无法让向导示例在 GateIn 3.1 GA 中运行

Question

我无法获取 Richfaces 向导示例在 GateIn 3.1 中工作。

我正在使用 JSF 1.2、Facelets 1.1.15、GateIn 3.1 GA、Richfaces 3.3.3、IE8。

我在这里重新发帖，因为我过去在 stackoverflow 上运气不错（最初发布在 JBoss 用户论坛上，但没有收到任何回复）。

我已经完全按照示例创建了文件，但是当我单击第一页上的“下一步”按钮时，不会包含下一页（显示不会更改）。

我应该补充一点，我在尝试获取此处描述的 Max Katz 模型向导示例时遇到了同样的问题： http://mkblog.exadel.com/2010/06/ richfaces-wizard-inside-modal-panel/

我在 IE8 和 Chrome 中遇到同样的问题。

注意：我还尝试将 添加到导航规则中，当我单击“下一步”按钮时，整个 portlet 将转到空白页面。

调试这个有什么帮助吗？我将 log4j 打开为 DEBUG，但没有看到任何关于问题所在的提示。

另一个区别是我们使用 Spring。

这是faces-config.xml：

<?xml version="1.0" encoding="UTF-8"?>
<faces-config xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-facesconfig_1_2.xsd"
    version="1.2">
    <application>
        <view-handler>org.jboss.portletbridge.application.PortletViewHandler</view-handler>
        <state-manager>org.jboss.portletbridge.application.PortletStateManager</state-manager>
    </application>

    <!-- SPRING INTEGRATION TO JSF -->
    <application>
        <el-resolver>org.springframework.web.jsf.el.SpringBeanFacesELResolver</el-resolver>
    </application>

    <application>
        <locale-config>
            <default-locale>en</default-locale>
            <supported-locale>es</supported-locale>
            <supported-locale>en</supported-locale>
        </locale-config>
    </application>

    <application>
        <el-resolver>org.springframework.web.jsf.el.SpringBeanFacesELResolver</el-resolver>
    </application>

    <managed-bean>
        <managed-bean-name>profile</managed-bean-name>
        <managed-bean-class>com.Profile</managed-bean-class>
        <managed-bean-scope>request</managed-bean-scope>
    </managed-bean>

    <navigation-rule>
        <from-view-id>/richfaces/include/examples/wstep1.xhtml</from-view-id>
        <navigation-case>
            <from-outcome>next</from-outcome>
            <to-view-id>/richfaces/include/examples/wstep2.xhtml</to-view-id>
        </navigation-case>
    </navigation-rule> 

    <navigation-rule>
        <from-view-id>/richfaces/include/examples/wstep2.xhtml</from-view-id>
        <navigation-case>
            <from-outcome>previous</from-outcome>
            <to-view-id>/richfaces/include/examples/wstep1.xhtml</to-view-id>
        </navigation-case>
        <navigation-case>
            <from-outcome>next</from-outcome>
            <to-view-id>/richfaces/include/examples/finalStep.xhtml</to-view-id>
        </navigation-case>
    </navigation-rule> 

    <navigation-rule>
        <from-view-id>/richfaces/include/examples/finalStep.xhtml</from-view-id>
        <navigation-case>
            <from-outcome>previous</from-outcome>
            <to-view-id>/richfaces/include/examples/wstep2.xhtml</to-view-id>
        </navigation-case>
    </navigation-rule>
</faces-config>

这是spring-beans.xml中的bean：

<bean id="profile" class="com.Profile" scope="request" >
</bean>

这是start.xhtml（完全来自演示） ：

<ui:composition xmlns="http://www.w3.org/1999/xhtml"
    xmlns:ui="http://java.sun.com/jsf/facelets"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:f="http://java.sun.com/jsf/core"
    xmlns:a4j="http://richfaces.org/a4j"
    xmlns:rich="http://richfaces.org/rich">

    <style type="text/css">
        .col1 { vertical-align:top; }
        .col2 { vertical-align:top; width:450px; }
        .wizard { width:400px; }
        .wform td { vertical-align:top; }
        .wfcol1 { text-align: right; white-space:nowrap;}
        .wfcol2 { }
        .wfcol3 { }
        .s1row td { height:30px; }
        .rich-message { color:red;  }
        .navPanel {
            position:absolute;
            bottom:0;
            height:23px;
            margin:0;
            padding:2px;
        }
    </style>
    <br/>
    <h:panelGrid width="100%" columns="2" columnClasses="col1,col2">
        <a4j:keepAlive beanName="profile" />
        <rich:panel styleClass="wizard">
            <f:facet name="header">
                <h:outputText value="Using a4j:include for Wizard-like behaviour" />
            </f:facet>
            <h:form>
                <a4j:include viewId="/richfaces/include/examples/wstep1.xhtml" />
            </h:form>
        </rich:panel>
    </h:panelGrid>
    <br/>
</ui:composition>

这里是 wstep1.xhtml （该页面最初加载到 portlet 中）：

<ui:composition xmlns="http://www.w3.org/1999/xhtml"
    xmlns:ui="http://java.sun.com/jsf/facelets"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:f="http://java.sun.com/jsf/core"
    xmlns:a4j="http://richfaces.org/a4j"
    xmlns:rich="http://richfaces.org/rich">

    <div style="position:relative;height:140px">
        <h:panelGrid rowClasses="s1row" columns="3" columnClasses="wfcol1,wfcol2,wfcol3">
            <h:outputText value="First Name:" />
            <h:inputText id="fn" value="#{profile.firstName}" label="First Name" required="true" />
            <rich:message  for="fn" />

            <h:outputText value="Last Name:" />
            <h:inputText  id="ln" value="#{profile.lastName}"  label="Last Name"  required="true" />
            <rich:message  for="ln" />

            <h:outputText value="Company:" />
            <h:inputText id="comp" value="#{profile.company}"  label="Company"  required="true" />
            <rich:message for="comp"/>
        </h:panelGrid>
        <div class="navPanel" style="width:100%;">
            <a4j:commandButton style="float:right" action="next" value="Next &gt;&gt;"/>
        </div>
    </div>
</ui:composition>

这里是 portlet.xml：

<?xml version="1.0" encoding="UTF-8"?>
<portlet-app
    xmlns="http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd"
    version="2.0">

    <portlet>
        <portlet-name>Rule Portlet</portlet-name>
        <display-name>Rule Editor</display-name>
        <portlet-class>javax.portlet.faces.GenericFacesPortlet</portlet-class>
        <init-param>
            <name>javax.portlet.faces.defaultViewId.view</name>
            <value>/start.xhtml</value>
        </init-param>
        <init-param>
            <name>javax.portlet.faces.preserveActionParams</name>
            <value>true</value>
        </init-param>
        <supports>
            <mime-type>text/html</mime-type>
            <portlet-mode>VIEW</portlet-mode>
        </supports>
        <portlet-info>
            <title>Rule Editor</title>
        </portlet-info>
    </portlet>
</portlet-app>

这里是 web.xml：

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    id="WebApp_ID" version="2.5">

    <display-name>Filter Portal</display-name>

    <context-param>
        <param-name>org.jboss.portletbridge.WRAP_SCRIPTS</param-name>
        <param-value>true</param-value>
    </context-param>
    <context-param>
        <param-name>javax.portlet.faces.renderPolicy</param-name>
        <param-value>ALWAYS_DELEGATE</param-value>
    </context-param>
    <context-param>
        <param-name>org.ajax4jsf.RESOURCE_URI_PREFIX</param-name>
        <param-value>rfRes</param-value>
    </context-param>
    <context-param>
        <param-name>org.richfaces.LoadStyleStrategy</param-name>
        <param-value>ALL</param-value>
    </context-param>
    <context-param>
        <param-name>org.richfaces.LoadScriptStrategy</param-name>
        <param-value>ALL</param-value>
    </context-param>
    <context-param>
        <param-name>org.ajax4jsf.COMPRESS_SCRIPT</param-name>
        <param-value>false</param-value>
    </context-param>
    <context-param>
        <param-name>javax.faces.DEFAULT_SUFFIX</param-name>
        <param-value>.xhtml</param-value>
    </context-param>
    <context-param>
        <param-name>facelets.DEVELOPMENT</param-name>
        <param-value>false</param-value>
    </context-param>

    <servlet>
        <servlet-name>Faces Servlet</servlet-name>
        <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>Faces Servlet</servlet-name>
        <url-pattern>/faces/*</url-pattern>
    </servlet-mapping>

    <session-config>
        <session-timeout>10</session-timeout>
    </session-config>

    <!-- Spring Configuration -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/spring-beans.xml</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <listener>
        <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
    </listener>

    <context-param>
        <param-name>com.sun.faces.IS_SAVE_BINDINGS_STATE</param-name>
        <param-value>false</param-value>
    </context-param>
    <context-param>
        <param-name>facelets.BUILD_BEFORE_RESTORE</param-name>
        <param-value>true</param-value>
    </context-param>
    <context-param>
        <param-name>facelets.RECREATE_VALUE_EXPRESSION_ON_BUILD_BEFORE_RESTORE</param-name>
        <param-value>true</param-value>
    </context-param>
    <context-param>
        <param-name>facelets.RESOURCE_RESOLVER</param-name>
        <param-value>com.CustomResourceResolver</param-value>
    </context-param>
</web-app>

Answer 1

我认为 web.xml 中的最后三个参数可能有问题。众所周知，它们会导致 AJAX 出现问题（我也遇到过这些问题）。关于这些参数的文档很少。虽然我发现了关于他们的评论：

<!-- Undocumented, so using "default"...(should be used in conjunction with following 2 parameters)
<context-param>
        <param-name>com.sun.faces.IS_SAVE_BINDINGS_STATE</param-name>
        <param-value>false</param-value>
</context-param>
-->
<!-- http://javaspecialist.wordpress.com/2010/05/30/performance-tuning-of-seam-jsf-richfaces-for-webapps/
BUILD_BEFORE_RESTORE:
         Idea behind using buildBeforeRestore is to restore the view even if the associated session
         has expired and thereby avoiding the ViewExpiredException.
         Setting it to true, Facelets can build view before request processing
         instead of state saving. But this will cause some other issues.
 RECREATE_VALUE_EXPRESSION_ON_BUILD_BEFORE_RESTORE:
         In JSF 1.2 with Facelets, you can reduce the memory overhead by not saving
         the ValueExpressions. But for this you also need to set
         the BUILD_BEFORE_RESTORE to true, which can cause unpredictable behaviour
         for the components.

This paramS from facelets is notorious for breaking some of the Ajax components.
Seen with Richfaces Ajax4jsf. There isn’t any documented work around for this.
Hence explicitly turn both BUILD_BE… and RECREATE… to false.
--> 

以及这些知识的来源：
http://code.google.com/p/java-education/source/browse/trunk/JPA-Spring-JSF/CZU-PEF-DataModelling/web-gui/src/main/webapp/ WEB-INF/web.xml?spec=svn200&r=200

所以我建议从你的 web.xml 中注释掉这一点：

<context-param>
        <param-name>facelets.BUILD_BEFORE_RESTORE</param-name>
        <param-value>true</param-value>
    </context-param>
    <context-param>
        <param-name>facelets.RECREATE_VALUE_EXPRESSION_ON_BUILD_BEFORE_RESTORE</param-name>
        <param-value>true</param-value>
    </context-param>
    <context-param>
        <param-name>facelets.RESOURCE_RESOLVER</param-name>
        <param-value>com.CustomResourceResolver</param-value>
    </context-param>

希望它会有任何帮助。