java – 如何在服务层中进行事务

public interface UsersDao {    
public Users insert(Users object); 
}



public class UsersDaoImpl implements UsersDao {

    @Override
    public Users insert(Users object) {

        String sqlQuery = null;
        PreparedStatement stmt = null;

        try (Connection connection = DbConnector.getConnection()) {

            sqlQuery = "INSERT INTO `users`(login,password,passwordSalt,name,surname)" + " values (?,?,?);";

            stmt = connection.prepareStatement(sqlQuery);

            stmt.setString(1,"fsf");
            stmt.setString(2,"f");
            stmt.setString(3,"af");
            stmt.setString(4,"fddsg");
            stmt.setString(5,"sdgsgd");
            stmt.executeUpdate();
            stmt.close();
            return object;

        } catch (SQLException e) {
            System.err.println(e.getMessage());
            return null;
        }
    }

这是我的服务层类和接口.

public interface UsersService{
public Users insert(Users object);
}

public class UsersServiceImpl implements UsersService{
UsersDaoImpl users = new UsersDaoImpl();

public Users insert(Users object){

return users.insert(object);

}

我需要写入我的服务方法,我可以在异常捕获时进行回滚吗？如何在我的服务方法中记录写入事务？你能告诉我一些例子吗？感谢名单！