我尝试使用连接器 8.0.11 将 MySQL 数据库与 Java 连接。一切似乎都很好，但我得到了这个异常(exception):
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)
这是我的连接管理器类:
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();
}
}
最佳答案
您应该向 mysql 连接器添加客户端选项 allowPublicKeyRetrieval=true 以允许客户端自动从服务器请求公钥。请注意，allowPublicKeyRetrieval=True 可能允许恶意代理执行 MITM 攻击以获取明文密码，因此默认情况下为 False，必须显式启用。
参见MySQL .NET Connection String Options
当您将其用于测试/开发目的时，您也可以尝试添加 useSSL=false
示例:
jdbc:mysql://localhost:3306/db?allowPublicKeyRetrieval=true&useSSL=false
关于java - 连接 Java - MySQL : Public Key Retrieval is not allowed，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/59037833/