Connection Java-MySql : Public Key Retrieval is no

Question

I try to connect MySql database with Java using connector 8.0.11. Everything seems to be ok but I have this exception:

Exception in thread "main" java.sql.SQLNonTransientConnectionException: Public Key Retrieval is not allowed

Stack Trace:

    Exception in thread "main" java.sql.SQLNonTransientConnectionException: Public Key Retrieval is not allowed at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:108) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:95) at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122) at 
 com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:862) at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:444) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:230) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:226) at com.mysql.cj.jdbc.MysqlDataSource.getConnection(MysqlDataSource.java:438) at com.mysql.cj.jdbc.MysqlDataSource.getConnection(MysqlDataSource.java:146) at com.mysql.cj.jdbc.MysqlDataSource.getConnection(MysqlDataSource.java:119) at ConnectionManager.getConnection(ConnectionManager.java:28) at Main.main(Main.java:8)

Connector Manager:

public class ConnectionManager {

    public static final String serverTimeZone = "UTC";
    public static final String serverName = "localhost";
    public static final String databaseName ="biblioteka";
    public static final int portNumber = 3306;
    public static final String user = "anyroot";
    public static final String password = "anyroot";

    public static Connection getConnection() throws SQLException {

        MysqlDataSource dataSource = new MysqlDataSource();

        dataSource.setUseSSL( false );
        dataSource.setServerTimezone( serverTimeZone );
        dataSource.setServerName( serverName );
        dataSource.setDatabaseName( databaseName );
        dataSource.setPortNumber( portNumber );
        dataSource.setUser( user );
        dataSource.setPassword( password );

        return dataSource.getConnection();
    }
}

Answer 1

Give connection URL as jdbc:mysql://localhost:3306/hb_student_tracker?allowPublicKeyRetrieval=true&useSSL=false&serverTimezone=UTC

Answer 2

I solve this issue using below configuration on spring boot framework

spring.datasource.url=jdbc:mysql://localhost:3306/db-name?useUnicode=true&characterEncoding=UTF-8&allowPublicKeyRetrieval=true&useSSL=false
spring.datasource.username=root
spring.datasource.password=root

Answer 3

Update the useSSL=true in spring boot application connection with mysql;

jdbc:mysql://localhost:3306/demo?useUnicode=true&characterEncoding=utf8&useSSL=true&useLegacyDatetimeCode=false&serverTimezone=UTC

Answer 4

Alternatively to the suggested answers you could try and use mysql_native_password authentication plugin instead of caching_sha2_password authentication plugin.

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

Answer 5

I found this issue frustrating because I was able to interact with the database yesterday, but after coming back this morning, I started getting this error.

I tried adding the allowPublicKeyRetrieval=true flag, but I kept getting the error.

What fixed it for me was doing Project->Clean in Eclipse and Clean on my Tomcat server. One (or both) of those fixed it.

I don't understand why, because I build my project using Maven, and have been restarting my server after each code change. Very irritating...

Answer 6

If you are getting the following error while connecting the mysql (either local or mysql container running the mysql):

java.sql.SQLNonTransientConnectionException: Public Key Retrieval is not allowed

Solution: Add the following line in your database service:

command: --default-authentication-plugin=mysql_native_password