(solution) RE: problem with Struts 2 setup -class file has wrong version 49.0, should be 48.0

[Jack Yu <jy...@iis-consulting.com>]

The soltuoi

-----Original Message-----
From: Jack Yu [mailto:jyu@iis-consulting.com] 
Sent: Tuesday, May 08, 2007 9:46 AM
To: 'Struts Users Mailing List'
Cc: 'Jae Lim'
Subject: RE: problem with Struts 2 setup -class file has wrong version 49.0,
should be 48.0

Ok, I have did all the steps below, and still can't fix this version problem
with Java. 

  1) Delete the "Catalina" folder under tomcat5/work/
  2) Restart tomcat
  3) Make sure javac and java are both 1.6 from the command line, and in the
tomcat configuration, the jvm path is: 
     C:\Program Files\Java\jdk1.6.0_01\jre\bin\server\jvm.dll
  4) Go to http://localhost:8080/struts2-blank-2.0.6/
     And get this error: 

============================================================================
javax.servlet.ServletException: Unable to compile class for JSP

Generated servlet error:
C:\Tomcat5\work\Catalina\localhost\struts2-blank-2.0.6\org\apache\jsp\exampl
e\HelloWorld_jsp.java:7: cannot access java.lang.Object


Generated servlet error:
bad class file: C:\Program
Files\Java\jdk1.6.0_01\jre\lib\rt.jar(java/lang/Object.class)
class file has wrong version 49.0, should be 48.0
============================================================================

Version 48.0 is Java 1.4,  version 49.0 is Java 1.5, but I only have version
Java 1.6(Version 50.0) on my computer right now. 

Another question I have raised is that I downloaded and installed Java SDK,
do I need to download Java EE separately? 

Thanks. 







-----Original Message-----
From: Martin Gainty [mailto:mgainty@hotmail.com] 
Sent: Monday, May 07, 2007 5:50 PM
To: jyu@iis-consulting.com
Cc: Struts Users Mailing List
Subject: Re: problem with Struts 2 setup -The requested resource
(/struts2-blank-2.0.6/) is not available

what happens when you clean the work dir (as earlier suggested) and 
recompile the webapp under 6???
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----- Original Message ----- 
From: "Dave Newton" <ne...@yahoo.com>
To: "Struts Users Mailing List" <us...@struts.apache.org>
Sent: Monday, May 07, 2007 5:31 PM
Subject: RE: problem with Struts 2 setup -The requested resource 
(/struts2-blank-2.0.6/) is not available


> --- Jack Yu <jy...@iis-consulting.com> wrote:
>> Yeah, I have tried this, but it still give me the
>> same problem. Thanks.
>
> ?! I hate to ask, but are you sure? If the compilation
> is happening with one version and the execution with
> another something seems horribly wrong.
>
> You say you're using 1.6, but the trace below is using
> 1.5.
>
> d.
>
>> Clean out your work directory so the JSPs are
>> re-compiled.
>>
>> --- Jack Yu <jy...@iis-consulting.com> wrote:
>>
>> > Ok, I can start my webapps now, by using JVM 1.6.
>> > (The mistakes was that I
>> > configured tomcat to point to the jre1.4
>> directory.
>> > )
>> >
>> > However, I encounter a new problem, when I go to
>> > http://localhost:8080/struts2-blank-2.0.6/, I get
>> > the following error.
>> >
>> > I read compile each java src files and restart
>> > tomcat again, still give me
>> > the same problem.
>> >
>>
> ==============================================================
>> > javax.servlet.ServletException: Unable to compile
>> > class for JSP
>> >
>> > Generated servlet error:
>> >
>>
>
C:\Tomcat5\work\Catalina\localhost\struts2-blank-2.0.6\org\apache\jsp\exampl
>> > e\HelloWorld_jsp.java:7: cannot access
>> > java.lang.Object
>> >
>> >
>> > Generated servlet error:
>> > bad class file:
>> >
>>
> C:\jdk1.5.0_11\jre\lib\rt.jar(java/lang/Object.class)
>> > class file has wrong version 49.0, should be 48.0
>> > Please remove or make sure it appears in the
>> correct
>> > subdirectory of the
>> > classpath.
>> > public final class HelloWorld_jsp extends
>> > org.apache.jasper.runtime.HttpJspBase
>> >              ^
>> > 1 error....
>> >
>>
> ===================================================================
>> >
>> > -----Original Message-----
>> > From: Musachy Barroso [mailto:musachy@gmail.com]
>> > Sent: Monday, May 07, 2007 3:03 PM
>> > To: Struts Users Mailing List
>> > Subject: Re: problem with Struts 2 setup -The
>> > requested resource
>> > (/struts2-blank-2.0.6/) is not available
>> >
>> > That problem is definitely a jvm version issue.
>> Run:
>> >
>> > java -showversion
>> >
>> > to see what version you have in the path and make
>> > sure it is 1.5 (1.6 should
>> > be fine also)
>> >
>> > musachy
>> >
>> > On 5/7/07, Jack Yu <jy...@iis-consulting.com> wrote:
>> > >
>> > > Ok,
>> > >
>> > > I'm using JDK 1.6 and JVM 1.6 now, and I still
>> > have the same problem.
>> > >
>> > > I also tried to use JDK 1.5, but still have the
>> > same problem.
>> > >
>> > >
>> >
>>
> ===================================================================
>> > > 007-05-07 14:55:21
>> > StandardContext[/manager]HTMLManager: start:
>> > Starting
>> > > web
>> > > application at '/struts2-blank-2.0.6'
>> > > 2007-05-07 14:55:21
>> > StandardContext[/struts2-blank-2.0.6]Exception
>> > > starting
>> > > filter struts2
>> > > java.lang.UnsupportedClassVersionError:
>> > > org/apache/struts2/dispatcher/FilterDispatcher
>> > (Unsupported major.minor
>> > > version 49.0)
>> > >         at
>> > java.lang.ClassLoader.defineClass0(Native Method)
>> > >
>> > >
>> >
>>
>
============================================================================
>> > > ===
>> > >
>> > >
>> > >
>> > > -----Original Message-----
>> > > From: Patrick J Kobly [mailto:patrick@kobly.com]
>> > > Sent: Monday, May 07, 2007 1:09 PM
>> > > To: Struts Users Mailing List
>> > > Subject: Re: problem with Struts 2 setup -The
>> > requested resource
>> > > (/struts2-blank-2.0.6/) is not available
>> > >
>> > > Download a more recent JVM for Tomcat to use.
>> > Looks like struts needs
>> > > 1.5+...
>> > >
>> > > PK
>> > > Jack Yu wrote:
>> > > > Ok, I found the error from the log
>> > > >
>> >
>>
> ==========================================================
>> > > > 2007-05-07 12:51:55
>> > StandardContext[/manager]HTMLManager: start:
>> > > Starting
>> > > > web application at '/struts2-blank-2.0.6'
>> > > > 2007-05-07 12:51:56
>> > StandardContext[/struts2-blank-2.0.6]Exception
>> > > starting
>> > > > filter struts2
>> > > > java.lang.UnsupportedClassVersionError:
>> > > > org/apache/struts2/dispatcher/FilterDispatcher
>> > (Unsupported major.minor
>> > > > version 49.0)
>> > > >
>> > >
>> > >
>> > >
>> >
>>
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>> > >
>> >
>>
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>> > >
>> >
>> >
>> > -- 
>> > "Hey you! Would you help me to carry the stone?"
>> > Pink Floyd
>> >
>> >
>> >
>>
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