I have an input that is a Jackson PoJo and I need to convert it to a different Jackson Pojo. All examples I am finding are from Json -> Pojo and Pojo -> Json. Is creating a custom serializer the way to convert from one Pojo to another?

CodePudding user response：

ModelMapper, like OneCricketeer said, or MapStruct can do the job of mapping one POJO to another POJO.

CodePudding user response：

If the field names match, or have aliases defined, you could simply serialize one object and deserialize into the other; e.g.

objectMapper.readValue(objectMapper.writeValueAsBytes(object1), Object2.class)

If the fields don't align one-to-one, there isn't a direct way

Therefore, you have some other options

• Copy constructor / Factory method : new Object2(object1) or Object2.from(object1)
• Builder / setter : object2.setX(object1.getX()); // repeat for all fields
• Use a library like ModelMapper (effectively the same as options above)
• Use reflection (very brittle and only to be used if you don't have access to modify either class)