在 2.13.4 版本中，Camel 配置一切正常。但是迁移到 2.15.1 版本后，我遇到了以下错误：
Caused by: org.springframework.beans.FatalBeanException: Invalid NamespaceHandler class [org.apache.camel.component.cxf.spring.NamespaceHandler] for namespace [http://camel.apache.org/schema/cxf]: problem with handler class file or dependent class; nested exception is java.lang.UnsupportedClassVersionError: JVMCFRE003 bad major version; class=org/apache/camel/component/cxf/spring/NamespaceHandler, offset=6
at org.springframework.beans.factory.xml.DefaultNamespaceHandlerResolver.resolve(DefaultNamespaceHandlerResolver.java:140)
at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1422)
at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1417)
at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.parseBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:174)
at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.doRegisterBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:144)
at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.registerBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:100)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.registerBeanDefinitions(XmlBeanDefinitionReader.java:510)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:392)
... 45 more
Caused by: java.lang.UnsupportedClassVersionError: JVMCFRE003 bad major version; class=org/apache/camel/component/cxf/spring/NamespaceHandler, offset=6
在 Camel 配置中，我正在使用以下模式：
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:cxf="http://camel.apache.org/schema/cxf"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://camel.apache.org/schema/spring http://camel.apache.org/schema/spring/camel-spring.xsd
http://camel.apache.org/schema/cxf http://camel.apache.org/schema/cxf/camel-cxf.xsd">
<cxf:cxfEndpoint id="soapProxy"
address="/data" endpointName="s:dataManagementSOAP"
serviceName="s:dataManagement"
wsdlURL="/path/to/proxy.wsdl"
xmlns:s="http://www.test.com/integration/referencedata" />
......
bean definitions
.....