Primefaces p:orderList java支持列表不更新

Question

我目前正在使用PrimeFaces的组件实现一个可排序列表，嵌入在一个。然而，当我保存列表并将其提交回服务器时，由于某种原因，重新排列的项目没有反映在backing bean中。既然Primefaces showcase能够看到这些变化，那么我做错了什么呢？

XHTML代码段:

<h:form id="confirmDialogForm">
            <p:confirmDialog id="arrangeProjDialog" widgetVar="arrangeDlg" width="600"
                header="Meeting Order" 
                appendToBody="true" message="Drag and drop to rearrange meeting order">     

            <p:orderList id="arrangeProjDialogList" 
                value="#{adminMeetingListBean.orderProjList}"
                converter="#{adminMeetingListBean.rowConverter}"
                var="po"
                controlsLocation="left"
                styleClass="wideList"
                itemLabel="#{po.projectTitle}" 
                itemValue="#{po}"
                >
                <f:facet name="caption">Proposals</f:facet> 
            </p:orderList>

                <p:commandButton value="Save" ajax="true" process="arrangeProjDialogList @this" 
                    actionListener="#{adminMeetingListBean.updateProposalMeetingOrder}" onclick="arrangeDlg.hide();">
                </p:commandButton>
                <p:button value="Cancel" onclick="arrangeDlg.hide(); return false;" />
            </p:confirmDialog>  
        </h:form>

支持Bean：

public void updateProposalMeetingOrder() {

    if (selectedMeeting != null) {

        orderProjTitles.get(0);

        meetingService.updateMeetingProjSequence(orderProjList, selectedMeeting.getMeetingId());
    }

}

该列表是POJO“ProposalOrderRow”对象的列表。其定义如下：

public class ProposalOrderRow implements Serializable {

    private static final long serialVersionUID = -5012155654584965160L;

    private int dispSeq;
    private int appId;
    private int assignmentId;
    private String refNo;
    private String projectTitle;

    public int getDispSeq() {
        return dispSeq;
    }

    public void setDispSeq(int dispSeq) {
        this.dispSeq = dispSeq;
    }

    public int getAppId() {
        return appId;
    }

    public void setAppId(int appId) {
        this.appId = appId;
    }

    public String getRefNo() {
        return refNo;
    }

    public void setRefNo(String refNo) {
        this.refNo = refNo;
    }

    public String getProjectTitle() {
        return projectTitle;
    }

    public void setProjectTitle(String projectTitle) {
        this.projectTitle = projectTitle;
    }

    public int getAssignmentId() {
        return assignmentId;
    }

    public void setAssignmentId(int assignmentId) {
        this.assignmentId = assignmentId;
    }
}

转换器：

@FacesConverter("proposalOrderRowConverter")
public class ProposalOrderRowConverter implements Converter {

    private List<ProposalOrderRow> orderRows;

    @Override
    public Object getAsObject(FacesContext context, UIComponent component, String newValue) {

        if (newValue.isEmpty()) {
            return null;
        }

        for (ProposalOrderRow item : orderRows) {

            String refNo = item.getRefNo();

            if (refNo.equals(newValue)) {
                return item;
            }

        }

        return null;
    }

    @Override
    public String getAsString(FacesContext context, UIComponent component, Object value) {

        if (value == null) {
            return "";
        } 

        ProposalOrderRow row = (ProposalOrderRow) value;

        String output = row.getRefNo();

        return output;
    }

    public List<ProposalOrderRow> getOrderRows() {
        return orderRows;
    }

    public void setOrderRows(List<ProposalOrderRow> orderRows) {
        this.orderRows = orderRows;
    }

}

Answer 1

此问题是由确认对话框中的appendToBody="true "导致的。将其设置为false解决了问题。

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