spring4 获取泛型信息

public interface TestService<Question> {

public String test();

}

@Service
public class TestServiceImpl implements TestService<Question> {

@Override
public String test() {
String abc = "abc";
return abc;
}

}

@Controller
@RequestMapping("/test")
public class TestController {

@Autowired
private TestService<Question> testService;

@RequestMapping
public String index(){
testService.test();
ResolvableType resolvableType2 =  ResolvableType.forField(ReflectionUtils.findField(TestController.class, "testService"));
System.out.println(resolvableType2.getGeneric(0).resolve());
return "index";
}

}