What are the JSON mapper libraries supported by Spring Boot?

Question

The Jackson library is the default integrated JSON mapper library with Spring Boot. I want to know what other libraries are available or integrated with Spring Boot, and how to implement them in our Spring Boot application.

Answer 1

Spring boot has integrated with 3 json mapper api

• Jackson(default)
• Gson
• JSON-B

If we want to use for example Gson then simply add below dependency in your pom file

<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
</dependency>

But we already have by default Jackson implemented which we can exclude either using maven or pragmatically

Using maven

In pom file add exclusion for starter-json under exclusions tag

<exclusions>
            <exclusion>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-json</artifactId>
            </exclusion>
        </exclusions>

programmatically

@SpringBootApplication(exclude = {JacksonAutoConfiguration.class})
public class GsonSpringBootApplication {

    public static void main(String[] args) {
        SpringApplication.run(GsonSpringBootApplication.class, args);
    }
}