Jackson反序列化未在自定义反序列化程序上调用反序列化

我想反序列化表单的类:

public class TestFieldEncryptedMessage implements ITextMessage {

    @JsonProperty("text")
    @Encrypted(cipherAlias = "testAlias")
    private String text;

    public TestFieldEncryptedMessage() {
    }

    @JsonCreator
    public TestFieldEncryptedMessage(@JsonProperty("text") String text) {
        this.text = text;
    }

    public String getText() {
        return text;
    }

    public void setText(String text) {
        this.text = text;
    }
}

在对文本进行加密和反序列化的情况下,应在重新生成TestFieldEncryptedMessage实例之前取消对值的加密。

我采用的方法非常类似于: https://github.com/codesqueak/jackson-json-crypto

也就是说,我正在构建一个扩展SimpleModule的模块:

public class CryptoModule extends SimpleModule {
    public final static String GROUP_ID = "au.com.auspost.messaging";
    public final static String ARTIFACT_ID = "jackson-json-crypto";
    private EncryptedSerializerModifier serializerModifier;
    private EncryptedDeserializerModifier deserializerModifier;

    public CryptoModule() {
    }

   public CryptoModule addEncryptionService(final EncryptionService encryptionService) {
        serializerModifier = new EncryptedSerializerModifier(encryptionService);
        deserializerModifier = new EncryptedDeserializerModifier(encryptionService);
        return this;
    }

    @Override
    public String getModuleName() {
        return ARTIFACT_ID;
    }

    @Override
    public Version version() {
        return new Version(major, minor, patch, null, GROUP_ID, ARTIFACT_ID);
    }

    @Override
    public void setupModule(final SetupContext context) {
        if ((null == serializerModifier) || (null == deserializerModifier))
            throw new EncryptionException("Crypto module not initialised with an encryption service");
        context.addBeanSerializerModifier(serializerModifier);
        context.addBeanDeserializerModifier(deserializerModifier);
    }
}

如您所见,设置了两个修饰符:EncryptedSerializerModifier工作正常,由ObjectMapper调用,但EncryptedDeserializerModifier后面的反序列化程序被忽略。

如许多其他例子所示: How can I include raw JSON in an object using Jackson? ,我使用以下命令设置EncryptedDeserializerModifier:

public class EncryptedDeserializerModifier extends BeanDeserializerModifier {

    private final EncryptionService encryptionService;

    private Map<String, SettableBeanProperty> properties = new HashMap<>();

    public EncryptedDeserializerModifier(final EncryptionService encryptionService) {
        this.encryptionService = encryptionService;
    }

    @Override
    public BeanDeserializerBuilder updateBuilder(final DeserializationConfig config, final BeanDescription beanDescription, final BeanDeserializerBuilder builder) {

        Encrypted annotation = beanDescription.getType().getRawClass().getAnnotation(Encrypted.class);
        Iterator it = builder.getProperties();

        while (it.hasNext()) {
            SettableBeanProperty p = (SettableBeanProperty) it.next();

            if (null != p.getAnnotation(Encrypted.class)) {
                JsonDeserializer<Object> current = p.getValueDeserializer();
                properties.put(p.getName(), p);

                builder.addOrReplaceProperty(p.withValueDeserializer(new EncryptedJsonDeserializer(encryptionService, current, p)), true);
            }
        }
        return builder;
    }
}

最后,encryptedjsondersializer本身会重写以下内容:

@Override
public Object deserialize(final JsonParser parser, final DeserializationContext context) throws JsonMappingException {
    JsonDeserializer<?> deserializer = baseDeserializer;

    if (deserializer instanceof ContextualDeserializer) {
        deserializer = ((ContextualDeserializer) deserializer).createContextual(context, property);
    }

    return service.decrypt(parser, deserializer, context, property != null ? property.getType() : type);
}

@Override
public JsonDeserializer<?> createContextual(final DeserializationContext context, final BeanProperty property) throws JsonMappingException {
    JsonDeserializer<?> wrapped = context.findRootValueDeserializer(property.getType());
    return new EncryptedJsonDeserializer(service, wrapped, property);
}

调用了createContext()方法,但未调用反序列化方法。整个执行过程中的属性始终是“文本”属性,因此我似乎拥有正确的上下文。

有人知道为什么ObjectMapper找不到正确的反序列化程序吗?

编辑 补充 implements ITextMessage 解密类,我认为这是一个不重要的细节,但结果是问题的原因。