1 Reply Latest reply on Nov 9, 2008 7:18 PM by dsf sdf

    Portlet : SPRING + HIBERNATE + RICHFACES

    dsf sdf Newbie

      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