jar 包重复导致莫名错误

严重: Servlet.service() for servlet jsp threw exceptionjava.lang.NoSuchFieldError: deferredExpression at org.apache.taglibs.standard.tag.common.core.ForEachSupport.release(ForEachSupport.java:178) at org.apache.jasper.runtime.TagHandlerPool.release(TagHandlerPool.java:166) at org.apache.jsp.WEB_002dINF.pages.sg.msg.chat_jsp._jspDestroy(chat_jsp.java:54) at org.apache.jasper.runtime.HttpJspBase.destroy(HttpJspBase.java:61) at org.apache.jasper.servlet.JspServletWrapper.destroy(JspServletWrapper.java:425) at org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:139) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:329) 以后仔细点,两个版本的jstl jar包同时存在,造成冲突,报了无聊的错误 相关资源：Jar包重复查找工具