反馈错误后，java Wicket 1.4.9无法从modal使用AjaxRequestTarget！

Question

我创建了一个简单的wicket web应用程序，当我在TextField中设置require为true，并在TextField中使用null值提交时，使用description来解决这个问题。我收到了一条反馈面板消息（听起来不错），但我的用例我想从模式窗口获取数据并发送回此表单，但它无法AjaxRequestTarget更新TextField数据，也无法在其他TextField上输入任何内容。我解决不了这个问题。请帮帮我。但当我再次运行web应用程序并使用模式窗口时，我可以在文本字段中设置数据

这是我的示例代码

用户实体：

public class User implements Serializable {

private String username;
private String password;

public User(String username, String password){
    this.username = username;
    this.password = password;
}

public User() {
    // TODO Auto-generated constructor stub
}

public String getUsername() {
    return username;
}

public void setUsername(String username) {
    this.username = username;
}

public String getPassword() {
    return password;
}

public void setPassword(String password) {
    this.password = password;
}
}

我的页面

public class FormPage extends WebPage{

private User user;
private ModalWindow modal;
private TestForm form;

public FormPage() {
    user = new User();

    modal = new ModalWindow("modal");
    modal.setOutputMarkupId(true);
    modal.setInitialHeight(300);
    modal.setInitialWidth(300);
    add(modal);

    form = new TestForm("form");
    add(form);
}

private class TestForm extends Form {

    private FeedbackPanel feedback;
    private TextField<String> username;
    private AjaxLink popupButton;
    private AjaxButton submitButton;
    private TextField<String> password;

    public TestForm(String id) {
        super(id);

        feedback = new FeedbackPanel("feedback");
        feedback.setOutputMarkupId(true);
        add(feedback);

        username = new TextField<String>("username", new PropertyModel<String>(FormPage.this, "user.username"));
        username.setOutputMarkupId(true);
        username.setRequired(true);
        add(username);

        password = new TextField<String>("password", new PropertyModel<String>(FormPage.this, "user.password"));
        password.setOutputMarkupId(true);
        password.setRequired(true);
        add(password);

        popupButton = new AjaxLink("popupButton") {

            @Override
            public void onClick(AjaxRequestTarget target) {
                UserPopup popup = new UserPopup(modal.getContentId()) {

                    @Override
                    public void onSuccess(AjaxRequestTarget target, User user) {
                        FormPage.this.user = user;
                        target.addComponent(username);
                        target.addComponent(password);
                        modal.close(target);
                    }
                };
                modal.setContent(popup);
                modal.show(target);
            }
        };
        add(popupButton);

        submitButton = new AjaxButton("submitButton", this) {

            @Override
            protected void onSubmit(AjaxRequestTarget target, Form<?> form) {
                // TODO Auto-generated method stub

            }

            @Override
            protected void onError(AjaxRequestTarget target, Form<?> form) {
                target.addComponent(feedback);
            }
        };
        add(submitButton);

    }

}

}

我的弹出窗口：

public abstract class UserPopup extends Panel{

private User user;

public UserPopup(String id) {
    super(id);

    user = new User("name","pass");

    add(new AjaxLink("userLink"){

        @Override
        public void onClick(AjaxRequestTarget target) {
            onSuccess(target, user);
        }


    });
}

public abstract void onSuccess(AjaxRequestTarget target,User user);

}