3.9 Upd — Hutool
Ensure your runtime environment is using JDK 8 or higher. To test compatibility, run your existing application on JDK 11 or 17 with the new 5.x library in a sandbox environment.
The powering your local development environment.
Hutool-http is often preferred over heavier libraries like Apache HttpClient for its simplicity. In 3.9, several refinements were made to the HttpRequest and HttpResponse classes:
: Includes JSON, HTTP client, JDBC, and string manipulation ( StrUtil ). Context for Version 3.9 Hutool 3.9 UPD
It stays out of the way of your business logic, keeping your codebase "sweet" without forcing you into a specific framework. How to Get It
Internal optimizations reduced the overhead when performing massive batch conversions of timestamps. 4. File and IO Improvements
If you are currently implementing or troubleshooting a specific system module, let me know: Ensure your runtime environment is using JDK 8 or higher
If you are still maintaining legacy projects using the 3.x branch, ensure your pom.xml reflects the update:
Hutool is a lightweight, all-inclusive Java tool utility library that wraps fundamental JDK operations into highly intuitive static methods. Derived from a corporate internal library ("Hu" represents the original company name, and "tool" signifies its functional core), the name also serves as a witty homophone for the Chinese word Hútú (糊涂), meaning "hard to be confused" or "happily oblivious".
Provides options to activate or deactivate internal SSH layers during custom scripting and head unit recovery operations. Hutool-http is often preferred over heavier libraries like
: Simplifies text workflows. It features fast templates via {} placeholders, null-safe trimming, and quick camel-case to underscore mutations.
Leverage CollUtil.newConcurrentHashMap for high-concurrency environments. Upgrading Beyond Version 3.x
Improved performance for StrUtil , making basic manipulation faster and less memory-intensive.
如果希望按需引入，可以选择性地导入所需模块，例如只需要HTTP和加密功能，可以分别引入 hutool-http 和 hutool-crypto 模块。