From 3445ab0c63974d2c27d79a75c6c059cb23fd6f37 Mon Sep 17 00:00:00 2001
From: liuxx <liuxx-u@outlook.com>
Date: Tue, 27 Aug 2019 11:09:56 +0800
Subject: [PATCH] fix Optional.of() throw NPE

fix Optional.of() throw NPE
---
 .../metadata/repository/DubboServiceMetadataRepository.java     | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spring-cloud-alibaba-dubbo/src/main/java/com/alibaba/cloud/dubbo/metadata/repository/DubboServiceMetadataRepository.java b/spring-cloud-alibaba-dubbo/src/main/java/com/alibaba/cloud/dubbo/metadata/repository/DubboServiceMetadataRepository.java
index 89abe70f..494a0030 100644
--- a/spring-cloud-alibaba-dubbo/src/main/java/com/alibaba/cloud/dubbo/metadata/repository/DubboServiceMetadataRepository.java
+++ b/spring-cloud-alibaba-dubbo/src/main/java/com/alibaba/cloud/dubbo/metadata/repository/DubboServiceMetadataRepository.java
@@ -616,7 +616,7 @@ public class DubboServiceMetadataRepository
 	}
 
 	protected void initSubscribedDubboMetadataService(String serviceName) {
-		Optional.of(loadBalancerClient.choose(serviceName))
+		Optional.ofNullable(loadBalancerClient.choose(serviceName))
 				.map(this::getDubboMetadataServiceURLs)
 				.ifPresent(dubboMetadataServiceURLs -> {
 					dubboMetadataServiceURLs.forEach(dubboMetadataServiceURL -> {