11:21 p.m.
Hi.
I tried out few seam examples, and all the ones i tried worked fine except the
"registration" example which is the one i really need to work so i can start
learning, since it is the simplest one.
I am using JDK 1.6.0 (b105) Tomcat 6.0.9, seam 1.1.6 GA.
can anyone tell me what i am missing?
Here is what i get when i visit the url of that example:
HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling
this request.
exception
javax.servlet.ServletException: java.lang.LinkageError: loader constraint violation: when
resolving interface method
"javax.servlet.jsp.JspApplicationContext.getExpressionFactory()Ljavax/el/ExpressionFactory;"
the class loader (instance of org/apache/jasper/servlet/JasperLoader) of the current
class, org/apache/jsp/register_jspx, 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/ExpressionFactory used in the signature
javax.faces.webapp.FacesServlet.service(FacesServlet.java:152)
root cause
javax.faces.FacesException: java.lang.LinkageError: loader constraint violation: when
resolving interface method
"javax.servlet.jsp.JspApplicationContext.getExpressionFactory()Ljavax/el/ExpressionFactory;"
the class loader (instance of org/apache/jasper/servlet/JasperLoader) of the current
class, org/apache/jsp/register_jspx, 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/ExpressionFactory used in the signature
org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:422)
org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:234)
org.jboss.seam.jsf.SeamViewHandler.renderView(SeamViewHandler.java:59)
org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:384)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:138)
root cause
javax.servlet.ServletException: java.lang.LinkageError: loader constraint violation: when
resolving interface method
"javax.servlet.jsp.JspApplicationContext.getExpressionFactory()Ljavax/el/ExpressionFactory;"
the class loader (instance of org/apache/jasper/servlet/JasperLoader) of the current
class, org/apache/jsp/register_jspx, 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/ExpressionFactory used in the signature
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:274)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:416)
org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:234)
org.jboss.seam.jsf.SeamViewHandler.renderView(SeamViewHandler.java:59)
org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:384)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:138)
root cause
java.lang.LinkageError: loader constraint violation: when resolving interface method
"javax.servlet.jsp.JspApplicationContext.getExpressionFactory()Ljavax/el/ExpressionFactory;"
the class loader (instance of org/apache/jasper/servlet/JasperLoader) of the current
class, org/apache/jsp/register_jspx, 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/ExpressionFactory used in the signature
org.apache.jsp.register_jspx._jspInit(register_jspx.java:35)
org.apache.jasper.runtime.HttpJspBase.init(HttpJspBase.java:80)
org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:157)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:320)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:416)
org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:234)
org.jboss.seam.jsf.SeamViewHandler.renderView(SeamViewHandler.java:59)
org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:384)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:138)
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.9 logs.
Apache Tomcat/6.0.9
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