spring 관련 프로젝트 생성하다가 아래와 같은 에러 발견!!



2011. 11. 10 오후 2:26:29 org.apache.catalina.core.StandardWrapperValve invoke
심각: Servlet.service() for servlet spring threw exception
java.lang.ClassNotFoundException: javax.servlet.jsp.jstl.core.Config
 at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680)
 at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526)
 at org.springframework.web.servlet.support.JstlUtils.exposeLocalizationContext(JstlUtils.java:97)
 at org.springframework.web.servlet.view.JstlView.exposeHelpers(JstlView.java:135)
 at org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:211)
 at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:250)
 at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1031)
 at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:815)
 at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:717)
 at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
 at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:291)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
 at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)
 at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
 at java.lang.Thread.run(Thread.java:619)


검색결과 라이브러리가 추가되지 않아서 발생 jstl-1.2.jar 파일을 라이브러리에 추가해주면 해결