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spring-framework/spring-web
Patrick StrawdermanandSebastien Deleuze 24e66b63d1 Refine StringUtils#uriDecode and update documentation
Refine the StringUtils#uriDecode method in the following ways:
- Use a StringBuilder instead of ByteArrayOutputStream, and only decode
  %-encoded sequences.
- Use HexFormat.fromHexDigits to decode hex sequences.
- Decode to a byte array that is only allocated if encoded sequences are
  encountered.

This commit adds another optimization mainly for the use case where
there is no encoded sequence, and updates the Javadoc of both
StringUtils#uriDecode and UriUtils#decode to match the implementation.

Signed-off-by: Patrick Strawderman <pstrawderman@netflix.com>
Co-Authored-by: Sebastien Deleuze <sebastien.deleuze@broadcom.com>

Closes gh-35253
2025-07-29 21:44:26 +02:00
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