Make JSON payload fields case insensitive when mapping to Java Object in REST API developed using SpringBoot

Question

I am working on REST API developed using SpringBoot application. Here I want to make the fields in the payload(JSON) as case insensitive when mapping to a Java Object. Below

Answer 1

Well, if its Spring Boot application you can have this in your application.properties file: spring.jackson.mapper.accept_case_insensitive_properties=true

or if you use yaml:

spring:
  jackson:
    mapper:
      accept_case_insensitive_properties: true

Answer 2

I recently found a solution via Annotation config:

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

@Configuration
public class Config {

    @Bean
    public ObjectMapper objectMapper() {
        ObjectMapper mapper = new ObjectMapper();
        mapper.configure(MapperFeature.ACCEPT_CASE_INSENSITIVE_PROPERTIES, true);
        return mapper;
    }

}

I'm using these dependencies:

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.3.3.RELEASE</version>
</parent>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-thymeleaf</artifactId>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-core</artifactId>
    </dependency>

    <dependency>
        <groupId>com.fasterxml.jackson.module</groupId>
        <artifactId>jackson-module-jaxb-annotations</artifactId>
        <version>2.6.5</version>
    </dependency>

Good luck.