迁移到PF 5.0后，在单击p：commandlink或p：commandButton后，IE浏览器上的导航功能无效，而且未加载新页面，而不是控制台上有消息： XML5635：只允许在文件开头使用XML声明。行：1，第18列
这仅适用于Firefox Chrome上的IE，它可以正常工作。
第一个文件：
<!DOCTYPE html>
<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:p="http://primefaces.org/ui"
xmlns:ui="http://java.sun.com/jsf/facelets">
<h:head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title>.... </title>
<meta name="Description" content="......"/>
<meta name="AUTHOR" content="..."/>
<meta name="KEYWORDS" content="....."/>
<h:outputText
value="<!--[if !IE]> --> <link rel="stylesheet" type="text/css" href="#{sessionBean.getUrlPrefix()}html/style.css" /> <!-- <![endif]-->"
escape="false" />
<h:outputText
value="<!--[if IE ]><link rel="stylesheet" href="#{sessionBean.getUrlPrefix()}html/style-ie.css" /> <![endif]-->"
escape="false" />
</h:head>
<h:body>
<div id="top">
<ui:insert name="header">
<ui:include src="header.xhtml"/>
</ui:insert>
<div id="CONTENT"><div id="TRESC">
<ui:insert name="leftBar">
<ui:include src="leftbar.xhtml"/>
</ui:insert>
<div style="width: 700px; float: left;">
<f:metadata>
<f:viewParam name="CalendarSet" value="#{sessionBean.calendarSet}" />
</f:metadata>
<h1 style=" text-align: center; font-size: 30px;">#{tr['chooseCalendarType']}</h1>
<p:accordionPanel multiple="true">
<p:tab title="#{calendarTypesHandlingBean.typeT1Name}" rendered="#{calendarTypesHandlingBean.isActiveT1()}">
<h:form>
<p:dataGrid value="#{calendarTypesHandlingBean.calendariumT1}" var="calendarium" columns="2" >
<p:panel >
<h:panelGrid columns="1" style="text-align:center;" >
<p:commandLink action="#{calendarTypesHandlingBean.calendariumChosen(calendarium.id)}">
<p:graphicImage width="250" id="image_num" value="#{calendarium.imageUrl}" />
</p:commandLink>
<p:tooltip style="background: grey; color:white;" for="image_num" showEffect="fade" hideEffect="fade">
<h:outputText escape="false" value="#{calendarium.name}"/>
</p:tooltip>
<p:commandButton action="#{calendarTypesHandlingBean.calendariumChosen(calendarium.id)}" value="#{tr['choose']}"/>
</h:panelGrid>
</p:panel>
</p:dataGrid>
</h:form>
</p:tab>
<p:tab title="#{calendarTypesHandlingBean.typeT2Name}" rendered="#{calendarTypesHandlingBean.isActiveT2()}">
<h:form>
<p:dataGrid style="border: none;" value="#{calendarTypesHandlingBean.calendariumT2}" var="calendarium" columns="2" >
<p:panel style="width: 320px; text-align:center;" >
<h:panelGrid columns="1" styleClass="backgroudless" style="text-align:center;" >
<p:commandLink action="#{calendarTypesHandlingBean.calendariumChosen(calendarium.id)}">
<p:graphicImage width="250" id="image_num" value="#{calendarium.imageUrl}" />
</p:commandLink>
<p:commandButton action="#{calendarTypesHandlingBean.calendariumChosen(calendarium.id)}" value="#{tr['choose']}"/>
</h:panelGrid>
</p:panel>
</p:dataGrid>
</h:form>
</p:tab>
<p:tab title="#{calendarTypesHandlingBean.typeT3Name}" rendered="#{calendarTypesHandlingBean.isActiveT3()}">
<h:form>
<p:dataGrid styleClass="backgroudless" style="border: none;" value="#{calendarTypesHandlingBean.calendariumT3}" var="calendarium" columns="2" >
<p:panel styleClass="backgroudless" style="width: 320px; text-align:center;" >
<h:panelGrid columns="1" styleClass="backgroudless" style="text-align:center;" >
<p:commandLink action="#{calendarTypesHandlingBean.calendariumChosen(calendarium.id)}">
<p:graphicImage width="250" id="image_num" value="#{calendarium.imageUrl}" />
</p:commandLink>
<p:commandButton action="#{calendarTypesHandlingBean.calendariumChosen(calendarium.id)}" value="#{tr['choose']}"/>
</h:panelGrid>
</p:panel>
</p:dataGrid>
</h:form>
</p:tab>
<p:tab title="#{calendarTypesHandlingBean.typeT4Name}" rendered="#{calendarTypesHandlingBean.isActiveT4()}">
<h:form>
<p:dataGrid styleClass="backgroudless" style="border: none;" value="#{calendarTypesHandlingBean.calendariumT4}" var="calendarium" columns="2" >
<p:panel styleClass="backgroudless" style="width: 320px; text-align:center;" >
<h:panelGrid columns="1" styleClass="backgroudless" style="text-align:center;" >
<p:commandLink action="#{calendarTypesHandlingBean.calendariumChosen(calendarium.id)}">
<p:graphicImage width="250" id="image_num" value="#{calendarium.imageUrl}" />
</p:commandLink>
<p:commandButton action="#{calendarTypesHandlingBean.calendariumChosen(calendarium.id)}" value="#{tr['choose']}"/>
</h:panelGrid>
</p:panel>
</p:dataGrid>
</h:form>
</p:tab>
<p:tab title="#{calendarTypesHandlingBean.typeT5Name}" rendered="#{calendarTypesHandlingBean.isActiveT5()}">
<h:form>
<p:dataGrid styleClass="backgroudless" style="border: none;" value="#{calendarTypesHandlingBean.calendariumT5}" var="calendarium" columns="2" >
<p:panel styleClass="backgroudless" style="width: 320px; text-align:center;" >
<h:panelGrid columns="1" styleClass="backgroudless" style="text-align:center;" >
<p:commandLink action="#{calendarTypesHandlingBean.calendariumChosen(calendarium.id)}">
<p:graphicImage width="250" id="image_num" value="#{calendarium.imageUrl}" />
</p:commandLink>
<p:commandButton action="#{calendarTypesHandlingBean.calendariumChosen(calendarium.id)}" value="#{tr['choose']}"/>
</h:panelGrid>
</p:panel>
</p:dataGrid>
</h:form>
</p:tab>
</p:accordionPanel>
</div>
</div>
<ui:insert name="footer">
<ui:include src="footer.xhtml"/>
</ui:insert>
</div></div>
</h:body>
</html>
和第二个：
<!DOCTYPE html>
<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:p="http://primefaces.org/ui"
xmlns:ui="http://java.sun.com/jsf/facelets">
<h:head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title>...</title>
<meta name="Description" content="..."/>
<meta name="AUTHOR" content="..."/>
<meta name="KEYWORDS" content="..."/>
<h:outputText
value="<!--[if !IE]> --> <link rel="stylesheet" type="text/css" href="#{sessionBean.getUrlPrefix()}html/style.css" /> <!-- <![endif]-->"
escape="false" />
<h:outputText
value="<!--[if IE ]><link rel="stylesheet" href="#{sessionBean.getUrlPrefix()}html/style-ie.css" /> <![endif]-->"
escape="false" />
</h:head>
<h:body>
<div id="top">
<ui:insert name="header">
<ui:include src="header.xhtml"/>
</ui:insert>
<div id="CONTENT"><div id="TRESC">
<ui:insert name="leftBar">
<ui:include src="leftbar.xhtml"/>
</ui:insert>
<div style="float: left;width: 730px;">
<h1 style=" text-align: center; font-size: 30px;">#{tr['chooseCalendarBackground']}</h1>
<h:form>
<p:dataGrid columns="3" style=" border-style: none;" value="#{backgroundSelectorBean.backgrounds}" var="item" >
<p:panel style="text-align:center; width: 220px; " >
<h:panelGrid columns="1" style="width:100%; border: 0; text-align: center;" >
<p:commandLink action="#{backgroundSelectorBean.selectedBackground(item.backgroundId, item.backgroundPatch)}">
<p:graphicImage width="200" id="image_num" value="#{item.backgroundThumbURL}" />
</p:commandLink>
<p:commandButton action="#{backgroundSelectorBean.selectedBackground(item.backgroundId, item.backgroundPatch)}" value="#{tr['choose']}" />
</h:panelGrid>
</p:panel>
</p:dataGrid>
</h:form>
<p:button outcome="back" value="#{tr['back']}">
</p:button>
</div>
</div>
<ui:insert name="footer">
<ui:include src="footer.xhtml"/>
</ui:insert>
</div></div>
</h:body>
</html>
我很感激你的帮助。