Troubleshooting
Problem
I have a process application, and I need to add a java service.
I created my jar file with my class and in a sub folder I included all the required libraries.
Then I import the jar file as a Server file in my Process Designer without any error.
My managed asset is loaded correctly
Then I open the Services tab, and I click on the plus sign and I create a “New External Service”. I select the option "Java service from server file" and then I select the server file that I just uploaded, then the class it is correctly recognized, but when I click on finish button I receive the error
CWTBG0019E: Unexpected exception during execution. Exception information: 'com.ibm.bpm.common.discovery.exception.DiscoveryException: JD-ClassNotFound : Class metadata could not be discovered for class MyClass from 2063.819f2c2a-040e-4551-8a11-03042b47373d container due to java.lang.ClassNotFoundException'.
Symptom
I receive the following popup error:
Looking in the SystemOut.log file you see the following exception
[2/20/25 8:16:22:847 PST] 0000017c ReflectionSer E CWLLG2229E: An exception occurred in an EJB call. Error: org.apache.poi.ss.usermodel.Font
java.lang.NoClassDefFoundError: org.apache.poi.ss.usermodel.Font
at java.lang.Class.forNameImpl(Native Method)
at java.lang.Class.forName(Class.java:411)
at com.lombardisoftware.core.Classes.createClass(Classes.java:99)
at com.lombardisoftware.core.Classes.getClassMetaData(Classes.java:185)
at com.lombardisoftware.server.ejb.reflection.ReflectionServicesCore$1.execute(ReflectionServicesCore.java:74)
at com.lombardisoftware.server.core.ManagedAssetClassLoaderUtil.executeWithManagedAssetClassLoader(ManagedAssetClassLoaderUtil.java:58)
at com.lombardisoftware.server.ejb.reflection.ReflectionServicesCore.getClassMetaData(ReflectionServicesCore.java:72)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:90)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:55)
at java.lang.reflect.Method.invoke(Method.java:508)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:344)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:198)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
at com.lombardisoftware.utility.spring.TransactionInterceptor$2.call(TransactionInterceptor.java:70)
at com.lombardisoftware.utility.spring.ProgrammaticTransactionSupport.executeWithNoTransaction(ProgrammaticTransactionSupport.java:937)
at com.lombardisoftware.utility.spring.ProgrammaticTransactionSupport.execute(ProgrammaticTransactionSupport.java:487)
at com.lombardisoftware.utility.spring.TransactionInterceptor.invoke(TransactionInterceptor.java:68)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
at com.lombardisoftware.utility.spring.CoreEntryInterceptor.invoke(CoreEntryInterceptor.java:44)
at com.lombardisoftware.utility.spring.PSCoreEntryInterceptor.invoke(PSCoreEntryInterceptor.java:14)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:220)
at com.sun.proxy.$Proxy164.getClassMetaData(Unknown Source)
at com.lombardisoftware.client.delegate.ReflectionServicesDelegateDefault$1.execute(ReflectionServicesDelegateDefault.java:150)
at com.lombardisoftware.client.delegate.ReflectionServicesDelegateDefault$1.execute(ReflectionServicesDelegateDefault.java:148)
at com.lombardisoftware.server.ejb.EjbCallHandler.handleEjbCall(EjbCallHandler.java:44)
at com.lombardisoftware.server.ejb.EjbCallHandler$1.run(EjbCallHandler.java:106)
at java.security.AccessController.doPrivileged(AccessController.java:746)
at com.lombardisoftware.server.ejb.EjbCallHandler.handleEjbCallInDelegateDefault(EjbCallHandler.java:104)
at com.lombardisoftware.client.delegate.ReflectionServicesDelegateDefault.getClassMetaData(ReflectionServicesDelegateDefault.java:148)
at com.ibm.bpmsdk.tools.repo.client.ExternalServiceRepoHelperImpl.getClassMetaData(ExternalServiceRepoHelperImpl.java:180)
at com.ibm.bpm.java.discovery.impl.JavaDiscoveryAdapter.generateInterfaceWrapper(JavaDiscoveryAdapter.java:111)
at com.ibm.bpm.common.discovery.DiscoveryAdapter.getInterfaceWrapper(DiscoveryAdapter.java:76)
at com.ibm.bpm.common.discovery.impl.ExternalServiceGenerator.discoverContent(ExternalServiceGenerator.java:159)
at com.ibm.bpmsdk.tools.repo.client.ExternalServiceRepoHelperImpl.discoverContent(ExternalServiceRepoHelperImpl.java:248)
at com.ibm.bpmsdk.model.util.ExternalServiceHelper.discoverContent(ExternalServiceHelper.java:347)
at com.ibm.bpmsdk.model.util.ExternalServiceHelper.createBPMNExternalServiceDefinition(ExternalServiceHelper.java:256)
at com.ibm.bpmsdk.model.util.ExternalServiceHelper.createBPMNExternalServiceDefinition(ExternalServiceHelper.java:220)
[…]
Caused by: java.lang.ClassNotFoundException
at java.lang.ClassLoader.findClass(ClassLoader.java:516)
at java.lang.ClassLoader.loadClassHelper(ClassLoader.java:948)
at java.lang.ClassLoader.loadClass(ClassLoader.java:893)
at com.lombardisoftware.server.core.ManagedAssetClassLoader.loadClass(ManagedAssetClassLoader.java:280)
at java.lang.ClassLoader.loadClass(ClassLoader.java:876)
... 141 more
The above it clearly shows that the main class selected requires the class
org.apache.poi.ss.usermodel.Font
and that it cannot be found by the class loader
Caused by: java.lang.ClassNotFoundException
Document Location
Worldwide
[{"Type":"MASTER","Line of Business":{"code":"LOB76","label":"Data Platform"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSBYVB","label":"IBM Cloud Pak for Business Automation"},"ARM Category":[{"code":"a8m0z0000001iUXAAY","label":"Design-\u003EBAW App Development"}],"ARM Case Number":"TS018549923","Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"All Versions"},{"Type":"MASTER","Line of Business":{"code":"LOB76","label":"Data Platform"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SS8JB4","label":"IBM Business Automation Workflow"},"ARM Category":[{"code":"a8m50000000CccuAAC","label":"Process and Service Engine-\u003EService Engine-\u003EManaged Asset Class Loader (MACL)"}],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"All Versions"}]
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Document Information
Modified date:
26 February 2025
UID
ibm17183800