MD5加密组件的用法

<dependency>
    <groupId>commons-codec</groupId>
    <artifactId>commons-codec</artifactId>
    <version>1.14</version>
</dependency>

public class MD5Utils {
    public static String md5Digest(String source , Integer salt){
        char[] ca = source.toCharArray();
        //混淆源数据
        for(int i = 0 ; i < ca.length ; i++){
            ca[i] = (char) (ca[i] + salt);
        }
        String target = new String(ca);
        String md5 = DigestUtils.md5Hex(target);
        return md5;
    }
}