Hutool 3.9 __hot__ Jun 2026

: The core library operates completely independent of third-party frameworks, keeping your deployment footprint minimal.

As an early version, Hutool 3.9 preceded the major updates found in the current

While the toolkit has grown, the core design principles and many of the APIs introduced in the 3.x series remain the foundation for its more advanced features today. Hutool 3.9

// With Hutool 3.9 String value = ObjectUtil.defaultIfNull(object.getString(), "default");

Covers data conversion, file management, encryption, web operations, and more. Core Modules and Features in Hutool 3.9 : The core library operates completely independent of

The most common usage involves passing a URL and a map of parameters: HashMap paramMap = HashMap<>(); paramMap.put( // Returns the response body as a String String result = HttpUtil.post( "https://example.com" , paramMap); Use code with caution. Copied to clipboard Advanced POST (Chain Building) If you need to customize headers or timeouts, use the HttpRequest String result = HttpRequest.post( "https://example.com" ) .header(Header.USER_AGENT, "Hutool http" // Add custom headers .form(paramMap) // Add form parameters // Set timeout in milliseconds .execute() .body(); // Get the response body Use code with caution. Copied to clipboard POST JSON Data To send a raw JSON body instead of form parameters, use the method with a JSON string: String json = "\"name\": \"hutool\"" ; String result = HttpRequest.post( "https://example.com" ) .body(json) .execute() .body(); Use code with caution. Copied to clipboard or specific response headers with Hutool?

In Hutool 3.9, the simplest way to perform a request is by using the HttpUtil.post Core Modules and Features in Hutool 3

Offers robust string manipulation, including blank checks, sub-string, and format methods similar to Apache Commons Lang.

Stream handling, resource loading, and simplified file readers/writers. hutool-crypto

Hutool is an open-source Java library that was first released in 2016. Since then, it has been continuously updated and expanded to become one of the most popular Java libraries in China. Hutool is designed to provide a set of reusable utilities and tools that can be used to simplify Java development, making it easier for developers to focus on business logic rather than tedious coding tasks.

HttpUtil.get("https://example.com") or HttpUtil.post(url, map) . Why Choose Hutool 3.9?