[Java] Open-Feign整合hystrix降级熔断实战记录

server:
port: 9000
spring:
application:
  name: my-test2 #服务的名称

@RestController
public class ShoppingController {
  @RequestMapping("/myTestBuy2")
  public String myTestBuy2(){
    //用来模拟服务超时
    try {
      Thread.sleep(6000);
    } catch (InterruptedException e) {
      e.printStackTrace();
    }
    return "购买成功――时间："+ new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date());
  }
}

<!--Open-Feign依赖-->
    <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-starter-openfeign</artifactId>
    </dependency>
    <!--hystrix依赖-->
    <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
    </dependency>

server:
port: 8000
spring:
application:
  name: my-test1 #服务的名称
#允许服务降级配置
feign:
hystrix:
  enabled: true
#自定义ribbon的超时时间 设置的要比hystrix-timeoutInMilliseconds超时时间大
ribbon:
#指的是建立连接后从服务器读取到可用资源所用的时间。
ReadTimeout: 10000
#指的是建立连接所用的时间，适用于网络状况正常的情况下，两端连接所用的时间，处理请求的超时时间，默认为5秒。
ConnectTimeout: 10000
hystrix:
command:
  default:
  execution:
    isolation:
    thread:
      #feign整合hystrix 光设置Hystrix超时没用的 要配合ribbon超时
      timeoutInMilliseconds: 5000
my-test2:
url: http://127.0.0.1:9000

@SpringBootApplication
@EnableFeignClients//开启open-feign
@EnableHystrix//开启降级熔断服务
public class MyTestApplication1 {
  public static void main(String[] args) {
    SpringApplication.run(MyTestApplication1.class,args);
  }
}

@RestController
public class TestController1 {
  @Autowired
  TestService1 testService1;
  @RequestMapping("/myTestBuy1")
  public String myTestBuy2(){
    return testService1.myTestBuy2();
  }
}

@Component
public class MyHystrix1 implements TestService1 {
  @Override
  public String myTestBuy2() {
    return "调用失败，该服务被熔断――时间："+ new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date());
  }
}

@FeignClient(name = "my-test2", url = "${my-test2.url}", fallback = MyHystrix1.class)
public interface TestService1 {
  @RequestMapping("/myTestBuy2")
  String myTestBuy2();
}