tomcat-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Danno Ferrin <shem...@earthlink.net>
Subject Re: Unable to make my own tag with 3.1M1 !!!!!
Date Wed, 01 Mar 2000 15:39:08 GMT
Read the java beans spec:

 getMyAttr and setMyAttr when made to a property the first character is
dropped in case (unless the second character is uppercase) so the attr
is myAttr not MyAttr.  

Richa Oberoi wrote:
> 
> hi!!!
> 
> i am trying to make my own tag quiet similar to the given taglib example
> so i started by making MyTag.java file very similar to FooTag.java extending same ExampletagBase
and implementing BodyTag
> now this tag has 4 attributes or scripting variables whose values i provide in my.jsp
(similar to foo.jsp)
> also made MyTagExtraInfo.java similar to FooTagExtraInfo.java
> all these java files r in the same directory as for foo
> 
> now my.jsp looks something like this
> 
> <html>
> 
> <body>
> 
> <%@ taglib uri="http://java.apache.org/tomcat/examples-taglib" prefix="eg" %>
> 
> <ul>
> 
> <eg:My MyAttr="Richa" NameAttr="Name" IsAttr="Is" RichaAttr="Richa">
> 
> <li><%= AttributeName %></li>
> 
> </eg:My>
> 
> </ul>
> 
> </body>
> 
> </html>
> 
> i have also made an entry of this tag in the TLD like this (again quiet similar to foo)
> 
> <!-- A simple Tag -->
> 
> <!-- My tag -->
> 
> <tag>
> 
> <name>My</name>
> 
> <tagclass>examples.MyTag</tagclass>
> 
> <teiclass>examples.MyTagExtraInfo</teiclass>
> 
> <bodycontent>JSP</bodycontent>
> 
> <info>
> 
> Perform a server side action; uses 3 mandatory attributes
> 
> </info>
> 
> <attribute>
> 
> <name>MyAttr</name>
> 
> <required>true</required>
> 
> </attribute>
> 
> <attribute>
> 
> <name>NameAttr</name>
> 
> <required>true</required>
> 
> </attribute>
> 
> <attribute>
> 
> <name>IsAttr</name>
> 
> <required>true</required>
> 
> </attribute>
> 
> <attribute>
> 
> <name>RichaAttr</name>
> 
> <required>true</required>
> 
> </attribute>
> 
> </tag>
> 
> now the problem is     the java files MyTag.java and MyTagExtraInfo.java compile fine
but when i compile the My.jsp in explorer it gives the following error
> 
> Error: 500
> Internal Servlet Error:
> 
> org.apache.jasper.JasperException: Unable to find setter method for attribute: MyAttr
>         at org.apache.jasper.compiler.TagBeginGenerator.generateSetters(Compiled Code)
>         at org.apache.jasper.compiler.TagBeginGenerator.generateServiceMethodStatements(TagBeginGenerator.java:206)
>         at org.apache.jasper.compiler.TagBeginGenerator.generate(TagBeginGenerator.java:275)
>         at org.apache.jasper.compiler.JspParseEventListener$GeneratorWrapper.generate(Compiled
Code)
>         at org.apache.jasper.compiler.JspParseEventListener.generateAll(Compiled Code)
>         at org.apache.jasper.compiler.JspParseEventListener.endPageProcessing(JspParseEventListener.java:159)
>         at org.apache.jasper.compiler.Compiler.compile(Compiled Code)
>         at org.apache.jasper.runtime.JspLoader.loadJSP(JspLoader.java:226)
>         at org.apache.jasper.runtime.JspServlet$JspServletWrapper.loadIfNecessary(JspServlet.java:137)
>         at org.apache.jasper.runtime.JspServlet$JspServletWrapper.service(JspServlet.java:148)
>         at org.apache.jasper.runtime.JspServlet.serviceJspFile(JspServlet.java:255)
>         at org.apache.jasper.runtime.JspServlet.service(Compiled Code)
>         at javax.servlet.http.HttpServlet.service(HttpServlet.java:865)
>         at org.apache.tomcat.core.ServletWrapper.handleInvocation(Compiled Code)
>         at org.apache.tomcat.core.ServletWrapper.handleRequest(ServletWrapper.java:224)
>         at org.apache.tomcat.core.ContextManager.service(ContextManager.java:347)
>         at org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpConnectionHandler.java:144)
>         at org.apache.tomcat.service.TcpConnectionThread.run(TcpEndpoint.java:305)
>         at java.lang.Thread.run(Thread.java:466)
> 
> another thing i would like to mention is i tried modifying FooTag.java first by removing
1 attribute and then by adding another(that is making them 4)
> and correspondingly making changes in the jsp and the TLD it works fine  !!!!!
> 
> i am working on Windows NT and using VCafe 3.0 JVM
> 
> so Please help !!!!!!

Mime
View raw message