如何记录hibernate原生SQL而不是HQL？

<property name="show_sql">true</property>

log4j.logger.org.hibernate.SQL=DEBUG

import org.hibernate.jdbc.LoggingSubSystem;

public class CustomLoggingSubSystem implements LoggingSubSystem {
    @Override
    public boolean requiresDedicatedLoggers() {
        return false;
    }

    @Override
    public void logStatement(String statement, org.hibernate.engine.jdbc.spi.JdbcServices jdbcServices) {
        // 在这里处理记录SQL语句的逻辑
        System.out.println(statement);
    }

    @Override
    public void logStatement(String statement, org.hibernate.engine.jdbc.spi.JdbcServices jdbcServices, org.hibernate.engine.jdbc.spi.ResultSetProcessor resultSetProcessor) {
        // 在这里处理记录SQL语句的逻辑
        System.out.println(statement);
    }
}

<property name="hibernate.jdbc.logging_subsystem" value="com.example.CustomLoggingSubSystem" />