1# Enables pretty print for JSON output
2spring.jackson.serialization.indent_output=true
3
4# Configures default date format
5spring.jackson.date-format=yyyy-MM-dd
6
7# Sets property naming strategy
8spring.jackson.property-naming-strategy=SNAKE_CASE

1import org.springframework.boot.autoconfigure.jackson.Jackson2ObjectMapperBuilderCustomizer;
2import org.springframework.context.annotation.Bean;
3import org.springframework.context.annotation.Configuration;
4import com.fasterxml.jackson.databind.DeserializationFeature;
5import com.fasterxml.jackson.databind.SerializationFeature;
6
7@Configuration
8public class JacksonConfig {
9
10    @Bean
11    public Jackson2ObjectMapperBuilderCustomizer customizer() {
12        return builder -> {
13            builder.failOnUnknownProperties(false); // Ignore unknown properties in JSON
14            builder.featuresToDisable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
15            builder.featuresToDisable(DeserializationFeature.FAIL_ON_NULL_FOR_PRIMITIVES);
16        };
17    }
18}

1import org.springframework.context.annotation.Bean;
2import org.springframework.context.annotation.Configuration;
3import com.fasterxml.jackson.databind.ObjectMapper;
4import com.fasterxml.jackson.databind.PropertyNamingStrategies;
5import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
6
7@Configuration
8public class CustomObjectMapperConfig {
9
10    @Bean
11    public ObjectMapper objectMapper() {
12        ObjectMapper mapper = new ObjectMapper();
13        // Set naming strategy
14        mapper.setPropertyNamingStrategy(PropertyNamingStrategies.SNAKE_CASE);
15        // Register JavaTimeModule for new date/time API
16        mapper.registerModule(new JavaTimeModule());
17        // Configure additional settings as needed
18        mapper.findAndRegisterModules();
19        return mapper;
20    }
21}

1import com.fasterxml.jackson.core.JsonGenerator;
2import com.fasterxml.jackson.databind.JsonSerializer;
3import com.fasterxml.jackson.databind.SerializerProvider;
4import com.fasterxml.jackson.databind.annotation.JsonSerialize;
5
6import java.io.IOException;
7
8// Custom Serializer
9public class CustomDateSerializer extends JsonSerializer<Date> {
10    @Override
11    public void serialize(Date value, JsonGenerator gen, SerializerProvider serializers) throws IOException {
12        DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
13        gen.writeString(dateFormat.format(value));
14    }
15}
16
17// Applying the Custom Serializer
18public class Event {
19    @JsonSerialize(using = CustomDateSerializer.class)
20    private Date eventDate;
21
22    // Getters and setters
23}