Question

当点击“GoBack”按钮时，displaypage.xhtml没有重定向到frontpage.xhtml的任何原因？浏览器从frontpage.xhtml重定向到displaypage.xhtml，但不是相反。

由于

frontpage.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:ui="http://java.sun.com/jsf/facelets"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:f="http://java.sun.com/jsf/core">

<ui:composition template="WEB-INF/templates/origin.xhtml">
    <ui:define name="content">
        <f:view>
            <h:form>
                <h:panelGrid>
                    <h:inputText value="#{user.name}" required = "true"/>
                </h:panelGrid>
                <h:commandButton

                    action="#{user.testcase2()}"
                    value="Search"></h:commandButton>
            </h:form>
            </f:view>


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

displaypage.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:ui="http://java.sun.com/jsf/facelets"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:f="http://java.sun.com/jsf/core">

<ui:composition template="/WEB-INF/templates/origin.xhtml">
    <ui:define name="content">
       <h:panelGrid>
        <h:outputText value="#{user.testclass.inputName}"/>
        <h:commandButton id="back" value="GoBack" action="frontpage"/>
       </h:panelGrid>
    </ui:define>
</ui:composition>
</html>

面-config.xml中

<?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_2_0.xsd"
    version="2.0">

    <navigation-rule>
        <from-view-id>/frontpage.xhtml</from-view-id>
        <navigation-case>
            <from-action>#{user.testcase2()}</from-action>
            <from-outcome>test2</from-outcome>
           <to-view-id>/displaypage.xhtml</to-view-id>
            <redirect/>
        </navigation-case>
         </navigation-rule>
   <navigation-rule>
    <from-view-id>/displaypage.xhtml</from-view-id>
            <navigation-case>
                <from-outcome>frontpage</from-outcome>
                <to-view-id>/frontpage.xhtml</to-view-id>
                <redirect/>
        </navigation-case>
    </navigation-rule>
</faces-config>

Answer 1

<h:commandButton>代码必须覆盖<h:form>代码才能生效，尤其是action <h:commandButton>属性包含动态导航时（例如：{{1} }}）。

否则，如果这个最后一个标签只有一个静态导航，（例如：action=#{user.testcase2()}，那么只需使用action="frontpage" )作为M. @BalusC说，因为它不支持动态导航。

导航规则描述在faces-config.xml中无法正常运行

1 个答案: