我是 JSF 的新手。我正在尝试使用 Primefaces 官方网站上的向导组件，但我遇到了一个问题：当移动到下一个选项卡时，前一个选项卡的信息会被删除。我使用了网站上的代码，除了 User bean。当我进行调试时，我看到每次按下 Next 按钮时，都会调用每个字段的 setter，但在前面的步骤中设置的字段为 null。我正在使用 primefaces 3.5 版本和 jsf-api 和 jsf-impl 2.1.18。
这是代码：
用户向导：
@ManagedBean(name="userWizardBean")
@SessionScoped
public class UserWizard {
private User user = new User();
private boolean skip;
private static Logger logger = Logger.getLogger(UserWizard.class.getName());
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
public void save(ActionEvent actionEvent) {
//Persist user
FacesMessage msg = new FacesMessage("Successful", "Welcome :" + user.getFirstname());
FacesContext.getCurrentInstance().addMessage(null, msg);
}
public boolean isSkip() {
return skip;
}
public void setSkip(boolean skip) {
this.skip = skip;
}
public String onFlowProcess(FlowEvent event) {
logger.info("Current wizard step:" + event.getOldStep());
logger.info("Next step:" + event.getNewStep());
if(skip) {
skip = false; //reset in case user goes back
return "confirm";
}
else {
return event.getNewStep();
}
}
}
用户：
public class User {
private String firstname;
private String lastname;
private Integer age;
private String street;
private String city;
private String postalCode;
private String info;
private String email;
private String phone;
public User(String firstname, String lastname, Integer age, String street, String city, String postalCode, String info, String email, String phone) {
this.firstname = firstname;
this.lastname = lastname;
this.age = age;
this.street = street;
this.city = city;
this.postalCode = postalCode;
this.info = info;
this.email = email;
this.phone = phone;
}
public User() {
}
public String getFirstname() {
return firstname;
}
public void setFirstname(String firstname) {
this.firstname = firstname;
}
public String getLastname() {
return lastname;
}
public void setLastname(String lastname) {
this.lastname = lastname;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
public String getStreet() {
return street;
}
public void setStreet(String street) {
this.street = street;
}
public String getCity() {
return city;
}
public void setCity(String city) {
this.city = city;
}
public String getPostalCode() {
return postalCode;
}
public void setPostalCode(String postalCode) {
this.postalCode = postalCode;
}
public String getInfo() {
return info;
}
public void setInfo(String info) {
this.info = info;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
}
和 xhtml 文件：
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:p="http://primefaces.org/ui"
xmlns:f="http://java.sun.com/jsf/core">
<h:head>
</h:head>
<h:body>
<h:form>
<p:growl id="growl" sticky="true" showDetail="true"/>
<p:wizard widgetVar="wiz"
flowListener="#{userWizard.onFlowProcess}">
<p:tab id="personal" title="Personal">
<p:panel header="Personal Details">
<h:messages errorClass="error"/>
<h:panelGrid columns="2" columnClasses="label, value" styleClass="grid">
<h:outputText value="Firstname: *" />
<p:inputText required="true" label="Firstname"
value="#{userWizard.user.firstname}" />
<h:outputText value="Lastname: *" />
<p:inputText required="true" label="Lastname"
value="#{userWizard.user.lastname}" />
<h:outputText value="Age: " />
<p:inputText value="#{userWizard.user.age}" />
<h:outputText value="Skip to last: " />
<h:selectBooleanCheckbox value="#{userWizard.skip}" />
</h:panelGrid>
</p:panel>
</p:tab>
<p:tab id="address" title="Address">
<p:panel header="Adress Details">
<h:messages errorClass="error"/>
<h:panelGrid columns="2" columnClasses="label, value">
<h:outputText value="Street: " />
<p:inputText value="#{userWizard.user.street}" />
<h:outputText value="Postal Code: " />
<p:inputText value="#{userWizard.user.postalCode}" />
<h:outputText value="City: " />
<p:inputText value="#{userWizard.user.city}" />
<h:outputText value="Skip to last: " />
<h:selectBooleanCheckbox value="#{userWizard.skip}" />
</h:panelGrid>
</p:panel>
</p:tab>
<p:tab id="contact" title="Contact">
<p:panel header="Contact Information">
<h:messages errorClass="error"/>
<h:panelGrid columns="2" columnClasses="label, value">
<h:outputText value="Email: *" />
<p:inputText required="true" label="Email"
value="#{userWizard.user.email}" />
<h:outputText value="Phone: " />
<p:inputText value="#{userWizard.user.phone}"/>
<h:outputText value="Additional Info: " />
<p:inputText value="#{userWizard.user.info}"/>
</h:panelGrid>
</p:panel>
</p:tab>
<p:tab id="confirm" title="Confirmation">
<p:panel header="Confirmation">
<h:panelGrid id="confirmation" columns="6">
<h:outputText value="Firstname: " />
<h:outputText styleClass="outputLabel"
value="#{userWizard.user.firstname}" />
<h:outputText value="Lastname: " />
<h:outputText styleClass="outputLabel"
value="#{userWizard.user.lastname}"/>
<h:outputText value="Age: " />
<h:outputText styleClass="outputLabel"
value="#{userWizard.user.age}" />>
<h:outputText value="Street: " />
<h:outputText styleClass="outputLabel"
value="#{userWizard.user.street}" />
<h:outputText value="Postal Code: " />
<h:outputText styleClass="outputLabel"
value="#{userWizard.user.postalCode}" />
<h:outputText value="City: " />
<h:outputText styleClass="outputLabel"
value="#{userWizard.user.city}" />
<h:outputText value="Email: " />
<h:outputText styleClass="outputLabel"
value="#{userWizard.user.email}" />
<h:outputText value="Phone " />
<h:outputText styleClass="outputLabel"
value="#{userWizard.user.phone}"/>
<h:outputText value="Info: " />
<h:outputText styleClass="outputLabel"
value="#{userWizard.user.info}" />
<h:outputText />
<h:outputText />
</h:panelGrid>
<p:commandButton value="Submit" update="growl"
actionListener="#{userWizard.save}"/>
</p:panel>
</p:tab>
</p:wizard>
</h:form>
</h:body>
</html>
任何帮助或提示将不胜感激。谢谢