Jsf 2 在primefaces数据表中启用选择时无法显示对话框内容
我尝试使用showcase中显示的方法，单击其中一列中的命令按钮，显示包含输入文本区域的对话框弹出窗口。在我的情况下，datatable是一个多选，启用了datamodel。只有当datatable具有相同的属性时，才会显示带有文本区域的弹出窗口功能如showcase中所示，但当实现多个选择（无论是否实现datamodel）时，文本区域中都不会显示任何内容。当我检查一行并单击命令按钮时，会出现以下异常。当我直接单击命令按钮时，不会引发异常Jsf 2 在primefaces数据表中启用选择时无法显示对话框内容,jsf-2,primefaces,datatable,Jsf 2,Primefaces,Datatable,我尝试使用showcase中显示的方法，单击其中一列中的命令按钮，显示包含输入文本区域的对话框弹出窗口。在我的情况下，datatable是一个多选，启用了datamodel。只有当datatable具有相同的属性时，才会显示带有文本区域的弹出窗口功能如showcase中所示，但当实现多个选择（无论是否实现datamodel）时，文本区域中都不会显示任何内容。当我检查一行并单击命令按钮时，会出现以下异常。当我直接单击命令按钮时，不会引发异常 javax.faces.FacesException
javax.faces.FacesException
at com.sun.faces.lifecycle.ApplyRequestValuesPhase.execute(ApplyRequestValuesPhase.java:86)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:508)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.NullPointerException
at com.gaic.datamodel.CarDataModel.getRowData(CarDataModel.java:27)
at com.gaic.datamodel.CarDataModel.getRowData(CarDataModel.java:1)
at org.primefaces.component.datatable.DataTable.getRowData(DataTable.java:953)
at org.primefaces.component.datatable.feature.SelectionFeature.decodeMultipleSelection(SelectionFeature.java:71)
at org.primefaces.component.datatable.feature.SelectionFeature.decode(SelectionFeature.java:40)
at org.primefaces.component.datatable.DataTableRenderer.decode(DataTableRenderer.java:57)
at javax.faces.component.UIComponentBase.decode(UIComponentBase.java:796)
at org.primefaces.component.api.UIData.processDecodes(UIData.java:228)
at javax.faces.component.UIForm.processDecodes(UIForm.java:216)
at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1048)
at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1048)
at javax.faces.component.UIViewRoot.processDecodes(UIViewRoot.java:926)
at com.sun.faces.lifecycle.ApplyRequestValuesPhase.execute(ApplyRequestValuesPhase.java:78)
... 15 more
<h:body>
<h:form id="form">
<p:growl id="msgs" showDetail="true" />
<p:dataTable id="cars" var="car" value="#{tableBean.mediumCarsModel}"
selection="#{tableBean.selectedCars}">
<p:column selectionMode="multiple" style="width:2%" />
<p:column headerText="Model" style="width:24%">
<h:outputText value="#{car.model}" />
</p:column>
<p:column headerText="Year" style="width:24%">
<h:outputText value="#{car.year}" />
</p:column>
<p:column headerText="Manufacturer" style="width:24%">
<h:outputText value="#{car.manufacturer}" />
</p:column>
<p:column headerText="Color" style="width:24%">
<h:outputText value="#{car.color}" />
</p:column>
<p:column style="width:4%">
<p:commandButton id="selectButton" update=":form:display"
oncomplete="carDialog.show()" icon="ui-icon-search" title="View">
<f:setPropertyActionListener value="#{car}"
target="#{tableBean.selectedCar}" />
</p:commandButton>
</p:column>
</p:dataTable>
<p:dialog header="Car Detail" widgetVar="carDialog" resizable="false"
id="carDlg" showEffect="fade" hideEffect="explode" modal="true">
<p:dataList id="display" value="#{tableBean.selectedCar}"
var="selectedWorkSpaceItem"
style="border: 0px solid gray;padding-bottom:1px;">
<p:inputTextarea value="#{selectedWorkSpaceItem.color}">
</p:inputTextarea>
</p:dataList>
</p:dialog>
</h:form>
public class TableBean implements Serializable {
private final static String[] colors;
private final static String[] manufacturers;
static {
colors = new String[10];
colors[0] = "Black";
colors[1] = "White";
colors[2] = "Green";
colors[3] = "Red";
colors[4] = "Blue";
colors[5] = "Orange";
colors[6] = "Silver";
colors[7] = "Yellow";
colors[8] = "Brown";
colors[9] = "Maroon";
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> cars;
private Car selectedCar;
private CarDataModel mediumCarsModel;
private Car[] selectedCars;
public TableBean() {
cars = new ArrayList<Car>();
populateRandomCars(cars, 50);
mediumCarsModel = new CarDataModel(cars);
}
private void populateRandomCars(List<Car> list, int size) {
for (int i = 0 ; i < size ; i++)
list.add(new Car(getRandomModel(), getRandomYear(), getRandomManufacturer(), getRandomColor()));
}
public Car getSelectedCar() {
return selectedCar;
}
public void setSelectedCar(Car selectedCar) {
this.selectedCar = selectedCar;
}
public List<Car> getCars() {
return cars;
}
private int getRandomYear() {
return (int) (Math.random() * 50 + 1960);
}
private String getRandomColor() {
return colors[(int) (Math.random() * 10)];
}
private String getRandomManufacturer() {
return manufacturers[(int) (Math.random() * 10)];
}
private String getRandomModel() {
return UUID.randomUUID().toString().substring(0, 8);
}
public CarDataModel getMediumCarsModel() {
if(mediumCarsModel==null) {
System.out.println("yes it is null!!!!!!");
mediumCarsModel = new CarDataModel(cars);
}
return mediumCarsModel;
}
public void setMediumCarsModel(CarDataModel mediumCarsModel) {
this.mediumCarsModel = mediumCarsModel;
}
public Car[] getSelectedCars() {
return selectedCars;
}
public void setSelectedCars(Car[] selectedCars) {
this.selectedCars = selectedCars;
}
}
公共类TableBean实现了可序列化{
私有最终静态字符串[]颜色；
私有最终静态字符串[]制造商；
静止的{
颜色=新字符串[10]；
颜色[0]=“黑色”；
颜色[1]=“白色”；
颜色[2]=“绿色”；
颜色[3]=“红色”；
颜色[4]=“蓝色”；
颜色[5]=“橙色”；
颜色[6]=“银色”；
颜色[7]=“黄色”；
颜色[8]=“棕色”；
颜色[9]=“栗色”；
制造商=新字符串[10]；
制造商[0]=“梅赛德斯”；
制造商[1]=“宝马”；
制造商[2]=“沃尔沃”；
制造商[3]=“奥迪”；
制造商[4]=“雷诺”；
制造商[5]=“欧宝”；
制造商[6]=“大众”；
制造商[7]=“克莱斯勒”；
制造商[8]=“法拉利”；
制造商[9]=“福特”；
}
私家车名单；
私家车选择私家车；
私人卡数据模型mediumCarsModel；
私家车[]选定车辆；
公共TableBean（）{
cars=新阵列列表（）；
人口分布（cars，50）；
mediumCarsModel=新卡数据模型（汽车）；
}
私有void populateRandomCars（列表，整数大小）{
对于（int i=0；i有什么方法可以在对话框文本区域中显示内容吗？您是否使用@annotations来标记bean？还是
faces config.xml@ManagedBean@ViewScoped@ManagedBean
@视域
公共类TableBean实现了可序列化{
私有最终静态字符串[]颜色；
私有最终静态字符串[]制造商；
静止的{
颜色=新字符串[10]；
颜色[0]=“黑色”；
颜色[1]=“白色”；
颜色[2]=“绿色”；
颜色[3]=“红色”；
颜色[4]=“蓝色”；
颜色[5]=“橙色”；
颜色[6]=“银色”；
颜色[7]=“黄色”；
颜色[8]=“棕色”；
颜色[9]=“栗色”；
制造商=新字符串[10]；
制造商[0]=“梅赛德斯”；
制造商[1]=“宝马”；
制造商[2]=“沃尔沃”；
制造商[3]=“奥迪”；
制造商[4]=“雷诺”；
制造商[5]=“欧宝”；
制造商[6]=“大众”；
制造商[7]=“克莱斯勒”；
制造商[8]=“法拉利”；
制造商[9]=“福特”；
}
私家车名单；
私家车选择私家车；
私人卡数据模型mediumCarsModel；
私家车[]选定车辆；
公共TableBean（）{
cars=新阵列列表（）；
人口分布（cars，50）；
mediumCarsModel=新卡数据模型（汽车）；
}
私有void populateRandomCars（列表，整数大小）{
对于（int i=0；i@ManagedBean
@ViewScoped
public class TableBean implements Serializable {
private final static String[] colors;
private final static String[] manufacturers;
static {
colors = new String[10];
colors[0] = "Black";
colors[1] = "White";
colors[2] = "Green";
colors[3] = "Red";
colors[4] = "Blue";
colors[5] = "Orange";
colors[6] = "Silver";
colors[7] = "Yellow";
colors[8] = "Brown";
colors[9] = "Maroon";
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> cars;
private Car selectedCar;
private CarDataModel mediumCarsModel;
private Car[] selectedCars;
public TableBean() {
cars = new ArrayList<Car>();
populateRandomCars(cars, 50);
mediumCarsModel = new CarDataModel(cars);
}
private void populateRandomCars(List<Car> list, int size) {
for (int i = 0 ; i < size ; i++)
list.add(new Car(getRandomModel(), getRandomYear(), getRandomManufacturer(), getRandomColor()));
}
public Car getSelectedCar() {
return selectedCar;
}
public void setSelectedCar(Car selectedCar) {
this.selectedCar = selectedCar;
}
public List<Car> getCars() {
return cars;
}
private int getRandomYear() {
return (int) (Math.random() * 50 + 1960);
}
private String getRandomColor() {
return colors[(int) (Math.random() * 10)];
}
private String getRandomManufacturer() {
return manufacturers[(int) (Math.random() * 10)];
}
private String getRandomModel() {
return UUID.randomUUID().toString().substring(0, 8);
}
public CarDataModel getMediumCarsModel() {
if(mediumCarsModel==null) {
System.out.println("yes it is null!!!!!!");
mediumCarsModel = new CarDataModel(cars);
}
return mediumCarsModel;
}
public void setMediumCarsModel(CarDataModel mediumCarsModel) {
this.mediumCarsModel = mediumCarsModel;
}
public Car[] getSelectedCars() {
return selectedCars;
}
public void setSelectedCars(Car[] selectedCars) {
this.selectedCars = selectedCars;
}
}
<p:dataTable id="cars" var="car" rowKey="#{car.model}" value="#{tableBean.mediumCarsModel}"
selection="#{tableBean.selectedCars}">
<f:facet name="header">
<p:commandButton value="Click" onclick="PF('carDialog').show();" update=":form:display" />
</f:facet>