Jackson ObjectMapper

TODO

https://www.baeldung.com/jackson-object-mapper-tutorial

https://stackoverflow.com/questions/10113512/readvalue-and-readtree-in-jackson-when-to-use-which

You only need one ObjectMapper bean per application

1. One mistake people make is create many instances of ObjectMapper in many classes across the application.
2. This is just a waste of memory. There will be so many ObjectMappers in the memory.
3. Their behavior will not be consistent. Using only one ObjectMapper across the application will make sure that the behavior is consistent across the application.

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class ObjectMapperConfig {

    @Bean
    public ObjectMapper objectMapper() {
        ObjectMapper mapper = new ObjectMapper();
        mapper.configure(SerializationFeature.INDENT_OUTPUT, true); // Example customization
        // Add other configurations as needed
        return mapper;
    }
}

Sample Implementations

https://github.com/explorer436/programming-playground/tree/main/java-playground/json-processing