Feign整合sentinel实现fallbackFactory容错降级

通过整合sentinel实现Feign调用服务，当调用出错后实现容错降级。
1、引入pom

<dependency>    <groupId>com.alibaba.cloud</groupId>    <artifactId>spring-cloud-starter-alibaba-sentinel</artifactId></dependency>

2、配置yaml

# feign启用sentinelfeign:  sentinel:enabled: true

2、创建Fallback容错类

@Componentpublic class TestServiceFallbackFactory implements FallbackFactory<TestFeign> {    @Override    public WageServiceFeign create(Throwable throwable) { // 可以将异常继续抛出，也可以实现自定义的内容 throw new RuntimeException(throwable.getMessage());    }}

修改@FeignClient

//加入fallbackFactory指向容错类@FeignClient(value = "b-service",fallbackFactory = TestServiceFallbackFactory .class))public interface TestFeign {   ....}