Primefaces 惰性数据表无法识别方法加载

Question

我在下面有一个 primefaces 数据表：

<p:dataTable id="table_lista_grupos" value="#{grupoClasseBean.gldm}" var="item" 
   widgetVar="lista_grupos" rowKey="#{item.codigo}" paginator="true" rows="10" 
   styleClass="panelGrande" paginatorPosition="bottom" sortMode="multiple" 
   filteredValue="#{grupoClasseBean.listaGruposFiltrados}" rowHover="true" 
   resizeMode="expand" selectionMode="single" lazy="true" rowsPerPageTemplate="10,20,30"
   paginatorTemplate="{CurrentPageReport}  {FirstPageLink} {PreviousPageLink} {PageLinks} {NextPageLink} {LastPageLink} {RowsPerPageDropdown}" >

我需要实现延迟加载，我按照文档进行了操作，并在下面创建了 class：

public class GrupoLazyDataModel extends LazyDataModel<Grupo>{
    
    private static final long serialVersionUID = 1L;
    
    private List<Grupo> datasource;
    
    public GrupoLazyDataModel(List<Grupo> datasource) {
        this.datasource = datasource;
        setRowCount(datasource.size());
    }

    @Override
    public List<Grupo> load(int first, int pageSize, String sortField, SortOrder sortOrder, Map<String, Object> filters) {
        return new ArrayList<Grupo>();
    }
}

我在我的 ManagedBean

中调用这个 class

@Named
@RequestScoped
public class GrupoClasseBean implements Serializable {
    
    private LazyDataModel<Grupo> gldm;

    @PostConstruct
    public void init() {
        Map<TipoParametro, Object> params = new HashMap<>();
        params.put(TipoParametro.TIPO, tipo);
        listaGrupos = (List<Grupo>) rule.list(0, 100, params);
        gldm = new GrupoLazyDataModel(listaGrupos);        
    }
}

但是当我执行我的软件时，我收到错误消息：

 Receiver class br.gov.sp.sefaz.siafem.cm.ui.grpcls.GrupoLazyDataModel does not define or inherit an implementation of the resolved method abstract load(IILjava/util/Map;Ljava/util/Map;)Ljava/util/List; of abstract class org.primefaces.model.LazyDataModel.

我的环境是primefaces 5.3，tomcat9，jdk1.8，netbeans 12.2，数据库derby

Answer 1

我解决了这个问题，更新了 primefaces 版本，从 5.3 到 10.0

Primefaces 惰性数据表无法识别方法加载

Primefaces lazy datatable does not recognize method load

primefaces