No serializer found for class org.hibernate.proxy.pojo.bytebuddy.ByteBuddyInterceptor

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I came across this error while doing a tutorial with spring repository. It turned out that the error was made at the stage of building the service class for my entity.

In your serviceImpl class, you probably have something like:

    @Override
    public YourEntityClass findYourEntityClassById(Long id) {
      return YourEntityClassRepositorie.getOne(id);
    }

Change this to:

    @Override
    public YourEntityClass findYourEntityClassById(Long id) {
      return YourEntityClassRepositorie.findById(id).get();
    }

Basically getOne is a lazy load operation. Thus you get only a reference (a proxy) to the entity. That means no DB access is actually made. Only when you call it’s properties then it will query the DB. findByID does the call ‘eagerly’/immediately when you call it, thus you have the actual entity fully populated.

Take a look at this: Link to the difference between getOne & findByID

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