openfeign整合sentinel进行降级

pom.xml

<dependency>
    <groupId>com.alibaba.cloudgroupId>
    <artifactId>spring-cloud-starter-alibaba-nacos-discoveryartifactId>
dependency>

<dependency>
    <groupId>org.springframework.cloudgroupId>
    <artifactId>spring-cloud-starter-openfeignartifactId>
dependency>

<dependency>
    <groupId>com.alibaba.cloudgroupId>
    <artifactId>spring-cloud-starter-alibaba-sentinelartifactId>
dependency>
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yml配置

#对feign的支持
feign:
  sentinel:
    enabled: true  #添加feign对sentinel的支持
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ProductFeignService （作用是当远程调用服务product-service发生异常的时候会执行ProductFeignFallBackService 的 get方法）

@FeignClient(value = "product-service", path = "/product", fallback = ProductFeignFallBackService.class)
public interface ProductFeignService {

    @RequestMapping("/{id}")
    public String get(@PathVariable Integer id);

}
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ProductFeignFallBackService

/**
 * @Description:
 * @Author: xu
 * @Data: 2024-2024/4/22-22
 * @Version: V1.0
 */
public class ProductFeignFallBackService implements ProductFeignService {

    @Override
    public String get(Integer id) {
        return "进入降级";
    }
}
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