Standalone Spring app ( jar) conflicting with other web apps on weblogic 10

4
votes

I have a standalone spring app that contains mainly aspecj aspects and few other spring managed beans and bundled in a jar with maven-assembly plugin with all the spring dependencies bundled inside the jar and added to weblogic classpath.

the goal is to have he aspects inside the library woven into all the running applications inside weblogic in run time using aspectJ agent.

The problem is that when I add my jar file in the classpath and restart the server I get ClassNotFoundException when the existing web app is deployed.

I know it is not a jar file not in the lib folder, since the app deploys fine without my jar file in classpath.

Note: I also get classNotFoundException when I just drop the spring jar files in the domain/lib folder.

Can you shade some light on why the running applications are impacted by my spring based library?

Please see stacktrace below: i m pretty sure javax.validation.ValidatorFactory is in the validation-api inside the WEB-INF\lib folder. as i only get this exception when I add my custom jar file to weblogic classpath.

Caused By: org.springframework.beans.factory.CannotLoadBeanClassException: Error loading class [org.springframework.validation.beanvalidation.LocalValidatorFactoryBean] for bean with name 'jsr303Validator' defined in ServletContext resource [/WEB-INF/config/webmvc-config.xml]: problem with class file or dependent class; nested exception is java.lang.NoClassDefFoundError: javax/validation/ValidatorFactory
at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1272)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:578)
at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1338)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doGetBeanNamesForType(DefaultListableBeanFactory.java:356)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:335)
at org.springframework.beans.factory.BeanFactoryUtils.beanNamesForTypeIncludingAncestors(BeanFactoryUtils.java:187)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:895)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:853)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:768)
at org.s

Caused By: java.lang.ClassNotFoundException: javax.validation.ValidatorFactory
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
at java

Here is the dependency tree of my WAR file.

       [INFO] [dependency:tree {execution: default-cli}]
    [INFO] com.company.project:eCom4jWeb:war:1.0.0-SNAPSHOT
    [INFO] +- com.company.project:eCom4jCore:jar:1.0.0-SNAPSHOT:compile
    [INFO] |  +- org.springframework:spring-jdbc:jar:3.1.2.RELEASE:compile
    [INFO] |  +- org.hsqldb:com.springsource.org.hsqldb:jar:1.8.0.9:runtime
    [INFO] |  +- mysql:mysql-connector-java:jar:5.1.9:compile
    [INFO] |  +- org.hibernate:com.springsource.org.hibernate:jar:3.3.2.GA:compile
    [INFO] |  |  +- net.sourceforge.cglib:com.springsource.net.sf.cglib:jar:2.2.0:compile
[INFO] |  |  +- org.antlr:com.springsource.antlr:jar:2.7.6:compile
[INFO] |  |  +- org.apache.commons:com.springsource.org.apache.commons.collections:jar:3.2.1:compile
[INFO] |  |  +- org.dom4j:com.springsource.org.dom4j:jar:1.6.1:compile
[INFO] |  |  +- org.jboss.javassist:com.springsource.javassist:jar:3.9.0.GA:compile
[INFO] |  |  \- org.objectweb.asm:com.springsource.org.objectweb.asm:jar:1.5.3:compile
[INFO] |  +- org.hibernate:com.springsource.org.hibernate.annotations:jar:3.4.0.GA:compile
[INFO] |  |  \- org.hibernate:com.springsource.org.hibernate.annotations.common:jar:3.3.0.ga:compile
[INFO] |  +- org.hibernate:hibernate-validator:jar:4.2.0.Final:compile
[INFO] |  |  +- javax.validation:validation-api:jar:1.0.0.GA:compile
[INFO] |  |  \- org.slf4j:slf4j-api:jar:1.6.1:compile
[INFO] |  +- javax.transaction:com.springsource.javax.transaction:jar:1.1.0:compile
[INFO] |  +- commons-beanutils:commons-beanutils:jar:1.8.3:compile
[INFO] |  +- net.sf.dozer:dozer:jar:5.3.1:compile
[INFO] |  \- org.apache.xmlbeans:xmlbeans:jar:2.4.0:runtime
[INFO] |     \- stax:stax-api:jar:1.0.1:runtime
[INFO] +- com.company.project:eCom4jWS:jar:1.0.0-SNAPSHOT:compile
[INFO] |  +- com.company.project:eCom4jRemixDomain:jar:1.0.0-SNAPSHOT:compile
[INFO] |  |  \- org.jvnet.jaxb2_commons:jaxb2-basics-runtime:jar:0.6.2:compile
[INFO] |  \- org.springframework:spring-oxm:jar:3.1.2.RELEASE:compile
[INFO] +- javax.servlet:jstl:jar:1.2:compile
[INFO] +- org.springframework.security:spring-security-web:jar:3.1.2.RELEASE:compile
[INFO] |  \- aopalliance:aopalliance:jar:1.0:compile
[INFO] +- org.springframework.security:spring-security-taglibs:jar:3.1.2.RELEASE:compile
[INFO] |  \- org.springframework.security:spring-security-acl:jar:3.1.2.RELEASE:compile
[INFO] +- org.springframework:spring-webmvc:jar:3.1.2.RELEASE:compile
[INFO] |  +- org.springframework:spring-asm:jar:3.1.2.RELEASE:compile
[INFO] |  \- org.springframework:spring-context-support:jar:3.1.2.RELEASE:compile
[INFO] +- javax.servlet:servlet-api:jar:2.5:provided
[INFO] +- org.springframework:spring-beans:jar:3.1.2.RELEASE:compile
[INFO] +- org.springframework.webflow:spring-binding:jar:2.2.1.RELEASE:compile
[INFO] +- org.springframework.webflow:spring-js:jar:2.2.1.RELEASE:compile
[INFO] |  \- org.springframework.webflow:spring-js-resources:jar:2.2.1.RELEASE:compile
[INFO] +- org.springframework.webflow:spring-webflow:jar:2.2.1.RELEASE:compile
[INFO] +- org.springframework.security:spring-security-config:jar:3.1.2.RELEASE:compile
[INFO] +- org.springframework.security:spring-security-core:jar:3.1.2.RELEASE:compile
[INFO] +- org.springframework:spring-tx:jar:3.1.2.RELEASE:compile
[INFO] +- org.springframework:spring-web:jar:3.1.2.RELEASE:compile
[INFO] +- org.springframework:spring-aop:jar:3.1.2.RELEASE:compile
[INFO] +- commons-logging:commons-logging:jar:1.1.1:compile
[INFO] +- org.springframework:spring-core:jar:3.1.2.RELEASE:compile
[INFO] +- org.springframework:spring-orm:jar:3.1.2.RELEASE:compile
[INFO] +- org.springframework:spring-context:jar:3.1.2.RELEASE:compile
[INFO] +- javax.el:el-api:jar:1.0:provided
[INFO] +- org.jboss.el:com.springsource.org.jboss.el:jar:2.0.0.GA:compile
[INFO] +- org.apache.tiles:tiles-core:jar:2.1.4:compile
[INFO] |  +- commons-digester:commons-digester:jar:1.8.1:compile
[INFO] |  \- commons-logging:commons-logging-api:jar:1.1:compile
[INFO] +- org.apache.tiles:tiles-jsp:jar:2.1.4:compile
[INFO] +- org.apache.tiles:tiles-api:jar:2.1.4:compile
[INFO] +- org.apache.tiles:tiles-servlet:jar:2.1.4:compile
[INFO] +- org.springframework:spring-test:jar:3.1.2.RELEASE:test
[INFO] +- org.springframework:spring-expression:jar:3.1.2.RELEASE:compile
[INFO] +- org.springframework:spring-test-mvc:jar:1.0.0.BUILD-SNAPSHOT:test
[INFO] +- org.powermock:powermock-module-junit4:jar:1.4.12:test
[INFO] |  \- org.powermock:powermock-module-junit4-common:jar:1.4.12:test
[INFO] |     +- org.powermock:powermock-core:jar:1.4.12:test
[INFO] |     |  \- org.javassist:javassist:jar:3.16.1-GA:test
[INFO] |     \- org.powermock:powermock-reflect:jar:1.4.12:test
[INFO] +- org.powermock:powermock-api-easymock:jar:1.4.12:test
[INFO] |  \- org.powermock:powermock-api-support:jar:1.4.12:test
[INFO] +- org.codehaus.jackson:jackson-mapper-asl:jar:1.5.3:compile
[INFO] |  \- org.codehaus.jackson:jackson-core-asl:jar:1.5.3:compile
[INFO] +- com.jayway.jsonpath:json-path:jar:0.8.1:test
[INFO] |  \- net.minidev:json-smart:jar:1.1.1:test
[INFO] +- org.aspectj:com.springsource.org.aspectj.weaver:jar:1.6.8.RELEASE:compile
[INFO] +- org.slf4j:com.springsource.slf4j.api:jar:1.5.6:compile
[INFO] +- org.slf4j:com.springsource.slf4j.org.apache.commons.logging:jar:1.5.6:runtime
[INFO] +- org.slf4j:com.springsource.slf4j.log4j:jar:1.5.6:runtime
[INFO] +- org.apache.log4j:com.springsource.org.apache.log4j:jar:1.2.15:compile
[INFO] +- org.apache.commons:com.springsource.org.apache.commons.dbcp:jar:1.2.2.osgi:runtime
[INFO] +- org.apache.commons:com.springsource.org.apache.commons.pool:jar:1.5.3:runtime
[INFO] +- org.hamcrest:hamcrest-all:jar:1.3:compile
[INFO] +- junit:junit:jar:4.8.1:test (scope not updated to compile)
[INFO] +- org.easymock:easymock:jar:3.1:test
[INFO] |  +- cglib:cglib-nodep:jar:2.2.2:test
[INFO] |  \- org.objenesis:objenesis:jar:1.2:test
[INFO] +- commons-lang:commons-lang:jar:2.6:compile
[INFO] +- org.apache.struts:struts2-core:jar:2.2.1:compile
[INFO] |  +- org.apache.struts.xwork:xwork-core:jar:2.2.1:compile
[INFO] |  +- org.freemarker:freemarker:jar:2.3.16:compile
[INFO] |  +- ognl:ognl:jar:3.0:compile
[INFO] |  +- commons-fileupload:commons-fileupload:jar:1.2.1:compile
[INFO] |  +- commons-io:commons-io:jar:1.3.2:compile
[INFO] |  \- com.sun:tools:jar:1.5.0:system
[INFO] +- org.apache.struts:struts2-tiles-plugin:jar:2.2.1:compile
[INFO] +- org.apache.struts:struts2-spring-plugin:jar:2.2.1:compile
[INFO] +- javax.mail:mail:jar:1.4:compile
[INFO] |  \- javax.activation:activation:jar:1.1:compile
[INFO] \- net.tanesha.recaptcha4j:recaptcha4j:jar:0.0.7:compile
[INFO] -------

Thanks

3
springmavenweblogicaspectj
Can you provide a stack trace? Its possible you a missing a dependency for Spring. – CodeChimp
stacktrace added. i m sure the missing library is inside the WEB-INF\lib and I only get this exception when I add my custom jar file to classpath. – Sammy
It looks like you are missing javax.validation.ValidationFactory. Can you confirm that is in your classpath somewhere? – CodeChimp
yes, i m sure it is there, as I can see the validation-api jar file in my lib folder and I get the exception only when I add my other spring project ( jar file) in the classpath – Sammy
Just a guess - maybe you have more than one jar in your classpath that contains the ValidatorFactory class, so it has no idea which one to use. – Display Name is missing

3 Answers

0
votes

If you are using maven to build your jar, try to build your jar file with the dependencies embedded and test it, the below link can help you to do so:

How can I create an executable JAR with dependencies using Maven?

0
votes

The dependency tree shows:

  • two versions of commons-logging: 1.1 and 1.1.1
  • two versions of slf4j: 1.5.6 and 1.6.1
  • javax.transaction has scoped compiled instead of provided
  • various versions of Hibernate artifacts from different sources org.hibernate:com.springsource.org.hibernate:jar:3.3.2.GA:compile org.hibernate:com.springsource.org.hibernate.annotations:jar:3.4.0.GA:compile org.hibernate:hibernate-validator:jar:4.2.0.Final:compile

As ClassLoader loads resources without any determined or predefined order, adding a jar file may have changed this order and class conflicts are now visible - either inside the EAR/WAR itself or between the application server and the application.

It is not obvious to point the conflict source with information provided but it is probably org.hibernate:hibernate-validator and you should align its version with core package, so 3.3.2.GA from com.springsource too.

To get the diagnostic clear, run WebLogic JVM with -verbose:class option and look at stderr output. The latest loaded resources before the failure and log of previously loaded related classes are the best clues to eliminate such a conflict created by packaging.

If conflict comes from a application server package and you cannot align to that same version, WebLogic allows you to set class loading filtering by package to force your own version to be loaded. Please refer to section Using a Filtering Classloader from classloading documentation.

0
votes

It sounds like a Jar Hell... If you have different versions of the same jar, your container only loads the first one... now, imagine if it loads version 5 of jar 1, and version 2 of the dependent jar 2 (but the correct was version 5 too)... and can get a big crash in your system... to prevent it, some container just don't load none versions, and give some messages like ClassNotFoundException.