连接Java-MySql:不允许公钥检索

我尝试使用连接器8.0.11将MySql数据库与Java连接。一切似乎都还可以,但是我有一个例外:

线程“主”中的异常java.sql.SQLNonTransientConnectionException:

堆栈跟踪:

    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)

连接器管理器:

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();

}

}

回答:

您应该将客户端选项添加到mysql-

connector中,allowPublicKeyRetrieval=true以允许客户端自动从服务器请求公共密钥。请注意,这AllowPublicKeyRetrieval=True可能允许恶意代理执行MITM攻击以获取纯文本密码,因此默认情况下为False,必须明确启用它。

https://mysql-net.github.io/MySqlConnector/connection-

options/

您也可以useSSL=false在将其用于测试/开发目的时尝试添加

例:

jdbc:mysql://localhost:3306/db?allowPublicKeyRetrieval=true&useSSL=false

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