您好我正在开发一个使用struts2和hibernate的项目。这是令我感到困惑的错误：
Struts检测到未处理的异常：
消息：javax.servlet.jsp.tagext.TagLibraryValidator 使用javax / servlet的/ JSP / tagext / TagLibraryValidator java.lang.NoClassDefFoundError： 使用javax / servlet的/ JSP / tagext / TagLibraryValidator 文件：java / net / URLClassLoader.java行号：372
完整的堆栈跟踪如下：
Aug 15, 2016 12:41:43 PM org.apache.catalina.core.ApplicationDispatcher invoke
SEVERE: Servlet.service() for servlet jsp threw exception
java.lang.ClassNotFoundException: javax.servlet.jsp.tagext.TagLibraryValidator
at java.net.URLClassLoader$1.run(URLClassLoader.java:372)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:455)
at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
at java.net.URLClassLoader$1.run(URLClassLoader.java:367)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:455)
at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
at java.net.URLClassLoader$1.run(URLClassLoader.java:367)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1251)
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1166)
at org.apache.jasper.compiler.TagLibraryInfoImpl.createValidator(TagLibraryInfoImpl.java:347)
at org.apache.jasper.compiler.TagLibraryInfoImpl.<init>(TagLibraryInfoImpl.java:194)
at org.apache.jasper.compiler.Parser.parseTaglibDirective(Parser.java:421)
at org.apache.jasper.compiler.Parser.parseDirective(Parser.java:479)
at org.apache.jasper.compiler.Parser.parseElements(Parser.java:1435)
at org.apache.jasper.compiler.Parser.parse(Parser.java:139)
at org.apache.jasper.compiler.ParserController.doParse(ParserController.java:227)
at org.apache.jasper.compiler.ParserController.parse(ParserController.java:100)
at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:199)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:356)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:336)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:323)
at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:585)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:363)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:720)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:466)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:391)
at org.apache./catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:318)
at org.apache.struts2.dispatcher.ServletDispatcherResult.doExecute(ServletDispatcherResult.java:164)
at org.apache.struts2.dispatcher.StrutsResultSupport.execute(StrutsResultSupport.java:188)
at com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:369)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:273)
at org.apache.struts2.interceptor.DeprecationInterceptor.intercept(DeprecationInterceptor.java:41)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:256)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:167)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:265)
at org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:76)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:191)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:73)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at org.apache.struts2.interceptor.DateTextFieldInterceptor.intercept(DateTextFieldInterceptor.java:125)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:91)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:253)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:139)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:193)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:189)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)
at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54)
at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:564)
at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:81)
at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:528)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1099)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:670)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1520)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1476)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
Here is the list of jars included in Web-Inf/Lib Part 2
/timesheet/WebContent/WEB-INF/lib/antlr-2.7.7.jar
/timesheet/WebContent/WEB-INF/lib/asm-5.0.2.jar
/timesheet/WebContent/WEB-INF/lib/asm-commons-5.0.2.jar
/timesheet/WebContent/WEB-INF/lib/com.sun.tools.xjc_2.2.0.jar
/timesheet/WebContent/WEB-INF/lib/com.sun.xml.bind_2.2.0.v201004141950.jar
/timesheet/WebContent/WEB-INF/lib/commons-beanutils-1.9.0.jar
/timesheet/WebContent/WEB-INF/lib/commons-codec-1.5.jar
/timesheet/WebContent/WEB-INF/lib/commons-collections-3.2.1.jar
/timesheet/WebContent/WEB-INF/lib/commons-digester-2.1.jar
/timesheet/WebContent/WEB-INF/lib/commons-fileupload-1.3.1.jar
/timesheet/WebContent/WEB-INF/lib/commons-io-2.2.jar
/timesheet/WebContent/WEB-INF/lib/commons-javaflow-20060411.jar
/timesheet/WebContent/WEB-INF/lib/commons-lang-2.4.jar
/timesheet/WebContent/WEB-INF/lib/commons-lang3-3.2.jar
/timesheet/WebContent/WEB-INF/lib/commons-lang3-3.4-javadoc.jar
/timesheet/WebContent/WEB-INF/lib/commons-lang3-3.4.jar
/timesheet/WebContent/WEB-INF/lib/commons-logging-1.1.1.jar
/timesheet/WebContent/WEB-INF/lib/dom4j-1.6.1.jar
/timesheet/WebContent/WEB-INF/lib/eclipselink.jar
/timesheet/WebContent/WEB-INF/lib/freemarker-2.3.19.jar
/timesheet/WebContent/WEB-INF/lib/gson-2.3.1.jar
/timesheet/WebContent/WEB-INF/lib/hibernate-commons-annotations-4.0.5.Final.jar
/timesheet/WebContent/WEB-INF/lib/hibernate-core-4.3.9.Final.jar
/timesheet/WebContent/WEB-INF/lib/hibernate-entitymanager-4.3.9.Final.jar
/timesheet/WebContent/WEB-INF/lib/hibernate-jpa-2.1-api-1.0.0.Final.jar
/timesheet/WebContent/WEB-INF/lib/itext-2.1.7.js4.jar
/timesheet/WebContent/WEB-INF/lib/jackson-annotations-2.1.4.jar
/timesheet/WebContent/WEB-INF/lib/jackson-core-2.1.4.jar
/timesheet/WebContent/WEB-INF/lib/jackson-databind-2.1.4.jar
/timesheet/WebContent/WEB-INF/lib/jandex-1.1.0.Final.jar
/timesheet/WebContent/WEB-INF/lib/jasperreports-6.2.0.jar
/timesheet/WebContent/WEB-INF/lib/javassist-3.18.1-GA.jar
/timesheet/WebContent/WEB-INF/lib/javax.activation_1.1.0.v201108011116.jar
/timesheet/WebContent/WEB-INF/lib/javax.mail_1.4.0.v201005080615.jar
/timesheet/WebContent/WEB-INF/lib/javax.persistence_2.1.0.v201304241213.jar
/timesheet/WebContent/WEB-INF/lib/javax.servlet.jsp.jstl-1.2.1.jar
/timesheet/WebContent/WEB-INF/lib/javax.xml.bind_2.2.0.v201105210648.jar
/timesheet/WebContent/WEB-INF/lib/javax.xml.stream_1.0.1.v201004272200.jar
/timesheet/WebContent/WEB-INF/lib/jboss-logging-3.1.3.GA.jar
/timesheet/WebContent/WEB-INF/lib/jboss-logging-annotations-1.2.0.Beta1.jar
/timesheet/WebContent/WEB-INF/lib/jboss-transaction-api_1.2_spec-1.0.0.Final.jar
/timesheet/WebContent/WEB-INF/lib/jstl-1.2.jar
/timesheet/WebContent/WEB-INF/lib/mysql-connector-java-5.1.36-bin.jar
/timesheet/WebContent/WEB-INF/lib/ognl-3.0.6.jar
/timesheet/WebContent/WEB-INF/lib/org.eclipse.persistence.jpa.modelgen_2.5.2.v20140319-9ad6abd.jar
/timesheet/WebContent/WEB-INF/lib/org.eclipse.persistence.jpars_2.5.2.v20140319-9ad6abd.jar
/timesheet/WebContent/WEB-INF/lib/postgresql-9.4.1207.jre6.jar
/timesheet/WebContent/WEB-INF/lib/struts2-convention-plugin-2.3.20.jar
/timesheet/WebContent/WEB-INF/lib/struts2-core-2.3.20.jar
/timesheet/WebContent/WEB-INF/lib/struts2-jasperreports-plugin-2.3.24.1.jar
/timesheet/WebContent/WEB-INF/lib/struts2-json-plugin-2.3.20.jar
/timesheet/WebContent/WEB-INF/lib/validation-api-1.0.0.GA.jar
/timesheet/WebContent/WEB-INF/lib/xwork-core-2.3.20.jar
我已经查看了有关此内容的所有其他帖子，并尝试了其中提到的所有解决方案。与NoClassDefFoundError不同。 非常感谢任何帮助。感谢