SpringBoot 集成Hystrix熔断

前文接 SpringBoot Eureka集群配置

1、pom

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
        </dependency>

2、application.yml

eureka:
  client:
    serviceUrl: #注册中心的注册地址
      defaultZone: http://127.0.0.1:7001/eureka/
server:
  port: 9003  #服务端口号
spring:
  application:
    name: service-consumer #服务名称--调用的时候根据名称来调用该服务的方法

3、EurekaConsumer_hystrix_9003

@SpringBootApplication
@EnableEurekaClient
@EnableCircuitBreaker//该注解是开启断路器功能
public class EurekaConsumer_hystrix_9003 {
    @Bean
    @LoadBalanced   //启用负载均衡机制
    public RestTemplate restTemplate() {
        return new RestTemplate();
    }

    public static void main(String[] args) {
        SpringApplication.run(EurekaConsumer_hystrix_9003.class, args);
    }
}

4、TestController

@RestController
public class TestController {
    private final String url = "http://service-provider";
    @Autowired
    RestTemplate restTemplate;

    @RequestMapping("/get")
    @HystrixCommand(fallbackMethod = "getFallbackMethod", commandKey = "get")//熔断器指定操作的方法
    public String getUser() {
        return restTemplate.getForObject(url + "/get", String.class);
    }

    //熔断器方法  建议把熔断方法放在service中去处理
    public String getFallbackMethod() {
        return "error";
    }
}