Seam和Prettyfaces

Question

我使用的是JSF1.2和Seam 2.2.0的prettyfaces 3.1.0。我有以下的漂亮-config.xml中：

<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豆：

@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; 
} 

映射模式工作正常，但我總是得到以下異常：

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)

我做錯了什麼？ 謝謝

Answer 1

它看起來像是阻止Seam ConversationContext被恢復。

如果無法解決該問題，則可以通過在不同階段調用您的操作來解決此問題，例如RENDER_RESPONSE。如果這太遲了，那麼我建議使用延遲初始化樣式方法來加載帳戶信息。 （例如，使用本地字段和getAccountInfo（）方法中的null檢查。）