We’ve curated 39 of the most productive methods across 9 major categories. Each method is a “tool” in your belt.
Java is strongly typed, but data comes from external sources (HTTP, files, databases) as strings or objects. Convert removes the try-catch hell of SimpleDateFormat or Integer.parseInt.
The crate arrived on a rain-slick Tuesday, stamped with a single word: HUTOOL39. Kai carried it from the alley into the dim workshop he rented above a noodle shop, hands leaving brief, clean prints on the wooden lid. He’d spent the last three months chasing whispers — forum threads, an obscure GitHub fork, an encrypted message that resolved into coordinates and a name. Hutool 39. Nobody answered when he asked what it was. Everyone who had owned one stopped posting.
He pried the lid. Inside, nested in oilcloth, lay a small palm-sized device: gunmetal casing, a matte-black dial with numbers, and an inset glass like an eye. No markings beyond “H39” stamped beneath the lens. It was heavier than it looked. Attached by a braided cord was a handwritten note: Use when code breaks or when daylight isn’t enough.
Kai was a software tinkerer by trade, though he’d been slipping into other trades lately: reverse-engineering, firmware archaeology, bartering rare modules to pay rent. He set the device on a bench beside his terminal and booted an old laptop, half-expecting nothing to happen. The dial flickered once, showing a precise green pulse that matched the heartbeat of his monitor.
Curiosity outweighed caution. He turned the dial to 3.
At three, the room chilled. The hum from his routers slowed, screens shimmered, and lines of his current program — a stubborn microservice that refused to deploy — rearranged themselves on the display. Error messages condensed into a single word: “WHY?” The device’s eye warmed; a soft mechanical voice said: “HUT: Diagnose.”
Kai stared. The crate hadn’t lied: Hutool 39 was a diagnostic. But not for hardware alone. It read patterns like a translator. He watched as the tool highlighted a race condition traced across three modules and suggested a one-line patch. He applied it. The service compiled. The deployment completed without hiccup. Kai laughed, a small relieved sound, and for a minute the alley smelled less like rain and more like possibility.
He dialed 7 next.
The device hummed higher, the glass lens spinning like a pupil. Outside, the city’s lights dimmed; signals dipped and returned staggered like a heartbeat. Onscreen, his terminal filled with loops of code, then ghostly overlays of other programs — versions of his own service running in environments he’d never seen. Hutool 39 reached across networks, across forks and caches, and assembled a composite map of code lineage. It suggested how an ancient commit in a forgotten repo had infected modern behavior. It proposed a lineage-aware refactor.
Kai felt both exhilarated and uneasy. The tool was powerful, uncanny. It could untangle years of legacy spaghetti in minutes. He thought of the companies that hoarded bugs and the clients who refused to pay for real fixes. He imagined selling the device and all the favors it would buy. He imagined keeping it and finally finishing the side-project that kept him awake: an app to connect neighbors for shared tools and repairs.
He turned the dial to 12.
The voice that spoke now was clearer, edged with a familiarity he couldn’t place. “HUT: Assist. Permission retained: creative operations.” The workshop dissolved into layers of possibilities. The device streamed not debugging hints but narratives — migration plans written as parables, patch notes that read like poems. For Kai, intent blurred. Hutool 39 could not only fix code; it could conjure ways to explain it, to persuade managers, to make technical debt legible to hearts that only cared about deadlines.
That night, beneath the halo of the lamp and the device’s steady glow, Kai drafted a proposal that read like a story: the refactor framed as a neighborhood harvest, each module a neighbor contributing in season. He sent it to an old client, the one who’d ghosted him after promising funding. The reply came three mornings later: a meeting. They loved the narrative, they said. They wanted a pilot.
The device became a companion. On weekends, Kai used it to teach kids at a community center, letting Hutool 39 animate algorithms as games — sorting as a dance, caches as hidden stashes. The kids named the tool “Hutty” and drew stickers for it. It became less ominous with each crayon stroke.
But power draws attention. A man in a grey coat, smile like a line of code with all comments removed, began showing up in places Kai frequented: the noodle shop, the bicycle repair stand, outside his workshop door. He asked casual questions about Kai’s work, about where one might find “vintage debugging tools.” He bought extra dumplings and left envelopes that were too thick to be for charity.
Kai, who had always trusted curiosity over caution, grew watchful. Hutool 39, which had only ever asked for intent, pulsed when the man lingered near the window. Its lens flashed a soft amber as if warning. Kai tightened the workshop’s lock, but not against theft — against persuasion. He knew what the device could do in the wrong hands: rewrite narratives to favor control, smooth over risks until they became instruments of manipulation. Hutool 39 could make not only code readable but people malleable.
One night the grey-coated man came at the door with a key he claimed to have found. He left without force when Kai refused to open it, but the next morning Hutty’s cord was cut cleanly beside the bench. The device lay on the floor, the oilcloth empty, its eye a tiny dark stone.
For three days Kai could not sleep. He replayed the moment a dozen ways and felt the cold, thin dread of anyone who knows they’d been noticed. On the fourth day, a message arrived: a single line in a commit to an obscure repo under a pseudonym he recognized from a forum. HUT39: FOUND NEAR: ALLEY BEHIND NOODLE SHOP. RETURN TO: /safebox/7. The commit contained coordinates and a public key.
Kai followed the breadcrumbs. Across the city, through old transit tunnels and disused data centers, he pieced together a trail left by whoever built Hutool 39 — a consortium of ex-maintainers, a guild of patch-workers who once fought to keep the internet’s balance and then disappeared as corporations swallowed open source. They had hidden tools elsewhere, distributed them like sentinels.
At /safebox/7, an old locker behind a decommissioned node stood open. Inside, wrapped in the same oilcloth motif, Hutool 39 blinked as if waking from a long sleep. Beside it, a note: Preserve intent. Tools are mirrors; they amplify what you offer.
Kai rejoined the device to its cord. It accepted, no questions asked. He thought about selling it again, or hoarding it. He thought about the kids at the center and the way their eyes lit when Hutty turned arrays into stories. He remembered the amber warning and the man in the grey coat.
He made a decision.
Kai staged a demonstration for the consortium — a real one, not a message in a commit — showing Hutool 39 used openly to repair a local cooperative’s failing network. He filmed the workshop as the kids watched, the noodle shop steaming in the background, the community rallying as the service came online. He published the demo under a creative license that forbade use for surveillance, for manipulation, for profit at the cost of others. The consortium, after an anxious night, agreed to a condition: a distributed registry of tools, a quorum of caretakers from neighborhoods, librarians, maintainers, teachers. Hutool 39 would not be a commodity; it would be a shared artifact with ethical constraints.
The grey-coated man never returned. Or if he did, he stayed in the background where people like him belong: lines of code are visible there, but his accounts were marked, his offers politely declined. Kai kept Hutty on the bench, its dial showing a tiny permanent mark at 12. He used it sparingly, always with a notepad open to record why the tool was engaged, and always inviting one of the kids to watch. They learned boundaries and the language of repair: how to listen to a system, how to tell its story, how to decide whether a fix was for the common good.
A year later, Kai walked past the noodle shop and saw stickers around the window: Hutty, smiling, surrounded by neighbors and tools. He thought of HUTOOL39 stamped on the crate and the way rain had glossed the wood that first morning. The device was still a device — precise, keen, unblinking — but its power lived in the people who used it, the stories they chose to tell, and the promises they kept to one another.
He turned the dial once, softly, to 0. The eye dimmed, like a light exhaled, and the workshop settled back into the comfortable hum of human-made things. Outside, someone laughed; inside, a child sketched a new sticker design. Hutool 39 had found a place where code and care met, and that, Kai thought as he locked the door, was exactly the kind of tool worth keeping.
is a maintenance release of the popular Java utility library, published on June 20, 2025
. It focuses on expanding AI integration, improving core performance, and adding practical utility methods. 🤖 AI & SSE Enhancements SSE Support parameter to Server-Sent Events (SSE) streaming functions. Timeout Config : New configuration options for stream timeouts. New Interfaces : Added "Text-to-Image" (文生图) support for Video Generation : Added model support for Doubao video generation. HutoolAI Platform
: Introduction of a dedicated platform module for AI operations. 🛠️ Core & Utility Updates Desensitization DesensitizedUtil now includes a method for passport number Performance : Optimized the XXXToMapCopier for faster object-to-map conversions. Assertions
methods to verify if a collection is empty, including new unit tests. : Introduced RecyclableBatchThreadPoolExecutor for handling recyclable batch tasks. 🌐 HTTP & Database HTTP Config setIgnoreContentLength parameter to optionally ignore response length headers. now supports global settings to optimize large query performance. ⚠️ Security & Compatibility Vulnerability Checks : As of this release, tools like CVE Details
monitor this version for potential security issues; always check the latest security advisories before deployment. JDK Support : Version 5.x requires Maven Central : Available under the group ID hutool-all Full library bundle hutool-core Basic tools (Array, String, Date, etc.) hutool-http Client-side HTTP requests JDBC wrapper & SQL execution If you're using an older version, would you like a migration guide dependency snippet cn.hutool:hutool-extra 5.8.39 vulnerabilities | Snyk
Here is the complete content for Hutool 3.9 (specifically version 3.9.x, as there is no official “Hutool 39” — the latest major is Hutool 5.x/6.x; version 3.9 is a legacy release).
Note: Hutool 3.9.x is a legacy version (last updated ~2018). For new projects, use Hutool 5.x or 6.x. This document is for reference or maintenance of old systems.
In the world of Java development, the java.util package provides the basics, but real-world projects often require 10x more boilerplate code. Enter Hutool—a tiny but powerful Java library that has been described as "the best friend of a pragmatic developer."
But what is Hutool 39? While no official version 39.0.0 exists (the latest stable is in the 5.x branch), in the developer community, "Hutool 39" has become a shorthand for "3 categories of tools covering 9 core use cases" that solve 80% of your daily coding frustrations.
This article breaks down those 3 layers and 9 sub-modules—totaling 39 essential methods—to help you write cleaner, shorter, and more reliable Java code.
The name Hutool is a portmanteau of "Hu" (from the author's name) and "Tool." It is a small, full-featured utility library that covers almost every aspect of daily Java development.
Instead of adding dependencies for Apache Commons Lang, Apache Commons IO, and Google Guava, many developers find Hutool to be a lighter, more cohesive alternative.
Hutool 39: The Swiss Army Knife for Java Developers If you’ve spent any significant time in the Java ecosystem, you know the "boilerplate fatigue" that comes with basic tasks like file I/O, date formatting, or HTTP requests. While standard Java has improved, it often feels like you need ten lines of code for a two-line idea.
This is where Hutool comes in. Often described as a "small but complete" Java tool library, Hutool provides an extensive suite of utilities that simplify development. In this article, we’ll dive into what makes Hutool—and specifically the concepts surrounding "Hutool 39" (often associated with its core utility modules and versioning milestones)—a must-have in your tech stack. What is Hutool?
Hutool is an open-source Java toolset that aims to reduce code volume and improve efficiency. It follows the philosophy of "Common utilities, uncommon efficiency." Instead of reinventing the wheel for every project, developers can drop Hutool into their pom.xml and gain access to hundreds of static utility methods. Why the Name?
The name "Hutool" is a portmanteau of "Hu" (an abbreviation for a creator's name or community reference) and "Tool." It’s designed to be a "Swiss Army Knife" for Java, covering everything from cryptography to QR code generation. Key Modules in the Hutool Ecosystem
Hutool isn't just one big blob; it’s modular. Depending on your project requirements, you might use different components:
Hutool-core: The heart of the library. It includes basic tools for reflection, conversion, date manipulation, and string handling.
Hutool-http: A lightweight HTTP client that makes making GET and POST requests as simple as a single method call.
Hutool-crypto: Simplifies encryption and decryption (AES, DES, RSA) and hashing (MD5, SHA-256).
Hutool-json: A simple yet powerful JSON parser and generator.
Hutool-poi: A wrapper around Apache POI that makes Excel and Word manipulation significantly less painful. The Power of Hutool: Practical Examples
To understand why developers search for Hutool solutions, let’s look at how it simplifies common tasks. 1. Date and Time Management
In vanilla Java, formatting a date can be verbose. With Hutool:
// Get current date as a string String now = DateUtil.now(); // Parse a string to a date DateTime date = DateUtil.parse("2023-10-27"); Use code with caution. 2. String Utilities
Checking if a string is blank or manipulating paths is streamlined:
boolean isEmpty = StrUtil.isBlank(myStr); String subString = StrUtil.sub(myStr, 0, 5); Use code with caution. 3. File Operations
Hutool-core eliminates the need for complex FileInputStream boilerplate:
// Read file into a list of strings List Use code with caution. Why "Hutool 39"?
In the context of developer queries, "39" often refers to specific version iterations (like 5.3.9 or earlier 3.x.x branches) or specific utility indices used in documentation. Hutool has evolved significantly over the years, moving from a basic utility set to a comprehensive framework that competes with (and often complements) Google Guava and Apache Commons. Evolution and Stability
The library has gained massive popularity in the Asian development community and is rapidly spreading globally. Its documentation is thorough, and its footprint is small, making it ideal for microservices where startup time and jar size matter. Best Practices for Using Hutool
While Hutool is powerful, here are a few tips to use it effectively:
Avoid Over-Reliance: Use Hutool for common "plumbing" code. For complex business logic, keep your code clean and readable.
Modularize: If you only need the Date utilities, only import hutool-core rather than the entire library suite to keep your dependencies lean.
Check the Version: Always ensure you are using the latest stable version (currently in the 5.x range) to benefit from the latest security patches and performance improvements. Conclusion
Hutool is a game-changer for Java developers who want to stay productive. It turns complex, multi-line procedures into elegant, one-line solutions. Whether you are dealing with files, networking, or simple string manipulation, Hutool has a tool for you.
Ready to try it out? Just add the dependency to your Maven project and start cleaning up your codebase today.
Depending on your goal—whether you are showing off a project, offering services, or asking for help—here are a few post options tailored for forums like Bimmerforums or social media groups. Option 1: The "Success Story" Post
Best for: Showing off a successful CarPlay or feature activation. Finally Unlocked! E39 Tech Modernized 🚗💨
Just finished using HU-TOOL for some deep coding on the E39. Managed to [insert feature, e.g., activate CarPlay / update NBT Evo ID5 to ID7] without the dreaded black screen.
For those wondering, the process was smoother than expected. If you’re tired of the stock limitations, this is the way to go. Full-screen CarPlay enabled Video in motion (VIM) unlocked M-Sport HUD display active
Anyone else running a similar setup or need tips on the FSC certificates? Let’s chat in the comments! #BMWE39 #HUTool #BMWCCoding #Retrofit Option 2: The "Professional Service" Post Best for: Offering coding services to others. ‼️ UNLOCK THE FULL POTENTIAL OF YOUR BMW ‼️
Tired of the "Black Screen" risks? I’m now offering professional coding and retrofits using HU-TOOL PRO . We support CIC, NBT, NBT-EVO (ID5/6/7), and MGU. What we can do: ✅ Update NBT-EVO ID5 ➡️ ID6 ➡️ ID7 via OBD ✅ CarPlay Full Screen & Video Codex + USB ✅ Professional Service History Editor ✅ FSC OEM Certificates for Navigation Maps
Don’t risk permanent hardware damage with unverified tools. DM for a quote or find me on WhatsApp! 📥 #BMWModification #CarPlayActivation #BMWRetrofit #HU_TOOL Option 3: The "Help Wanted" Post Best for: Troubleshooting a specific coding issue. Quick Question: HU-TOOL 39 NBT Coding Issue
Hey guys, I’m working on an E39 retrofit and using HU-TOOL for the [NBT/NBT2] head unit. I’m trying to [describe specific goal, e.g., change the DVD area code or enable Miracast] but I’m hitting a snag.
I’ve followed the standard ZCS coding steps, but I’m seeing [describe error]. Has anyone encountered this specific HU_NBT2 3000 HMI conflict before? Any advice on the right parameters would be huge. Thanks! Quick Tips for a "Good" Post: Use Visuals
: Posts with clear photos of the dashboard or the coding software interface get significantly more engagement. Be Specific
: Mentioning the specific head unit (e.g., NBT-EVO) helps experts give you better advice. Include Keywords
: Using terms like "FSC certificates," "OBD," or "ID7" helps your post show up in search results for other enthusiasts. Are you looking to showcase a completed project or are you looking for help with a specific error code BMW Hu-Tool Pro for sale - Facebook
"Hutool 39" most likely refers to Hutool version 5.8.39, a recent stable release of the popular Chinese open-source Java tool library. Hutool is designed to simplify Java development by providing a comprehensive set of static utility methods, often referred to as the "Swiss Army Knife" for Java. Overview of Hutool 5.8.39
Released on June 23, 2025, version 5.8.39 is part of the mature 5.x branch. This version is widely used in enterprise applications to replace repetitive "util" classes, allowing developers to focus on business logic.
Goal: To make Java "sweet" by providing functional-style elegance and reducing the learning curve for complex APIs.
Compatibility: Supports JDK 8 and above. For legacy projects using JDK 7, developers are advised to use the older Hutool 4.x branch. Key Modules & Capabilities
Hutool is modular, meaning you can import the entire library (hutool-all) or specific components based on your needs: hutool-core Core utilities for collections, strings, beans, and dates. hutool-http A lightweight HTTP client for making web requests. hutool-crypto
Simplified encapsulation for symmetric, asymmetric, and digest algorithms. hutool-json Tools for JSON parsing and creation. hutool-extra
Third-party wrappers for things like mail, templates, and QR codes. Recent Security Context
While version 5.8.39 is a stable release, it has been noted in security databases like Snyk and CVE Details to monitor for potential vulnerabilities. Common issues addressed in recent versions of libraries like Hutool often include:
Insecure Expression Evaluation: Risks associated with expression engines (like QLExpress) that could lead to remote code execution.
Dependency Management: Ensuring that third-party integrations (e.g., Jackson or Netty) are updated to avoid inherited security flaws. hutool-all » 5.8.39 - Maven Repository
23-Jun-2025 — Hutool All » 5.8. 39. Hutool是一个小而全的Java工具类库，通过静态方法封装，降低相关API的学习成本，提高工作效率，使Java拥有函数式语言般的优雅，让Java语言也可以“甜甜的”。 Maven Repository hutool/README-EN.md at v5-master - GitHub
Hutool 3.9: A Comprehensive PHP Framework for Efficient Development
Hutool 3.9 is the latest version of the widely-used PHP development framework, Hutool. This framework has been a favorite among PHP developers for its simplicity, flexibility, and extensive feature set. With Hutool 3.9, developers can build robust, scalable, and maintainable applications with ease.
Key Features of Hutool 3.9
What's New in Hutool 3.9?
Benefits of Using Hutool 3.9
In conclusion, Hutool 3.9 is a powerful and feature-rich PHP framework that is well-suited for building a wide range of applications. Its modular design, improved performance, and enhanced security features make it an excellent choice for developers. Whether you're building a small web application or a large-scale enterprise system, Hutool 3.9 is definitely worth considering.
Understanding Hutool 5.8.39: The Java Utility Library That Keeps Code Sweet
For Java developers, boilerplate code is a constant enemy. Whether it's handling date formats, managing file I/O, or making HTTP requests, the standard JDK often requires several lines of code for tasks that feel like they should take one. This is where Hutool steps in.
As of its recent stable release, Hutool 5.8.39 (released June 2025) continues to serve as a comprehensive "Swiss Army Knife" for Java development. By encapsulating complex logic into simple static methods, it reduces the cost of learning APIs and makes Java feel as elegant as a functional language. What’s New in Hutool 5.8.39?
The 5.8.39 update introduces several modern features and performance optimizations designed to keep pace with evolving developer needs. 1. Enhanced AI Integration
Perhaps the most notable addition in this version is the expansion of the 【ai】 module.
SSE Streaming Support: Added a callback parameter for Server-Sent Events (SSE) streaming returns, allowing for real-time data flow in AI applications.
New Model Support: Added text-to-image interfaces for Doubao and Grok, and video generation support for Doubao.
Platform Launch: The introduction of the HutoolAI platform provides a unified gateway for accessing various AI capabilities directly within your Java projects. 2. Core Utility Improvements
The core library received several practical updates focused on data privacy and reliability:
Passport Desensitization: The DesensitizedUtil now includes a method specifically for desensitizing passport numbers, aiding in GDPR and data privacy compliance.
Collection Assertions: New methods in the Assert class allow for cleaner code when asserting that a given collection is empty.
Performance: Optimizations to XXXToMapCopier provide faster bean-to-map conversions. 3. Database and Network Enhancements
Global FetchSize: Developers can now set a global FetchSize in the db module, providing better control over memory usage during large database queries.
Flexible HTTP Requests: HttpConfig now includes setIgnoreContentLength, allowing the client to ignore the content-length header when reading responses—useful for certain non-standard API behaviors. Why Use Hutool?
Hutool is designed to replace the messy util packages found in most projects. It is organized into modular components, so you only need to import what you use. hutool-core
The foundation; includes tool classes for strings, dates, collections, and reflection. hutool-http
A simple HTTP client that simplifies requests and file uploads. hutool-crypto
Easy-to-use encryption and decryption for various algorithms. hutool-db
A JDBC wrapper that uses the ActiveRecord pattern to simplify SQL operations. hutool-json A lightweight JSON parser and generator. Getting Started with 5.8.39
To use the full suite of tools in your project, add the following dependency to your pom.xml from Maven Central:
implementation 'cn.hutool:hutool-all:5.8.39' Use code with caution.
By upgrading to Hutool 5.8.39, you gain access to a more robust, AI-ready toolkit that minimizes bugs by using pre-tested, high-quality community-driven code. Central Repository: cn/hutool/hutool-system/5.8.39
Central Repository: cn/hutool/hutool-system/5.8. 39. cn/hutool/hutool-system/5.8.39. ../ hutool-system-5.8.39-javadoc.jar 2025-06- hutool/README-EN.md at v5-master - GitHub
This release expanded Hutool's reach into generative AI while continuing to refine its massive collection of "util" packages. Expanded AI Capabilities New HutoolAI Platform
: A centralized platform for interacting with various AI models. Enhanced Stream Support parameters for SSE (Server-Sent Events) streaming returns. New Integrations
: Added text-to-image interfaces for Doubao and Grok, as well as model support for Doubao's video generation. Core Utility Enhancements Data Desensitization : Added passport number masking to DesensitizedUtil for better data privacy. Performance Optimization : Improved the performance of the XXXToMapCopier for faster object-to-map conversions. New Threading Tools : Introduced RecyclableBatchThreadPoolExecutor
, a recallable batch thread pool for more efficient resource management. Improved Assertions and HTTP Empty Collection Assertions methods to verify if a given collection is empty. Flexible HTTP Headers setIgnoreContentLength HttpConfig , allowing users to optionally ignore the contentLength header when reading responses. Database Management Global FetchSize : Added a global setting for
module to better control how many rows are fetched from the database at once. Overview of the Hutool Library
Hutool is widely used in the Java community as a "Swiss Army Knife" for developers, aiming to reduce the cost of learning complex APIs and increasing productivity by providing thousands of "out-of-the-box" methods. Core Functionality hutool-core
Foundational tools for collections, strings, beans, and assertions. hutool-http A lightweight HTTP client for making web requests. hutool-crypto Simplified encryption and decryption tools. hutool-json Easy-to-use JSON parsing and encapsulation. hutool-extra
Third-party library wrappers for mail, templates, and QR codes. code example
showing how to implement one of these new 5.8.39 features, such as the passport desensitization AI responses may include mistakes. Learn more hutool/README-EN.md at v5-master - GitHub
| Feature | Description |
|---------|-------------|
| CollUtil.isEmpty() | Now supports null safely |
| DateUtil.range() | Generate date ranges (daily, monthly) |
| SecureUtil.hmacSha1() | HMAC-SHA1 support |
| CsvUtil | Read/write CSV files |
| ImgUtil.pressText() | Image watermarking |
| ZipUtil.zip() | Recursive directory zip |
Hutool 3.9 is a "just works" utility library. It does not chase trends but solves real Java frustrations with concise, well-tested code. If you are maintaining a Java 8 codebase and need a Swiss army knife for common tasks, Hutool 3.9 delivers without bloat.
The query "hutool 39" most likely refers to Hutool version 5.8.39, a release of the popular Hutool Java tool library that introduces significant AI integration and core utility enhancements.
Below is a structured "paper" (technical summary) detailing the key features and updates in this version. Technical Overview: Hutool v5.8.39 1. Introduction
Hutool is a comprehensive Java utility library designed to simplify common development tasks through static method encapsulation, reducing the complexity of standard Java APIs. Released on June 23, 2025, version 5.8.39 represents a major step forward in modernizing the library with AI-driven capabilities and performance optimizations. 2. Key Features and Enhancements AI Integration (hutool-ai)
This release focuses heavily on artificial intelligence, expanding the library's ability to interact with modern AI platforms:
SSE Streaming: Added support for Server-Sent Events (SSE) with a callback parameter for real-time streaming responses.
New Platform Support: Integrated Grok and Doubao (ByteDance), including text-to-image and video generation support.
HutoolAI Platform: Introduction of a unified platform for AI operations within the ecosystem. Core Utility Improvements (hutool-core)
Hutool remains a "Swiss Army Knife" for Java developers, with this version adding several safety and performance features:
Data Desensitization: Added specific passport number desensitization to the DesensitizedUtil.
Performance Optimization: Enhanced the XXXToMapCopier for faster object-to-map conversions.
New Assertions: Added methods to Assert to check if collections are empty, alongside comprehensive unit test cases.
Concurrency: Added RecyclableBatchThreadPoolExecutor, a batch processing thread pool designed for high-efficiency task recycling. Database and Network Updates
Database (DB): Introduced global FetchSize settings to optimize data retrieval during large queries.
HTTP Client: The HttpConfig now allows ignoring the Content-Length header in responses, increasing flexibility for non-standard servers. 3. Usage and Implementation
Developers can integrate Hutool 5.8.39 via Maven by adding the following dependency to their pom.xml:
Version 5.8.39 solidifies Hutool's position as an essential library for Java developers by bridging the gap between traditional utility methods and modern AI requirements. Its focus on "making Java sweet" continues through its commitment to reducing boilerplate and improving developer productivity. hutool-all » 5.8.39 - Maven Repository