SPEL: no viable alternative at input '#{' [JAVA_SPEL_EXPRESSION_SYNTAX]

[syedyusufh]

Started seeing the below error alert for the annotation mentioned since v4.24.0, application builds and works perfectly fine otherwise.

SPEL: no viable alternative at input '#{' [JAVA_SPEL_EXPRESSION_SYNTAX]

@ConditionalOnExpression("#{${some.property.delay-seconds:0} > 0}")

[BoykoAlex]

You can disable SPEL validations via settings:

You are seeing an error because we added syntax validation for SPEL expressions. This error doesn't affect the compilation so this error is just for information purposes. STS shows error because it expects the SPEL expression not to have #{ prefix and } suffix. It expects SPEL without prefix and suffix: @ConditionalOnExpression("${some.property.delay-seconds:0} > 0")

[martinlippert]

Probably something we need to support as well for the validation

[BoykoAlex]

The question is whether SPEL wrapped in #{} in @ConditionalOnExpression is a valid syntax. I'm not sure it is...

[syedyusufh]

@BoykoAlex I can confirm it is a valid expression as application with the mentioned SPEL works dynamically as expected

[BoykoAlex]

I think the reason for this might be the ability to nest SPEL expressions inside SPEL expressions (to be verified)

[BoykoAlex]

Looks like Spring allows it either wrapped in #{} or without and then it just automatically wraps it in #{} at runtime.

Fixed with 80de787