Tomcat Não Acessa Servlet

Tomcat 8.0.2

pasta WEB/INF/lib:

com.mysql.jdbc_5.1.5.jar

commons-io-2.4.jar

javax.servlet.jsp.jstl-api-1.2.1.jar

jstl-1.2.jar

taglibs-standard-impl-1.2.5.jar

taglibs-standard-spec-1.2.5.jar

todas jar no adicionadas no Build Patch

No Eclipse tudo roda bem, acessa servlet, base de dados, insert, recupera. Tudo beleza.

Quando exporto .war e jogo na pasta webapps do Tomcat então só roda jsp e html. Não dá pra acessar o serlet

Mas o serlet esta setado na web.uml corretamente.

O que pode estar ocorrendo de errado?

Veja o log:

HTTP Status 500 - The absolute uri: http://java.sun.com/jsp/jstl/core cannot be resolved in either web.xml or the jar files deployed with this application
type Exception report

message The absolute uri: http://java.sun.com/jsp/jstl/core cannot be resolved in either web.xml or the jar files deployed with this application

description The server encountered an internal error that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException: The absolute uri: http://java.sun.com/jsp/jstl/core cannot be resolved in either web.xml or the jar files deployed with this application
org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:55)
org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:277)
org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:75)
org.apache.jasper.compiler.TagLibraryInfoImpl.generateTldResourcePath(TagLibraryInfoImpl.java:243)

 org.apache.jasper.compiler.TagLibraryInfoImpl.<init>(TagLibraryInfoImpl.java:124)
 org.apache.jasper.compiler.Parser.parseTaglibDirective(Parser.java:411)
 org.apache.jasper.compiler.Parser.parseDirective(Parser.java:469)
 org.apache.jasper.compiler.Parser.parseElements(Parser.java:1430)
 org.apache.jasper.compiler.Parser.parse(Parser.java:139)
 org.apache.jasper.compiler.ParserController.doParse(ParserController.java:227)
 org.apache.jasper.compiler.ParserController.parse(ParserController.java:100)
 org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:199)
 org.apache.jasper.compiler.Compiler.compile(Compiler.java:356)
 org.apache.jasper.compiler.Compiler.compile(Compiler.java:336)
 org.apache.jasper.compiler.Compiler.compile(Compiler.java:323)
 org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:585)
 org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:363)
 org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396)
 org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340)
 javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
 org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:934)
 org.apache.jsp.imwsaogotardo.listar_jsp._jspService(listar_jsp.java:103)
 org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
 javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
 org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:438)
 org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396)
 org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340)
 javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
 org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

note The full stack trace of the root cause is available in the Apache Tomcat/8.0.22 logs.

Apache Tomcat/8.0.22