com.fasterxml.jackson.databind.deser.BeanDeserializerFactory#com.fasterxml.jackson.databind.cfg.DeserializerFactoryConfig源码实例Demo

@Override
public ObjectMapper getContext(Class<?> type) {
	// TypeResolver
	SimpleAbstractTypeResolver abstractTypeResolver = new SimpleAbstractTypeResolver();
	abstractTypeResolver.addMapping(List.class, ArrayList.class);
	abstractTypeResolver.addMapping(Set.class, HashSet.class);
	abstractTypeResolver.addMapping(Map.class, HashMap.class);

	// Serializer
	DefaultSerializerProvider serializerProvider = new DefaultSerializerProvider.Impl();

	// Deserializer
	DeserializerFactoryConfig deserializerFactoryConfig = new DeserializerFactoryConfig().withAbstractTypeResolver(abstractTypeResolver);
	BeanDeserializerFactory deserializerFactory = new BeanDeserializerFactory(deserializerFactoryConfig);
	DefaultDeserializationContext.Impl deserializationContext = new DefaultDeserializationContext.Impl(deserializerFactory);

	// ObjectMapper
	ObjectMapper objectMapper = new ObjectMapper(null, serializerProvider, deserializationContext);
	objectMapper = objectMapper.enableDefaultTypingAsProperty(ObjectMapper.DefaultTyping.OBJECT_AND_NON_CONCRETE, "type");
	objectMapper = objectMapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
	objectMapper = objectMapper.disable(SerializationFeature.FAIL_ON_EMPTY_BEANS);

	return objectMapper;
}
 

/**
 * Method used by module registration functionality, to construct a new bean
 * deserializer factory
 * with different configuration settings.
 */
@Override
public DeserializerFactory withConfig(DeserializerFactoryConfig config)
{
    if (_factoryConfig == config) {
        return this;
    }
    /* 22-Nov-2010, tatu: Handling of subtypes is tricky if we do immutable-with-copy-ctor;
     *    and we pretty much have to here either choose between losing subtype instance
     *    when registering additional deserializers, or losing deserializers.
     *    Instead, let's actually just throw an error if this method is called when subtype
     *    has not properly overridden this method; this to indicate problem as soon as possible.
     */
    ClassUtil.verifyMustOverride(BeanDeserializerFactory.class, this, "withConfig");
    return new BeanDeserializerFactory(config);
}
 

@Override
public DeserializerFactory withConfig(DeserializerFactoryConfig config)
{
    if (_factoryConfig == config) {
        return this;
    }
    return new StrictDeserializerFactory(config);
}
 

private StrictObjectMapper(BlockAllocator allocator)
{
    super(JSON_FACTORY);
    _serializerFactory = SERIALIZER_FACTORY;

    ImmutableMap<Class<?>, JsonDeserializer<?>> desers = ImmutableMap.of(
            FederationRequest.class, createRequestDeserializer(allocator),
            FederationResponse.class, createResponseDeserializer(allocator),
            LambdaFunctionException.class, new LambdaFunctionExceptionSerDe.Deserializer());
    SimpleDeserializers deserializers = new SimpleDeserializers(desers);
    DeserializerFactoryConfig dConfig = new DeserializerFactoryConfig().withAdditionalDeserializers(deserializers);
    _deserializationContext = new DefaultDeserializationContext.Impl(new StrictDeserializerFactory(dConfig));
    // required by LambdaInvokerFactory
    disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
}
 

private StrictDeserializerFactory(DeserializerFactoryConfig config)
{
    super(config);
}
 

private static DeserializerFactoryConfig getDeserializerFactoryConfig(ObjectMapper objectMapper) {
	return ((BasicDeserializerFactory) objectMapper.getDeserializationContext().getFactory()).getFactoryConfig();
}
 

private static DeserializerFactoryConfig getDeserializerFactoryConfig(ObjectMapper objectMapper) {
	return ((BasicDeserializerFactory) objectMapper.getDeserializationContext().getFactory()).getFactoryConfig();
}
 

private static DeserializerFactoryConfig getDeserializerFactoryConfig(ObjectMapper objectMapper) {
	return ((BasicDeserializerFactory) objectMapper.getDeserializationContext().getFactory()).getFactoryConfig();
}
 

private static DeserializerFactoryConfig getDeserializerFactoryConfig(ObjectMapper objectMapper) {
	return ((BasicDeserializerFactory) objectMapper.getDeserializationContext().getFactory()).getFactoryConfig();
}
 

protected BasicDeserializerFactory(DeserializerFactoryConfig config) {
    _factoryConfig = config;
}
 

public BeanDeserializerFactory(DeserializerFactoryConfig config) {
    super(config);
}
 

public CustomBeanDeserializerFactory(DeserializerFactoryConfig config) {
  super(config);
}
 

private static DeserializerFactoryConfig getDeserializerFactoryConfig(ObjectMapper objectMapper) {
	return ((BasicDeserializerFactory) objectMapper.getDeserializationContext().getFactory()).getFactoryConfig();
}
 

private static DeserializerFactoryConfig getDeserializerFactoryConfig(ObjectMapper objectMapper) {
	return ((BasicDeserializerFactory) objectMapper.getDeserializationContext().getFactory()).getFactoryConfig();
}
 

/**
 * Method for getting current {@link DeserializerFactoryConfig}.
  *<p>
 * Note that since instances are immutable, you can NOT change settings
 * by accessing an instance and calling methods: this will simply create
 * new instance of config object.
 */
public DeserializerFactoryConfig getFactoryConfig() {
    return _factoryConfig;
}
 

protected abstract DeserializerFactory withConfig(DeserializerFactoryConfig config);