使用@Autowired獲取正確的實例

Question

我在運行並打開休息服務時遇到了一些問題，我看到我的服務實例獲得了@Proxy值。下面你可以看到類，我有：

初始化器類：

public class AllureWebInitializer implements WebApplicationInitializer { 

    @Override 
    public void onStartup(ServletContext servletContext) throws ServletException { 
     createDispatcherServlet(servletContext); 
     initializeListener(servletContext); 
    } 

    private void initializeListener(ServletContext servletContext) { 
     AnnotationConfigWebApplicationContext rootContext = createContext(); 
     servletContext.addListener(new ContextLoaderListener(rootContext)); 
    } 

    private void createDispatcherServlet(final ServletContext context) { 
     AnnotationConfigWebApplicationContext dispatcherServlet = new AnnotationConfigWebApplicationContext(); 
     dispatcherServlet.register(AllureWebConfig.class); 

     ServletRegistration.Dynamic dispatcher = context.addServlet(AllureWebConstants.DISPATCHER, new DispatcherServlet(dispatcherServlet)); 
     dispatcher.setLoadOnStartup(1); 
     dispatcher.addMapping(AllureWebConstants.SLASH); 
    } 

    private AnnotationConfigWebApplicationContext createContext() { 
     AnnotationConfigWebApplicationContext context = new AnnotationConfigWebApplicationContext(); 
     context.register(AllureWebConfig.class); 
     return context; 
    } 

} 

配置類：

@Configuration 
@Import(AllureServiceConfig.class) 
@ComponentScan(basePackages = {"com.allure.events.web.controller"}) 
@EnableWebMvc 
public class AllureWebConfig extends WebMvcConfigurerAdapter { 

    @Autowired 
    private ApplicationContextProvider applicationContextProvider; 

    @Override 
    public void addResourceHandlers(ResourceHandlerRegistry registry) { 
     registry.addResourceHandler(AllureWebConstants.RESOURCES_DOUBLE_WILDCARD) 
      .addResourceLocations(AllureWebConstants.RESOURCES); 
    } 

    @Bean 
    public ApplicationContextProvider applicationContextProvider() { 
     return applicationContextProvider; 
    } 

    @Bean 
    public MessageSource messageSource() { 
     ReloadableResourceBundleMessageSource messageSource; 
     messageSource = new ReloadableResourceBundleMessageSource(); 
     messageSource.setBasename("classpath:META-INF/web/resources/release"); 
     messageSource.setUseCodeAsDefaultMessage(true); 
     return messageSource; 
    } 

    @Override 
    public void configureMessageConverters(List<HttpMessageConverter<?>> converters) { 
     final MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter(); 
     final ObjectMapper objectMapper = new ObjectMapper(); 
     objectMapper.setSerializationInclusion(Include.NON_NULL); 
     converter.setObjectMapper(objectMapper); 
     converters.add(converter); 
     super.configureMessageConverters(converters); 
    } 
} 

控制器類：

@Controller 
public class SupplierEndpoint extends AllureEndpoint { 

    @Autowired 
    SupplierService supplierService; 

    @RequestMapping(value = AllureWebConstants.SUPPLIERS, method = RequestMethod.GET, 
      produces = MediaType.APPLICATION_JSON_VALUE) 
    @ResponseBody 
    public List<Supplier> getSuppliers() { 
     List<Supplier> suppliers = getSuppliersList(supplierService.getSuppliers()); 
     return suppliers; 
    } 
} 

服務接口

public interface SupplierService { 

    public List<SupplierDto> getSuppliers(); 
} 

服務默認地將Impl

@Service 
public class SupplierServiceImpl implements SupplierService { 

    @Autowired 
    private SupplierMapper supplierMapper; 

    @Autowired 
    private SupplierDtoHelper supplierHelper; 

    @Override 
    @Transactional 
    public List<SupplierDto> getSuppliers() { 
     List<Supplier> suppliers = supplierMapper.getSuppliers(); 
     List<SupplierDto> dtos = new ArrayList<SupplierDto>(); 
     for (Supplier supplier : suppliers) { 
      dtos.add(supplierHelper.convertEntityToDto(supplier)); 
     } 
     return dtos; 
    } 

} 

，如果我調試，我看到實例值是：

supplierService - $ Proxy28 | - > h = JdkDynamicAopProxy

有人可以指導我嗎？ Regards， Edgardo Quiroz

Answer 1

當你使用Spring時，這不是問題。 Spring Framework使用Proxy來使不同的功能成爲可能。 在這裏你有一個事務性註釋和代理被用來實現它。