我对托管会话范围的Bean有点奇怪的问题。我对jsf很陌生,这看起来很奇怪。情况是:
loginBean存储一些在成功登录后初始化的变量。第一次,它们被初始化,但是成功登录后,用户被重定向到profile.xhtml页面,在其中我从loginBean调用这些变量。在此页面中,loginBean中的变量为null。因此,重定向后我丢失了所有数据。
loginBean:
package beans;
import facades.ContactFacade;
import facades.UsersFacade;
import java.io.Serializable;
import javax.ejb.EJB;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;
import model.Contact;
@ManagedBean(name="loginBean")
@SessionScoped
public class LoginBean implements Serializable{
@EJB
private ContactFacade contactFacade;
@EJB
private UsersFacade usersFacade;
private String Name;
private String Password;
private int ContactID;
private Contact contact;
public LoginBean() {
}
public Contact getContact() {
return contact;
}
public void setContact(Contact contact) {
this.contact = contact;
}
public String getName() {
return Name;
}
public void setName(String Name) {
this.Name = Name;
}
public String getPassword() {
return Password;
}
public void setPassword(String Password) {
this.Password = Password;
}
public int getContactID() {
return ContactID;
}
public void setContactID(int ContactID) {
this.ContactID = ContactID;
}
private boolean checkValidity(){
return (
(getName()!=null&&getName().length()>0)
&&(getPassword()!=null&&getPassword().length()>0))
?true:false;
}
public String login(){
if(checkValidity()&&usersFacade.tryLogin(getName(), getPassword())){
setContactID(usersFacade.getContactID(getName()));
getContactInstance();
return "profile.xhtml?faces-redirect=true";
}else{
return "loginError.xhtml?faces-redirect=true";
}
}
private void getContactInstance(){
setContact(contact);
this.contact=contactFacade.getContact(getContactID());
}
public String getDepartment(){
return contactFacade.getDepartmentName(getContact().getDepartment());
}
}
profile.xhtml jsf
<h:form>
<h2>My information</h2>
<h:panelGrid columns="2">
<h:outputLabel value="Name:"/>
<h:outputLabel value="#{loginBean.contact.name}"/>
<h:outputLabel value="Lastname:"/>
<h:outputLabel value="#{loginBean.contact.lastname}"/>
<h:outputLabel value="Address:"/>
<h:outputLabel value="#{loginBean.contact.address}"/>
<h:outputLabel value="Telephone:"/>
<h:outputLabel value="#{loginBean.contact.telephone}"/>
<h:outputLabel value="Email:"/>
<h:outputLabel value="#{loginBean.contact.email}"/>
<h:outputLabel value="Department:"/>
<h:outputLabel value="#{loginBean.department}"/>
<h:commandButton id="btnChange" value="Change Info" />
</h:panelGrid>
</h:form>
这对我来说很奇怪。有人可以帮忙吗?提前致谢
最佳答案
可能是您已经在faces-config.xml中覆盖了bean吗?如果是这样,则在xml中定义的bean将具有更高的优先级,并且注释将被忽略。