[英]Primefaces: ajax navigation and dataTable checkbox selection
我在我的應用程序中遇到復選框選擇問題。 我在一頁上有一個dataTable(index.xhtml)。 在同一頁面上有一個ajax按鈕,當用戶單擊它時,應用程序應導航到另一頁面(detail.xhtml)。 詳細信息頁面包含用於導航回到index.xhtml的返回按鈕。 導航有效,但是當用戶從詳細信息頁面返回時,當用戶單擊它時,不會選中dataTable中的行復選框(選擇所有行的標題復選框有效)。 當我重復場景(又名訪問詳細信息頁面並返回)時,復選框再次起作用。 在第三次重復之后,它們不再起作用(因此,每隔兩次導航它們都將不起作用)。 當我在按鈕上使用ajax =“ false”或faces-redirect = true時,一切正常。
使用Mojarra 2.10.19,PF 3.5和Glassfish 3.2.1
為簡單起見,我通過簡單的示例重新創建問題:
index.xhtml:
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:p="http://primefaces.org/ui" >
<h:head></h:head>
<h:body>
<h:form>
<p:commandButton value="Add" action="add" />
<p:dataTable id="cars" var="car" value="#{tableBean.mediumCarsModel}"
selection="#{tableBean.selectedItems}" >
<p:column selectionMode="multiple" style="width: 2%" />
<p:column headerText="Model">
#{car.model}
</p:column>
</p:dataTable>
</h:form>
</h:body>
detail.xhtml:
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:p="http://primefaces.org/ui" >
<h:head></h:head>
<h:body>
<h:form>
<p:commandButton value="Return" action="return" />
</h:form>
</h:body>
TableBean.java
@ManagedBean
@SessionScoped
public class TableBean {
private final static String[] manufacturers;
static {
manufacturers = new String[10];
manufacturers[0] = "Mercedes";
manufacturers[1] = "BMW";
manufacturers[2] = "Volvo";
manufacturers[3] = "Audi";
manufacturers[4] = "Renault";
manufacturers[5] = "Opel";
manufacturers[6] = "Volkswagen";
manufacturers[7] = "Chrysler";
manufacturers[8] = "Ferrari";
manufacturers[9] = "Ford";
}
private List<Car> carsSmall;
private CarDataModel mediumCarsModel;
private List<Car> selectedItems;
public TableBean() {
carsSmall = new ArrayList<Car>();
populateRandomCars(carsSmall, 5);
mediumCarsModel = new CarDataModel(carsSmall);
}
private void populateRandomCars(List<Car> list, int size) {
for (int i = 0; i < size; i++) {
list.add(new Car(manufacturers[i]));
}
}
public List<Car> getSelectedItems() {
return selectedItems;
}
public void setSelectedItems(List<Car> selectedItems) {
this.selectedItems = selectedItems;
}
public CarDataModel getMediumCarsModel() {
return mediumCarsModel;
}
}
CarDataModel.java
public class CarDataModel extends ListDataModel<Car> implements SelectableDataModel<Car> {
public CarDataModel(List<Car> data) {
super(data);
}
@Override
public Car getRowData(String rowKey) {
List<Car> cars = (List<Car>) getWrappedData();
for(Car car : cars) {
if(car.getModel().equals(rowKey)){
return car;
}
}
return null;
}
@Override
public Object getRowKey(Car car) {
return car.getModel();
}
}
汽車.java
public class Car implements Serializable {
private String model;
public String getModel() {
return model;
}
public void setModel(String model) {
this.model = model;
}
public Car(String model) {
this.model = model;
}
}
faces-config.xml
<navigation-rule>
<from-view-id>/index.xhtml</from-view-id>
<navigation-case>
<from-outcome>add</from-outcome>
<to-view-id>/detail.xhtml</to-view-id>
</navigation-case>
</navigation-rule>
<navigation-rule>
<from-view-id>/detail.xhtml</from-view-id>
<navigation-case>
<from-outcome>return</from-outcome>
<to-view-id>/index.xhtml</to-view-id>
</navigation-case>
</navigation-rule>
您可能需要從faces-config.xml中刪除導航規則 ,才能嘗試以下操作...
index.xhtml
<p:commandButton value="Add" action="#{tableBean.redirectToDetail}" />
detail.xhtml
<p:commandButton value="Return" action="#{tableBean.redirectToIndex}" />
TableBean.java
@ManagedBean(name = "tableBean")
...
...
...
public String redirectToDetail() {
return "detail?faces-redirect=true";
}
public String redirectToIndex() {
return "index?faces-redirect=true";
}
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