Question

我正在使用Primefaces 3.5和JSF 2.1。我需要针对每一行显示复选框以将其标记为删除，例如this ShowCase。那个ShowCase使用ListDataModel，我不是。我正在使用LazyDataModel来启用排序（我不确定是否可以使用ListDataModel进行排序。是否可以？）。

通过我的尝试，会显示复选框，但无法检查它们。

JSF页面：

<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:h="http://java.sun.com/jsf/html"
      xmlns:f="http://java.sun.com/jsf/core"
      xmlns:p="http://primefaces.org/ui">
    <h:head>
        <title>State</title>
    </h:head>
    <h:body>
        <h:form id="form">
            <p:dataTable var="state" value="#{stateManagedBean}" id="stateTable" lazy="true" paginator="true" rows="10" rowKey="#{state.stateId}"  rowsPerPageTemplate="5,10,15" selectionMode="multiple" selection="#{stateManagedBean.selectedStates}">

                 <f:facet name="header">  
                    Data
                </f:facet>  

                <p:ajax event="rowSelectCheckbox" listener="#{stateManagedBean.check}"/>
                <p:column selectionMode="multiple" style="width:2%" /> 

                <p:column headerText="id" sortBy="#{state.stateId}" filterBy="#{state.stateId}">
                    <h:outputText value="#{state.stateId}" />
                </p:column>

                <p:column headerText="State" sortBy="#{state.stateName}" filterBy="#{state.stateName}">
                    <h:outputText value="#{state.stateName}" />
                </p:column>

                <p:column headerText="Country" sortBy="#{state.countryId}" filterBy="#{state.countryId.countryName}">
                    <h:outputText value="#{state.countryId.countryName}" />
                </p:column>

                <f:facet name="footer">
                    <p:commandButton id="multiViewButton" value="View" icon="ui-icon-search" update=":form:displayMulti" oncomplete="multiCarDialog.show()"/>  
                </f:facet>
            </p:dataTable>

            <p:dialog id="multiDialog" header="State Details" resizable="false" widgetVar="multiCarDialog" height="300" showEffect="fade" hideEffect="explode">   
                <p:dataList id="displayMulti" value="#{stateManagedBean.selectedStates}" var="selectedState">  
                    Id: #{selectedState.stateId}, State: #{selectedState.stateName}  
                </p:dataList>  
            </p:dialog>
        </h:form>
    </h:body>
</html>

JSF管理的bean：

package admin.mangedbean;

import admin.dao.service.StateService;
import java.util.List;
import java.util.Map;
import org.springframework.context.annotation.Scope;
import model.StateTable;
import org.primefaces.event.SelectEvent;
import org.primefaces.model.LazyDataModel;
import org.primefaces.model.SelectableDataModel;
import org.primefaces.model.SortOrder;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;

@Controller
@Scope("request")
public final class StateManagedBean extends LazyDataModel<StateTable> //implements SelectableDataModel<StateTable>
{
    @Autowired
    private final StateService stateService=null;
    private List<StateTable>list;
    private StateTable[] selectedStates;

    public StateManagedBean()
    {

    }

    @Override
    public StateTable getRowData(String rowKey)
    {
        for(StateTable stateTable:list)
        {
            if(stateTable.getStateId().toString().equals(rowKey))
            {
                return stateTable;
            }
        }
        return null;
    }    

    @Override
    public Object getRowKey(StateTable stateTable)
    {
        return stateTable.getStateId();
    }        

    public StateTable[] getSelectedStates()
    {
        return selectedStates;
    }

    public void setSelectedStates(StateTable[] selectedStates)
    {
        this.selectedStates = selectedStates;
    }

    @Override
    public List<StateTable> load(int first, int pageSize, String sortField, SortOrder sortOrder, Map<String, String> filters)
    {
        setRowCount(stateService.rowCount().intValue());
        return stateService.getList(first, pageSize, sortOrder, sortField);
    }

    public void check(SelectEvent event)
    {
        System.out.println("checked");
    }
}

我希望它可以使用这个AJAX事件，

<p:ajax event="rowSelectCheckbox" listener="#{stateManagedBean.check}"/>

哪个侦听器绑定到托管bean内的check()方法。单击复选框时无法选中复选框。在我的情况下显示的对话框是完全没有必要的，因为应该通过选择要删除的相应行的复选框来标记要删除的行。是否可以使用LazyDataModel？

使用Primefaces的LazyDataModel选择复选框

0 个答案: