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Fix string return conversion in DefaultToolCallResultConverter #3756

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@JM-Lab JM-Lab commented Jul 7, 2025

Return String tool results directly (or "null" if null) when returnType is String.class, instead of serializing them to JSON. This removes unnecessary formatting while preserving existing behavior for other types.

@@ -22,6 +22,7 @@
import java.lang.reflect.Type;
import java.util.Base64;
import java.util.Map;
import java.util.Optional;
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@valery1707 valery1707 Jul 10, 2025

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This import is needed now?

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Thanks for the review! I've squashed the optimization commits into one and pushed the update.

@JM-Lab JM-Lab force-pushed the fix-string-returntype-no-json-conversion branch from 77ecb6c to e01be9e Compare July 11, 2025 07:10
import org.springframework.ai.util.json.JsonParser;
import org.springframework.lang.Nullable;

import javax.imageio.ImageIO;

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As far as I can see in neighboring PRs (1, 2, 3), it is recommended to maintain the order of imports in a certain structure:

  1. java.*
  2. other imports
  3. org.springframework.*
  4. static imports

Also, please avoid using wildcard imports .*

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Fixed imports, squashed commits, and pushed. Thanks for the review!

@JM-Lab JM-Lab force-pushed the fix-string-returntype-no-json-conversion branch from e01be9e to 5864958 Compare July 11, 2025 10:10
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3 participants