import java.io.ByteArrayOutputStream;/*** Created by Administrator on 2016/2/2.* -----------16進制和字符串互轉---------* ------------解決中文亂碼問題---------*/public class StringToSixthUtils {private static String hexString = "0123456789abcdef";/** 將字符串編碼成16進制數字,適用于所有字符（包括中文）*/public static String encode(String str) {//根據默認編碼獲取字節數組byte[] bytes = str.getBytes();StringBuilder sb = new StringBuilder(bytes.length * 2);//將字節數組中每個字節拆解成2位16進制整數for (int i = 0; i < bytes.length; i++) {sb.append(hexString.charAt((bytes[i] & 0xf0) >> 4));sb.append(hexString.charAt((bytes[i] & 0x0f)));}return sb.toString();}/** 將16進制數字解碼成字符串,適用于所有字符（包括中文）*/public static String decode(String bytes) {ByteArrayOutputStream baos = new ByteArrayOutputStream(bytes.length() / 2);//將每2位16進制整數組裝成一個字節for (int i = 0; i < bytes.length(); i += 2)baos.write((hexString.indexOf(bytes.charAt(i)) << 4 | hexString.indexOf(bytes.charAt(i + 1))));return new String(baos.toByteArray());}}

package com.wpn.net.util; public class NumberChange { /* * 把16進制字符串轉換成字節數組 @param hex @return */ public static byte[] hexStringToByte(String hex) { int len = (hex.length() / 2); byte[] result = new byte[len]; char[] achar = hex.toCharArray(); for (int i = 0; i < len; i++) { int pos = i * 2; result[i] = (byte) (toByte(achar[pos]) << 4 | toByte(achar[pos + 1])); } return result; } private static byte toByte(char c) { byte b = (byte) "0123456789ABCDEF".indexOf(c); return b; } /** * 把字節數組轉換成16進制字符串 * * @param bArray * @return */ public static final String bytesToHexString(byte[] bArray) { StringBuffer sb = new StringBuffer(bArray.length); String sTemp; for (int i = 0; i < bArray.length; i++) { sTemp = Integer.toHexString(0xFF & bArray[i]); if (sTemp.length() < 2) sb.append(0); sb.append(sTemp.toUpperCase()); } return sb.toString(); } /** * @函數功能: BCD碼轉為10進制串(阿拉伯數據) * @輸入參數: BCD碼 * @輸出結果: 10進制串 */ public static String bcd2Str(byte[] bytes) { StringBuffer temp = new StringBuffer(bytes.length * 2); for (int i = 0; i < bytes.length; i++) { temp.append((byte) ((bytes[i] & 0xf0) >>> 4)); temp.append((byte) (bytes[i] & 0x0f)); } return temp.toString().substring(0, 1).equalsIgnoreCase("0") ? temp.toString().substring(1) : temp.toString(); } /** * @函數功能: 10進制串轉為BCD碼 * @輸入參數: 10進制串 * @輸出結果: BCD碼 */ public static byte[] str2Bcd(String asc) { int len = asc.length(); int mod = len % 2; if (mod != 0) { asc = "0" + asc; len = asc.length(); } byte abt[] = new byte[len]; if (len >= 2) { len = len / 2; } byte bbt[] = new byte[len]; abt = asc.getBytes(); int j, k; for (int p = 0; p < asc.length() / 2; p++) { if ((abt[2 * p] >= '0') && (abt[2 * p] <= '9')) { j = abt[2 * p] - '0'; } else if ((abt[2 * p] >= 'a') && (abt[2 * p] <= 'z')) { j = abt[2 * p] - 'a' + 0x0a; } else { j = abt[2 * p] - 'A' + 0x0a; } if ((abt[2 * p + 1] >= '0') && (abt[2 * p + 1] <= '9')) { k = abt[2 * p + 1] - '0'; } else if ((abt[2 * p + 1] >= 'a') && (abt[2 * p + 1] <= 'z')) { k = abt[2 * p + 1] - 'a' + 0x0a; } else { k = abt[2 * p + 1] - 'A' + 0x0a; } int a = (j << 4) + k; byte b = (byte) a; bbt[p] = b; } return bbt; } public static void main(String[] arg) { /** * 68 65 6C 6C 6 F 0A * C4 E3 BA C3 */ String[] str = {"C4", "E3", "BA", "C3"}; // String[] str = {"7E","02","04","00","07","10","00","00","00","00","13","08","4F","01","0B","0B","15","10","14","13","44","7E"}; byte[] b = new byte[str.length]; for(int i=0;i<str.length;i++){ b[i] = hexStringToByte(str[i])[0]; } System.out.println(new String(b)); String strC ="你好"; String bth=bytesToHexString(strC.getBytes()); System.out.println(bth); System.out.println(Short.MAX_VALUE); System.out.println(Integer.toBinaryString(280)); } }