问题描述
我在下面有一个素面数据表:
<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}" >
我需要实现一个延迟加载, 我按照文档创建了下面的类:
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 中调用这个类
@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、tomcat 9、jdk 1.8、netbeans 12.2、数据库derby
解决方法
我通过更新 primefaces 版本解决了这个问题,从 5.3 到 10.0