JSF：javax.faces.FacesException：无法添加相同的组件两次：vaz4n2-retrieve-update

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问题描述

我是一名JSF初学者。我试图在Eclipse 4.2（Juno）中实现ICEfaces 3.0组件。我已经实施&使用Apache Tomcat 7.0运行它。它在窗口中显示以下错误：

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。

解决方案

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：

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:

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.

解决方案

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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Icefaces

JSF：javax.faces.FacesException：无法添加相同的组件两次：vaz4n2-retrieve-update

问题描述