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我的网站有一个通用模板，即xhtml file同时包含growl

<p:growl id="message" showDetail="true" life="3000" />

该模板在所有页面中进一步使用。我注意到这growl适用于页面index.xhtml，但不适用于其他页面。以下是faces-config.xml文件片段-

<navigation-rule>
    <display-name>index.xhtml</display-name>
    <from-view-id>/index.xhtml</from-view-id>
    <navigation-case>
        <from-outcome>NORMAL_USER</from-outcome>
        <to-view-id>/home.xhtml</to-view-id>
    </navigation-case>
</navigation-rule>

但是每当我home.xhtml通过链接访问页面时http://localhost:8080/portal/home.xhtml， 就会growl开始工作。在我update=":message"用来更新的所有页面中growl。谁是罪魁祸首？

下边是index.xhtml

<ui:composition template="/template/common/base.xhtml"
    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:p="http://primefaces.org/ui">

    <ui:define name="center">

        <h:form>
            <div align="center" style="margin-top: 10%; margin-bottom: 10%;">
                <p:panelGrid columns="2">
                    <f:facet name="header">  
                     #{msg.HEADER}
                    </f:facet>

                    <h:outputLabel for="username" value="#{msg.USERNAME}" />
                    <p:inputText id="username" value="#{client.user.username}"
                        required="true" requiredMessage="#{msg.USERNAME_REQUIRED_MSG}" />

                    <h:outputLabel for="password" value="#{msg.PASSWORD} " />
                    <p:password id="password" value="#{client.user.password}"
                        required="true" requiredMessage="#{msg.PASSWORD_REQUIRED_MSG}" />

                    <f:facet name="footer">
                        <div align="right">
                            <p:commandButton value="#{msg.LOGIN_BUTTON}" icon="ui-icon-check"
                                update=":message" action="#{client.login}" />
                        </div>
                    </f:facet>
                </p:panelGrid>
            </div>
        </h:form>

    </ui:define>
</ui:composition>

下边是base.xhtml

<!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:ui="http://java.sun.com/jsf/facelets"
    xmlns:p="http://primefaces.org/ui">

<h:head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
    <title>My Web Portal</title>
    <h:outputStylesheet library="css" name="default.css" />
</h:head>

<h:body>

    <p:growl id="message" showDetail="true" life="3000" />

    <h:link outcome="index" style="text-decoration: none;">
        <div id="header" style="margin: 2px; width: 100%; text-align: center;">
            <p:panel>
                <h:outputText value="My Web Portal"
                    style="font-size: 20px; " />
            </p:panel>
        </div>
    </h:link>

    <div id="middle" style="margin: auto; width: 80%;">
        <ui:insert name="center"></ui:insert>
    </div>

    <div id="footer"
        style="clear: both; text-align: center; margin: 2px; width: 100%;">
        <p:panel header="2013 All rights reserved. Designed by Ravi Joshi">
            <h:link value="Home" outcome="index" />
            <p:spacer width="10px;" />
            <h:link value="About Us" outcome="index" />
            <p:spacer width="10px;" />
        </p:panel>
    </div>

</h:body>
</html>

下一页home.xhtml也base.xhtml以与使用它相同的方式index.xhtml使用...下面是它的片段-

<ui:composition template="/template/common/base.xhtml"
    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:p="http://primefaces.org/ui">

    <ui:define name="center">

    <!--  -->
    <!--  -->
    <!--  -->
    <!--  -->
    <!--  -->
    <!--  -->
    <!--  -->
    <!--  -->
    <!--  -->
    <!--  -->
    <!--  -->
    <!--  -->
    <!--  -->
    <!--  -->


    </ui:define>
</ui:composition>
4

1 回答 1

5

If a parent of the with the UICommand button is been rendered/updated by an ajax request beforehand, then the first action will always fail. The second and subsequent actions will work. This is caused by a bug in view state handling which is reported as JSF spec issue 790 and fixed in JSF 2.2. For JSF 2.0 and 2.1 you need to explicitly specify the ID of the in the render of the <f:ajax>

Says BalusC here. So in your case you are doing navigation to another page and stucks into that view state bug, ajax=false indicates submit the button without AJAX that's why it works.

Also BalusC suggests to use a script which fixes this bug here.

于 2013-03-31T19:28:26.403 回答