java.lang.NoSuchMethodError: javax.servlet.JSP.PageContext.getELContext()LJAVAx/el/ELContext

ERROR [http-8080-Processor16] (StandardWrapperValve.java:253) - Servlet.service() for servlet jsp threw exception
 java.lang.AbstractMethodError: javax.servlet.jsp.PageContext.getVariableResolver()Ljavax/servlet/jsp/el/VariableResolver;
 at org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate(PageContextImpl.java:932)
 at org.apache.jsp.oa.jsps.ll.user.main_jsp._jspService(main_jsp.java:154)
 at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
 at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)
 at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
 at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at com.oa.beans.filter.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:122)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
 at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
 at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
 at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
 at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
 at java.lang.Thread.run(Thread.java:595)

 

造成这种错的原因就是JDK版本过低，或者说JSTL版本过高。

 

解决办法：

　　JDK1.6  对应  JSTL1.2或更低

　　JDK1.5  对应  JSTL1.1或更低

 

注：jstl1.1版本由2个必要包构成：standard-1.1.jar和JSTL1.1.jar；而jstl1.2版本只有一个必要包JSTL1.2.jar。