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Posted to user@velocity.apache.org by Lucas Balensiefer <lu...@cwi.com.br> on 2008/09/25 19:58:13 UTC
Trying to run velocity with JBoss
Hi folks,
I'm trying to run Velocity 1.5 with a web application inside JBoss. I use
Velocity to generate some files, I'm not using to view them.
My code is running fine standalone, but when I'm deploying this in JBoss and
invoke my class by the application, the exception is thrown:
14:17:37,896 ERROR [STDERR] java.lang.LinkageError: loader constraint
violation: loader (instance of
org/jboss/web/tomcat/service/WebAppClassLoader) previously initiated loading
for a different type with name "org/apache/commons/collections/OrderedMap"
14:17:37,912 ERROR [STDERR] at java.lang.ClassLoader.defineClass1(Native
Method)
14:17:37,912 ERROR [STDERR] at java.lang.ClassLoader.defineClass(Unknown
Source)
14:17:37,912 ERROR [STDERR] at
java.security.SecureClassLoader.defineClass(Unknown Source)
14:17:37,912 ERROR [STDERR] at
org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLo
ader.java:1817)
14:17:37,912 ERROR [STDERR] at
org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.jav
a:872)
14:17:37,912 ERROR [STDERR] at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.jav
a:1325)
14:17:37,912 ERROR [STDERR] at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.jav
a:1204)
14:17:37,912 ERROR [STDERR] at
java.lang.ClassLoader.loadClassInternal(Unknown Source)
14:17:37,912 ERROR [STDERR] at java.lang.ClassLoader.defineClass1(Native
Method)
14:17:37,912 ERROR [STDERR] at java.lang.ClassLoader.defineClass(Unknown
Source)
14:17:37,912 ERROR [STDERR] at
java.security.SecureClassLoader.defineClass(Unknown Source)
14:17:37,912 ERROR [STDERR] at
org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLo
ader.java:1817)
14:17:37,912 ERROR [STDERR] at
org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.jav
a:872)
14:17:37,912 ERROR [STDERR] at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.jav
a:1325)
14:17:37,912 ERROR [STDERR] at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.jav
a:1204)
14:17:37,912 ERROR [STDERR] at
java.lang.ClassLoader.loadClassInternal(Unknown Source)
14:17:37,912 ERROR [STDERR] at java.lang.ClassLoader.defineClass1(Native
Method)
14:17:37,912 ERROR [STDERR] at java.lang.ClassLoader.defineClass(Unknown
Source)
14:17:37,912 ERROR [STDERR] at
java.security.SecureClassLoader.defineClass(Unknown Source)
14:17:37,912 ERROR [STDERR] at
org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLo
ader.java:1817)
14:17:37,912 ERROR [STDERR] at
org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.jav
a:872)
14:17:37,912 ERROR [STDERR] at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.jav
a:1325)
14:17:37,912 ERROR [STDERR] at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.jav
a:1204)
14:17:37,912 ERROR [STDERR] at
java.lang.ClassLoader.loadClassInternal(Unknown Source)
14:17:37,927 ERROR [STDERR] at
org.apache.velocity.runtime.resource.ResourceCacheImpl.initialize(ResourceCa
cheImpl.java:71)
14:17:37,927 ERROR [STDERR] at
org.apache.velocity.runtime.resource.ResourceManagerImpl.initialize(Resource
ManagerImpl.java:198)
14:17:37,927 ERROR [STDERR] at
org.apache.velocity.runtime.RuntimeInstance.initializeResourceManager(Runtim
eInstance.java:594)
14:17:37,927 ERROR [STDERR] at
org.apache.velocity.runtime.RuntimeInstance.init(RuntimeInstance.java:241)
14:17:37,927 ERROR [STDERR] at
org.apache.velocity.runtime.RuntimeInstance.init(RuntimeInstance.java:534)
14:17:37,927 ERROR [STDERR] at
org.apache.velocity.runtime.RuntimeSingleton.init(RuntimeSingleton.java:227)
14:17:37,927 ERROR [STDERR] at
org.apache.velocity.app.Velocity.init(Velocity.java:111)
14:17:37,927 ERROR [STDERR] at
br.com.cwi.reporttool.report.build.velocity.VelocityHandler.<init>(VelocityH
andler.java:41)
I already tried others alternatives (loading by WebappLoader or
ClasspathLoader), but I can't to load the file too. I prefer to use the
FileResourceLoader, but If exists a solution using other Loader, that's ok.
My code is:
public class VelocityHandler {
private VelocityContext context = null;
private Template template = null;
private static Logger logger = Logger.getLogger(VelocityHandler.class);
public VelocityHandler(final String templateFile, final String
templatesDir) throws BuildException {
try {
Properties p = new Properties();
//p.setProperty("resource.loader", "webapp");
//p.setProperty("webapp.resource.loader.class",
"org.apache.velocity.tools.view.servlet.WebappLoader");
p.setProperty("resource.loader","file");
p.setProperty("file.resource.loader.class","org.apache.velocity.runtime.reso
urce.loader.FileResourceLoader");
p.setProperty("file.resource.loader.path", templatesDir);
//p.setProperty( "resource.loader", "class" );
//p.setProperty( "class.resource.loader.class",
"org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader");
try {
Velocity.init(p);
} catch (Throwable e) {
e.printStackTrace();
}
...
Thanks,
Lucas Balensiefer
Re: Trying to run velocity with JBoss
Posted by Adrian Tarau <ad...@intellisoftsystems.com>.
Lucas,
This is not related with resource loading, there is a class version
conflict in the classloader.
Do you use velocity-dep-1.5.jar and you have Jakarta Commons Collections
in your application?
Lucas Balensiefer wrote:
> Hi folks,
>
>
>
> I'm trying to run Velocity 1.5 with a web application inside JBoss. I use
> Velocity to generate some files, I'm not using to view them.
>
>
>
> My code is running fine standalone, but when I'm deploying this in JBoss and
> invoke my class by the application, the exception is thrown:
>
>
>
> 14:17:37,896 ERROR [STDERR] java.lang.LinkageError: loader constraint
> violation: loader (instance of
> org/jboss/web/tomcat/service/WebAppClassLoader) previously initiated loading
> for a different type with name "org/apache/commons/collections/OrderedMap"
>
> 14:17:37,912 ERROR [STDERR] at java.lang.ClassLoader.defineClass1(Native
> Method)
>
> 14:17:37,912 ERROR [STDERR] at java.lang.ClassLoader.defineClass(Unknown
> Source)
>
> 14:17:37,912 ERROR [STDERR] at
> java.security.SecureClassLoader.defineClass(Unknown Source)
>
> 14:17:37,912 ERROR [STDERR] at
> org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLo
> ader.java:1817)
>
> 14:17:37,912 ERROR [STDERR] at
> org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.jav
> a:872)
>
> 14:17:37,912 ERROR [STDERR] at
> org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.jav
> a:1325)
>
> 14:17:37,912 ERROR [STDERR] at
> org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.jav
> a:1204)
>
> 14:17:37,912 ERROR [STDERR] at
> java.lang.ClassLoader.loadClassInternal(Unknown Source)
>
> 14:17:37,912 ERROR [STDERR] at java.lang.ClassLoader.defineClass1(Native
> Method)
>
> 14:17:37,912 ERROR [STDERR] at java.lang.ClassLoader.defineClass(Unknown
> Source)
>
> 14:17:37,912 ERROR [STDERR] at
> java.security.SecureClassLoader.defineClass(Unknown Source)
>
> 14:17:37,912 ERROR [STDERR] at
> org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLo
> ader.java:1817)
>
> 14:17:37,912 ERROR [STDERR] at
> org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.jav
> a:872)
>
> 14:17:37,912 ERROR [STDERR] at
> org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.jav
> a:1325)
>
> 14:17:37,912 ERROR [STDERR] at
> org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.jav
> a:1204)
>
> 14:17:37,912 ERROR [STDERR] at
> java.lang.ClassLoader.loadClassInternal(Unknown Source)
>
> 14:17:37,912 ERROR [STDERR] at java.lang.ClassLoader.defineClass1(Native
> Method)
>
> 14:17:37,912 ERROR [STDERR] at java.lang.ClassLoader.defineClass(Unknown
> Source)
>
> 14:17:37,912 ERROR [STDERR] at
> java.security.SecureClassLoader.defineClass(Unknown Source)
>
> 14:17:37,912 ERROR [STDERR] at
> org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLo
> ader.java:1817)
>
> 14:17:37,912 ERROR [STDERR] at
> org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.jav
> a:872)
>
> 14:17:37,912 ERROR [STDERR] at
> org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.jav
> a:1325)
>
> 14:17:37,912 ERROR [STDERR] at
> org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.jav
> a:1204)
>
> 14:17:37,912 ERROR [STDERR] at
> java.lang.ClassLoader.loadClassInternal(Unknown Source)
>
> 14:17:37,927 ERROR [STDERR] at
> org.apache.velocity.runtime.resource.ResourceCacheImpl.initialize(ResourceCa
> cheImpl.java:71)
>
> 14:17:37,927 ERROR [STDERR] at
> org.apache.velocity.runtime.resource.ResourceManagerImpl.initialize(Resource
> ManagerImpl.java:198)
>
> 14:17:37,927 ERROR [STDERR] at
> org.apache.velocity.runtime.RuntimeInstance.initializeResourceManager(Runtim
> eInstance.java:594)
>
> 14:17:37,927 ERROR [STDERR] at
> org.apache.velocity.runtime.RuntimeInstance.init(RuntimeInstance.java:241)
>
> 14:17:37,927 ERROR [STDERR] at
> org.apache.velocity.runtime.RuntimeInstance.init(RuntimeInstance.java:534)
>
> 14:17:37,927 ERROR [STDERR] at
> org.apache.velocity.runtime.RuntimeSingleton.init(RuntimeSingleton.java:227)
>
> 14:17:37,927 ERROR [STDERR] at
> org.apache.velocity.app.Velocity.init(Velocity.java:111)
>
> 14:17:37,927 ERROR [STDERR] at
> br.com.cwi.reporttool.report.build.velocity.VelocityHandler.<init>(VelocityH
> andler.java:41)
>
>
>
>
>
> I already tried others alternatives (loading by WebappLoader or
> ClasspathLoader), but I can't to load the file too. I prefer to use the
> FileResourceLoader, but If exists a solution using other Loader, that's ok.
>
> My code is:
>
>
>
> public class VelocityHandler {
>
>
>
> private VelocityContext context = null;
>
> private Template template = null;
>
>
>
> private static Logger logger = Logger.getLogger(VelocityHandler.class);
>
>
>
> public VelocityHandler(final String templateFile, final String
> templatesDir) throws BuildException {
>
>
>
> try {
>
> Properties p = new Properties();
>
>
>
> //p.setProperty("resource.loader", "webapp");
>
> //p.setProperty("webapp.resource.loader.class",
> "org.apache.velocity.tools.view.servlet.WebappLoader");
>
>
>
> p.setProperty("resource.loader","file");
>
>
> p.setProperty("file.resource.loader.class","org.apache.velocity.runtime.reso
> urce.loader.FileResourceLoader");
>
> p.setProperty("file.resource.loader.path", templatesDir);
>
>
>
> //p.setProperty( "resource.loader", "class" );
>
> //p.setProperty( "class.resource.loader.class",
> "org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader");
>
>
>
> try {
>
> Velocity.init(p);
>
> } catch (Throwable e) {
>
> e.printStackTrace();
>
> }
>
>
>
> ...
>
>
>
>
>
>
>
> Thanks,
>
> Lucas Balensiefer
>
>
>
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