spring boot 启动类 添加组件

@SpringBootApplication
@EnableEurekaClient
@EnableCircuitBreaker
@ServletComponentScan
public class SaleApp {

	@Bean
	@LoadBalanced
	public RestTemplate getRestTemplate() {
		return new RestTemplate();
	}

	public static void main(String[] args) {
		new SpringApplicationBuilder(SaleApp.class).web(true).run(args);
	}

}

@Service
//@DefaultProperties(defaultFallback = "getMemberFallback")
public class MemberService {

	@Autowired
	private RestTemplate restTpl;

	@HystrixCommand(fallbackMethod = "getMemberFallback", groupKey = "MemberGroup", commandKey = "MemberCommandKey",
			commandProperties = {
			@HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "1000")
	}, threadPoolProperties = {
			@HystrixProperty(name = "coreSize", value = "2")
	})
	public Member getMember(Integer id) {
		try {
			Thread.sleep(2000);
		} catch (Exception e) {

		}

		Member member = restTpl.getForObject(
				"http://spring-hy-member/member/{id}", Member.class, id);
		return member;
	}

	public Member getMemberFallback(Integer id) {
		Member m = new Member();
		m.setId(1);
		m.setName("error member");
		return m;
	}

}

原文地址：https://www.cnblogs.com/zfzf1/p/8550706.html