Non-escaped closing curly brace in RegEx results in initialization error on Android

[manuel2295]

Affects: <5.2.4.RELEASE>

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I am trying to use UriComponentsBuilder.newInstance() in my android application. But I keep getting this exception upon initialization. This happens starting from version 5.2.4.RELEASE.

java.lang.ExceptionInInitializerError
        at org.springframework.web.util.UriComponentsBuilder.newInstance(UriComponentsBuilder.java:172)
 Caused by: java.util.regex.PatternSyntaxException: Syntax error in regexp pattern near index 96
    ^(([^:/?#]+):)?(//(([^@\[/?#]*)@)?(\[[\p{XDigit}:.]*[%\p{Alnum}]*]|[^\[/?#:]*)(:(\d*(?:\{[^/]+?})?))?)?([^?#]*)(\?([^#]*))?(#(.*))?

[sbrannen]

This appears to be a regression introduced in #24470 that only affects Android applications.

273812f#diff-b7ee321c4c2864dd3493c171d139fc498e11de4ef18cfc57dee3c6f5a84e3dc7L83

[sbrannen]

Fixed via f0aa4f4

[sbrannen]

@manuel2295,

Congratulations on opening your first GitHub issue ever. 👍

The fix for this regression was applied to Spring Framework 5.2.x in commit 5a5f118 and will be available in upcoming snapshots for 5.2.18.

We would be grateful if you could verify that the fix works for you in 5.2.18.BUILD-SNAPSHOT and post back here with a comment to let us know. Details on how to consume snapshots can be found here.

Thanks

[sbrannen]

Our CI server appears to be down at the moment, so I'm not sure when the snapshot will be published.

[sbrannen]

Snapshots for 5.2.18 have been published now. So feel free to try it out and report back.