fastjson2 is Alibaba's high‑performance Java JSON library that supports both JSON and the newer JSONB binary format. It offers full and partial parsing, Kotlin integration, Android 8+ compatibility, and schema validation, while providing Maven/Gradle artifacts for easy inclusion.
Highlights
Supports JSON & JSONB protocols with significant performance gains over its predecessor.
Provides both full‑parsing and partial‑parsing APIs for flexible data handling.
Includes official Kotlin, Android, and JSON Schema integration modules.
Distributed via Maven Central with separate artifacts for core, compatibility, and language extensions.
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alibaba · via GitHub
Context
Audience
Java developers needing a high‑speed JSON processing library, especially those working with Kotlin, Android, or requiring JSON Schema validation
DomainJava Development / Data Serialization
Formatopen‑source repository (GitHub) with documentation and benchmarks
Accessfree open source on GitHub; available through Maven Central