我已将PrimeFaces从5.1决赛升级到5.2决赛（社区发布）。我有一个<p:dataTable>延迟加载如下（一个最小的例子来重现问题仅用于纯测试目的）。
<p:dataTable var="row"
value="#{testManagedBean}"
lazy="true"
editable="true"
rowKey="#{row.fruitId}"
selection="#{testManagedBean.selectedValues}"
rows="50">
<p:column selectionMode="multiple"/>
<p:ajax event="rowEdit" listener="#{testManagedBean.onRowEdit}"/>
<p:column headerText="Id">
<h:outputText value="#{row.fruitId}"/>
</p:column>
<p:column headerText="Fruit Name">
<p:cellEditor>
<f:facet name="output">
<h:outputText value="#{row.fruitName}"/>
</f:facet>
<f:facet name="input">
<p:inputText value="#{row.fruitName}"/>
</f:facet>
</p:cellEditor>
</p:column>
<p:column headerText="Price">
<p:cellEditor>
<f:facet name="output">
<h:outputText value="#{row.price}"/>
</f:facet>
<f:facet name="input">
<p:inputText value="#{row.price}"/>
</f:facet>
</p:cellEditor>
</p:column>
<p:column headerText="Edit">
<p:rowEditor/>
</p:column>
</p:dataTable>
相应的托管bean：
@Named
@ViewScoped
public class TestManagedBean extends LazyDataModel<Fruit> implements Serializable {
private List<Fruit> selectedValues; // Getter & setter.
private static final long serialVersionUID = 1L;
public TestManagedBean() {}
private List<Fruit> init() {
List<Fruit> fruits = new ArrayList<Fruit>();
Fruit fruit = new Fruit();
fruit.setFruitId(1);
fruit.setFruitName("Mango");
fruit.setPrice(500D);
fruits.add(fruit);
fruit = new Fruit();
fruit.setFruitId(2);
fruit.setFruitName("Guava");
fruit.setPrice(300D);
fruits.add(fruit);
fruit = new Fruit();
fruit.setFruitId(3);
fruit.setFruitName("Apple");
fruit.setPrice(600D);
fruits.add(fruit);
return fruits;
}
@Override
public List<Fruit> load(int first, int pageSize, String sortField, SortOrder sortOrder, Map<String, Object> filters) {
List<Fruit> fruits = init();
setRowCount(fruits.size());
return fruits;
}
public void onRowEdit(RowEditEvent event) {
System.out.println("id : "+((Fruit)event.getObject()).getFruitId());
}
}
编辑onRowEdit()方法时应该调用绑定的方法，
<p:ajax event="rowEdit" listener="#{testManagedBean.onRowEdit}"/>
如果某一行处于编辑模式并且单击了以刻度标记的更新链接，则会引发以下异常。
Info: java.lang.UnsupportedOperationException: getRowData(String rowKey) must be implemented when basic rowKey algorithm is not used.
java.lang.UnsupportedOperationException: getRowData(String rowKey) must be implemented when basic rowKey algorithm is not used.
at org.primefaces.model.LazyDataModel.getRowData(LazyDataModel.java:95)
at org.primefaces.component.datatable.DataTable.getRowData(DataTable.java:1214)
at org.primefaces.component.datatable.feature.SelectionFeature.decodeMultipleSelection(SelectionFeature.java:90)
at org.primefaces.component.datatable.feature.SelectionFeature.decode(SelectionFeature.java:48)
at org.primefaces.component.datatable.DataTableRenderer.decode(DataTableRenderer.java:62)
at javax.faces.component.UIComponentBase.decode(UIComponentBase.java:834)
at org.primefaces.component.api.UIData.processDecodes(UIData.java:281)
at com.sun.faces.context.PartialViewContextImpl$PhaseAwareVisitCallback.visit(PartialViewContextImpl.java:573)
at com.sun.faces.component.visit.PartialVisitContext.invokeVisitCallback(PartialVisitContext.java:183)
at org.primefaces.component.api.UIData.visitTree(UIData.java:821)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:1690)
at javax.faces.component.UIForm.visitTree(UIForm.java:380)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:1690)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:1690)
at com.sun.faces.context.PartialViewContextImpl.processComponents(PartialViewContextImpl.java:403)
at com.sun.faces.context.PartialViewContextImpl.processPartial(PartialViewContextImpl.java:266)
at org.primefaces.context.PrimePartialViewContext.processPartial(PrimePartialViewContext.java:60)
at javax.faces.component.UIViewRoot.processDecodes(UIViewRoot.java:930)
at com.sun.faces.lifecycle.ApplyRequestValuesPhase.execute(ApplyRequestValuesPhase.java:78)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:198)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:660)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:318)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:415)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:282)
at com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:459)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:167)
at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:201)
at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:175)
at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:235)
at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:284)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:201)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:133)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:112)
at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:561)
at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:56)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:565)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:545)
at java.lang.Thread.run(Thread.java:745)
Warning: java.lang.UnsupportedOperationException: getRowData(String rowKey) must be implemented when basic rowKey algorithm is not used.
javax.faces.FacesException: java.lang.UnsupportedOperationException: getRowData(String rowKey) must be implemented when basic rowKey algorithm is not used.
at com.sun.faces.context.PartialViewContextImpl.processPartial(PartialViewContextImpl.java:273)
at org.primefaces.context.PrimePartialViewContext.processPartial(PrimePartialViewContext.java:60)
at javax.faces.component.UIViewRoot.processDecodes(UIViewRoot.java:930)
at com.sun.faces.lifecycle.ApplyRequestValuesPhase.execute(ApplyRequestValuesPhase.java:78)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:198)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:660)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:318)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:415)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:282)
at com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:459)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:167)
at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:201)
at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:175)
at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:235)
at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:284)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:201)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:133)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:112)
at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:561)
at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:56)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:565)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:545)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.UnsupportedOperationException: getRowData(String rowKey) must be implemented when basic rowKey algorithm is not used.
at org.primefaces.model.LazyDataModel.getRowData(LazyDataModel.java:95)
at org.primefaces.component.datatable.DataTable.getRowData(DataTable.java:1214)
at org.primefaces.component.datatable.feature.SelectionFeature.decodeMultipleSelection(SelectionFeature.java:90)
at org.primefaces.component.datatable.feature.SelectionFeature.decode(SelectionFeature.java:48)
at org.primefaces.component.datatable.DataTableRenderer.decode(DataTableRenderer.java:62)
at javax.faces.component.UIComponentBase.decode(UIComponentBase.java:834)
at org.primefaces.component.api.UIData.processDecodes(UIData.java:281)
at com.sun.faces.context.PartialViewContextImpl$PhaseAwareVisitCallback.visit(PartialViewContextImpl.java:573)
at com.sun.faces.component.visit.PartialVisitContext.invokeVisitCallback(PartialVisitContext.java:183)
at org.primefaces.component.api.UIData.visitTree(UIData.java:821)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:1690)
at javax.faces.component.UIForm.visitTree(UIForm.java:380)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:1690)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:1690)
at com.sun.faces.context.PartialViewContextImpl.processComponents(PartialViewContextImpl.java:403)
at com.sun.faces.context.PartialViewContextImpl.processPartial(PartialViewContextImpl.java:266)
... 34 more
Severe: java.lang.UnsupportedOperationException: getRowData(String rowKey) must be implemented when basic rowKey algorithm is not used.
at org.primefaces.model.LazyDataModel.getRowData(LazyDataModel.java:95)
at org.primefaces.component.datatable.DataTable.getRowData(DataTable.java:1214)
at org.primefaces.component.datatable.feature.SelectionFeature.decodeMultipleSelection(SelectionFeature.java:90)
at org.primefaces.component.datatable.feature.SelectionFeature.decode(SelectionFeature.java:48)
at org.primefaces.component.datatable.DataTableRenderer.decode(DataTableRenderer.java:62)
at javax.faces.component.UIComponentBase.decode(UIComponentBase.java:834)
at org.primefaces.component.api.UIData.processDecodes(UIData.java:281)
at com.sun.faces.context.PartialViewContextImpl$PhaseAwareVisitCallback.visit(PartialViewContextImpl.java:573)
at com.sun.faces.component.visit.PartialVisitContext.invokeVisitCallback(PartialVisitContext.java:183)
at org.primefaces.component.api.UIData.visitTree(UIData.java:821)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:1690)
at javax.faces.component.UIForm.visitTree(UIForm.java:380)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:1690)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:1690)
at com.sun.faces.context.PartialViewContextImpl.processComponents(PartialViewContextImpl.java:403)
at com.sun.faces.context.PartialViewContextImpl.processPartial(PartialViewContextImpl.java:266)
at org.primefaces.context.PrimePartialViewContext.processPartial(PrimePartialViewContext.java:60)
at javax.faces.component.UIViewRoot.processDecodes(UIViewRoot.java:930)
at com.sun.faces.lifecycle.ApplyRequestValuesPhase.execute(ApplyRequestValuesPhase.java:78)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:198)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:660)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:318)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:415)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:282)
at com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:459)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:167)
at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:201)
at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:175)
at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:235)
at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:284)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:201)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:133)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:112)
at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:561)
at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:56)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:565)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:545)
at java.lang.Thread.run(Thread.java:745)
这不应该发生，因为rowKey="#{row.fruitId}"与给定的<p:dataTable>一起使用。
仅当删除rowKey属性并且在关联的托管bean中实现getRowKey()和getRowData()方法时，异常才会消失，如下所示。
@Override
public Object getRowKey(Fruit fruit) {
return fruit != null ? fruit.getFruitId() : null;
}
@Override
public Fruit getRowData(String rowKey) {
List<Fruit> fruits = (List<Fruit>) getWrappedData();
Integer value = Integer.valueOf(rowKey);
for (Fruit fruit : fruits) {
if (fruit.getFruitId().equals(value)) {
return fruit;
}
}
return null;
}
在PrimeFaces的最新版本（5.2 final）中是否必须使用以前版本的PrimeFaces（5.1 final）中不需要？
在Mojarra 2.3.0-m02上测试。我认为与此版本的Mojarra不应该有任何关联。
答案 0 :(得分：7)
正如指向PrimeFaces社区论坛的this链接所述，
我们按设计更改了该部分导致
rowKey属性处理 使用LazyDataModel不正确。
如果问题所示，只要使用getRowKey()，就需要在关联的托管bean中实现这两个方法getRowData()和LazyDataModel<T>。
从PrimeFaces User Guide (PDF) - （5.1（第164页）和5.2（第166页））：
延迟加载是一种有效处理大型数据集的方法， 常规的基于ajax的分页通过仅渲染特定的方式来工作 页面但仍需要将所有数据加载到内存中。懒 加载数据表同样也可以呈现特定页面 将页面数据加载到内存而不是整个数据集。为了 实现这个，你需要绑定一个
org.primefaces.model.LazyDataModel作为值和实现负载 方法并启用延迟选项。 还需要实施 如果您启用了选择，则getRowData和getRowKey。
当rowKey被禁用时，可以使用属性lazy - 设置为false（默认）并启用行选择。
从PrimeFaces User Guide (PDF) - （5.1（第159页）和5.2（第161页））：
RowKey应该是您数据模型中的唯一标识符并由其使用 数据表以查找选定的行。您可以通过定义此键 使用
rowKey属性或绑定数据模型 实现org.primefaces.model.SelectableDataModel。
，例如，
<p:dataTable var="car"
value="#{carBean.cars}"
selection="#{carBean.selectedCars}"
rowKey="#{car.id}">
<p:column selectionMode="multiple"/>
<!--columns-->
</p:dataTable>