接缝页面流示例 NumberGuess 未登陆到第二页答案

【问题标题】：Seam pageflow example NumberGuess Not landing on to the second page接缝页面流示例 NumberGuess 未登陆到第二页
【发布时间】：2015-05-14 14:45:19
【问题描述】：

我正在尝试运行简单的 Seam PageFlow 示例 NumberGuss。我已经将它部署在 Jboss 服务器上。当我访问 URL 时，它会出现在第一页，但是如果我点击该页面上提供的任何按钮，它会显示“页面未正确重定向”。在服务器日志中我发现

SEVERE [javax.enterprise.resource.webcontainer.jsf.application] (default task-16) Error Rendering View[/debug.xhtml]: org.jboss.weld.context.NonexistentConversationException: WELD-000321: No conversation found to restore for id 1.

I'm using wildfly-8.1.0 and jboss-seam-2.3.1

Attaching pageflow.jpdl.xml and numberGuess.xhtml for reference. Please help me resolve the issue I'm facing.

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:h="http://java.sun.com/jsf/html"
      xmlns:f="http://java.sun.com/jsf/core"
      xmlns:s="http://jboss.org/schema/seam/taglib">
  <h:head>
    <title>Guess a number...</title>
    <link href="niceforms.css" rel="stylesheet" type="text/css" />
    <script language="javascript" type="text/javascript" src="niceforms.js"><!-- --></script>
  </h:head>
  <body>
    <h1>Guess a number...</h1>
      <h:form id="NumberGuessMain" styleClass="niceform">

        <div>
        <h:messages id="messages" globalOnly="true"/>
        <h:outputText id="Higher"
                          value="Higher!" 
                      rendered="#{numberGuess.randomNumber gt numberGuess.currentGuess}"/>
        <h:outputText id="Lower"
                          value="Lower!" 
                      rendered="#{numberGuess.randomNumber lt numberGuess.currentGuess}"/>
        </div>

        <div>
        I'm thinking of a number between <h:outputText id="Smallest" value="#{numberGuess.smallest}"/> and
        <h:outputText id="Biggest" value="#{numberGuess.biggest}"/>. You have
        <h:outputText id="RemainingGuesses" value="#{numberGuess.remainingGuesses}"/> guesses.
        </div>

        <div>
        Your guess:
        <h:inputText id="inputGuess" value="#{numberGuess.currentGuess}" required="true" size="3" 
                 rendered="#{(numberGuess.biggest-numberGuess.smallest) gt 20}">
          <f:validateLongRange maximum="#{numberGuess.biggest}" 
                               minimum="#{numberGuess.smallest}"/>
        </h:inputText>

        <h:selectOneMenu id="selectGuessMenu" value="#{numberGuess.currentGuess}" required="true" rendered="#{numberGuess.selectMenuRendered}">
          <s:selectItems id="PossibilitiesMenuItems" value="#{numberGuess.possibilities}" var="i" label="#{i}"/>
        </h:selectOneMenu>

        <h:selectOneRadio id="selectGuessRadio" value="#{numberGuess.currentGuess}" required="true" rendered="#{numberGuess.radioButtonRendered}">
          <s:selectItems id="PossibilitiesRadioItems" value="#{numberGuess.possibilities}" var="i" label="#{i}"/>
        </h:selectOneRadio>

        <h:commandButton id="GuessButton" value="Guess" action="guess"/>
        <s:button id="CheatButton" value="Cheat" action="cheat"/>
        <s:button id="GiveUpButton" value="Give up" action="giveup"/>
        </div>

        <div>
        <h:message id="message" for="inputGuess" style="color: red"/>
        </div>

      </h:form>
  </body>
</html>

<!-- 

   An example of pageflow in jPDL. This exemplifies the
   approach where action handlers are attached transitions
   and decision nodes, instead of view components. 
   An alternative approach would be to attach all action 
   handlers to view components, and let the jPDL define
   only the navigation rules.
   
-->

<pageflow-definition 
	xmlns="http://jboss.org/schema/seam/pageflow"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation=
	    "http://jboss.org/schema/seam/pageflow http://jboss.org/schema/seam/pageflow-2.3.xsd"
	name="numberGuess">
   
   <start-page name="displayGuess" view-id="/numberGuess.xhtml">
      <redirect/>
      <transition name="guess" to="evaluateGuess">
         <action expression="#{numberGuess.guess}"/>
      </transition>
      <transition name="giveup" to="giveup"/>
      <transition name="cheat" to="cheat"/>
   </start-page>
   
   <decision name="evaluateGuess" expression="#{numberGuess.correctGuess}">
      <transition name="true" to="win"/>
      <transition name="false" to="evaluateRemainingGuesses"/>
   </decision>
   
   <decision name="evaluateRemainingGuesses" expression="#{numberGuess.lastGuess}">
      <transition name="true" to="lose"/>
      <transition name="false" to="displayGuess"/>
   </decision>
   
   <page name="giveup" view-id="/giveup.xhtml">
      <redirect/>
      <transition name="yes" to="lose"/>
      <transition name="no" to="displayGuess"/>
   </page>
   
   <process-state name="cheat">
      <sub-process name="cheat"/>
      <transition to="displayGuess"/>
   </process-state>

   <page name="win" view-id="/win.xhtml">
      
      <redirect/>
	  <end-conversation/>
   </page>
   
   <page name="lose" view-id="/lose.xhtml">
      
      <redirect/>
	  <end-conversation/>
   </page>
   
</pageflow-definition>

【问题讨论】：

标签： seam jboss-seam page-flow jpdl

【解决方案1】：

解决了这个问题。Weld 正在扫描存档，这似乎是导致问题的原因。Weld 文档说：您可以通过将以下内容添加到应用程序的 META-INF/jboss-all.xml 文件来为您的部署设置它。 jboss-all.xml 文件进入您的 META-INF 用于 ear 存档，并可能进入 WEB-INF 用于战争存档

<jboss xmlns="urn:jboss:1.0">
<weld xmlns="urn:jboss:weld:1.0" require-bean-descriptor="true"/>
</jboss>

它对我有用。

【讨论】：