感谢 http://my.oschina.net/leejun2005/blog/106791

代码如下:

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进制数据
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("中国1a23"));
System.out.println(hex2Str(str2Hex("中国1a23")));
System.out.println(hex2Str("\\xE9\\xA6\\x96\\xE9\\xA1\\xB5\\xE6\\x8E\\xA8\\xE8\\x8D\\x90"));
} }

这里有个很恶心的问题。

只能转换成纯中文的, 也就是说如果待转换的字符串中,存在正常的符号数字字母时,会报错  

05-08 14:48