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”。

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

Guava is a suite of core and expanded libraries that include

The Apache Commons IO library contains utility classes, stream implementations, file filters,

Apache Commons Lang, a package of Java utility classes for the classes that are in java.lang's hierarchy, or are ...

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

Spring Context provides access to configured objects like a registry (a context). It inherits its features from Spring ...