每当我尝试在eclipse中编辑xhtml文件时，它都会显示一个内部错误：
在“处理... xhtml的变量”期间发生内部错误 无法初始化类org.apache.myfaces.shared.config.MyfacesConfig
有没有办法解决这个问题？
堆栈追踪：
java.lang.NoClassDefFoundError: Could not initialize class org.apache.myfaces.shared.config.MyfacesConfig
at oracle.eclipse.tools.webtier.jsf.facelet.DTFacesConfigurator.configureApplication(DTFacesConfigurator.java:683)
at oracle.eclipse.tools.webtier.jsf.facelet.DTFacesConfigurator.configure(DTFacesConfigurator.java:414)
at oracle.eclipse.tools.webtier.jsf.facelet.FaceletCompilerConfigurator.configure(FaceletCompilerConfigurator.java:118)
at oracle.eclipse.tools.webtier.jsf.facelet.FaceletCompilerConfigurator.configure(FaceletCompilerConfigurator.java:97)
at oracle.eclipse.tools.webtier.jsf.facelets.OepeFaceletCompiler.createConfig(OepeFaceletCompiler.java:113)
at oracle.eclipse.tools.webtier.jsf.facelets.OepeFaceletCompiler.compile(OepeFaceletCompiler.java:78)
at oracle.eclipse.tools.webtier.jsf.facelets.FaceletCompileUtil.ensureContext(FaceletCompileUtil.java:35)
at oracle.eclipse.tools.webtier.jsf.dependency.discovery.FaceletDiscoveryParticipant.discover(FaceletDiscoveryParticipant.java:267)
at oracle.eclipse.tools.webtier.jsf.dependency.discovery.FaceletDiscoveryParticipant.discoverFromExistingModel(FaceletDiscoveryParticipant.java:361)
at oracle.eclipse.tools.application.common.services.variables.VariablesController$DocumentRediscoveryJob.runAfterCommands(VariablesController.java:746)
at oracle.eclipse.tools.common.services.concurrency.AbstractJob.run(AbstractJob.java:73)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)