Spring高阶用法之自定义业务对象组件化

@Autowired
HttpSession session;

@Autowired
HttpRequest httpRequest;

interface IPrincipal extends Serializable {
    IPrincipal get()
  }

 class PrincipalObjectFactory implements ObjectFactory<IPrincipal>, Serializable {
  @Override
  IPrincipal getObject() {
    def requestAttr = RequestContextHolder.currentRequestAttributes()
    def request = requestAttr.getRequest()
    def p = new PrincipalHelper(request).get()

    new IPrincipal() {
      @Override
      IPrincipal get() {
        p
      }
    }
  }

}

beanFactory.registerResolvableDependency(IPrincipal, new PrincipalObjectFactory())