Menu
I want to deserialize a JSON-Object with Jackson. Because the target is an interface I need to specify which implementation should be used.
This information could be stored in the JSON-Object, using @JsonTypeInfo-Annotation. But I want to specify the implementation in source code because it's always the same.
Is this possible?
420
How to deserialize Date from JSON using Jackson. In order to correct deserialize a Date field, you need to do two things: 1) Create a custom deserializer by extending StdDeserializer<T> class and override its deserialize(JsonParser jsonparser, DeserializationContext context) method.
Jackson uses default (no argument) constructor to create object and then sets value using setters. so you only need @NoArgsConstructor and @Setter.
The simple readValue API of the ObjectMapper is a good entry point. We can use it to parse or deserialize JSON content into a Java object. Also, on the writing side, we can use the writeValue API to serialize any Java object as JSON output.
Use a SimpleAbstractTypeResolver:
ObjectMapper mapper = new ObjectMapper(); SimpleModule module = new SimpleModule("CustomModel", Version.unknownVersion()); SimpleAbstractTypeResolver resolver = new SimpleAbstractTypeResolver(); resolver.addMapping(Interface.class, Implementation.class); module.setAbstractTypes(resolver); mapper.registerModule(module); If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
