The measure of damages recoverable in actions upon all official bonds for the misconduct of the officer, unless otherwise specially enacted, shall be the amount of injury actually sustained, including the reasonable expenses of the action to the plaintiff and the costs of court. In all cases when little or no damage is actually sustained and the officer has not acted in good faith, the jury may find for the plaintiff an amount as exemplary damages which, taking all the circumstances together, shall not be excessive or oppressive.