修改84模块
- pom.xml加入以下依赖
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-openfeign</artifactId>
</dependency>
- yml
server:
port: 84
spring:
application:
name: nacos-order-consumer
cloud:
nacos:
discovery:
server-addr: localhost:8848
sentinel:
transport:
dashboard: localhost:8080
port: 8719
service-url:
nacos-user-service: http://nacos-payment-provider
#对Feign的支持
feign:
sentinel:
enabled: true
- 带@FeignClient注解的业务接口
package com.young.springcloud.alibaba.service;
import com.young.springcloud.entities.CommonResult;
import com.young.springcloud.entities.Payment;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
@FeignClient(value = "nacos-payment-provider",fallback = PaymentFallbackService.class)
public interface PaymentService
{
@GetMapping(value = "/paymentSQL/{id}")
public CommonResult<Payment> paymentSQL(@PathVariable("id") Long id);
}
- PaymentFallbackService实现类
package com.young.springcloud.alibaba.service;
import com.young.springcloud.entities.CommonResult;
import com.young.springcloud.entities.Payment;
import org.springframework.stereotype.Component;
@Component
public class PaymentFallbackService implements PaymentService
{
@Override
public CommonResult<Payment> paymentSQL(Long id)
{
return new CommonResult<>(44444,"服务降级返回,---PaymentFallbackService",new Payment(id,"errorSerial"));
}
}
- CircleBreakerController类加入以下代码
// OpenFeign
@Resource
private PaymentService paymentService;
@GetMapping(value = "/consumer/paymentSQL/{id}")
public CommonResult<Payment> paymentSQL(@PathVariable("id") Long id) {
return paymentService.paymentSQL(id);
}
- 主启动类添加@EnableFeignClients启动Feign的功能
@EnableDiscoveryClient
@SpringBootApplication
@EnableFeignClients
public class OrderNacosMain84
{
public static void main(String[] args) {
SpringApplication.run(OrderNacosMain84.class, args);
}
}
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