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”。

函数接口

Fastjson is a JSON processor (JSON parser + JSON generator) written in Java

API for Jakarta Servlet, enabling web applications to handle HTTP requests and responses through a standard interface ...

JavaBeans Validation (Bean Validation) is a validation model that can add constraints to the beans with annotations ...

Lombok is a Java library that provides annotations to simplify Java development by automating the generation of ...