其他
面试官：Spring 中的 Service 有多个实现类，怎么注入？
专属福利
public interface HumanService { public String name();}@Servicepublic class TeacherServiceImpl implements HumanService { @Override public String name() { System.out.println("teacher"); return "teacher"; }}@Servicepublic class DoctorServiceImpl implements HumanService { @Override public String name() { System.out.println("doctor"); return "doctor"; }}
@RestControllerpublic class HumanController {
// @Resource(type = DoctorServiceImpl.class) //方法二 @Autowired @Qualifier("teacherServiceImpl") private HumanService humanService;
@RequestMapping("/name") public String name(){ return humanService.name(); }}public interface HumanService { public String name();}@Service("teacherService")public class TeacherServiceImpl implements HumanService { @Override public String name() { System.out.println("teacher"); return "teacher"; }}@Service("doctorService")public class DoctorServiceImpl implements HumanService { @Override public String name() { System.out.println("doctor"); return "doctor"; }}@RestControllerpublic class HumanController {
@Resource(name="doctorService") private HumanService humanService;
@RequestMapping("/name") public String name(){ return humanService.name(); }}我就知道你会点赞+“在看”