Input stream is closed before reaching to ASPECT in Spring

Question

I have a requirement where I need to call aspect before processing the rest endpoint method, I have created an annotation and annotating the rest endpoint,

I am able to process the request but when reading InpuStream it is already closed inseide aspect. The code snippet is attached I am using spring boot 1.5

GitHub https://github.com/primeap/user-auth-poc.git

Once I get input stream in the Aspect I will cache it before using it, but my problem is at the current code it is throwing an

io exception stream is closed

at line

Map jsonMap = mapper.readValue(request.getInputStream(), Map.class);

Application

@SpringBootApplication
@ComponentScan(basePackages = { "org.ap" })
public class UserAuthPocApplication {
    public static void main(String[] args) {
        SpringApplication.run(UserAuthPocApplication.class, args);
    }
}

Annotation

@Target({ ElementType.METHOD })
@Retention(RetentionPolicy.RUNTIME)
public @interface HasPrivilegeXX {

}

Aspect

@Aspect
@Component
public class MyPrivilegeAspect {
    @Before("@annotation(HasPrivilegeXX)")
    public boolean logBeforeAllMethods(JoinPoint joinPoint) {
        HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder.currentRequestAttributes())
                .getRequest();
        try {
            ObjectMapper mapper = new ObjectMapper();
            Map<String, Object> jsonMap = mapper.readValue(request.getInputStream(), Map.class);
            System.out.println("In aspect " + jsonMap.toString());
        } catch (Exception e) {
            e.printStackTrace();
        }
        return true;
    }
}

Rest Endpoint

@RestController
@RequestMapping("/api")
public class Api {
    @PostMapping("/hi")
    @HasPrivilegeXX()
    public String hiPost(@RequestBody User user) {
        System.out.println(user.toString());
        return "Hi...";
    }
}

User

public class User {
    private String name;
    private String company;
    private Integer id;
}