setPropertyActionListener设置为null

Question

我将当前迭代的dataTable作为托管bean的属性使用.Here我想获取一个localproduct并将其发送到对话框以更改值。但我没有添加代码，因为我的setListener不起作用，它没有设置或设置为null。但是，始终将其设置为null。选择模式可以杀死setPropertyActionListener吗？

视图，local-product.xhtml：

 <ui:define name="content">
        <h:form prependId="false" style="margin-top: 25px" id="form">
            <p:dataTable id="tableData" value="#{localProductUI.localProductLazyModel}" var="localProduct" style="max-width: 1200px; margin-top: 20px;" paginator="true"
                         paginatorTemplate="{CurrentPageReport}  {FirstPageLink} {PreviousPageLink} {PageLinks} {NextPageLink} {LastPageLink} {RowsPerPageDropdown}"
                         rowsPerPageTemplate="20,100,200,500" rows="20" lazy="true" rowIndexVar="row" editable="true" editMode="cell"
                         widgetVar="productTable"  reflow="true" selection="#{localProductUI.selectedNewLocalProduct}" rowKey="#{localProduct.id}"  rowSelectMode="checkbox">
                <f:facet name="header">
                    <h:outputText value="Number of products: #{localProductUI.countProduct}" id="card-count"/>
                </f:facet>

                <p:column selectionMode="multiple" filterValue="" style="width: 20px"/>

                <p:column headerText="Id" sortBy="#{localProduct.id}">
                    #{localProduct.id}
                </p:column>

                <p:column headerText="Name" filterBy="#{localProduct.name}" style="white-space: normal;">
                    #{localProduct.name}
                </p:column>

                <p:column headerText="Code" sortBy="#{localProduct.code}" filterBy="#{localProduct.code}">
                    #{localProduct.code}
                </p:column>

                <p:column headerText="Category"  filterBy="#{localProduct.categoryId}" style="white-space: normal;">
                    #{localProduct.categoryId}
                </p:column>

                <p:column headerText="APrice" sortBy="#{localProduct.arrivalCost}">
                    #{util.fDouble(localProduct.arrivalCost)}
                </p:column>

                <p:column headerText="SPrice" sortBy="#{localProduct.sellingPrice}">
                    #{util.fDouble(localProduct.sellingPrice)}
                </p:column>

                <p:column headerText="Change">
                    <p:commandButton value="Change"  update=":productDetail" onclick="PF('productDialog').show();"
                                     action="#{localProductUI.editNewLocalProduct}" >
                        <f:setPropertyActionListener target="#{localProductUI.newLocalProduct}" value="#{localProduct}" />
                    </p:commandButton>
                </p:column>
            </p:dataTable>

            <p:dialog header =  "Change product" widgetVar="productDialog"  modal="true" showEffect="fade" hideEffect="fade" resizable="false">
                <p:outputPanel id="productDetail" style="text-align: center">
                    <p:panelGrid columns="2" rendered="#{not empty localProductUI.newLocalProduct}" columnClasses="label,value">

                        <h:outputText value="Name:"/>
                        <h:outputText value="#{localProductUI.newLocalProduct.name}"/>

                        <h:outputText value="Code:"/>
                        <h:outputText value="#{localProductUI.newLocalProduct.code}"/>

                        <h:outputText value="Category:"/>
                        <h:outputText value="#{localProductUI.newLocalProduct.categoryId}"/>

                        <h:outputText value="APrice:"/>
                        <h:outputText value="#{localProductUI.newLocalProduct.arrivalCost}"/>

                        <h:outputText value="SPrice:"/>
                        <h:outputText value="#{localProductUI.newLocalProduct.sellingPrice}"/>

                    </p:panelGrid>
                </p:outputPanel>
            </p:dialog>
        </h:form>
    </ui:define>
</ui:composition>

托管bean，LocalProductUI：

    public class LocalProductUI implements Serializable {

    /*
     * Consts
     */
    private static final Logger log = Logger.getLogger(LocalProductUI.class.getName());

    /*
     * EJB
     */
    @EJB private NewLocalProductEJB newLocalProductEJB;

    /*
     * Fields
     */
    private LazyDataModel<NewLocalProduct> localProductLazyModel;
    private Integer countProduct;
    private List<NewLocalProduct> selectedNewLocalProduct;
    private NewLocalProduct newLocalProduct;
    /*
     * Init
     */
    public void init() {
        this.localProductLazyModel = new LazyDataModel<NewLocalProduct>() {
            @Override
            public List<NewLocalProduct> load(int first, int pageSize, String sortField, SortOrder sortOrder, Map<String, Object> filters) {
                localProductLazyModel.setRowCount(newLocalProductEJB.countNewLocalProducts(filters));
                countProduct = newLocalProductEJB.countNewLocalProducts(filters);
                Boolean sortAsc = sortOrder == null ? null : sortOrder == SortOrder.ASCENDING;

                return newLocalProductEJB.getNewLocalProductList(first, pageSize, sortField, sortAsc, filters);
            }
            @Override
            public NewLocalProduct getRowData(String rowKey) {
                int id;
                try {
                    id = new Integer(rowKey);
                } catch (NumberFormatException e) {
                    throw new Error(e);
                }

                return newLocalProductEJB.findById(id);
            }

            @Override
            public Object getRowKey(NewLocalProduct product) {
                return product.getId();
            }

            @Override
            public void setRowIndex(int rowIndex) {
                if (rowIndex == -1 || getPageSize() == 0) {
                    super.setRowIndex(-1);
                } else {
                    super.setRowIndex(rowIndex % getPageSize());
                }
            }
    };
        localProductLazyModel.setRowCount(newLocalProductEJB.countNewLocalProducts(new HashMap<String, Object>()));
    }

    /*
     * Actions
     */
   public void saveToGlobalProduct() throws InputValidationException {
        newLocalProductEJB.doSave(selectedNewLocalProduct);
        FacesMessage msg = new FacesMessage("Number of local products added: "+ selectedNewLocalProduct.size());
       FacesContext.getCurrentInstance().addMessage(null,msg);
   }

    public void editNewLocalProduct(){
        System.err.println("Change here!");
    }

    public void removeProduct() throws InputValidationException {
        newLocalProductEJB.doRemove(selectedNewLocalProduct);
        FacesMessage msg = new FacesMessage("Number of local products deleted: "+ selectedNewLocalProduct.size());
        FacesContext.getCurrentInstance().addMessage(null,msg);
   }
    /*
     * Getters/setters
     */
    public Integer getCountProduct() { return countProduct; }
    public void setCountProduct(Integer countProduct){
        this.countProduct = countProduct;
    }

    public LazyDataModel<NewLocalProduct> getLocalProductLazyModel() { return localProductLazyModel; }
    public void setLocalProductLazyModel(LazyDataModel<NewLocalProduct> localProductLazyModel){ this.localProductLazyModel = localProductLazyModel; }

    public List<NewLocalProduct> getSelectedNewLocalProduct(){  return selectedNewLocalProduct; }
    public void setSelectedNewLocalProduct(List<NewLocalProduct> selectedNewLocalProduct){ this.selectedNewLocalProduct = selectedNewLocalProduct;  }

    public NewLocalProduct getNewLocalProduct() { return newLocalProduct; }
    public void setNewLocalProduct(NewLocalProduct newLocalProduct){ this.newLocalProduct = newLocalProduct;}
}