每次发生错误时,我都会在错误页面中收到以下错误消息。
这是我的page.xhtml:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.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:ui="http://java.sun.com/jsf/facelets"
xmlns:p="http://primefaces.org/ui">
<f:view contentType="text/html">
<h:head>
<f:facet name="first">
<meta http-equiv="X-UA-Compatible" content="EmulateIE8" />
<meta content='text/html; charset=UTF-8' http-equiv="Content-Type"/>
<title>Esprit4Olap</title>
</f:facet>
<link type="text/css" rel="stylesheet" href="#{request.contextPath}/css/default.css" />
<link type="text/css" rel="stylesheet" href="#{request.contextPath}/css/syntaxhighlighter/syntaxhighlighter.css" />
<style type="text/css">
.nestedUnit {
border:0px none !important;
}
.ui-layout-center .ui-layout-resizer {
border:1px solid #A8A8A8 !important;
}
.ui-tree-item span {
float:left !important;
}
.ui-tree {
border:0px none !important;
}
.ui-tabs {
border:0px none !important;
}
</style>
</h:head>
<h:body>
<p:layoutUnit position="west" size="200" resizable="true" collapsible="true" header="TreeNode">
<h:form>
<p:tree value="#{SchemaMan.shemaBoxses}" var="SchemaMan" selectionMode="Singel" selection="#{SchemaMan.shemaBoxse}" style="width:170px">
<p:treeNode icon="ui-icon-mail-closed">
<h:outputText value="SchemaMan"/>
</p:treeNode>
<p:treeNode type="i" icon="ui-icon-mail-closed">
<h:outputText value="SchemaMan"/>
</p:treeNode>
<p:treeNode type="s" icon="ui-icon-transfer-e-w">
<h:outputText value="SchemaMan"/>
</p:treeNode>
<p:treeNode type="t" icon="ui-icon-trash">
<h:outputText value="SchemaMan"/>
</p:treeNode>
<p:treeNode type="j" icon="ui-icon-alert">
<h:outputText value="SchemaMan"/>
</p:treeNode>
</p:tree>
</h:form>
</p:layoutUnit>
<p:layoutUnit position="center">
<p:layout>
<p:layoutUnit position="north" size="50%" resizable="true" styleClass="nestedUnit">
<p:tabView>
<p:tab title="Schema">
<h:form>
<p:panelGrid columns="2">
<p:inputText id="Schemaname" required="true" label="SchemaName" size="40" value="#{SchemaMan.nameSchema}" />
<p:inputText id="DescSchema" required="true" label="DescSchema" size="40" value="#{SchemaMan.descSchema}" />
<p:inputText id="RoleSchema" required="true" label="RoleSchema" size="40" value="#{SchemaMan.roleSchema}" />
<p:inputText id="CaptionSchema" required="true" label="CaptionSchema" size="40" value="#{SchemaMan.captionSchema}" />
</p:panelGrid>
<p:commandButton value="Add" type="button" ></p:commandButton>
</h:form>
</p:tab>
</p:tabView>
</p:layoutUnit>
</p:layout>
</p:layoutUnit>
</h:body>
</f:view>
</html>
但是,错误本身与javax.faces.component.UIOutput无关。它可能只是其中一个托管bean中的任何错误。 我得到了这个错误的例外:
javax.servlet.ServletException: javax.faces.component.UIOutput cannot be cast to org.primefaces.component.layout.Layout
javax.faces.webapp.FacesServlet.service(FacesServlet.java:606)
感谢任何帮助。
谢谢,
我就像你告诉我的那样:
<h:body>
<p:layout>
<p:layoutUnit position="west" size="200" resizable="true" collapsible="true" header="TreeNode">
<h:form>
<p:tree value="#{SchemaMan.shemaBoxses}" var="SchemaMan" selectionMode="Singel" selection="#{SchemaMan.shemaBoxse}" style="width:170px">
<p:treeNode icon="ui-icon-mail-closed">
<h:outputText value="SchemaMan"/>
</p:treeNode>
<p:treeNode type="i" icon="ui-icon-mail-closed">
<h:outputText value="SchemaMan"/>
</p:treeNode>
<p:treeNode type="s" icon="ui-icon-transfer-e-w">
<h:outputText value="SchemaMan"/>
</p:treeNode>
<p:treeNode type="t" icon="ui-icon-trash">
<h:outputText value="SchemaMan"/>
</p:treeNode>
<p:treeNode type="j" icon="ui-icon-alert">
<h:outputText value="SchemaMan"/>
</p:treeNode>
</p:tree>
</h:form>
</p:layoutUnit>
</p:layout>
<p:layout>
<p:layoutUnit position="center">
<p:layoutUnit position="north" size="50%" resizable="true" styleClass="nestedUnit">
<p:tabView>
<p:tab title="Schema">
<h:form>
<p:panelGrid columns="2">
<p:inputText id="Schemaname" required="true" label="SchemaName" size="40" value="#{SchemaMan.nameSchema}" />
<p:inputText id="DescSchema" required="true" label="DescSchema" size="40" value="#{SchemaMan.descSchema}" />
<p:inputText id="RoleSchema" required="true" label="RoleSchema" size="40" value="#{SchemaMan.roleSchema}" />
<p:inputText id="CaptionSchema" required="true" label="CaptionSchema" size="40" value="#{SchemaMan.captionSchema}" />
</p:panelGrid>
<p:commandButton value="Add" type="button" ></p:commandButton>
</h:form>
</p:tab>
</p:tabView>
</p:layoutUnit>
</p:layoutUnit>
</p:layout>
</h:body>
但我现在得到这个例外: 例外
javax.servlet.ServletException:JBAS011048:无法构造组件实例 javax.faces.webapp.FacesServlet.service(FacesServlet.java:606)!!
答案 0 :(得分:0)
你有两个p:layout
?每个p:layoutUnit
都应该在整个p:layout
内。考虑到您可以在p:layout
内嵌套p:layoutUnit
以制作更复杂的布局(当然,每p:layout
HAS 都有{{1} }}:
p:layoutUnit position="center"
请记住,如果您为整个页面使用p:layout,那么使用<p:layout>
<p:layoutUnit position="west" size="200">
...
</p:layoutUnit>
<p:layoutUnit position="center">
<p:layout>
<p:layoutUnit position="north" size="100">
...
</p:layoutUnit>
<p:layoutUnit position="center">
...
</p:layoutUnit>
</p:layout>
</p:layoutUnit>
...
</p:layout>
可能会更好。干杯!