java Spring启动依赖注入请求范围的bean
我试图将一个bean注入到另一个bean中,但我想通过直接自动连接到类中来实现,而不是通过“@Configuration class”。以下是控制器类:
@Controller
public class RestfulSourceController {
@Autowired
Response response;
@RequestMapping(value="/rest", method=RequestMethod.GET, produces="application/json")
@ResponseBody
public Object greeting() {
return response.getResponse();
}
}
下面是“@Configuration”类,每个类中都声明了一个bean
@Configuration
class RequestConfigurationBeans {
@Autowired
private ServicesRepository servicesRepo;
@Autowired
private HttpServletRequest request;
@Bean(name = 'requestServiceConfig')
@Scope(value=WebApplicationContext.SCOPE_REQUEST, proxyMode=ScopedProxyMode.TARGET_CLASS)
public ServiceModel requestServiceConfig(){
String serviceName = RequestUtil.getServiceName(this.request)
ServiceModel serviceModel = servicesRepo.findByName(serviceName)
return serviceModel
}
}
及
@Configuration
public class ServletFilterBeans {
/* I don't want to autowire here, instead I want to autowire in the Response class directly, instead of passing the bean reference into the constructor
@Autowired
ServiceModel requestServiceConfig
*/
@Bean
@Scope(value=WebApplicationContext.SCOPE_REQUEST, proxyMode=ScopedProxyMode.TARGET_CLASS)
public Response response(){
return new Response(/*requestServiceConfig*/);
}
}
最后是响应类:
class Response {
//I want to Autowire the bean instead of passing the reference to the constructor
@Autowired
ServiceModel requestServiceConfig
Object response
public Response(/*ServiceModel requestServiceConfig*/){
//this.requestServiceConfig = requestServiceConfig
if (requestServiceConfig.getType() == 'rest'){
this.response = getRestfulSource()
}
}
private Object getRestfulSource(){
RestTemplate restTemplate = new RestTemplate()
String url = requestServiceConfig.sourceInfo.get('url')
return restTemplate.getForObject(url, Object.class)
}
}
然而,当我像这样设置依赖注入时,我会得到一个空指针异常,因为自动连线bean“requestServiceConfig”没有实例化。我如何通过自动连接将依赖注入bean,这样就不必通过构造函数将引用传递给bean
共 (0) 个答案