我在控制器中有一个动作，当点击按钮时，它正在发送电子邮件。我想向用户显示一条消息，以便在所有电子邮件发送时通知他们。

@Action(value = "sendRequest", results = { @Result(name = SUCCESS, location = "mail.jsp"),
            @Result(name = ERROR, location = "mail.jsp")})
public class MailController {
    public String sendMails() {
        //code where the mails are sending to users
        return SUCCESS;
    }
}

<div>
    <span class="button"><input type="button"
    id="_mailAll" class="buttonMails" value="Send" /></span>
</div>

$('#_mailAll').click(function () {
        var form = $('#_dashboardForm') ;
        form.attr('action', 'sendEmails.action');
        form.submit();
});