Given
Map myJson = ...
Document doc = new Document(myJson)
and myJson contains a value which is itself a Map, encoding fails:
org.bson.codecs.configuration.CodecConfigurationException: Can't find a codec for class java.util.LinkedHashMap.
at org.bson.codecs.configuration.RootCodecRegistry.get(RootCodecRegistry.java:74)
at org.bson.codecs.configuration.RootCodecRegistry.get(RootCodecRegistry.java:60)
at com.mongodb.codecs.DocumentCodec.writeValue(DocumentCodec.java:168)
at com.mongodb.codecs.DocumentCodec.encode(DocumentCodec.java:127)
at com.mongodb.codecs.DocumentCodec.encode(DocumentCodec.java:44)
at com.mongodb.protocol.message.RequestMessage.addDocument(RequestMessage.java:111)
at com.mongodb.protocol.message.RequestMessage.addCollectibleDocument(RequestMessage.java:102)