Java uses Apache commons codec for MD5 encryption, base64 encryption and decryption, and executes system commands

Before writing the code, let's introduce the two packages we need to use;

commons-codec-1.10. The tool class package used to handle common coding methods in the jar commons project, such as DES, SHA1, MD5, Base64, URL, soundx, and so on.

commons-exec-1.3. Jar Apache commons exec is a java project on Apache. It provides some common methods to execute external processes

You can download the Apache commons official package directly from this site

These are only the basic functions of the Apache commons package. For other functions, you can download the Chinese word version of the instructions for Apache commons here for detailed study