Marco Carletti created CAMEL-23378:
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Summary: Block String to InputStream conversion in
SpringTypeConverter
Key: CAMEL-23378
URL: https://issues.apache.org/jira/browse/CAMEL-23378
Project: Camel
Issue Type: Bug
Affects Versions: 4.20.0, 4.18.2
Reporter: Marco Carletti
When a Camel Spring Boot route writes a String body to a file: endpoint with
checksumFileAlgorithm enabled, the body is incorrectly converted to a
FileInputStream by Spring's ObjectToObjectConverter, which treats the String
content as
a file path:
ConversionFailedException: Failed to convert from type [java.lang.String]
to type [java.io.FileInputStream] for value [some file content]
Caused by: FileNotFoundException: some file content (No such file or
directory)
This happens because the file component's checksum code path
(FileOperations.java:321) calls
exchange.getMessage().getBody(FileInputStream.class). On plain Camel this
returns null (no matching converter) and falls through to the safe
InputStream path. On Spring Boot, SpringTypeConverter delegates to Spring's
GenericConversionService, which finds ObjectToObjectConverter. This converter
sees the FileInputStream(String) constructor and calls new
FileInputStream("some
file content") — interpreting the message body as a file path instead of
data.
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