fix:fix fetching wrong PEER_SERVICE in SCG filter.

spring-cloud-tencent-commons/src/main/java/com/tencent/cloud/common/metadata/filter/gateway/MetadataFirstScgFilter.java

@@ -63,7 +63,14 @@ public class MetadataFirstScgFilter implements GlobalFilter, Ordered {
 		// TODO The peer namespace is temporarily the same as the local namespace
 		metadataContext.putSystemMetadata(MetadataConstant.SystemMetadataKey.PEER_NAMESPACE,
 				MetadataContext.LOCAL_NAMESPACE);
-		metadataContext.putSystemMetadata(MetadataConstant.SystemMetadataKey.PEER_SERVICE, route.getId());
+		if (route != null) {
+			metadataContext.putSystemMetadata(MetadataConstant.SystemMetadataKey.PEER_SERVICE,
+					route.getUri().getAuthority());
+		}
+		else {
+			metadataContext.putSystemMetadata(MetadataConstant.SystemMetadataKey.PEER_SERVICE,
+					exchange.getRequest().getURI().getAuthority());
+		}
 		metadataContext.putSystemMetadata(MetadataConstant.SystemMetadataKey.PEER_PATH,
 				exchange.getRequest().getURI().getPath());
 
@@ -71,5 +78,4 @@ public class MetadataFirstScgFilter implements GlobalFilter, Ordered {
 
 		return chain.filter(exchange);
 	}
-
 }