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fastjson 2.0.61版本发布

FASTJSON 2.0.61 Release Notes

Release Date: 07 Feb 2026 Tag: 2.0.61 (170f71f)

Overview

This is a regularly scheduled maintenance release with feature enhancements, performance improvements, and bug fixes. Users should upgrade as needed.

Changes & Bug Fixes

1. Fixed issue where Jackson's @JsonProperty on methods was being ignored in record types #3893
2. Fixed multiple ArrayIndexOutOfBoundsException issues in JSONReaderUTF8, JSONReaderASCII, and JSONReader #3883
3. Improved performance when parsing JSON with numerous escape characters #3889
4. Fixed conflict where global Date writer overrides @JSONField format #3864
5. Fixed TypeUtils.castToTimestamp compatibility issues when upgrading from 1.2.83 #3906 #3907
6. Added support for serializing non-finite numbers (NaN, Infinity) as strings #3911
7. Added default value support for getString and other getXXX methods #3880
8. Fixed double quotes issue in TypeUtils.cast with Long global converter #3932
9. Added Java 8 TimeModule support including improved YearMonth support #3934 #3935
10. Fixed scientific notation floating point deserialization errors #3917 #3939 #3955
11. Added serialization support for org.w3c.dom.Node #3960
12. Fixed exception when parsing object keys with emoji and escape characters #3928
13. Fixed generic type inference for List subclasses during deserialization #3926
14. Added support for custom error messages in JSON Schema validation #1559
15. Added parse(InputStream) overload with default context #3946
16. Fixed DirectByteBuffer UnsupportedOperationException for java.nio.ByteBuffer#array #3894
17. Added support for composing multiple filters (PropertyFilter, PropertyPreFilter, etc.) #3877
18. Fixed incorrect overflow check when parsing BigInteger as Double
19. Enhanced security checks in hex digit processing
20. Improved readString performance in JSONReaderUTF8/JSONReaderUTF16
21. Fixed various issues with WriteNulls, ErrorOnNullForPrimitives, NotWriteDefaultValue, and other features
22. Added ProGuard rules for fields affected by reflection operations
23. Fixed cast error when using -Dfastjson2.creator=reflect #1563

Maven Dependency Configuration

Standard Version

<dependency>
    <groupId>com.alibaba.fastjson2</groupId>
    <artifactId>fastjson2</artifactId>
    <version>2.0.61</version>
</dependency>

Android 5 Optimized Version

</tr></table> 

... (truncated)

• db4221c 2.0.61.android8
• f4790b9 simplify space check
• a13020a Fix 1563 android8 (#3848)
• 49f44e3 fix: resolve conflict where global Date writer overrides @​JSONField format, f...
• 73df32d Fixed issue 3883. Add according unit test.
• dc63608 Exclude some fields in proguard rule which would be affected by reflection op
• c8582b5 fix issue #3880 (#3881)
• b03848f cherry-pick 0e08a1fa61ad926b3249caa0ade72388ed361bdf
• cfb5853 bug fix
• See full diff in compare view

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