我正在使用 primefaces 3.3 和 jsf 2.0。我在删除惰性数据模型中的记录时遇到问题。由于排序和过滤在数据表中无法正常工作，我不得不使用惰性数据模型概念。现在保存（通过向导）、编辑、排序和过滤工作正常。当我尝试从数据表中删除记录时，出现对话框，当我单击是（命令按钮）删除记录时，而不是调用 bean 方法控制转到惰性数据模型的加载方法。没有调用 clientUitility.java(managedbean) 的 deleterecord。任何人都可以指导我通过传递客户端对象从数据表中删除记录这是代码片段
clientMaster.xhtml
<h:form id="cm">
<p:growl life="5000" showDetail="true" showSummary="true" id="mymessage" />
<p:wizard widgetVar="wiz" flowListener="#{clientUitility.onFlowProcess}" showNavBar="true" >
<p:tab id="personal" title="Personal" >
.....
.....// tab and columns
.....
<p:commandButton id="addClient" immediate="true" value="Add Client" actionListener="#{clientUitility.save}" oncomplete="wiz.loadStep (wiz.cfg.steps [0], true)" update=":fce:clientList" > <!-- update="@parent,:cm:clientList" -->
</p:commandButton>
</p:column>
</p:row>
</p:panelGrid>
</p:panel>
</p:tab>
</p:wizard>
</h:form>
<ui:include id="ce" src="ClientEditDatatable.xhtml"/>
ClientEditdatatable.xhtml
<h:form id="fce">
<p:dataTable var="client" value="#{clientUitility.lazyModel}" id="clientList" editable="true" widgetVar="clientTable" rowKey="#{client.clientID}"
paginatorTemplate="{RowsPerPageDropdown} {FirstPageLink} {PreviousPageLink} {CurrentPageReport} {NextPageLink} {LastPageLink}"
paginator="true" rows="10" rowsPerPageTemplate="5,10,15" lazy="true">
<p:column headerText="First Name" style="width:100px" filterBy="#{client.firstName}" sortBy="#{client.firstName}" >
<p:cellEditor>
<f:facet name="output">
<h:outputText value="#{client.firstName}" />
</f:facet>
<f:facet name="input">
<p:inputText id="dtFirstName" value="#{client.firstName}" style="width:100%" label="FirstName" onkeyup="valid(this)" onblur="convertUpper(this.id)" >
<f:validateLength for="dtFirstName" maximum="100" minimum="3"/>
</p:inputText>
</f:facet>
</p:cellEditor>
</p:column>
.....
..... // code of column
.....
<p:ajax event="rowEdit" listener="#{clientUitility.editRowListner}" update=":cm:mymessage"/>
<p:column headerText="Delete" style="width:50px">
<p:commandButton id="deleteClient" value="Delete" onclick="confirmDeleteClient.show()" title="Delete this Client" styleClass="ui-icon-trash">
<f:setPropertyActionListener target="#{client}" value="#{clientUitility.client}"/>
</p:commandButton>
</p:column>
</p:dataTable>
<p:confirmDialog message="Delete client?" severity="alert" widgetVar="confirmDeleteClient" visible="false" appendToBody="true" >
<p:commandButton value="Yes" update="clientList" immediate="true" oncomplete="confirmDeleteClient.hide()" actionListener="#{clientUitility.deleteRecord}" >
<f:setPropertyActionListener target="#{client}" value="#{client}"
</p:commandButton>
<p:commandButton value="No" onclick="confirmDeleteClient.hide()" type="button" />
</p:confirmDialog>
<br/>
LazyClientDataModel.java
public class LazyClientDataModel extends LazyDataModel<ClientBean> {
private List<ClientBean> datasource;
public LazyClientDataModel(List<ClientBean> datasource) {
this.datasource = datasource;
}
@Override
public ClientBean getRowData(String rowKey) {
for(ClientBean client : datasource) {
if(Integer.toString(client.getclientID()).equals(rowKey))
return client;
}
return null;
}
@Override
public Object getRowKey(ClientBean client) {
return Integer.toString(client.getclientID());
}
@Override
public List<ClientBean> load(int first, int pageSize, String sortField, SortOrder sortOrder, Map<String,String> filters) {
List<ClientBean> data = new ArrayList<ClientBean>();
//filter
for(ClientBean client : datasource) {
boolean match = true;
for(Iterator<String> it = filters.keySet().iterator(); it.hasNext();) {
try {
String filterProperty = it.next();
String filterValue = filters.get(filterProperty);
String fieldValue = String.valueOf(client.getClass().getField(filterProperty).get(client));
if(filterValue == null || fieldValue.toLowerCase().startsWith(filterValue.toLowerCase())) {
match = true;
} else {
match = false;
break;
}
} catch(Exception e) {
match = false;
}
}
if(match) {
data.add(client);
}
}
//sort
if(sortField != null) {
Collections.sort(data, new LazySorter(sortField, sortOrder));
}
//rowCount
int dataSize = data.size();
this.setRowCount(dataSize);
//paginate
if(dataSize > pageSize) {
try {
return data.subList(first, first + pageSize);
}
catch(IndexOutOfBoundsException e) {
return data.subList(first, first + (dataSize % pageSize));
}
}else {
return data;
}
}
}
clientUitility.java（托管bean）
public class ClientUitility {
private LazyDataModel<ClientBean> lazyModel;
private ClientBean client = new ClientBean();
private List<ClientBean> clientAll;// = new ArrayList<ClientBean>();
/** Creates a new instance of ClientUitility */
public ClientUitility() {
client = new ClientBean();
clientAll = new ArrayList<ClientBean>();
//int userID = Integer.parseInt(FacesContext.getCurrentInstance().getExternalContext().getSessionMap().get("USER_ID").toString());
clientAll = ClientService.GenerateClientList(1);
lazyModel = new LazyClientDataModel(clientAll);
}
// setter and getter of client
// getter for lazymodel
public void deleteRecord(ActionEvent actionEvent) {
try {
System.out.println("Delete record Called....");
int ClientID = client.getclientID();
ClientService.DeleteClient(client);
client = new ClientBean();
clientAll = ClientService.GenerateClientList(1);
lazyModel = new LazyClientDataModel(clientAll);
FacesMessage msg = new FacesMessage("Client Deleted", "");
FacesContext.getCurrentInstance().addMessage(null, msg);
} catch (Exception e) {
e.printStackTrace();
}
public void save(ActionEvent actionEvent) {
System.out.println("Save record Called....");
ClientService.AddClient(client);
client = new ClientBean();
clientAll = ClientService.GenerateClientList(1);
lazyModel = new LazyClientDataModel(clientAll);
FacesMessage msg = new FacesMessage("Client Created", "");
FacesContext.getCurrentInstance().addMessage(null, msg);
}
}