Hi, i'm tring to use weld the implementation of the JSR 299 (*Java Contexts
and Dependency Injection* ) on tomcat and it's working pretty well. The only
problem so fat is when i try to override the built-in el-api/el-impl from
Tomcat lib directory, with the new EL 2.2 that support parameters.
I put the libs on my WEB-INF/lib but it seems that somewhat the tomcat libs
are still being used cause i got this error:
SEVERE: Exception sending context initialized event to listener instance of
class org.jboss.weld.environment.servlet.Listener
java.lang.LinkageError: loader constraint violation: when resolving
interface method
"javax.servlet.jsp.JspApplicationContext.addELResolver(Ljavax/el/ELResolver;)V"
the class loader (instance of org/apache/catalina/loader/WebappClassLoader)
of the current class, org/jboss/weld/environment/servlet/Listener, and the
class loader (instance of org/apache/catalina/loader/StandardClassLoader)
for resolved class, javax/servlet/jsp/JspApplicationContext, have different
Class objects for the type javax/el/ELResolver used in the signature
at
org.jboss.weld.environment.servlet.Listener.contextInitialized(Listener.java:160)
at
org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3972)
Messy error, but to me it shows that the application is somewhat trying to
use at the same time diferent implementations of the EL.
Basically i was trying to use the Cay Horstmann tutorial at:
http://weblogs.java.net/blog/cayhorstmann/archive/2009/12/29/jsf-20-and-tomcat
Did anyone try that? I heard something about changing the libs of
tomcat-home/lib, but that's not a good thing to do on production time if
other applications do use the older lib.
--
Is tomcat 6 going to support the new EL? What should be the write way to
override it on my app?
Thanks in advance,
Israel
