java处理Hex编码解码

public class HexUtils {

    public static void main(String[] args)  throws Exception{


        String mmm = "安全帽检测NEW";
        String eeew = "192.168.1.13-0";
        String bbbb = "895B68513D5EC0684B6D4E0045005700";
        String ccccc = "3100390032002E003100360038002E0031002E00310033002D003000";
        String chatset = "UTF-16LE";//UTF-8//GBK//Unicode//UTF-16LE

        //编码
        String aaa = string2HexUTF16LE(mmm);
        System.out.println(aaa);

        //解码
        String wqqqq = hexUTF16LE2String(bbbb);
        System.out.println(wqqqq);

    }



    /**
     * @Title:bytes2HexString
     * @Description:字节数组转16进制字符串
     * @param b
     * 字节数组
     * @return 16进制字符串
     * @throws
     */
    public static String bytes2HexString(byte[] b) {
        StringBuffer result = new StringBuffer();
        for (int i = 0; i < b.length; i++) {
            result.append(String.format("%02X",b[i]));
        }
        return result.toString();
    }

    /**
     * @Title:hexString2Bytes
     * @Description:16进制字符串转字节数组
     * @param src
     * 16进制字符串
     * @return 字节数组
     * @throws
     */
    public static byte[] hexString2Bytes(String src) {
        int l = src.length() / 2;
        byte[] ret = new byte[l];
       for (int i = 0; i < l; i++) {
            ret[i] = Integer.valueOf(src.substring(i * 2, i * 2 + 2), 16).byteValue();
        }
        return ret;
    }


    /**
     * @Title:string2HexUTF8
     * @Description:字符UTF8串转16进制字符串
     * @param strPart
     * 字符串
     * @return 16进制字符串
     * @throws
     */
    public static String string2HexUTF8(String strPart) {

        return string2HexString(strPart,"UTF-8");
    }

    /**
     * @Title:string2HexUTF8
     * @Description:字符UTF-16LE串转16进制字符串,此UTF-16LE等同于C#中的Unicode
     * @param strPart
     * 字符串
     * @return 16进制字符串
     * @throws
     */
    public static String string2HexUTF16LE(String strPart) {

        return string2HexString(strPart,"UTF-16LE");
    }

    /**
     * @Title:string2HexUnicode
     * @Description:字符Unicode串转16进制字符串
     * @param strPart
     * 字符串
     * @return 16进制字符串
     * @throws
     */
    public static String string2HexUnicode(String strPart) {

        return string2HexString(strPart,"Unicode");
    }
    /**
     * @Title:string2HexGBK
     * @Description:字符GBK串转16进制字符串
     * @param strPart
     * 字符串
     * @return 16进制字符串
     * @throws
     */
    public static String string2HexGBK(String strPart) {

        return string2HexString(strPart,"GBK");
    }

    /**
     * @Title:string2HexString
     * @Description:字符串转16进制字符串
     * @param strPart 字符串
     * @param tochartype hex目标编码
     * @return 16进制字符串
     * @throws
     */
    public static String string2HexString(String strPart,String tochartype) {
        try{
            return bytes2HexString(strPart.getBytes(tochartype));
        }catch (Exception e){
            return "";
        }
    }

    ///////////////////////////////////////////////////
    /////////////////////////////////////////////////

    /**
     * @Title:hexUTF82String
     * @Description:16进制UTF-8字符串转字符串
     * @param src
     * 16进制字符串
     * @return 字节数组
     * @throws
     */
    public static String hexUTF82String(String src) {

        return hexString2String(src,"UTF-8","UTF-8");
    }

    /**
     * @Title:hexUTF16LE2String
     * @Description:16进制UTF-8字符串转字符串，,此UTF-16LE等同于C#中的Unicode
     * @param src
     * 16进制字符串
     * @return 字节数组
     * @throws
     */
    public static String hexUTF16LE2String(String src) {

        return hexString2String(src,"UTF-16LE","UTF-8");
    }

    /**
     * @Title:hexGBK2String
     * @Description:16进制GBK字符串转字符串
     * @param src
     * 16进制字符串
     * @return 字节数组
     * @throws
     */
    public static String hexGBK2String(String src) {

        return hexString2String(src,"GBK","UTF-8");
    }

    /**
     * @Title:hexUnicode2String
     * @Description:16进制Unicode字符串转字符串
     * @param src
     * 16进制字符串
     * @return 字节数组
     * @throws
     */
    public static String hexUnicode2String(String src) {
        return hexString2String(src,"Unicode","UTF-8");
    }

    /**
     * @Title:hexString2String
     * @Description:16进制字符串转字符串
     * @param src
     * 16进制字符串
     * @return 字节数组
     * @throws
     */
    public static String hexString2String(String src,String oldchartype, String chartype) {
        byte[] bts=hexString2Bytes(src);
        try{if(oldchartype.equals(chartype))
            return new String(bts,oldchartype);
        else
            return new String(new String(bts,oldchartype).getBytes(),chartype);
        }
        catch (Exception e){

            return"";
        }
    }


}

来源：https://blog.csdn.net/caodongfang126/article/details/99676571