package com.boying.util;
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import java.util.Arrays;
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import java.util.UUID;
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public class StringUtil {
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public static boolean isNullOrEmpty(String str) {
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if (null == str || "".equalsIgnoreCase(str.trim())
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|| "null".equals(str.trim())) {
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return true;
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}
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return false;
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}
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public static byte[] convertNum(String s){
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String[] split = s.split("-");
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byte[] bytes = new byte[split.length];
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for (int i = 0; i < split.length; i++) {
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String s1 = split[i];
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byte b = Byte.parseByte("0x"+s1);
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bytes[i]=b;
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}
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return bytes;
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}
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public static String toStr(String[] strs){
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String s = Arrays.toString(strs);
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String substring = s.substring(1, s.length() - 1);
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String s1 = substring.replaceAll(",", "");
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String s2 = s1.replaceAll(" ", "");
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return s2;
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}
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public static String getUUID() {
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return UUID.randomUUID().toString().replaceAll("-", "");
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}
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/**
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* 将指定byte数组以16进制的形式打印到控制台
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*
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* @param hint String
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* @param b byte[]
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* @return void
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*/
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public static void printHexString(String hint, byte[] b) {
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System.out.print(hint);
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for (int i = 0; i < b.length; i++) {
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String hex = Integer.toHexString(b[i] & 0xFF);
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if (hex.length() == 1) {
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hex = '0' + hex;
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}
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System.out.print(hex.toUpperCase() + " ");
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}
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}
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/**
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* @param b byte[]
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* @return String
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*/
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public static String Bytes2HexString(byte[] b) {
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String ret = "";
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for (int i = 0; i < b.length; i++) {
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String hex = Integer.toHexString(b[i] & 0xFF);
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if (hex.length() == 1) {
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hex = '0' + hex;
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}
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ret += " 0x" + hex.toUpperCase();
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}
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return ret;
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}
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/**
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* 将指定字符串src，以每两个字符分割转换为16进制形式 如："2B44EFD9" –> byte[]{0x2B, 0×44, 0xEF,
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* 0xD9}
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*
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* @param src String
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* @return byte[]
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*/
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public static byte[] HexString2Bytes(String src) {
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if (null == src || 0 == src.length()) {
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return null;
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}
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String s1 = src.replaceAll("-", "");
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byte[] ret = new byte[s1.length() / 2];
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byte[] tmp = s1.getBytes();
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for (int i = 0; i < (tmp.length / 2); i++) {
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ret[i] = uniteBytes(tmp[i * 2], tmp[i * 2 + 1]);
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}
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return ret;
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}
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/**
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* 将两个ASCII字符合成一个字节； 如："EF"–> 0xEF
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*
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* @param src0 byte
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* @param src1 byte
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* @return byte
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*/
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public static byte uniteBytes(byte src0, byte src1) {
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byte _b0 = Byte.decode("0x" + new String(new byte[]{src0})).byteValue();
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_b0 = (byte) (_b0 << 4);
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byte _b1 = Byte.decode("0x" + new String(new byte[]{src1})).byteValue();
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byte ret = (byte) (_b0 ^ _b1);
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return ret;
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}
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public static void main(String[] args) {
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String s = "00-64-FF-FF-6E-78-00-04-00-01-01-02-00-FF-00-00-00-09-E4-BA-AC-41-38-38-38-38-38-0D-01-01-01-02-00-FF-00-00-00-09-E4-B8-B4-E6-97-B6-E8-BD-A6-0D-02-01-01-02-00-FF-00-00-00-0C-E6-AC-A2-E8-BF-8E-E5-85-89-E4-B8-B4-0D-03-01-01-02-00-FF-00-00-00-09-E4-BD-99-E4-BD-8D-3A-37-34-00-0A-20-E4-B8-B4-E6-97-B6-E8-BD-A6-2C-E4-BA-AC-41-38-38-38-38-38-2C-E6-AC-A2-E8-BF-8E-E5-85-89-E4-B8-B4-00-6B-E7";
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String s1 = s.replaceAll("-", "");
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byte[] bytes = HexString2Bytes(s1);
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for (byte aByte : bytes) {
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System.out.print(aByte + " ");
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}
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}
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}
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