I've been tasked with migrating a site from one institution to another. As part of the process we are attempting to update the versions the site uses.
Initially I was asked to use Java 8 with Tomcat 5.5 (on Linux), which led to issues - not to mention Tomcat 5 being 'out of support¹. I have since tried to deploy the webapps to Tomcat 9 with Java 8. Some of the webapps appear to run fine (and resolve the issues I was having with Tomcat5). However, the main app (and 2 similar/smaller web apps) throws a JasperException when I go to the index.jsp - the same web apps deployed to Tomcat 5.5 load without issue. Most of the similar issues I have found have suggested this would be related to the jar files and possibly some sort of conflict. However, the lib structure for tomcat 9 is different to tomcat5 and I'm not sure which jars could be causing this. e.g. https://stackoverflow.com/questions/22552244/tomcat-7-fails-to-compile-jsp- pages I've also tried changing the index.jsp into a simpler (HelloWorld) form - removing any code. And tried deleting the 'work' directory before restarting Tomcat (http://grokbase.com/t/tomcat/users/072v2kf60h/java-permission-denied-error -in-tomcat). In both cases the exception is still thrown. The exception thrown is: --------------------------------------------------------------------------- --------------------------------------------------------------------------- --------------------- org.apache.jasper.JasperException: Unable to compile class for JSP <http://www.coderanch.com/forums/f-50/jsp>: An error occurred at line: [15] in the generated java file: [/opt/tomcat9/work/Catalina/localhost/home/org/apache/jsp/index_jsp.java] The type index_jsp must implement the inherited abstract method JspSourceImports.getPackageImports() An error occurred at line: [15] in the generated java file: [/opt/tomcat9/work/Catalina/localhost/home/org/apache/jsp/index_jsp.java] The type index_jsp must implement the inherited abstract method JspSourceImports.getClassImports() An error occurred at line: [15] in the generated java file: [/opt/tomcat9/work/Catalina/localhost/home/org/apache/jsp/index_jsp.java] The type index_jsp must implement the inherited abstract method JspSourceDependent.getDependants() An error occurred at line: [22] in the generated java file: [/opt/tomcat9/work/Catalina/localhost/home/org/apache/jsp/index_jsp.java] The type Map is not generic; it cannot be parameterized with arguments <String <http://www.coderanch.com/t/410859/java/java/string-stringbuffer-stringbuil der-performance>, Long> An error occurred at line: [24] in the generated java file: [/opt/tomcat9/work/Catalina/localhost/home/org/apache/jsp/index_jsp.java] The type Set is not generic; it cannot be parameterized with arguments <String> An error occurred at line: [26] in the generated java file: [/opt/tomcat9/work/Catalina/localhost/home/org/apache/jsp/index_jsp.java] The type Set is not generic; it cannot be parameterized with arguments <String> An error occurred at line: [29] in the generated java file: [/opt/tomcat9/work/Catalina/localhost/home/org/apache/jsp/index_jsp.java] _jspx_imports_packages cannot be resolved to a variable ... ... ... Stacktrace: org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandl er.java:103) org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java: 213) org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:458) org.apache.jasper.compiler.Compiler.compile(Compiler.java:389) org.apache.jasper.compiler.Compiler.compile(Compiler.java:361) org.apache.jasper.compiler.Compiler.compile(Compiler.java:345) org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java: 603) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java: 369) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:385) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:329) javax.servlet.http.HttpServlet.service(HttpServlet.java:741) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) edu.purdue.cybercenter.ionomics.servlet.PiiMS.doGet(PiiMS.java:83) javax.servlet.http.HttpServlet.service(HttpServlet.java:634) javax.servlet.http.HttpServlet.service(HttpServlet.java:741) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹‹ ‹‹‹‹‹‹‹‹‹‹ This message and any attachment are intended solely for the addressee and may contain confidential information. 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