JSF：javax.faces.FacesException：无法添加相同的组件两次：vaz4n2-retrieve-update [英] JSF: javax.faces.FacesException: Cannot add the same component twice: vaz4n2-retrieve-update
问题描述
无法添加相同的组件两次
在控制台栏中显示为：
javax.faces.FacesException：无法添加相同组件两次：v8z4ho2-retrieve-update
我的JSF代码
<？xml version ='1.0'encoding ='UTF-8'？>
<！DOCTYPE html PUBLIC - // W3C // DTD XHTML 1.0 Transitional // ENhttp://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：f =http://java.sun.com/jsf/core
xmlns：h =http://java.sun.com/jsf/html
xmlns：icecore =http://www.icefaces.org/icefaces/core
xmlns：ace =http://www.icefaces.org/icefaces/components
xmlns：ice =http： //www.icesoft.com/icefaces/component>
< h：head>
< title>图表< / title>
< link rel =stylesheettype =text / csshref =./ xmlhttp / css / rime / rime.css/>
< / h：head>
< h：body styleClass =ice-skin-rime>
< h：form id =canvasForm>
< ace：chart id =chartanimated =falsevalue =＃{chartBean.barData}
stackSeries =falsedefaultAxesConfig =＃{chartBean.barDemoDefaultAxis}
xAxis =＃{chartBean.barDemoXAxis}yAxis =＃{chartBean.barDemoYAxis}
legend =truelegendPlacement =OUTSIDE_GRIDhighlighter =true
highlighterLocation =N highlighterShowMarker =false
highlighterBringSeriesToFront =true
widgetVar =barChart/>
< / h：form>
< / h：body>
< / html>
如何纠正此错误？帮助我。
在ICEFaces论坛中，我发现很多人都有这个问题。如果使用Tomcat 7.0.42，请尝试使用Tomcat 7.0.41，看看它是否可行。还要检查是否在同一个类路径中复制了icefaces jar（或icefaces.jar和icefaces-ee.jar）。该帖子的链接是：
http://www.icesoft.org/JForum/posts/list/22121.page#sthash.qxEkXX1Q.dpbs
I am a JSF beginner. I try to implement ICEfaces 3.0 component in Eclipse 4.2 (Juno). I had implemented & run it using Apache Tomcat 7.0. It showing the following error in window:
Cannot add the same component twice
In console bar it shows as :
javax.faces.FacesException: Cannot add the same component twice: v8z4ho2-retrieve-update
My JSF Code
<?xml version='1.0' encoding='UTF-8' ?>
<!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:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:icecore="http://www.icefaces.org/icefaces/core"
xmlns:ace="http://www.icefaces.org/icefaces/components"
xmlns:ice="http://www.icesoft.com/icefaces/component" >
<h:head>
<title>Chart</title>
<link rel="stylesheet" type="text/css" href="./xmlhttp/css/rime/rime.css"/>
</h:head>
<h:body styleClass="ice-skin-rime">
<h:form id="canvasForm">
<ace:chart id="chart" animated="false" value="#{chartBean.barData}"
stackSeries="false" defaultAxesConfig="#{chartBean.barDemoDefaultAxis}"
xAxis="#{chartBean.barDemoXAxis}" yAxis="#{chartBean.barDemoYAxis}"
legend="true" legendPlacement="OUTSIDE_GRID" highlighter="true"
highlighterLocation="N" highlighterShowMarker="false"
highlighterBringSeriesToFront="true"
widgetVar="barChart" />
</h:form>
</h:body>
</html>
How to rectify this error? Help me out.
In ICEFaces forum I've found many people with this problem. If you are using Tomcat 7.0.42, try Tomcat 7.0.41 instead and see if it works. Also check if you have icefaces jar duplicated (or icefaces.jar and icefaces-ee.jar) in the same classpath. The link to the post is:
http://www.icesoft.org/JForum/posts/list/22121.page#sthash.qxEkXX1Q.dpbs
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