源代码下载地址:http://www.zuidaima.com/share/1550463378410496.htm
Java 字符串转 16 进制工具类 Hex.java 实现 16进制 0xfecd .. 和 java 字符串之间的互转换! 如果做开发,通常用户登陆密码都会 mad5(salt + pwd) 然后再将 md 之后的数据 hex 一下。 这个工具类,就是实现此效果的。
/* * */ package com.zuidaima.haohui.common.utils; /** * <pre> * 16进制值与String/Byte之间的转换 * @author JerryLi * @email [email protected] * @data 2011-10-16 * http://blog.csdn.net/hzbigdog/article/details/6877712 * * http://www.blogjava.net/lijinglin/archive/2011/11/02/362567.html * </pre> * * @project baidamei * @author www.zuidaima.com * @create 2012-11-14 下午5:53:14 */ public class Hex { /** * 字符串转换成十六进制字符串 * * @param String * str 待转换的ASCII字符串 * @return String 每个Byte之间空格分隔,如: [61 6C 6B] */ 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]); sb.append(' '); } return sb.toString().trim(); } /** * 十六进制转换字符串 * * @param String * str Byte字符串(Byte之间无分隔符 如:[616C6B]) * @return String 对应的字符串 */ public static String hexStr2Str(String hexStr) { String str = "0123456789ABCDEF"; char[] hexs = hexStr.toCharArray(); byte[] bytes = new byte[hexStr.length() / 2]; int n; for (int i = 0; i < bytes.length; i++) { n = str.indexOf(hexs[2 * i]) * 16; n += str.indexOf(hexs[2 * i + 1]); bytes[i] = (byte) (n & 0xff); } return new String(bytes); } /** * bytes转换成十六进制字符串 * * @param byte[] b byte数组 * @return String 每个Byte值之间空格分隔 */ public static String byte2HexStr(byte[] b) { String stmp = ""; StringBuilder sb = new StringBuilder(""); for (int n = 0; n < b.length; n++) { stmp = Integer.toHexString(b[n] & 0xFF); sb.append((stmp.length() == 1) ? "0" + stmp : stmp); // sb.append(" "); } return sb.toString().toUpperCase().trim(); } /** * bytes字符串转换为Byte值 * * @param String * src Byte字符串,每个Byte之间没有分隔符 * @return byte[] */ public static byte[] hexStr2Bytes(String src) { int m = 0, n = 0; int l = src.length() / 2; System.out.println(l); byte[] ret = new byte[l]; for (int i = 0; i < l; i++) { m = i * 2 + 1; n = m + 1; ret[i] = Byte.decode("0x" + src.substring(i * 2, m) + src.substring(m, n)); } return ret; } /** * String的字符串转换成unicode的String * * @param String * strText 全角字符串 * @return String 每个unicode之间无分隔符 * @throws Exception */ public static String strToUnicode(String strText) throws Exception { char c; StringBuilder str = new StringBuilder(); int intAsc; String strHex; for (int i = 0; i < strText.length(); i++) { c = strText.charAt(i); intAsc = (int) c; strHex = Integer.toHexString(intAsc); if (intAsc > 128) str.append("\\u" + strHex); else // 低位在前面补00 str.append("\\u00" + strHex); } return str.toString(); } /** * unicode的String转换成String的字符串 * * @param String * hex 16进制值字符串 (一个unicode为2byte) * @return String 全角字符串 */ public static String unicodeToString(String hex) { int t = hex.length() / 6; StringBuilder str = new StringBuilder(); for (int i = 0; i < t; i++) { String s = hex.substring(i * 6, (i + 1) * 6); // 高位需要补上00再转 String s1 = s.substring(2, 4) + "00"; // 低位直接转 String s2 = s.substring(4); // 将16进制的string转为int int n = Integer.valueOf(s1, 16) + Integer.valueOf(s2, 16); // 将int转换为字符 char[] chars = Character.toChars(n); str.append(new String(chars)); } return str.toString(); } public static void main(String[] args) { String hex = "ef2c71b29202f3e642f2abd8d518f367ec3fbf6a6a61beb678ae0c871ee368ac"; System.out.println(Hex.hexStr2Str(hex)); } }
时间: 2024-10-03 13:39:48