Oliver Becker opened SPR-6278 and commented
Method org.springframework.expression.common.CompositeStringExpression.getValue(...) simply calls ObjectUtils.getDisplayString for creating the resulting string.
Since Spring provides a ConversionService, a proper toString TypeConverter should be used instead.
(if canConvert returns true, otherwise use getDisplayString)
Affects: 3.0 RC1
Referenced from: commits 3361de3