Hutool is designed as a modular library, allowing developers to import specific tools or the entire suite via the Hutool-all package :
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The 3.9 series (specifically ) focused on broadening the library's utility across core Java functions, providing "sweeter" alternatives to standard library code. Key Updates in Hutool 3.9 Hutool 3.9 UPD
The 3.9 update introduced several performance improvements and architectural changes to keep the library efficient:
java.lang.NullPointerException: null at cn.hutool.core.util.StrUtil.blankToDefault(StrUtil.java:204) Hutool is designed as a modular library, allowing
The blank() method in 3.9 had been "optimized" to handle certain Unicode spaces more aggressively. But in doing so, it now called toString() on a CharSequence before checking if the input was null. If the input was null, it exploded.
File handling in 3.9 was upgraded to better leverage Java's New I/O (NIO) channels. FileUtil.copy() and FileUtil.move() functions were rewritten under the hood to minimize heap memory allocation during large file transfers, significantly boosting system throughput for I/O-bound applications. Threading and Concurrency Enhancements But in doing so, it now called toString()
: The library is divided into modules like hutool-core (basic tools), hutool-log (logging facade), and hutool-setting (enhanced properties).
: Include the hutool-ai module in your pom.xml .
3.9 UPD作为3.x系列的收官之作，既承载了该系列的成熟经验，也为后续版本的演进铺平了道路。
随着AI技术在各行各业的深度渗透，Hutool AI模块有望成为项目中最重要的增长点。未来可能会支持更多的AI服务商，拓展更多AI应用场景，如文本生成、代码辅助、数据分析等。对于Java开发者而言，这意味着可以用更低的成本将AI能力融入日常开发和应用中。