Hi,
i'm trying to setup a portlet using those frameworks :
- spring 2.5.6
- hibernate-core 3.3.1
- richfaces 3.2.2
i have setup all the configuration files and deployed in jboss portal 2.6.7.
i'm now encoutering the following exception :
Caused by: java.lang.LinkageError: Class org/slf4j/ILoggerFactory violates
loader constraints
I don't really know what is causing that.
What i found is that
- my portlet is requiring slfj-api-1.4.2.jar
- another instance of slf4j is required by the deployed jboss-portal.sar. it is
slf4f-log4j12.jar
maybe there's a conflict ? i'm currently downloading jboss portal 2.7 hoping it
requires another version of slf4j.
thanks for helping me.
COMPLETE STACK TRACE :
Caused by: org.springframework.beans.BeanInstantiationException: Could not
instantiate bean class
[org.springframework.orm.hibernate3.LocalSessionFactoryBean]: Constructor threw
exception; nested exception is java.lang.LinkageError: Class
org/slf4j/ILoggerFactory violates loader constraints
at
org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:115)
at
org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:61)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:877)
... 174 more
Caused by: java.lang.LinkageError: Class org/slf4j/ILoggerFactory violates
loader constraints
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at
org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1814)
at
org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:872)
at
org.jboss.web.tomcat.service.WebAppClassLoader.findClass(WebAppClassLoader.java:75)
at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1325)
at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1204)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:103)
at org.hibernate.cfg.Configuration.(Configuration.java:151)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at
org.springframework.orm.hibernate3.LocalSessionFactoryBean.class$(LocalSessionFactoryBean.java:174)
at
org.springframework.orm.hibernate3.LocalSessionFactoryBean.(LocalSessionFactoryBean.java:174)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown
Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at
org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:100)
... 176 more
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