Missing something with custom tags.
version 1.6.0_20, Java(TM) SE Runtime Environment (build
1.6.0_20-b02), Java HotSpot(TM) 64-Bit Server VM (build 16.3-b01, mixed
mode)
Tomcat: 6.0.26
I'm having trouble with a custom tag and I've tried to reduce the
problem to its most basic form:
/WEB-INF/tags/example.tag:
%@tag %
%@attribute name=xName required=true rtexprvalue=true %
h1xName=${xName}/h1
/jsp/Example.jsp:
!DOCTYPE HTML PUBLIC -//W3C//DTD HTML 4.01//EN
http://www.w3.org/TR/html4/strict.dtd;
%@page language=java contentType=text/html; charset=UTF-8
pageEncoding=UTF-8 %
%@taglib prefix=ex tagdir=/WEB-INF/tags %
html
body
ex:example xName=Testing Example /
/body
/html
I usually get:
You have run into a org.apache.jasper.JasperException:
/jsp/Example.jsp(6,4) Unable to find setter method for attribute: xName
error.
But sometimes I get this:
You have run into a java.lang.ClassNotFoundException:
org.apache.jsp.jsp.Example_jsp error.
Any idea what I'm doing wrong? From what I can see, my code seems to mirror
examples I've found in books and on the web. Intermittent results
suggest a race
condition to me though that seems odd here. I've not had good luck with
google on
this error.
Full stack traces for the exceptions here:
Feb 2, 2011 1:55:02 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet jsp threw exception
org.apache.jasper.JasperException: /jsp/Example.jsp(6,4) Unable to find
setter method for attribute: xName
at
org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:40)
at
org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:407)
at
org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:148)
at
org.apache.jasper.compiler.Generator$GenerateVisitor.evaluateAttribute(Generator.java:2809)
at
org.apache.jasper.compiler.Generator$GenerateVisitor.generateSetters(Generator.java:3032)
at
org.apache.jasper.compiler.Generator$GenerateVisitor.generateCustomDoTag(Generator.java:2452)
at
org.apache.jasper.compiler.Generator$GenerateVisitor.visit(Generator.java:1736)
at org.apache.jasper.compiler.Node$CustomTag.accept(Node.java:1530)
at org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2361)
at
org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2411)
at org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2417)
at org.apache.jasper.compiler.Node$Root.accept(Node.java:495)
at org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2361)
at
org.apache.jasper.compiler.Generator.generate(Generator.java:3440)
at
org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:231)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:347)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:327)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:314)
at
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:592)
at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317)
at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
at
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:555)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at
org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:190)
at
org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:291)
at
org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:774)
at
org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:703)
at
org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:896)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690)
at java.lang.Thread.run(Thread.java:619)
Feb 2, 2011 1:55:29 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet jsp threw exception
java.lang.ClassNotFoundException:
Re: Missing something with custom tags.
2011/2/3 Bill Davidson bill...@gmail.com: Unable to find setter method for attribute: xName error. I think you are bumping into JavaBeans capitalization rules. Rename your attribute to be xname or xxName. IIRC, setXName( ) means that the property name is XName, not xName. More details should be in the JavaBeans spec, http://www.oracle.com/technetwork/java/javase/documentation/spec-136004.html Best regards, Konstantin Kolinko - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Missing something with custom tags.
On 2/2/2011 2:17 PM, Konstantin Kolinko wrote: I think you are bumping into JavaBeans capitalization rules. Rename your attribute to be xname or xxName. That worked. Weird. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Missing something with custom tags.
On 2/2/2011 2:17 PM, Konstantin Kolinko wrote: I think you are bumping into JavaBeans capitalization rules. Rename your attribute to be xname or xxName. That worked! Thanks! I think that's a pretty weird thing. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Missing something with custom tags.
need to see the tld declaration for your tags
and the Java class declared for the tag
pls ping me offline
Martin
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Date: Wed, 2 Feb 2011 14:03:54 -0800
From: bill...@gmail.com
To: users@tomcat.apache.org
Subject: Missing something with custom tags.
version 1.6.0_20, Java(TM) SE Runtime Environment (build
1.6.0_20-b02), Java HotSpot(TM) 64-Bit Server VM (build 16.3-b01, mixed
mode)
Tomcat: 6.0.26
I'm having trouble with a custom tag and I've tried to reduce the
problem to its most basic form:
/WEB-INF/tags/example.tag:
%@tag %
%@attribute name=xName required=true rtexprvalue=true %
h1xName=${xName}/h1
/jsp/Example.jsp:
!DOCTYPE HTML PUBLIC -//W3C//DTD HTML 4.01//EN
http://www.w3.org/TR/html4/strict.dtd;
%@page language=java contentType=text/html; charset=UTF-8
pageEncoding=UTF-8 %
%@taglib prefix=ex tagdir=/WEB-INF/tags %
html
body
ex:example xName=Testing Example /
/body
/html
I usually get:
You have run into a org.apache.jasper.JasperException:
/jsp/Example.jsp(6,4) Unable to find setter method for attribute: xName
error.
But sometimes I get this:
You have run into a java.lang.ClassNotFoundException:
org.apache.jsp.jsp.Example_jsp error.
Any idea what I'm doing wrong? From what I can see, my code seems to mirror
examples I've found in books and on the web. Intermittent results
suggest a race
condition to me though that seems odd here. I've not had good luck with
google on
this error.
Full stack traces for the exceptions here:
Feb 2, 2011 1:55:02 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet jsp threw exception
org.apache.jasper.JasperException: /jsp/Example.jsp(6,4) Unable to find
setter method for attribute: xName
at
org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:40)
at
org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:407)
at
org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:148)
at
org.apache.jasper.compiler.Generator$GenerateVisitor.evaluateAttribute(Generator.java:2809)
at
org.apache.jasper.compiler.Generator$GenerateVisitor.generateSetters(Generator.java:3032)
at
org.apache.jasper.compiler.Generator$GenerateVisitor.generateCustomDoTag(Generator.java:2452)
at
org.apache.jasper.compiler.Generator$GenerateVisitor.visit(Generator.java:1736)
at org.apache.jasper.compiler.Node$CustomTag.accept(Node.java:1530)
at org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2361)
at
org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2411)
at org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2417)
at org.apache.jasper.compiler.Node$Root.accept(Node.java:495)
at org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2361)
at
org.apache.jasper.compiler.Generator.generate(Generator.java:3440)
at
org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:231)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:347)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:327)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:314)
at
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:592)
at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317)
at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
at
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter
Re: Missing something with custom tags.
On 02/02/2011 22:25, Martin Gainty wrote: need to see the tld declaration for your tags There is none. It is implicit. You need to read the JSP spec. and the Java class declared for the tag It is a tag file - there is none. Again, you need to read the JSP spec. pls ping me offline Please don't. This is a community that discusses issues *on the mailing list* so everyone can benefit from reading the archives. Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
