Question

情景1：如果friendlyURL是'/ requestform / servicerequest'和requestProcessorBean.userRequestVO == null，那么会话无效并重定向到'/ web / pds / login'页面..

场景2：如果如果friendlyURL是'/ requestform / servicerequest'并且requestProcessorBean.userRequestVO != null然后重定向到'serviceRequest.xhtml'页面。

我想知道Scenario 1如何使用JSF Phase Listener实现。我已经实现了方案1，如下所示：的 requestForm.xhtml：

<?xml version="1.0" encoding="UTF-8"?>
<f:view xmlns="http://www.w3.org/1999/xhtml" xmlns:f="http://java.sun.com/jsf/core" xmlns:h="http://java.sun.com/jsf/html" xmlns:ui="http://java.sun.com/jsf/facelets">
    <h:head>
    </h:head>
    <h:body>
        <h:outputFormat rendered="#{lookupBean.friendlyURL == '/requestform/servicerequest' and (requestProcessorBean.userRequestVO != null)}">
            <ui:include src="serviceRequest.xhtml" />
        </h:outputFormat>
    </h:body>
</f:view>

我正在使用Liferay 6.0和JSF 2.0。

由于

Answer 1

我真的不会推荐条件重定向的阶段监听器。请改用<f:event type="preRenderView"/>。但是，如果由于某种原因你被限制使用阶段隐藏器，你的实现将如下所示：

将PhaseListener定义为此

/*we're defining the PhaseListener as a ManagedBean so
 * we can inject other beans into it 
 */
@ManagedBean(name = "thePhaseListener")
@RequestScoped
public class TestPhaseListener implements PhaseListener {


   @ManagedProperty(value = "#{requestProcessorBean}")
   transient private RequestProcessorBean requestProcessorBean;

   @ManagedProperty(value = "#{lookupBean}")
   transient private LookupBean lookupBean;

   @Override
   public void afterPhase(PhaseEvent event) {
      //throw new UnsupportedOperationException("Not supported yet.");
   }

   @Override
   public void beforePhase(PhaseEvent event) {

       try {

          if (lookupBean.getFriendlyURL.equals("/requestform/servicerequest") && (requestProcessorBean.getUserRequestVO() == null)) {
            event.getFacesContext().getExternalContext().redirect("/web/pds/login");
           }
        } catch (IOException ex) {
          Logger.getLogger(TestPhaseListener.class.getName()).log(Level.SEVERE, null, ex);
        }
     }

   @Override
   public PhaseId getPhaseId() {
      return PhaseId.RESTORE_VIEW; // The RESTORE_VIEW phase is the first in the lifecycle of a JSF view
   }
}

在您想要的页面上使用下面的标记注册新的PhaseListener
```
<f:phaseListener type="com.you.TestPhaseListener"/>
```

就像我在本文开头提到的那样，这种方法不必要地笨拙，太多的努力来实现这么少和IMO，滥用阶段助手。

使用JSF PhaseListener重定向到页面

1 个答案: