測試連接mysql，我的代碼:
mysql.js
const mysql = require('mysql')
// 連接配置
const cfg = {
host: "localhost",
user: "root",
password: "123456",
database: "test"
}
// 創建連接對象
const conn = mysql.createConnection(cfg)
// 連接
conn.connect(err => {
if (err) {
console.log('連接錯誤啦: ', err);
} else {
console.log('連接成功');
}
})
nodemon mysql.js 監聽報錯中...
出現報錯：Error: ER_NOT_SUPPORTED_AUTH_MODE: Client does not support authentication protocol requested by server; consider upgrading MySQL client，如下所示。
Error: ER_NOT_SUPPORTED_AUTH_MODE: Client does not support authentication protocol requested by server; consider upgrading MySQL client
at Handshake.Sequence._packetToError (/Users/beauty_z/Documents/node/lesson4/mysql/node_modules/[email protected]@mysql/lib/protocol/sequences/Sequence.js:47:14)
at Handshake.ErrorPacket (/Users/beauty_z/Documents/node/lesson4/mysql/node_modules/[email protected]@mysql/lib/protocol/sequences/Handshake.js:123:18)
at Protocol._parsePacket (/Users/beauty_z/Documents/node/lesson4/mysql/node_modules/[email protected]@mysql/lib/protocol/Protocol.js:291:23)
at Parser._parsePacket (/Users/beauty_z/Documents/node/lesson4/mysql/node_modules/[email protected]@mysql/lib/protocol/Parser.js:433:10)
at Parser.write (/Users/beauty_z/Documents/node/lesson4/mysql/node_modules/[email protected]@mysql/lib/protocol/Parser.js:43:10)
at Protocol.write (/Users/beauty_z/Documents/node/lesson4/mysql/node_modules/[email protected]@mysql/lib/protocol/Protocol.js:38:16)
at Socket.<anonymous> (/Users/beauty_z/Documents/node/lesson4/mysql/node_modules/[email protected]@mysql/lib/Connection.js:88:28)
at Socket.<anonymous> (/Users/beauty_z/Documents/node/lesson4/mysql/node_modules/[email protected]@mysql/lib/Connection.js:526:10)
at Socket.emit (events.js:210:5)
at addChunk (_stream_readable.js:326:12)
--------------------
at Protocol._enqueue (/Users/beauty_z/Documents/node/lesson4/mysql/node_modules/[email protected]@mysql/lib/protocol/Protocol.js:144:48)
at Protocol.handshake (/Users/beauty_z/Documents/node/lesson4/mysql/node_modules/[email protected]@mysql/lib/protocol/Protocol.js:51:23)
at Connection.connect (/Users/beauty_z/Documents/node/lesson4/mysql/node_modules/[email protected]@mysql/lib/Connection.js:116:18)
at Object.<anonymous> (/Users/beauty_z/Documents/node/lesson4/mysql/mysql.js:15:6)
at Module._compile (internal/modules/cjs/loader.js:1121:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1160:10)
at Module.load (internal/modules/cjs/loader.js:976:32)
at Function.Module._load (internal/modules/cjs/loader.js:884:14)
at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:67:12)
at internal/main/run_main_module.js:17:47 {
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
}
原因：
導致這個錯誤的原因是，目前，最新的mysql模塊並未完全支持MySQL 8的“caching_sha2_password”加密方式，而“caching_sha2_password”在MySQL 8中是默認的加密方式。因此，下面的方式命令是默認已經使用了“caching_sha2_password”加密方式，該賬號、密碼無法在mysql模塊中使用。
方案：
解決方法是重新修改用戶root的密碼，並指定mysql模塊能夠支持的加密方式：
mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY '123456';
再次執行
nodemon mysql.js
連接成功
參考文章：