如何在rich：column中使用href？

Question

我是新來的xhtml，我試圖通過一個特定的名稱（拍賣名稱在我的情況下）在表的單元格內使用href。當我按拍賣的名字時，我想要在另一個頁面內發送添加出價，看到最高出價等。它只是向我展示了引用頁面中的最後一個面板組（它表示：此次拍賣沒有出價）。

有人可以幫我嗎？

從豐富的代碼：柱是auctionList.xhtml：

<composite:implementation> 
    <rich:dataTable id="auctionsTable" rows="6" value="#{cc.attrs.auctions}" var="auct" border="1" styleClass="flat list auctions" rendered="#{cc.attrs.rendered and not empty cc.attrs.auctions}"> 
     <f:facet name="header"> 
      <rich:dataScroller forComponent="auctionsTable" /> 
     </f:facet> 

     <h:link outcome="/destination" value="link" /> 


     <rich:column sortBy="#{auct.name}" sortOrder="ascending" > 
      <a href="detail.xhtml"> 
      #{auct.name} 
      </a>     
     </rich:column> 

和detail.xhml是：

<ui:composition> 

    <h2>Details</h2> 
    <h:panelGroup layout="div" 
     rendered="#{auctionManager.currentAuction != null}"> 
     <a4j:poll interval="3000" render="highestBidOutput, bidHistory" action="#{auctionManager.refreshAuction(currentAuction)}" /> 
     <h3>#{currentAuction.name}</h3> 
     <h:panelGrid> 
     <h:column> 
      <h:outputLabel value="ID:" /> 
      <h:outputText value="#{currentAuction.id}" /> 
      </h:column> 

     <h:column> 
      <h:outputLabel value="Owner:" /> 
      <h:outputText value="#{currentAuction.owner.name}" /> 
     </h:column> 

     <h:column> 
      <h:outputLabel value="Original price:" /> 
      <h:outputText value="#{currentAuction.originalPrice}" /> 
     </h:column> 

     <h:column> 
      <h:outputLabel value="Description:" /> 
      <h:outputText value="#{currentAuction.description}" /> 
     </h:column> 

     <h:column> 
      <h:outputLabel value="Location:" /> 
      <h:outputText value="#{currentAuction.location}" /> 
     </h:column> 

      </h:panelGrid> 
      <h:panelGrid columns="2"> 
      <h:outputLabel value="Highest bid:" 
       rendered="#{not empty currentAuction.highestBid}" /> 
      <h:outputText id="highestBidOutput" 
       value="#{currentAuction.highestBid.amount} (#{currentAuction.highestBid.bidder.name})" 
       rendered="#{not empty currentAuction.highestBid}" /> 

      <h:outputLabel value="Bid" rendered="#{loginManager.logged}" /> 
      <h:form rendered="#{loginManager.logged}"> 
       <h:inputText id="bidAmountInput" value="#{bidAmount}" 
        validator="#{bidValidator.validateBid}" /> 
       <h:commandButton value="Add" 
        action="#{auctionManager.addBid(bidAmount)}" /> 
       <h:messages style="color: red" /> 
      </h:form> 

     </h:panelGrid> 

     <h:panelGroup id="bidHistory" rendered="#{not empty currentAuction.bids}"> 
      <h3>Bids</h3> 
      <h:dataTable var="offer" value="#{currentAuction.bids}" border="1" 
       styleClass="flat"> 
       <h:column>#{offer.bidder.name}</h:column> 
       <h:column>#{offer.amount}</h:column> 
      </h:dataTable> 
     </h:panelGroup> 

    </h:panelGroup> 

    <h:panelGroup layout="div" 
     rendered="#{auctionManager.currentAuction == null}"> 
     <p>No bids for given auction.</p> 
    </h:panelGroup> 

和AuctionManagerImpl.java在detail.xhtml使用：

private static final long serialVersionUID = 1L; 

private Auction currentAuction = null; 

@PersistenceContext(type=PersistenceContextType.EXTENDED) 
private EntityManager em; 

@Inject 
private LoginManager loginManagerBean; 

@Resource SessionContext sessionContext; 

@Produces 
@Named 
@Dependent 
@CurrentAuction 
@PermitAll 
public Auction getCurrentAuction() { 
    if (currentAuction != null && !em.contains(currentAuction)) { 
     currentAuction = em.merge(currentAuction); 
    } 
    return currentAuction; 
} 

@PermitAll 
public Long getCurrentAuctionId() { 
    return (currentAuction == null) ? null : currentAuction.getId(); 
} 

@PermitAll 
public void setCurrentAuctionId(Long currentId) { 
    this.currentAuction = em.find(Auction.class, currentId); 
} 

@PermitAll 
public List<Auction> getAll() { 
    return em.createQuery("SELECT a FROM Auction a", Auction.class) 
      .getResultList(); 
} 

@PermitAll 
public List<Auction> getAuctionsWinningByUser(User user) { 
    String jql = "SELECT auction FROM Auction auction, User user " 
      + "WHERE user=:user AND auction.highestBid member of user.bids " 
      + "ORDER BY auction.id"; 
    TypedQuery<Auction> query = em.createQuery(jql, Auction.class); 
    query.setParameter("user", user); 
    List<Auction> auctions = query.getResultList(); 
    return auctions; 
} 

@PermitAll 
public List<Auction> getAuctionLoosingByUser(User user) { 
    String jql = "SELECT DISTINCT auction FROM User user " 
      + "JOIN user.bids bid JOIN bid.auction auction " 
      + "WHERE user=:user AND auction.highestBid.bidder != user " 
      + "ORDER BY auction.id"; 
    TypedQuery<Auction> query = em.createQuery(jql, Auction.class); 
    query.setParameter("user", user); 
    List<Auction> auctions = query.getResultList(); 
    return auctions; 
} 

@PermitAll 
public void refreshAuction(Auction auction) { 
    em.refresh(auction); 
} 

//@PermitAll 
public void addBid(long bidAmount) { 
    if (sessionContext.getCallerPrincipal() == null) { 
     throw new IllegalStateException(
       "user must be logged in order to add bid"); 
    } 
    if (currentAuction == null) { 
     throw new IllegalStateException(
       "currentAuction have to be selected in order to add bid"); 
    } 

    Bid bid = new Bid(loginManagerBean.getCurrentUser(), currentAuction, bidAmount); 
    em.persist(bid); 
    em.flush(); 
    em.refresh(bid); 
} 

}

也是非常重要的是list.xhtml，我利用auctionList.xhtml的：

<ui:composition template="templates/home.xhtml"> 
<ui:param name="activeTab" value="list" /> 

<ui:define name="content"> 
    <h2>Auction List</h2> 
    <a:auctionList auctions="#{auctionManager.all}" /> 
</ui:define> 

Answer 1

Basicaly你需要把一個值的請求，並重定向到目標頁面，使用JSF，一種有String的方法，隱式返回導航，可以這樣做：

public String sendToPageAndPutValue(){ 
FacesContext.getCurrentInstance().getExternalContext().getFlash().put(paramName, paramValue); 
    return "pageDestination.xhtml"; 
} 

To r在ECOVER目的地這個值豆你可以做這樣的：

FacesContext.getCurrentInstance().getExternalContext().getFlash().get("paramName") 

檢查在bean：

@Named -> javax.inject.Named 
@ViewScoped -> org.omnifaces.cdi.ViewScoped 
public class YourBean 

在你的XHTML，你需要調用啊這種方法的commandButton或A4J：使用的commandButton財產訴訟

<h:commanButton id="idButton" value="Send" execute="@this" action="#{yourBean.sendToPageAndPutValue()}"/>