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 ...

The Apache Commons Collections package contains types that extend and augment the Java Collections Framework.

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 ...