Two useful gadgets

two utility classes

1. MD5 Encryption Widget

public class EncryptUtils {
    
    

    public static String md5(String state){
    
    
        return DigestUtils.md5Hex(state);
    }


}

2. Generate a four-digit random verification code

public class VerifyCodeUtils {
    
    
    public static String getRandomVerifyCode(){
    
    
        return String.format("%04d", System.currentTimeMillis() % 10000L);
    }


}