title: Could not deserialize result from HTTP invoker remote service [...]; nested exception is java.lang.ClassNotFoundException:
body: <p>I am receiving the following error only when a shared library is added to my application on an IBM WebSphere instance (version 8.5.xx). The goal is to move a lot of shared libraries (jars) between some applications to a shared library on the server in order to reduce the war sizes of the applications. From what I have seen though, it doesn't matter if the war file size is reduced or not, whenever this shared library is added, we are seeing the below errors. </p>
  
  <pre><code>org.springframework.remoting.RemoteAccessException: Could not deserialize result from HTTP invoker remote service [&lt;URL&gt;]; nested exception is java.lang.ClassNotFoundException: com.example.models.ExampleModel
      at org.springframework.remoting.httpinvoker.HttpInvokerClientInterceptor.convertHttpInvokerAccessException(HttpInvokerClientInterceptor.java:221)
      at org.springframework.remoting.httpinvoker.HttpInvokerClientInterceptor.invoke(HttpInvokerClientInterceptor.java:153)
      at com.example.configuration.LoggingHttpInvokerProxyFactoryBean.invoke(LoggingHttpInvokerProxyFactoryBean.java:28)
      at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
      at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213)
      at com.sun.proxy.$Proxy305.getSomeListOfObjects(Unknown Source)
  ...
  ...
  ...
  Caused by: java.lang.ClassNotFoundException: com.example.models.ExampleModel
      at java.lang.Class.forNameImpl(Native Method)
      at java.lang.Class.forName(Class.java:403)
      at java.io.ClassCache$FutureValue.get(ClassCache.java:177)
      at java.io.ClassCache.get(ClassCache.java:148)
      at java.io.ObjectInputStream.resolveClass(ObjectInputStream.java:834)
      at org.springframework.core.ConfigurableObjectInputStream.resolveClass(ConfigurableObjectInputStream.java:78)
      at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:2017)
      at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1900)
      at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2194)
      at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1722)
      at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2439)
      at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2363)
      at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2221)
      at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1722)
      at java.io.ObjectInputStream.readObjectImpl(ObjectInputStream.java:540)
      at java.io.ObjectInputStream.readObject(ObjectInputStream.java:475)
      at org.springframework.remoting.httpinvoker.AbstractHttpInvokerRequestExecutor.doReadRemoteInvocationResult(AbstractHttpInvokerRequestExecutor.java:291)
      at org.springframework.remoting.httpinvoker.AbstractHttpInvokerRequestExecutor.readRemoteInvocationResult(AbstractHttpInvokerRequestExecutor.java:242)
      at org.springframework.remoting.httpinvoker.HttpComponentsHttpInvokerRequestExecutor.doExecuteRequest(HttpComponentsHttpInvokerRequestExecutor.java:248)
      at org.springframework.remoting.httpinvoker.AbstractHttpInvokerRequestExecutor.executeRequest(AbstractHttpInvokerRequestExecutor.java:137)
      at org.springframework.remoting.httpinvoker.HttpInvokerClientInterceptor.executeRequest(HttpInvokerClientInterceptor.java:202)
      at org.springframework.remoting.httpinvoker.HttpInvokerClientInterceptor.executeRequest(HttpInvokerClientInterceptor.java:184)
      at org.springframework.remoting.httpinvoker.HttpInvokerClientInterceptor.invoke(HttpInvokerClientInterceptor.java:150)
  </code></pre>
  
  <p>The following is a similar example of what the model class looks like on a smaller scale. I primarily wanted to note that it does indeed implement Serializable (using the default serialVersionUID):</p>
  
  <pre><code>package com.example.models.ExampleModel;
  
  public class ExampleModel implements Serializable {
      private static final long serialVersionUID = 1L;
      private String customerNumber = "";
  }
  </code></pre>
  
  <p>Any debugging ideas even would be greatly appreciated at a minimum.
  I also wanted to note, that calling this remoting method works fine when the shared library isn't added to the application on the server, but doesn't seem to work when the shared library is added. Also, the shared library on the server does not have the jar that contains the class that cannot be found. The jar with the class that cannot be found is in my WEB-INF/lib folder and I have verified that to be installed on the server.</p>