JSF通过一个列表显示在另一个页面

Question

嗨，我是新来的JSF我有点失落。这是我想要做的。 我有一个页面，其中显示每个节目都有一个表示列表的节目列表。我希望用户通过点击某个特定的节目来进入只显示节目的链接表示的页面。这里是我当前的.xhtml页面和我的两个托管的bean。他们现在所做的是显示所有节目和所有列表。

@Entity 
@Table(name = "SHOW_SPECTACLE") 
public class Spectacle implements Serializable { 
    private static final long serialVersionUID = 1L; 

    @Id 
    @GeneratedValue(strategy = GenerationType.IDENTITY) 
    @Column(name = "ID") 
    private Long id; 

    @ElementCollection 
    @CollectionTable(name = "T_TYPES_SPECTACLE") 
    @Column(name = "TYPES_SPECTACLE") 
    private List<String> typesSpectacle; 

    @Column(name = "NOM_SPECTACLE") 
    private String nomSpectacle; 

    @Column(name = "DESCRIPTION") 
    private String description; 
    @Column(name = "LIEN_VIDEO") 
    private String lienVideo; // type Blop 
    @Column(name = "LIEN_IMAGE") 
    private String lienImage; 

    @OneToOne 
    private Artiste artiste; 
    @OneToMany(mappedBy = "spectacle") 
    private List<Representation> representations; 

} 

public class Representation implements Serializable { 
    private static final long serialVersionUID = 1L; 

    @Id 
    @GeneratedValue(strategy = GenerationType.IDENTITY) 
    @Column(name = "ID") 
    private Long id; 
    @Column(name = "NB_BILLETS_DISPO") 
    private Integer nbBilletsDispo; 
    @Column(name = "PRIX") 
    private Float prix; 
    @Column(name = "NOM") 
    private String nom; 
    @Column(name = "ADRESSE") 
    private String adresse; 
    @Column(name = "DATE_DEBUT") 
    @Temporal(TemporalType.DATE) 
    private Date dateDebut; 
    @Column(name = "DATE_FIN") 
    @Temporal(TemporalType.DATE) 
    private Date dateFin; 
    @Column(name = "IS_ANNULATION") 
    private Boolean isAnnulation; 

    @OneToOne(mappedBy = "representation") 
    private Salle salle; 

    @ManyToOne 
    private Spectacle spectacle; 

} 

是显示所有的显示XHTML页面的部分，我在里面使用一些primefaces组件

<h:form id="form"> 

     <p:dataGrid var="spec" value="#{menuCtrl.spectacles}" columns="3" 
        rows="12" paginator="true" 
        paginatorTemplate="{CurrentPageReport} {FirstPageLink} {PreviousPageLink} {PageLinks} {NextPageLink} {LastPageLink} {RowsPerPageDropdown}" 
        rowsPerPageTemplate="9,12,15"> 

      <p:panel header="#{spec.nomSpectacle}" style="text-align:center"> 

       <h:panelGrid columns="1" style="width:100%"> 
        <ui:param name="imgPath" value="images:#{spec.artiste.lienPhoto}.png" /> 
        <p:graphicImage value="#{resource[imgPath]}" /> 

        <h:outputText value="#{spec.description}" /> 

<!--      <p:commandLink update=":form:carDetail" oncomplete="carDialog.show()" title="View Detail"> 
          <h:outputText styleClass="ui-icon ui-icon-search" style="margin:0 auto;" /> 
          <f:setPropertyActionListener value="{spec}" 
                 target="{tableBean.selectedCar}" /> 
        </p:commandLink> --> 
       </h:panelGrid> 
      </p:panel> 

     </p:dataGrid> 
    </h:form> 

编辑这里是bean使用

@ManagedBean(name = "menuCtrl") 
@ApplicationScoped 
public class MenuControleur extends AbstractControleur implements Serializable { 
private static final Logger log = Logger.getLogger(ApplicationControleur.class); 

// cache 
private List<Spectacle> spectacles; 
private List<Representation> representations; 
private List<Artiste> artistes; 


private List<Representation> representationsFiltrees; 


@PostConstruct 
public void init() { 
    // instanciation couche [métier] 
    super.initStubsPresentation(); 

    this.spectacles = this.stubsDaoPresentation.getAllSpectacle(); 
    this.representations = this.stubsDaoPresentation.getAllRepresentation(); 
    this.artistes = this.stubsDaoPresentation.getAllArtistes(); 

    log.info("sonar source Spectacle 1: " + this.spectacles); 
    log.info("sonar source Representation 1: " + this.representations); 
    log.info("sonar source Artiste 1: " + this.artistes); 
}  

public List<Representation> getRepresentationsFiltrees() { 
    return representationsFiltrees; 
} 

public void setRepresentationsFiltrees(List<Representation> representationsFiltrees) { 
    this.representationsFiltrees = representationsFiltrees; 
} 



public String doHomme(){ 
    return "eticket.index"; 
} 

public String doCart(){ 
    return "eticket.pageCart"; 
} 

public String doShow(){ 
    return "eticket.pageShows"; 
} 

/** 
* Creates a new instance of MenuControleur 
*/ 
public MenuControleur() { } 

public List<Spectacle> getSpectacles() { 
    return spectacles; 
} 

public void setSpectacles(List<Spectacle> spectacles) { 
    this.spectacles = spectacles; 
} 

public List<Representation> getRepresentations() { 
    return representations; 
} 

public void setRepresentations(List<Representation> representations) { 
    this.representations = representations; 
} 

public List<Artiste> getArtistes() { 
    return artistes; 
} 

public void setArtistes(List<Artiste> artistes) { 
    this.artistes = artistes; 
}  

}

Answer 1

您可以添加一个

`<h:link value="Second Page" outcome="secondpage" > 
    <f:param name="id" value="#{bean.id}" /> 
</h:link> 

`

或在您的第一页<a href="secondpage.jsf?id=#{bean.id}">Second Page</a>

您需要在豆你的第二个页面是这样的

@ManagedBean("bean2") 
public class SecondPageBean { 

    @ManagedProperty(value = "#{param.id}") 
    private String id; 
    private String name; 

    @PostConstruct  
    public String init() { 
    // initialieMySecondPageBasedOnIdFromFirstPage(id); 
    } 
} 

你也可以做到这一点在你的secondpage XHTML更换@ManagedProperty(value = "#{param.id}") ，

<f:metadata> 
    <f:viewParam name="id" value="#{bean.id}" /> 
</f:metadata> 

但是，如果你wan t在两个连续请求之间共享对象/状态，然后查看Flash范围。

Understand Flash Scope in JSF2