From 41e3037d4b5b2fdb08836e17671b9488445b5a5b Mon Sep 17 00:00:00 2001
From: Looly <loolly@aliyun.com>
Date: Wed, 4 Sep 2024 17:22:25 +0800
Subject: [PATCH] fix code

---
 .../main/java/org/dromara/hutool/http/client/Request.java   | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/hutool-http/src/main/java/org/dromara/hutool/http/client/Request.java b/hutool-http/src/main/java/org/dromara/hutool/http/client/Request.java
index 1ed86f1ef..420e21d6d 100644
--- a/hutool-http/src/main/java/org/dromara/hutool/http/client/Request.java
+++ b/hutool-http/src/main/java/org/dromara/hutool/http/client/Request.java
@@ -384,7 +384,11 @@ public class Request implements HeaderOperation<Request> {
 
 		// 根据内容赋值默认Content-Type
 		if (StrUtil.isBlank(header(HeaderName.CONTENT_TYPE))) {
-			header(HeaderName.CONTENT_TYPE, body.contentType(charset()), true);
+			final String contentType = body.contentType(charset());
+			// 如果用户自定义的Header为null，不调用，防止实现类中可能的空指针问题
+			if(null != contentType){
+				header(HeaderName.CONTENT_TYPE, contentType, true);
+			}
 		}
 
 		return this;