異常處理在檢票口6成反饋面板

Question

有沒有辦法如何處理檢票應用所有的異常在一個地方

我想這一點：

// I am not sure if this is right place 
      this.getRequestCycleListeners().add(new AbstractRequestCycleListener() { 
       @Override 
       public IRequestHandler onException(RequestCycle cycle, Exception e) { 

        if (e instanceof MyException) { 
// display message in feedback panel of current webPage like: getString(e.getCode()) 
        }  
//redirect to some Error page 
       } 
      }); 

Answer 1

你在正確的軌道上：

getRequestCycleListeners().add(new AbstractRequestCycleListener() { 
    @Override 
    public IRequestHandler onException(RequestCycle cycle, Exception e) { 
     MyException myE = Exceptions.findCause(e, MyException.class); 
     if (myE != null) { 
      IPageRequestHandler handler = cycle.find(IPageRequestHandler.class); 
      if (handler != null) { 
       if (handler.isPageInstanceCreated()) { 
        WebPage page = (WebPage)(handler.getPage()); 

        page.error(page.getString(myE.getCode())); 

        return new RenderPageRequestHandler(new PageProvider(page)); 
       } 
     } 

     return null; 
    } 
});