GH-3657: Fix DeepSeek tool call content null issue

Acacian · Acacian · commit 55067ccef518 · 2025-07-14T22:52:48.000+09:00
Closes #3657 * Set content = "__tool_call__" when content is null and toolCalls are present * Prevents schema validation errors in downstream clients * Add unit test: ChatClientResponseTests.whenAssistantMessageHasOnlyToolCalls_thenContentIsToolCallMarker * Apply code style: import formatting, copyright year
diff --git a/models/spring-ai-deepseek/src/main/java/org/springframework/ai/deepseek/DeepSeekChatModel.java b/models/spring-ai-deepseek/src/main/java/org/springframework/ai/deepseek/DeepSeekChatModel.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2023-2024 the original author or authors.
+ * Copyright 2023-2025 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/spring-ai-model/src/main/java/org/springframework/ai/chat/messages/AssistantMessage.java b/spring-ai-model/src/main/java/org/springframework/ai/chat/messages/AssistantMessage.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2023-2024 the original author or authors.
+ * Copyright 2023-2025 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

Original file line number	Diff line number	Diff line change
`@@ -1,5 +1,5 @@`
`1`	`1`	`/*`
`2`		`- * Copyright 2023-2024 the original author or authors.`
	`2`	`+ * Copyright 2023-2025 the original author or authors.`
`3`	`3`	`*`
`4`	`4`	`* Licensed under the Apache License, Version 2.0 (the "License");`
`5`	`5`	`* you may not use this file except in compliance with the License.`