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Posted to users@tomcat.apache.org by Neill Lima <ne...@visual-meta.com> on 2015/03/20 09:58:52 UTC
Tomcat8 gives me WSOD due to LinkageError
Hello list,
I'm not sure if this the right place to ask, but here it goes...
I have a existing WebApp that I'm planning to upgrade to Tomcat8 (version
8.0.20 as of today). It is running stable in Tomcat7 already for ages.
Tomcat8 does not embed the JasperListener so I added it manually to my
pom.xml otherwise I was getting NoClassDefFoundError.
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-jasper</artifactId>
<version>8.0.20</version>
</dependency>
The application bootstraps properly but when I launch a request to it, I'm
getting the following exception;
Caused by: java.lang.LinkageError: loader constraint violation: when
resolving method
"org.apache.jasper.runtime.InstanceManagerFactory.getInstanceManager(Ljavax/servlet/ServletConfig;)Lorg/apache/tomcat/InstanceManager;"
the class loader (instance of org/apache/catalina/loader/WebappClassLoader)
of the current class, jsp/WEB_002dINF/jsp/home_005fpage_jsp, and the class
loader (instance of java/net/URLClassLoader) for the method's defining
class, org/apache/jasper/runtime/InstanceManagerFactory, have different
Class objects for the type org/apache/tomcat/InstanceManager used in the
signature at
jsp.WEB_002dINF.jsp.home_005fpage_jsp._jspInit(home_005fpage_jsp.java:128)
at org.apache.jasper.runtime.HttpJspBase.init(HttpJspBase.java:49) at
org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1231)
Has anyone experienced/resolved this before?
Re: Tomcat8 gives me WSOD due to LinkageError
Posted by Neill Lima <ne...@visual-meta.com>.
Hello Christopher,
Thanks for the reply. Actually not, I am working with out-of-the-box
Tomcat7 and Tomcat8 in this case. I wonder if any classloader changes
occurred in the last builds that could have affected this.
Thanks,
Neill
On Wed, Mar 25, 2015 at 5:44 PM, Christopher Schultz <
chris@christopherschultz.net> wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA256
>
> Neill,
>
> On 3/20/15 12:28 PM, Neill Lima wrote:
> > As of today I figured out that the jasper.jar in Tomcat's \lib
> > takes care of the task out of the box. I've tweaked my pom a few
> > times, but I started fresh today and realized it. So no pom updates
> > were necessary. Still I'm getting this exception I mentioned in the
> > earlier e-mail:
> >
> > Caused by: java.lang.LinkageError: loader constraint violation:
> > when resolving method
> >
> "org.apache.jasper.runtime.InstanceManagerFactory.getInstanceManager(Ljavax/servlet/ServletConfig;)Lorg/apache/tomcat/InstanceManager;"
> >
> >
> the class loader (instance of org/apache/catalina/loader/WebappClassLoader)
> > of the current class, jsp/WEB_002dINF/jsp/home_005fpage_jsp, and
> > the class loader (instance of java/net/URLClassLoader) for the
> > method's defining class,
> > org/apache/jasper/runtime/InstanceManagerFactory, have different
> > Class objects for the type org/apache/tomcat/InstanceManager used
> > in the signature at
> >
> jsp.WEB_002dINF.jsp.home_005fpage_jsp._jspInit(home_005fpage_jsp.java:128)
> >
> >
> at org.apache.jasper.runtime.HttpJspBase.init(HttpJspBase.java:49) at
> >
> org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1231)
> >
> > It does not happen on my current Tomcat7 deploy though.
>
> Do you have any other Tomcat-provided libraries in your web
> applications' WEB-INF/lib directory?
>
> That can cause all kinds of problems.
>
> - -chris
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> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
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>
>
Re: Tomcat8 gives me WSOD due to LinkageError
Posted by Christopher Schultz <ch...@christopherschultz.net>.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
Neill,
On 3/20/15 12:28 PM, Neill Lima wrote:
> As of today I figured out that the jasper.jar in Tomcat's \lib
> takes care of the task out of the box. I've tweaked my pom a few
> times, but I started fresh today and realized it. So no pom updates
> were necessary. Still I'm getting this exception I mentioned in the
> earlier e-mail:
>
> Caused by: java.lang.LinkageError: loader constraint violation:
> when resolving method
> "org.apache.jasper.runtime.InstanceManagerFactory.getInstanceManager(Ljavax/servlet/ServletConfig;)Lorg/apache/tomcat/InstanceManager;"
>
>
the class loader (instance of org/apache/catalina/loader/WebappClassLoader)
> of the current class, jsp/WEB_002dINF/jsp/home_005fpage_jsp, and
> the class loader (instance of java/net/URLClassLoader) for the
> method's defining class,
> org/apache/jasper/runtime/InstanceManagerFactory, have different
> Class objects for the type org/apache/tomcat/InstanceManager used
> in the signature at
> jsp.WEB_002dINF.jsp.home_005fpage_jsp._jspInit(home_005fpage_jsp.java:128)
>
>
at org.apache.jasper.runtime.HttpJspBase.init(HttpJspBase.java:49) at
> org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1231)
>
> It does not happen on my current Tomcat7 deploy though.
Do you have any other Tomcat-provided libraries in your web
applications' WEB-INF/lib directory?
That can cause all kinds of problems.
- -chris
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Re: Tomcat8 gives me WSOD due to LinkageError
Posted by Neill Lima <ne...@visual-meta.com>.
Hello Chris,
As of today I figured out that the jasper.jar in Tomcat's \lib takes care
of the task out of the box. I've tweaked my pom a few times, but I started
fresh today and realized it. So no pom updates were necessary. Still I'm
getting this exception I mentioned in the earlier e-mail:
Caused by: java.lang.LinkageError: loader constraint violation: when
resolving method
"org.apache.jasper.runtime.InstanceManagerFactory.getInstanceManager(Ljavax/servlet/ServletConfig;)Lorg/apache/tomcat/InstanceManager;"
the class loader (instance of org/apache/catalina/loader/WebappClassLoader)
of the current class, jsp/WEB_002dINF/jsp/home_005fpage_jsp, and the class
loader (instance of java/net/URLClassLoader) for the method's defining
class, org/apache/jasper/runtime/InstanceManagerFactory, have different
Class objects for the type org/apache/tomcat/InstanceManager used in the
signature at
jsp.WEB_002dINF.jsp.home_005fpage_jsp._jspInit(home_005fpage_jsp.java:128)
at org.apache.jasper.runtime.HttpJspBase.init(HttpJspBase.java:49) at
org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1231)
It does not happen on my current Tomcat7 deploy though.
On Fri, Mar 20, 2015 at 5:08 PM, Christopher Schultz <
chris@christopherschultz.net> wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA256
>
> Neill,
>
> On 3/20/15 4:58 AM, Neill Lima wrote:
> > I have a existing WebApp that I'm planning to upgrade to Tomcat8
> > (version 8.0.20 as of today). It is running stable in Tomcat7
> > already for ages.
>
> Great.
>
> > Tomcat8 does not embed the JasperListener so I added it manually to
> > my pom.xml otherwise I was getting NoClassDefFoundError.
>
> Wait, what? What do you mean "Tomcat8 does not embed the
> JasperListener"? What are you actually trying to do? Just run a JSP?
> It should work out of the box without any Maven foolishness.
>
> - -chris
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> -----END PGP SIGNATURE-----
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> For additional commands, e-mail: users-help@tomcat.apache.org
>
>
Re: Tomcat8 gives me WSOD due to LinkageError
Posted by Christopher Schultz <ch...@christopherschultz.net>.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
Neill,
On 3/20/15 4:58 AM, Neill Lima wrote:
> I have a existing WebApp that I'm planning to upgrade to Tomcat8
> (version 8.0.20 as of today). It is running stable in Tomcat7
> already for ages.
Great.
> Tomcat8 does not embed the JasperListener so I added it manually to
> my pom.xml otherwise I was getting NoClassDefFoundError.
Wait, what? What do you mean "Tomcat8 does not embed the
JasperListener"? What are you actually trying to do? Just run a JSP?
It should work out of the box without any Maven foolishness.
- -chris
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