java - 如何通过Spring在Controller中添加构造函数

Question

我想将三个属性(companyTypes、carrierLists 和cabinLevels)初始化为全局变量:

@Controller
@RequestMapping("/backend/basic")
public class TicketRuleController {
    @Autowired
    private CarrierService carrierService;
    @Autowired
    private CabinLevelService cabinLevelService;
    @Autowired
    private CompanyTypeService companyTypeService;
    private List<DTOCompanyType> companyTypes = companyTypeService.loadAllCompanyTypes();
    private List<DTOCarrier> carrierLists = carrierService.loadAllCarriers();
    private List<DTOCabinLevel> cabinLevels = cabinLevelService.loadAllCabinLevel(); 
    ...
}

我该怎么做？

Answer 1

依赖注入(inject)完成后，有几种方法可以执行初始化:您可以使用@PostConstruct。一些方法的注释。例如:

@PostConstruct
public void initialize() {
   //do your stuff
}

或者你可以使用 Spring 的 InitializingBean界面。创建一个实现此接口(interface)的类。例如:

@Component
public class MySpringBean implements InitializingBean {


    @Override
    public void afterPropertiesSet()
            throws Exception {
       //do your stuff
    }
}