)
    at Connection.connect (C:\Dev\Programmierung\FitnessAppExpo\node_modules\mysql\lib\Connection.js:116:18)
    at Object.<anonymous> (C:\Dev\Programmierung\FitnessAppExpo\server\server.js:29:5)
    at Module._compile (internal/modules/cjs/loader.js:955:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:991:10)    
    at Module.load (internal/modules/cjs/loader.js:811:32)
    at Function.Module._load (internal/modules/cjs/loader.js:723:14)
    at Function.Module.runMain (internal/modules/cjs/loader.js:1043:10)
    at internal/main/run_main_module.js:17:11 {
  code: 'ER_NOT_SUPPORTED_AUTH_MODE',
  errno: 1251,
  sqlMessage: 'Client does not support authentication protocol requested by server; consider upgrading MySQL client',
  sqlState: '08004',
  fatal: true
}

我在本地主机上运行了一个带有myphpadmin的Xampp服务器。我试图在myphpadmin中插入以下代码：

ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '';

但是，如果我尝试使用它，它会在phpmyadmin中给出一个错误：

丢失'，‘之前开始一个新的修改操作！

第二项声明是：

未知更改操作(接近by)

当我想在phpmyadmin中使用或执行这个命令时，有什么特别的事情需要做吗？因为写入ALTER的方式不允许我执行它。

节点(快递)代码：

var mysql = require("mysql");
var express = require("express");
var session = require("express-session");
var app = express();
var cors = require("cors");

var bodyParser = require("body-parser");
app.use(bodyParser.json({ limit: "50mb" }));
app.use(bodyParser.urlencoded({ limit: "50mb", extended: true }));

app.use(
  session({
    secret: "ssshhhhh",
    saveUninitialized: true, // (default: true)
    resave: true
  })
);

app.use(cors({ origin: ["http://localhost:4200"], credentials: true }));

var con = mysql.createConnection({
  host: "localhost",
  // host: "127.0.0.1:3307",
  user: "root",
  password: "",
  database: "fitness_app"
});

con.connect(err => {
  if (err) throw err;
  console.log("Database connected -> ");
});

var server = app.listen(8090, () => {
  var host = "localhost";
  var port = server.address().port;
  console.log("App listening at http://%s:%s", host, port);
}); 

~褪色

Answer 1

在中执行以下查询

 ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'password';

其中root作为用户本地主机作为您的URL，密码作为您的密码

然后运行此查询以刷新权限：

flush privileges;

在这样做之后，尝试使用节点进行连接。

如果这不起作用，那就试一试，不要使用“localhost”部分。