java.lang.NoSuchFieldError: deferredExpression

异常：

java.lang.NoSuchFieldError: deferredExpression 

type Exception report

message

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

exception

javax.servlet.ServletException: java.lang.NoSuchFieldError: deferredExpression 
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:274) 
javax.servlet.http.HttpServlet.service(HttpServlet.java:803) 
oilsb.filter.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:20)


root cause

java.lang.NoSuchFieldError: deferredExpression 
org.apache.taglibs.standard.tag.common.core.ForEachSupport.release(ForEachSupport.java:178) 
org.apache.jasper.runtime.TagHandlerPool.release(TagHandlerPool.java:166) 
org.apache.jsp.sitetotal_005fdisplay_jsp._jspDestroy(sitetotal_005fdisplay_jsp.java:44) 
org.apache.jasper.runtime.HttpJspBase.destroy(HttpJspBase.java:61) 
org.apache.jasper.servlet.JspServletWrapper.destroy(JspServletWrapper.java:425) 
org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:139) 
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:329) 
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:337) 
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266) 
javax.servlet.http.HttpServlet.service(HttpServlet.java:803) 
oilsb.filter.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:20)

问题原因：jstl标签版本冲突

解决方案以及相关说明：

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>使用的是jstl.jar
<%@ taglib prefix="c" uri="http://java.sun.com/jstl/core_rt"%>使用的是jstl-1.1.2.jar或jstl-1.2.jar

与struts-taglib-1.3.8.jar重复，删除jstl.jar