中文和unicode互相转换

package unicode;

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 s3 = CodeChange.unicodeToString(s2);
??System.out.println("s3: " + s3);
?}

?

}

?