public interface IAService {
 
    //獲取客戶名，所有客戶都需要，但是需要針對(duì)不同客戶做不同實(shí)現(xiàn)
    String getCustomName();
}

//注意要給Service命名
@Service("customA")
public class IAServiceShijiazhuangImpl implements IAService{
   //A客戶的邏輯
    @Override
    public String getCustomName() {
        return "客戶A";
    }
}
//注意要給Service命名
@Service("customB")
public class IAServiceLinyiImpl implements IAService{
 //客戶B的邏輯
    @Override
    public String getCityName() {
        return "客戶B";
    }
}

@RestController
public class AController {
 
 
    //如果要給客戶A部署，這里寫(xiě)客戶A Service注解的名稱，上面配置的是customA
    @Qualifier("customA")
    IAService iaService;
    
    //不同地區(qū)需要有不同的邏輯，下面service實(shí)例化的正好是不同地區(qū)的實(shí)例
    @GetMapping("/name")
    public String getCustomName() {
        return iaService.getCityName();
    }
}

@RestController
public class AController {
 
    //根據(jù)配置文件中配置的參數(shù)決定實(shí)例化哪個(gè)實(shí)現(xiàn)類，解決上面問(wèn)題1
    @Resource(name="${local.name}")
    IAService iaService;
    
    //不同地區(qū)需要有不同的邏輯，下面service實(shí)例化的正好是不同地區(qū)的實(shí)例
    @GetMapping("/name")
    public String getCustomName() {
        return iaService.getCityName();
    }
}

public interface NoticeService {
    public String noticeUser(Long id);
}

@Service
public class NoticeServiceImpl1 implements NoticeService {
 public String noticeUser(Long id){
  return noticeServe1(id);
 }
}

@Service
public class NoticeServiceImpl2 implements NoticeService {
 public String noticeUser(Long id){
  return noticeServe2(id);
 }
}

@Controller
@RequestMapping("notice")
public class NoticeController{
 @Autowired
 NoticeService noticeService;
}

@Controller
@RequestMapping("notice")
public class NoticeController{
 @Autowired
 @Qualifier("impl1")
 NoticeService noticeService;
}

@Service("impl1")
public class NoticeServiceImpl1 implements NoticeService {
 public String noticeUser(Long id){
  return noticeServe1(id);
 }
}