fix:fix ClassNotFoundException while not importing openfeign when using circuit-breaker module. (#269)

CHANGELOG.md

@@ -9,3 +9,4 @@
 - [Upgrade: fix third-party lib CVEs & upgrade core spring libs version](https://github.com/Tencent/spring-cloud-tencent/pull/237)
 - [change escape way into encode](https://github.com/Tencent/spring-cloud-tencent/pull/251)
 - [feat:support reading configuration from application.yml or application.properties.](https://github.com/Tencent/spring-cloud-tencent/pull/259)
+- [fix:fix ClassNotFoundException while not importing openfeign when using circuit-breaker module.](https://github.com/Tencent/spring-cloud-tencent/pull/269)

spring-cloud-starter-tencent-polaris-circuitbreaker/src/main/java/com/tencent/cloud/polaris/circuitbreaker/PolarisFeignClientAutoConfiguration.java

@@ -25,6 +25,7 @@ import com.tencent.polaris.factory.api.DiscoveryAPIFactory;
 
 import org.springframework.boot.autoconfigure.AutoConfigureAfter;
 import org.springframework.boot.autoconfigure.AutoConfigureBefore;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
 import org.springframework.cloud.openfeign.FeignAutoConfiguration;
 import org.springframework.context.annotation.Bean;
@@ -42,6 +43,7 @@ import static org.springframework.core.Ordered.HIGHEST_PRECEDENCE;
 @ConditionalOnProperty(value = "spring.cloud.polaris.circuitbreaker.enabled",
 		havingValue = "true", matchIfMissing = true)
 @Configuration(proxyBeanMethods = false)
+@ConditionalOnClass(name = "org.springframework.cloud.openfeign.FeignAutoConfiguration")
 @AutoConfigureAfter(PolarisContextAutoConfiguration.class)
 @AutoConfigureBefore(FeignAutoConfiguration.class)
 public class PolarisFeignClientAutoConfiguration {