springboot如何通过不同的策略动态调用不同的实现类

public interface UserService { 
    //返回用户的主要任务
    String task();
}

@Service("student")
public class StudentServiceImpl implements UserService {
    @Override
    public String task() {
        return "学习";
    }
}

@Service("teacher")
public class TeacherServiceImpl implements UserService {
    @Override
    public String task() {
        return "教书";
    }
}

@Service
public class UserContext { 
    @Autowired
    Map<String, UserService> userMap;
 
    public UserService getUserService(String type) {
        return userMap.get(type);
    }
}

public class User { 
    private String type; 
    private String task; 
    public String getType() {
        return type;
    }
 
    public void setType(String type) {
        this.type = type;
    }
 
    public String getTask() {
        return task;
    }
 
    public void setTask(String task) {
        this.task = task;
    }
}

@RestController
@RequestMapping("/user")
public class UserController { 
    @Autowired
    UserContext userContext;
 
    @PostMapping("/getTask")
    public String getTask(@RequestBody User user) {
        UserService userService = userContext.getUserService(user.getType());
        return userService.task();
    }
}

public interface ExecuteService {    
    ExecuteEnum getCode();
    // 业务方法
    void execute();
}

@Service
public class FirstExecuteServiceImpl implements ExecuteService {    
    @Override
    public ExecuteEnum getCode() {
        return ExecuteEnum.FIRST;
    }
    
    public void execute() {
        System.out.println("11111111111");
    }
}

@Service
public class SecondExecuteServiceImpl implements ExecuteService {    
    @Override
    public ExecuteEnum getCode() {
        return ExecuteEnum.SECOND;
    }
    
    public void execute() {
        System.out.println("222222222");
    }
}

    public enum ExecuteEnum {
        FIRST,
        SECOND,;
    }

@Component
public class ExecuteServiceFactory implements ApplicationContextAware {
    
    private final static Map<ExecuteEnum, ExecuteService> EXECUTE_SERVICES = new HashMap<>();
    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        Map<String, ExecuteService> types = applicationContext.getBeansOfType(ExecuteService.class);
        types.values().forEach(e -> EXECUTE_SERVICES.putIfAbsent(e.getCode(), e));
    }    
}

@Component
public class ExecuteServiceFactory implements InitializingBean {
    @Autowired
    private List<ExecuteService> executeServices;
    public final static Map<ExecuteEnum, ExecuteService> EXECUTE_SERVICES = new HashMap<>();
    @Override
    public void afterPropertiesSet() throws Exception {
        executeServices.forEach(l -> EXECUTE_SERVICES.putIfAbsent(l.getCode(), l));
    }
}