感謝 http://my.oschina.net/leejun2005/blog/106791
代碼如下:
public class App { public static String str2Hex(String str) throws UnsupportedEncodingException { String hexRaw = String.format("%x", new BigInteger(1, str.getBytes("UTF-8"))); char[] hexRawArr = hexRaw.toCharArray(); StringBuilder hexFmtStr = new StringBuilder(); final String SEP = "\\x"; for (int i = 0; i < hexRawArr.length; i++) { hexFmtStr.append(SEP).append(hexRawArr[i]).append(hexRawArr[++i]); } return hexFmtStr.toString(); } public static String hex2Str(String str) throws UnsupportedEncodingException { String strArr[] = str.split("\\\\"); // 分割拿到形如 xE9 的16進制數據 byte[] byteArr = new byte[strArr.length - 1]; for (int i = 1; i < strArr.length; i++) { Integer hexInt = Integer.decode("0" + strArr[i]); byteArr[i - 1] = hexInt.byteValue(); } return new String(byteArr, "UTF-8"); } public static void main(String[] args) throws UnsupportedEncodingException { System.out.println(str2Hex("中國1a23")); System.out.println(hex2Str(str2Hex("中國1a23"))); System.out.println(hex2Str("\\xE9\\xA6\\x96\\xE9\\xA1\\xB5\\xE6\\x8E\\xA8\\xE8\\x8D\\x90")); } }
這里有個很惡心的問題。
只能轉換成純中文的, 也就是說如果待轉換的字符串中,存在正常的符號數字字母時,會報錯