Pretty print JSON output of Spring Boot Actuator endpoints

Question

Spring Boot Actuator provides several endpoints to monitor an application as:

/metrics
/b         


        

Answer 1

Do the following:

@Configuration
public class JacksonConfig {

    @Autowired
    private ObjectMapper objectMapper; //reuse the pre-configured mapper


    @PostConstruct
    public void setup() {
        objectMapper.enable(SerializationFeature.INDENT_OUTPUT);
        //whatever else you need
    }


}

This works because Spring Boot uses an ObjectMapper bean to perform all the JSON related operations.

Note however that this configuration will pretty print all JSON outputs, not just the actuator related stuff.

UPDATE

The answer from @DaveSyer is obviously better! I hadn't found the HttpMapperProperties object which is used to configure Jackson. This is it's Javadoc