From 35746aaf5a3e6eab9181fedb37fd8cc00793469c Mon Sep 17 00:00:00 2001
From: aofall <10182210+aofall@users.noreply.github.com>
Date: Tue, 5 Sep 2023 11:22:21 +0800
Subject: [PATCH] Fix rest protocol NPE when using apache-http-client (#12916)
 (#12984)

---
 .../dubbo/remoting/http/restclient/HttpClientRestClient.java   | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/dubbo-remoting/dubbo-remoting-http/src/main/java/org/apache/dubbo/remoting/http/restclient/HttpClientRestClient.java b/dubbo-remoting/dubbo-remoting-http/src/main/java/org/apache/dubbo/remoting/http/restclient/HttpClientRestClient.java
index 0344a4aab9..f8f85411af 100644
--- a/dubbo-remoting/dubbo-remoting-http/src/main/java/org/apache/dubbo/remoting/http/restclient/HttpClientRestClient.java
+++ b/dubbo-remoting/dubbo-remoting-http/src/main/java/org/apache/dubbo/remoting/http/restclient/HttpClientRestClient.java
@@ -93,7 +93,8 @@ public class HttpClientRestClient implements RestClient {
             future.complete(new RestResult() {
                 @Override
                 public String getContentType() {
-                    return response.getFirstHeader("Content-Type").getValue();
+                    Header header = response.getFirstHeader("Content-Type");
+                    return header == null ? null : header.getValue();
                 }
 
                 @Override