源代码下载地址&＃xff1a; 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&＃xff01; 如果做开发&＃xff0c;通常用户登陆密码都会 mad5(salt &＃43; pwd) 然后再将 md 之后的数据 hex 一下。 这个工具类&＃xff0c;就是实现此效果的。
package com.zuidaima.haohui.common.utils;
public class Hex {public static String str2HexStr(String str) {char[] chars &＃61; "0123456789ABCDEF".toCharArray();StringBuilder sb &＃61; new StringBuilder("");byte[] bs &＃61; str.getBytes();int bit;for (int i &＃61; 0; i 0x0f0) >> 4;sb.append(chars[bit]);bit &＃61; bs[i] & 0x0f;sb.append(chars[bit]);sb.append(&＃39; &＃39;);}return sb.toString().trim();}public static String hexStr2Str(String hexStr) {String str &＃61; "0123456789ABCDEF";char[] hexs &＃61; hexStr.toCharArray();byte[] bytes &＃61; new byte[hexStr.length() / 2];int n;for (int i &＃61; 0; i 2 * i]) * 16;n &＃43;&＃61; str.indexOf(hexs[2 * i &＃43; 1]);bytes[i] &＃61; (byte) (n & 0xff);}return new String(bytes);}public static String byte2HexStr(byte[] b) {String stmp &＃61; "";StringBuilder sb &＃61; new StringBuilder("");for (int n &＃61; 0; n 0xFF);sb.append((stmp.length() &＃61;&＃61; 1) ? "0" &＃43; stmp : stmp);
}return sb.toString().toUpperCase().trim();}public static byte[] hexStr2Bytes(String src) {int m &＃61; 0, n &＃61; 0;int l &＃61; src.length() / 2;System.out.println(l);byte[] ret &＃61; new byte[l];for (int i &＃61; 0; i 2 &＃43; 1;n &＃61; m &＃43; 1;ret[i] &＃61; Byte.decode("0x" &＃43; src.substring(i * 2, m) &＃43; src.substring(m, n));}return ret;}public static String strToUnicode(String strText) throws Exception {char c;StringBuilder str &＃61; new StringBuilder();int intAsc;String strHex;for (int i &＃61; 0; i int) c;strHex &＃61; Integer.toHexString(intAsc);if (intAsc > 128)str.append("\\u" &＃43; strHex);elsestr.append("\\u00" &＃43; strHex);}return str.toString();}public static String unicodeToString(String hex) {int t &＃61; hex.length() / 6;StringBuilder str &＃61; new StringBuilder();for (int i &＃61; 0; i 6, (i &＃43; 1) * 6);String s1 &＃61; s.substring(2, 4) &＃43; "00";String s2 &＃61; s.substring(4);int n &＃61; Integer.valueOf(s1, 16) &＃43; Integer.valueOf(s2, 16);char[] chars &＃61; Character.toChars(n);str.append(new String(chars));}return str.toString();}public static void main(String[] args) {String hex &＃61; "ef2c71b29202f3e642f2abd8d518f367ec3fbf6a6a61beb678ae0c871ee368ac";System.out.println(Hex.hexStr2Str(hex));}
}
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