当我启动JavaServer Faces应用程序时出现错误。在浏览器上我得到以下错误:
HTTP Status 500 -
--------------------------------------------------------------------------------
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: javax/servlet/jsp/jstl/core/Config
javax.faces.webapp.FacesServlet.service(FacesServlet.java:229)
root cause
java.lang.NoClassDefFoundError: javax/servlet/jsp/jstl/core/Config
org.apache.myfaces.view.jsp.JspViewDeclarationLanguage.buildView(JspViewDeclarationLanguage.java:91)
org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:77)
org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:241)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:199)
root cause
java.lang.ClassNotFoundException: javax.servlet.jsp.jstl.core.Config
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1676)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1521)
org.apache.myfaces.view.jsp.JspViewDeclarationLanguage.buildView(JspViewDeclarationLanguage.java:91)
org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:77)
org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:241)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:199)
note The full stack trace of the root cause is available in the Apache Tomcat/7.0.12 logs.
在我的Eclipse IDE上发生以下错误:
Nov 19, 2013 8:37:17 PM org.apache.catalina.startup.Catalina start
Information: Server startup in 2518 ms
Nov 19, 2013 8:37:18 PM org.apache.catalina.core.StandardWrapperValve invoke
Schwerwiegend: Servlet.service() for servlet [Faces Servlet] in context with path [/de.xxx.jsf.first] threw exception [javax/servlet/jsp/jstl/core/Config] with root cause
java.lang.ClassNotFoundException: javax.servlet.jsp.jstl.core.Config
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1676)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1521)
at org.apache.myfaces.view.jsp.JspViewDeclarationLanguage.buildView(JspViewDeclarationLanguage.java:91)
at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:77)
at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:241)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:199)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:164)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:462)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:562)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:395)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:250)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:188)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:166)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:302)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
这是如何引起的?如何解决?
答案 0 :(得分:11)
java.lang.ClassNotFoundException:javax.servlet.jsp.jstl.core.Config
ClassNotFoundException
表示运行时类路径中缺少指定的类。当包名称提示时,它是JSTL的一部分。
JSF(更具体地说,Facelets)确实依赖于the <c:xxx>
tags的JSTL。当JSF加载时,它也隐式地加载JSTL核心taglib配置。但是,如果找不到,你就会得到这个例外。
JSTL(和JSF!)通常已经在Java EE容器的框中提供,例如JBoss AS / EAP / WildFly,GlassFish,TomEE,WebLogic等。但是,您使用的是Tomcat,它是一个准系统的JSP / Servlet容器,并且没有随附JSTL。如果升级到例如TomEE不是一个选项,你需要手动提供JSTL和webapp,就像你为JSF做的那样。
只需下载jstl-1.2.jar并将其放在您的webapp的/WEB-INF/lib
文件夹中,以及JSF JAR中。
答案 1 :(得分:2)
好像你缺少了lib。 检查是否在类路径中添加了 JSTL 1.1 - jstl.jar 。
答案 2 :(得分:1)
在pom.xml中添加 jstl maven依赖项:
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>