HTTP Status 500 - --------------------------------------------------------------------------------

Question

HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception org.apache.jasper.JasperException: javax.servlet.ServletException: java.lang.LinkageError: javax/el/ExpressionFactory org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:535) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:411) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266) javax.servlet.http.HttpServlet.service(HttpServlet.java:803) org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:236) org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:257) org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1183) org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:902) org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:807) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:571) org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:501) javax.servlet.http.HttpServlet.service(HttpServlet.java:690) javax.servlet.http.HttpServlet.service(HttpServlet.java:803)

Answer 1

链接错误。该错误及其所有子类指示某个类依赖于另外一些类，在该类编译之后，被依赖的类改变了其类定义而没有重新编译所有的类，进而引发错误的情况。

检查一下是否是tomcat/lib下的el-api.jar与项目WEB-INF/lib目录下的el-api.jar冲突。追问

这个是jboss 4.2，项目里也没有用这个jar。

追答

是依赖出的错， 慢慢找吧。