How to change value of parameter in construction with AOP

Question

I want to get value of systemType variable from login token everytime I access to API, so I've written an AOP class :

@Aspect
@Configuration
public class AspectDatabaseService {
    Logger logger = LoggerFactory.getLogger(AspectDatabaseService.class);
    public int systemType;
    public int getSystemType() {
        return systemType;
    }
    
    public void setSystemType(int systemType) {
        this.systemType = systemType;
    }
    
    @Before("execution(* com.toshiba.mwcloud.gs.dbaas.service.impl.DatabaseServiceImpl.*(..))")
    public void before(JoinPoint joinPoint) {
.....
        systemType = getSystemTypeFromToken(token);
        logger.info("before called {0}", joinPoint.toString());
    }
    
    private HttpServletRequest getHttpServletRequest() {
           ......
    }
    
    private int getSystemTypeFromToken(String token) {
    ......
    }
}

And I have a class with constructor like this

public DatabaseServiceImpl(SingleDatabaseServiceImpl singleDatabaseService,
            MultiDatabaseServiceImpl multiDatabaseServiceImpl, OperatorDatabaseServiceImpl operatorDatabaseServiceImpl,
            AspectDatabaseService aspectDatabaseService) {
        this.aspectDatabaseService = aspectDatabaseService;
        this.systemType = aspectDatabaseService.getSystemType();
        if (systemType == SystemType.SINGLE.getCode()) {
            this.databaseAbstractService = singleDatabaseService;
        } else if (systemType == SystemType.MULTI.getCode()) {
            this.databaseAbstractService = multiDatabaseServiceImpl;
        } else {
            this.databaseAbstractService = operatorDatabaseServiceImpl;
        }
    }

But my AOP class is not worked, value of systemType in constructor of class DatabaseServiceImpl always returns 0 because Constructor still init before run AOP class

What should I do to change value in constructor ? Thanks a lot