package com.ruoyi.common.utils;

public class DataFormatUtils {
    /**
     * 字符串转化成为16进制字符串
     * @param s
     * @return
     */
    public static String strTo16(String s) {
        String str = "";
        for (int i = 0; i < s.length(); i++) {
            int ch = (int) s.charAt(i);
            String s4 = Integer.toHexString(ch);
            str = str + s4;
        }
        return str;
    }
    public static String padLeft(String str,int len){
        String pad="0000000000000000";

        return len>str.length()&&len<=16&&len>=0?pad.substring(0,len-str.length())+str:str;
    }

    public static String intToHex(int n) {
        StringBuffer s = new StringBuffer();
        String a;
        char []b = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
        while(n != 0){
            s = s.append(b[n%16]);
            n = n/16;
        }
        a = s.reverse().toString();
        return a;
    }
}