db.indexInverse.find({_id:ObjectId("5a153409b9c52933c8aab068")}).pretty()

Document vraiDoc = collectionIndexInverse.find(Filters.eq("_id", new ObjectId(""" + idDoc + """))).first();

Bson query = (Bson) new BsonString("{ _id:ObjectId("" + idDoc + "")}");
Document vraiDoc = collectionIndexInverse.find(query).first();

Bson query = (Bson) new BsonString("{ _id:ObjectId(idDoc)}");
Document vraiDoc = collectionIndexInverse.find(query).first();