Edward, <td><c:expr value="$color.name"/></td> <td><c:expr value="$color.RGBValue"/></td>
There is no JSTL tag called expr in the JSTL core library. Did you mean to use c:out?
-Richard
At 08:03 PM 12/31/2004, you wrote:
I have downloaded Standard-1.1:JSTL 1.1(2.0), I put jstl.jar and standard.jar into directory of test/WEB-INF/lib,and put c.tld into directory of test/WEB-INF/tlds,web.xml is follows: <?xml version="1.0" encoding="ISO-8859-1"?> <!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd";> <web-app> <description> examples </description> <display-name>JSPtagWAR</display-name> <listener> <listener-class> jsptl.examples.startup.JSPTLExamplesInit </listener-class> </listener> <taglib> <taglib-uri>http://java.sun.com/jsp/jstl/core</taglib-uri> <taglib-location>/WEB-INF/tlds/c.tld</taglib-location> </taglib> </web-app>
I write a jsp file,named forEachColor.jsp: <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"; %> How does one remember colors of the rainbow?
NameRGB Value then I start Tomcat5.0,I visite this page: http://localhost:8080/test/forEachColor.jsp But I got errors,why raised errors? How to modify it? Thanks! org.apache.jasper.JasperException: /forEachColor.jsp(12,16) No tag "expr" defined in tag library imported with prefix "c" at org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:83) at org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:363) at org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:233) at org.apache.jasper.compiler.Parser.parseCustomTag(Parser.java:1329) at org.apache.jasper.compiler.Parser.parseElements(Parser.java:1568) at org.apache.jasper.compiler.Parser.parseBody(Parser.java:1769) at org.apache.jasper.compiler.Parser.parseOptionalBody(Parser.java:1083) at org.apache.jasper.compiler.Parser.parseCustomTag(Parser.java:1381) at org.apache.jasper.compiler.Parser.parseElements(Parser.java:1568) at org.apache.jasper.compiler.Parser.parse(Parser.java:166) at org.apache.jasper.compiler.ParserController.parse(ParserController.java:269) at org.apache.jasper.compiler.ParserController.parse(ParserController.java:155) at org.apache.jasper.compiler.ParserController.parse(ParserController.java:142) at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:245) at org.apache.jasper.compiler.Compiler.compile(Compiler.java:448) at org.apache.jasper.compiler.Compiler.compile(Compiler.java:434) at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:571) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:303) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:293) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:240) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:288) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:294) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:490) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1020) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:196) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:490) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1020) at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2625) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151) at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:171) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:149) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:149) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:490) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1020) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:163) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:490) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1020) at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:196) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:612) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:430) at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:565) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:623) at java.lang.Thread.run(Thread.java:536)
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