16进制、中文转换

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class CodeChange {

/*
 * 把中文字符串转换为十六进制Unicode编码字符串
 */
public static String stringToUnicode(String s) {
String str = "";
for (int i = 0; i < s.length(); i++) {
int ch = (int) s.charAt(i);
if (ch > 255)
str += "\\u" + Integer.toHexString(ch);
else
str += "\\" + Integer.toHexString(ch);
}
return str;
}



/*
 *  把十六进制Unicode编码字符串转换为中文字符串
 */
public static String unicodeToString(String str) {
Pattern pattern = Pattern.compile("(\\\\u(\\p{XDigit}{4}))");    
Matcher matcher = pattern.matcher(str);
char ch;
while (matcher.find()) {
ch = (char) Integer.parseInt(matcher.group(2), 16);
str = str.replace(matcher.group(1), ch + "");    
}
return str;
}

public static void main(String[] args) {

// 直接以Unicode字符串的方式初始化字符串时，会自动
String s1 = "\\配\\置\\成\\功\\，\\重\\启\\后\\生\\效";
System.out.println("s1: " + s1);

//转换汉字为Unicode码
String s2 = "配置成功，重启后生效";
s2 = CodeChange.stringToUnicode(s2);
System.out.println("s2: " + s2);

//转换Unicode码为汉字
String aaa ="\u4ec0\u4e48\u662f\u5b89\u5168\u63a7\u4ef6\uff1f###\u5b89\u5168\u63a7\u4ef6\u53ef\u4ee5\u4fdd\u8bc1\u7528\u6237\u7684\u5bc6\u7801\u4e0d\u88ab\u7a83\u53d6\uff0c\u4ece\u800c\u4fdd\u8bc1\u8d44\u91d1\u5b89\u5168";
String s3 = CodeChange.unicodeToString(aaa);
System.out.println("s3: " + s3);

}
}

转自:http://www.oschina.net/code/snippet_142385_4297