springcloud常用注解代码示例

1. @EnableDiscoveryClient

@SpringBootApplication
@EnableDiscoveryClient
public class MyApp {
    public static void main(String[] args) {
        SpringApplication.run(MyApp.class, args);
    }
}

2. @EnableFeignClients

@SpringBootApplication
@EnableDiscoveryClient
@EnableFeignClients
public class MyApp {
    public static void main(String[] args) {
        SpringApplication.run(MyApp.class, args);
    }
}

3. @FeignClient

@FeignClient(name = "service-provider")
public interface HelloClient {
    @RequestMapping(value = "/hello", method = RequestMethod.GET)
    String hello();
}

4. @RestController

@RestController
public class HelloController {
    @Autowired
    private HelloClient helloClient;

    @RequestMapping(value = "/hello", method = RequestMethod.GET)
    public String hello() {
        return helloClient.hello();
    }
}

5. @EnableCircuitBreaker

@SpringBootApplication
@EnableDiscoveryClient
@EnableFeignClients
@EnableCircuitBreaker
public class MyApp {
    public static void main(String[] args) {
        SpringApplication.run(MyApp.class, args);
    }
}

6. @HystrixCommand

@FeignClient(name = "service-provider")
public interface HelloClient {
    @RequestMapping(value = "/hello", method = RequestMethod.GET)
    @HystrixCommand(fallbackMethod = "fallback")
    String hello();

    default String fallback() {
        return "fallback";
    }
}

7. @EnableHystrixDashboard

@SpringBootApplication
@EnableDiscoveryClient
@EnableFeignClients
@EnableCircuitBreaker
@EnableHystrixDashboard
public class MyApp {
    public static void main(String[] args) {
        SpringApplication.run(MyApp.class, args);
    }
}

8. @EnableZuulProxy

@SpringBootApplication
@EnableDiscoveryClient
@EnableZuulProxy
public class MyApp {
    public static void main(String[] args) {
        SpringApplication.run(MyApp.class, args);
    }
}

9. @EnableConfigServer

@SpringBootApplication
@EnableDiscoveryClient
@EnableConfigServer
public class MyApp {
    public static void main(String[] args) {
        SpringApplication.run(MyApp.class, args);
    }
}

10. @RefreshScope

@RestController
@RefreshScope
public class ConfigController {
    @Value("${my.config}")
    private String config;

    @RequestMapping(value = "/config", method = RequestMethod.GET)
    public String config() {
        return config;
    }
}