Jackson Release 2.18.2

Patch version of 2.18, released November 27, 2024.

Following fixes are included in this patch release.

Changes, core

Streaming

• #1359: Non-surrogate characters being incorrectly combined when JsonWriteFeature.COMBINE_UNICODE_SURROGATES_IN_UTF8 is enabled

Databind

• #4733: Wrong serialization of Type Ids for certain types of Enum values
• #4742: Deserialization with Builder, External type id, @JsonCreator failing
• #4777: StdValueInstantiator.withArgsCreator is now set for creators with no arguments
• #4783: Possibly wrong behavior of @JsonMerge
• #4787: Wrong String.format() in StdDelegatingDeserializer hides actual error
• #4788: EnumFeature.WRITE_ENUMS_TO_LOWERCASE overrides @JsonProperty values
• #4790: Fix @JsonAnySetter issue with "setter" method (related to #4639)
• #4807: Improve FactoryBasedEnumDeserializer to work better with XML module
• #4810: Deserialization using @JsonCreator with renamed property failing (since 2.18)

Changes, data formats

XML

• #678: XML module not registered correctly when setting a custom SerializerFactory
• #682: MismatchedInputException encountered while deserializing XML to an Enum type using a factory method

Changes, data types

Java 8 Date/Time

• #308: Can't deserialize OffsetDateTime.MIN: Invalid value for EpochDay

Changes, other

Jackson-jr

• #172: Record deserialisation with instance methods fails