java 字符串和16进制互转

16进制数据转字符串string

public String hexToString(String hex) {
        String result = hex;
        if (!(hex.indexOf(":") == -1)) {
            String[] temps = hex.split(":");
            byte[] bs = new byte[temps.length];
            try {
                for (int j = 0; j < temps.length; j++) {
                    // 转换byte[]
                    bs[j] = (byte) Integer.parseInt(temps[j], 16);
                }
                // 转换String,这里编码是utf-8,可设置,根据发snmp的编码集来
                // result = new String(bs, "utf-8");
                result = new String(bs, "gb2312");
            } catch (Exception e) {
                // 一些字符不能转16进制，返回原内容
                return result;
            }
        }
        return result;
    }

字符串string转16进制数据

public static String str2HexStr(String str) {
        char[] chars = "0123456789ABCDEF".toCharArray();
        StringBuilder sb = new StringBuilder("");
        byte[] bs = str.getBytes();
        int bit;
        for (int i = 0; i < bs.length; i++) {
            bit = (bs[i] & 0x0f0) >> 4;
            sb.append(chars[bit]);
            bit = bs[i] & 0x0f;
            sb.append(chars[bit]);
        }
        return sb.toString().trim();
    }