• Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other Pie Elite all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Jeanne Boyarsky
  • Ron McLeod
  • Paul Clapham
  • Liutauras Vilda
Sheriffs:
  • paul wheaton
  • Rob Spoor
  • Devaka Cooray
Saloon Keepers:
  • Stephan van Hulst
  • Tim Holloway
  • Carey Brown
  • Frits Walraven
  • Tim Moores
Bartenders:
  • Mikalai Zaikin

I'm not sure the problem is the servlet

 
Greenhorn
Posts: 16
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
We have just installed Tomcat 5.5.26 and I am running test to make sure that everything is setup correctly. I get this message when I run a simple servlet that just places Hello on the screen. Can someone help me with this?

Thanks.
Tonya


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: Cannot allocate servlet instance for path /servlet/HelloServlet
org.apache.catalina.servlets.InvokerServlet.serveRequest(InvokerServlet.java:389)
org.apache.catalina.servlets.InvokerServlet.doGet(InvokerServlet.java:134)
javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)


root cause

java.lang.UnsupportedClassVersionError: Bad version number in .class file
java.lang.ClassLoader.defineClass1(Native Method)
java.lang.ClassLoader.defineClass(Unknown Source)
java.security.SecureClassLoader.defineClass(Unknown Source)
org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1853)
org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:875)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1330)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1209)
org.apache.catalina.servlets.InvokerServlet.serveRequest(InvokerServlet.java:370)
org.apache.catalina.servlets.InvokerServlet.doGet(InvokerServlet.java:134)
javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)


note The full stack trace of the root cause is available in the Apache Tomcat/5.5.26 logs.


--------------------------------------------------------------------------------

Apache
 
Sheriff
Posts: 13411
Firefox Browser VI Editor Redhat
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
It looks like you compiled your source with a javac version that is higher than the Java version under which you're running Tomcat.

Either upgrade your JVM or recompile your source with the -version xxx switch .
 
With a little knowledge, a cast iron skillet is non-stick and lasts a lifetime.
reply
    Bookmark Topic Watch Topic
  • New Topic