[jira] [Created] (CAMEL-24504) camel-spring-boot - extend the SpringTypeConverter String guard beyond InputStream targets

["Andrea Cosentino (Jira)" <ji...@apache.org>]

Andrea Cosentino created CAMEL-24504:
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             Summary: camel-spring-boot - extend the SpringTypeConverter String guard beyond InputStream targets
                 Key: CAMEL-24504
                 URL: https://issues.apache.org/jira/browse/CAMEL-24504
             Project: Camel
          Issue Type: Improvement
          Components: camel-spring-boot
            Reporter: Andrea Cosentino
            Assignee: Andrea Cosentino


CAMEL-23378 added a guard to {{SpringTypeConverter.convertTo()}}:

{code:java}
// do not attempt to convert String -> InputStream (or subclasses like FileInputStream).
// Spring's ObjectToObjectConverter finds FileInputStream(String) constructor and treats
// the String value as a file path instead of data content.
if (value instanceof String && InputStream.class.isAssignableFrom(type)) {
    return null;
}
{code}

(SpringTypeConverter:59)

The reasoning applies to more than {{InputStream}}. Spring's {{ObjectToObjectConverter}} will find any single-String constructor, so the same "treated as a file path rather than content" behaviour is reachable for {{FileReader}}, {{FileWriter}}, {{ZipFile}} and {{File}} targets, none of which the current guard covers.

*Proposal*

Either extend the guard to cover targets assignable to {{Reader}}, {{Writer}}, {{ZipFile}} and {{File}}, or - better, and in keeping with the comment's reasoning - invert it into an allowlist of target types that are safe to build from a String, so future JDK or Spring additions do not reopen the same shape.

Tests should cover at least the {{Reader}} and {{ZipFile}} cases alongside the existing {{InputStream}} one.

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_This issue was drafted by Claude Code on behalf of Andrea Cosentino._



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