springcloud微服务(十七) - Hystrix订单微服务调用支付服务

男娘i 2023-10-06 20:53 55阅读 0赞

## 一、新建module ##

cloud-consumer-feign-hystrix-order80

## 二、pom文件 ##

<dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-actuator</artifactId>
            </dependency>
            <dependency>
                <groupId>otc.orientsec</groupId>
                <artifactId>cloud-api-commons</artifactId>
                <version>1.0-SNAPSHOT</version>
            </dependency>
            <dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <optional>true</optional>
            </dependency>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-openfeign</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
            </dependency>
    
        </dependencies>

## 三、建application.yml ##

server:
      port: 80
    
    spring:
      application:
        name: cloud-order-server
    
    eureka:
      client:
        register-with-eureka: true
        fetch-registry: true
        service-url:
          defaultZone: http://eureka7001.com:7001/eureka

## 四、主启动类 ##

@SpringBootApplication
    @EnableDiscoveryClient
    @EnableFeignClients
    public class OpenFeignHystrixOrder80 {
        public static void main(String[] args)
        {
            SpringApplication.run(OpenFeignHystrixOrder80.class,args);
        }
    }

当使用openfeign做客户端负载均衡时，需要两步

1. 主启动类加注解@EnableFeignClients

2. 创建service的接口，接口使用注解@FeignClient(value = "CLOUD-PAYMENT-SERVER")标注

其中value的值为注册中心的服务名。

## 五、创建业务类 ##

5.1 openfeign的service接口

@Component
    @FeignClient(value = "CLOUD-PAYMENT-SERVER")
    public interface HystrixPaymentService {
        @GetMapping("/payment/info/ok/{id}")
        String paymentInfo_ok(@PathVariable("id") Integer id);
    
        //模拟业务流程长，耗时长
        @GetMapping("/payment/info/timeout/{id}")
        String paymentInfo_timeout(@PathVariable("id") Integer id);
    }

5.2 controller

@RestController
    public class HystrixOrderController {
    
        @Autowired
        private HystrixPaymentService hystrixPaymentService;
    
        @GetMapping("/consumer/payment/info/ok/{id}")
        public String paymentInfo_ok(@PathVariable("id") Integer id)
        {
            return hystrixPaymentService.paymentInfo_ok(id);
        }
    
        //模拟业务流程长，耗时长
        @GetMapping("/consumer/payment/info/timeout/{id}")
        public String paymentInfo_timeout(@PathVariable("id") Integer id)
        {
            return hystrixPaymentService.paymentInfo_timeout(id);
        }
    }

## 六、测试 ##