import java.util.regex.Matcher; import java.util.regex.Pattern; public class Unicode { public Unicode() { } public static void main(String[] args) { String str = "你好"; String str1 = StringToUnicode(str); System.out.println(str1); String str2 = "\u54c8\u54c8"; System.out.println(str2); } public static String StringToUnicode(String str) { StringBuffer strb = new StringBuffer(); for (int i = 0; i < str.length(); i++) { strb.append("\\u").append(Integer.toHexString(str.charAt(i))); } return strb.toString(); } 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; } }