Seam和Prettyfaces

Question

我使用的是带有JSF1.2和Seam 2.2.0的漂亮脸谱3.1.0。我有以下pretty-config.xml文件：

<url-mapping id="accountInfo"> 
  <pattern value="/account/#{accountId}/" />
  <view-id>/WEB-INF/view/account/account.seam</view-id>
  <action onPostback="false">#{accountAction.loadAccountInformation}</action>
</url-mapping>

和Seam bean：

@Name("accountAction")
@Scope(value = ScopeType.PAGE)
public class AccountAction {
 @RequestParameter("accountId")
 private Long accountId;

 @Out(scope = ScopeType.PAGE)
 @In(required = false, scope = ScopeType.PAGE)
 private AccountDTO    accountDto;
}

映射模式工作得很好，但是我总是得到以下异常：

WARNING: Cannot create Seam component, scope is not active: accountAction(PAGE) WARNING: JSF1053: (Listener: com.ocpsoft.pretty.faces.event.PrettyPhaseListener.afterPhase(), Phase ID: RESTORE_VIEW 1, View ID: /WEB-INF/view/account/account.xhtml) Exception thrown during phase-listener execution: com.ocpsoft.pretty.PrettyException: Exception occurred while processing Target Unreachable, identifier 'accountAction' resolved to null WARNING: com.ocpsoft.pretty.faces.beans.ActionExecutor.executeActions(ActionExecutor.java:68) com.ocpsoft.pretty.faces.event.PrettyPhaseListener.processEvent(PrettyPhaseListener.java:204) com.ocpsoft.pretty.faces.event.PrettyPhaseListener.afterPhase(PrettyPhaseListener.java:103) com.sun.faces.lifecycle.Phase.handleAfterPhase(Phase.java:175) com.sun.faces.lifecycle.Phase.doPhase(Phase.java:114) com.sun.faces.lifecycle.RestoreViewPhase.doPhase(RestoreViewPhase.java:102) com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118) javax.faces.webapp.FacesServlet.service(FacesServlet.java:265) SEVERE: swallowing exception\ java.lang.IllegalStateException: No active conversation context at org.jboss.seam.faces.FacesMessages.instance(FacesMessages.java:352) at org.jboss.seam.jsf.SeamPhaseListener.beforeRenderResponse(SeamPhaseListener.java:484) at org.jboss.seam.jsf.SeamPhaseListener.beforeServletPhase(SeamPhaseListener.java:148) at org.jboss.seam.jsf.SeamPhaseListener.beforePhase(SeamPhaseListener.java:118) at com.sun.faces.lifecycle.Phase.handleBeforePhase(Phase.java:214) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:96) at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:266)

我做错了什么？谢谢

Answer 1

看起来好像有什么东西阻止了Seam ConversationContext的恢复。

如果不能解决这个问题，您可以通过在不同的阶段调用您的操作来解决这个问题，例如RENDER_RESPONSE。如果为时已晚，那么我建议使用延迟初始化样式的方法来加载帐户信息。(例如，在getAccountInfo()方法中使用本地字段和null检查。)