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某些 Creative Cloud 应用程序、服务和功能在中国不可用。
After upgrading to AEM 6.2 or later version the application is failing with "Deserialization not allowed for class" errors (see example below).
java.lang.UnsupportedOperationException: Deserialization not allowed for class net.sf.ehcache.Element (on Thu Sep 21 12:29:55 CDT 2017) at org.kantega.notsoserial.DefaultNotSoSerial.preventDeserialization(DefaultNotSoSerial.java:256) at org.kantega.notsoserial.DefaultNotSoSerial.onBeforeResolveClass(DefaultNotSoSerial.java:248) at org.kantega.notsoserial.ObjectInputStreamClassVisitor.onBeforeResolveClass(ObjectInputStreamClassVisitor.java:48) at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1613) at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1518) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1774) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371) at net.sf.ehcache.store.disk.DiskStorageFactory.read(DiskStorageFactory.java:370) at net.sf.ehcache.store.disk.DiskStorageFactory.retrieve(DiskStorageFactory.java:886) at net.sf.ehcache.store.disk.Segment.decode(Segment.java:172) at net.sf.ehcache.store.disk.Segment.put(Segment.java:449) at net.sf.ehcache.store.disk.DiskStore.put(DiskStore.java:438) at net.sf.ehcache.store.FrontEndCacheTier.put(FrontEndCacheTier.java:267) at net.sf.ehcache.Cache.putInternal(Cache.java:1455) at net.sf.ehcache.Cache.put(Cache.java:1383) at net.sf.ehcache.Cache.put(Cache.java:1348)
This is caused by the nososerial security fix which is applied to AEM. To fix the error you can whitelist certain java classes allowing deserialization.
Add a whitelist file by adding this JVM parameter:
-Dnotsoserial.whitelist=is-deserialized.txt
-javaagent:notsoserial.jar -Dnotsoserial.whitelist=empty.txt -Dnotsoserial.dryrun=is-deserialized.txt