Laboratoire ICAR » Plateforme TXM

A 500 server error is raised when the concordance is opened.

Server side logs shows:

juil. 08, 2020 5:33:53 PM org.apache.catalina.core.ApplicationContext log
GRAVE: Exception while dispatching incoming RPC call
com.google.gwt.user.client.rpc.SerializationException: Type '[Ljava.lang.Object;' was not included in the set of types which can be serialized by this SerializationPolicy or its Class object could not be loaded. For security purposes, this type will not be serialized.: instance = [Ljava.lang.Object;@5a0ec79
    at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter.serialize(ServerSerializationStreamWriter.java:667)
    at com.google.gwt.user.client.rpc.impl.AbstractSerializationStreamWriter.writeObject(AbstractSerializationStreamWriter.java:130)
    at com.google.gwt.user.client.rpc.core.java.util.Arrays$ArrayList_CustomFieldSerializer.serialize(Arrays.java:71)
    at com.google.gwt.user.client.rpc.core.java.util.Arrays$ArrayList_CustomFieldSerializer.serializeInstance(Arrays.java:94)
    at com.google.gwt.user.client.rpc.core.java.util.Arrays$ArrayList_CustomFieldSerializer.serializeInstance(Arrays.java:34)
    at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter.serializeImpl(ServerSerializationStreamWriter.java:788)
    at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter.serialize(ServerSerializationStreamWriter.java:669)
    at com.google.gwt.user.client.rpc.impl.AbstractSerializationStreamWriter.writeObject(AbstractSerializationStreamWriter.java:130)
    at com.google.gwt.user.client.rpc.core.java.util.Map_CustomFieldSerializerBase.serialize(Map_CustomFieldSerializerBase.java:53)
    at com.google.gwt.user.client.rpc.core.java.util.HashMap_CustomFieldSerializer.serialize(HashMap_CustomFieldSerializer.java:39)
    at com.google.gwt.user.client.rpc.core.java.util.HashMap_CustomFieldSerializer.serializeInstance(HashMap_CustomFieldSerializer.java:51)
    at com.google.gwt.user.client.rpc.core.java.util.HashMap_CustomFieldSerializer.serializeInstance(HashMap_CustomFieldSerializer.java:28)
    at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWri...

Solution¶

Ensure all RPC commands don't use abstract classes. e.g replace List<String> with ArrayList<String>