Question

我是JSF的初学者。我尝试在Eclipse 4.2（Juno）中实现ICEfaces 3.0组件。我实施了＆amp;使用Apache Tomcat 7.0运行它。它在窗口中显示以下错误：

无法再添加两次相同的组件

在控制台栏中显示为：

javax.faces.FacesException: Cannot add the same component twice: v8z4ho2-retrieve-update

我的JSF代码

<?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>

如何纠正此错误？帮助我。

Answer 1

在ICEFaces论坛上，我发现很多人都有这个问题。如果您使用的是Tomcat 7.0.42，请尝试使用Tomcat 7.0.41，看看它是否有效。还要检查你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

Answer 2

通过将icefaces版本从3.3.0恢复到3.0.1来修复：

    <!-- Ices Dependencies -->
    <dependency>
        <groupId>org.icefaces</groupId>
        <artifactId>icefaces</artifactId>
        <version>3.0.1</version>
    </dependency>

    <dependency>
        <groupId>org.icefaces</groupId>
        <artifactId>icefaces-ace</artifactId>
        <version>3.0.1</version>
    </dependency>

    <dependency>
        <groupId>org.icefaces</groupId>
        <artifactId>icefaces-compat</artifactId>
        <version>3.0.1</version>
    </dependency>

    <dependency>
        <groupId>org.icepush</groupId>
        <artifactId>icepush</artifactId>
        <version>3.1.0</version>
    </dependency>

JSF：javax.faces.FacesException：无法两次添加相同的组件：vaz4n2-retrieve-update

2 个答案: