Wicket复选框未更新

Question

我正在尝试使用wicket获取一个复选框。问题是，选项列表现在显示在页面上，没有选中，但是当我想检查其中一个时，它会被检查，然后在我释放鼠标按钮后直接UNCHECKED。我很确定它与wicket模型有关，因为我没有例外启动服务器，加载页面等。

可能是什么原因？

public class PackageSummaryPanel extends Panel {

private static final List<String> COLLECTED_DATA_CHOICES = Arrays.asList("Shot Report",
        "Analysis Report", "Reliability Report", "Costs Estimation", "External Report");

public PackageSummaryPanel(String id, IModel<PackageSummary> model) {
    super(id, new CompoundPropertyModel<PackageSummary>(model));
}

private void addCollectedData() {
    add(new CheckboxField("collectedData", fieldLabel("collectedData"),
            new SplitterModel(new PropertyModel<String>(getDefaultModel(),
                    "collectedData")), COLLECTED_DATA_CHOICES).);

}

这是bean：

 @Embeddable
 public class PackageSummary implements Serializable {

private static final long serialVersionUID = 1L;

@Column(name = DEVICE_PACKAGE_SUMMARY_COLLECTED_DATA)
private String collectedData;

public PackageSummary() {
    collectedData = "";
}

public String getCollectedData() {
    return collectedData;
}

public void setCollectedData(String collectedData) {
    this.collectedData = collectedData;
}


 }