问一个问题

老是出这个错误.迷茫死了.不知道大家能不能帮我找一个问题所在.

org.apache.jasper.JasperException: Unable to compile class for JSP: 

An error occurred at line: 27 in the generated java file
The method getJspApplicationContext(ServletContext) is undefined for the type JspFactory

Stacktrace:
 at org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:92)
 at org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:330)
 at org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:423)
 at org.apache.jasper.compiler.Compiler.compile(Compiler.java:317)
 at org.apache.jasper.compiler.Compiler.compile(Compiler.java:295)
 at org.apache.jasper.compiler.Compiler.compile(Compiler.java:282)
 at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:586)
 at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317)
 at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
 at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:103)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
 at com.wsy.Filter.ModifyCode.doFilter(ModifyCode.java:24)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
 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:128)
 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:286)
 at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:857)
 at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:565)
 at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1509)
 at java.lang.Thread.run(Thread.java:619)