Hello, I am doing some UI customizations on nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-web/nifi-web-ui folder for our needs.
As part of this, I have introduced JSTL tablib in canvas.jsp file. <%@ page contentType="text/html" pageEncoding="UTF-8" session="false" %> <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"; %> After the changes, I built and started the nifi. When I access http://localhost:8080/nifi link, I am getting the following exception. HTTP ERROR 500 Problem accessing /nifi/. Reason: Server Error Caused by: javax.servlet.ServletException: org.apache.jasper.JasperException: The absolute uri: http://java.sun.com/jsp/jstl/core cannot be resolved in either web.xml or the jar files deployed with this application at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:138) at org.eclipse.jetty.server.handler.gzip.GzipHandler.handle(GzipHandler.java:561) at org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:52) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132) at org.eclipse.jetty.server.Server.handle(Server.java:564) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:320) at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:251) at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:279) at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:110) at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:124) at org.eclipse.jetty.util.thread.Invocable.invokePreferred(Invocable.java:122) at org.eclipse.jetty.util.thread.strategy.ExecutingExecutionStrategy.invoke(ExecutingExecutionStrategy.java:58) at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:201) at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:133) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:672) at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:590) at java.lang.Thread.run(Thread.java:748) Caused by: org.apache.jasper.JasperException: The absolute uri: http://java.sun.com/jsp/jstl/core cannot be resolved in either web.xml or the jar files deployed with this application at org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:55) at org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:293) at org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:80) at org.apache.jasper.compiler.TagLibraryInfoImpl.generateTldResourcePath(TagLibraryInfoImpl.java:251) at org.apache.jasper.compiler.TagLibraryInfoImpl.<init>(TagLibraryInfoImpl.java:122) at org.apache.jasper.compiler.Parser.parseTaglibDirective(Parser.java:434) at org.apache.jasper.compiler.Parser.parseDirective(Parser.java:492) at org.apache.jasper.compiler.Parser.parseElements(Parser.java:1448) at org.apache.jasper.compiler.Parser.parse(Parser.java:145) at org.apache.jasper.compiler.ParserController.doParse(ParserController.java:244) at org.apache.jasper.compiler.ParserController.parse(ParserController.java:105) at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:201) at org.apache.jasper.compiler.Compiler.compile(Compiler.java:372) at org.apache.jasper.compiler.Compiler.compile(Compiler.java:349) at org.apache.jasper.compiler.Compiler.compile(Compiler.java:333) at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:600) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:368) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:385) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:329) at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:841) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1634) at org.apache.nifi.web.server.JettyServer$2.doFilter(JettyServer.java:1042) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1621) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:541) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:566) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:190) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1593) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:188) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1239) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:168) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:481) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1562) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:166) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1141) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) at org.eclipse.jetty.server.Dispatcher.forward(Dispatcher.java:203) at org.eclipse.jetty.server.Dispatcher.forward(Dispatcher.java:73) at org.eclipse.jetty.server.ResourceService.sendWelcome(ResourceService.java:412) at org.eclipse.jetty.server.ResourceService.doGet(ResourceService.java:253) at org.eclipse.jetty.servlet.DefaultServlet.doGet(DefaultServlet.java:456) at javax.servlet.http.HttpServlet.service(HttpServlet.java:687) at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:833) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1634) at org.apache.nifi.web.server.JettyServer$2.doFilter(JettyServer.java:1042) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1621) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:541) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:190) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1593) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:188) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1239) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:168) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:481) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1562) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:166) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1141) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:118) ... 16 more Any pointers? *Note *: I am using Apache-nifi 1.8.0 SNAPSHOT version Thanks in advance. Regards, Karthik
