unicode 字符串转 表达的字符
package com.yt17lu.commons;import java.util.Scanner;public class UnicodeParse {/** * * @param dataStr * 接受的unicode 字符串 * @return 代表的字符串 * @throws 如果输入的格式不是u后跟2-4位16进制则抛出格式错误 */public static String parse(String dataStr) {boolean matches = dataStr.matches("^(\\\\u\\p{XDigit}{2,4})*$");if (!matches) {throw new RuntimeException(dataStr + ",unicode字符串格式错误");}int start = 0;int end = 0;StringBuffer buffer = new StringBuffer();int len = dataStr.length();while (start < len) {end = dataStr.indexOf("\\u", start + 2);end = (end == -1) ? len : end;String temp = dataStr.substring(start + 2, end);buffer.append((char) Integer.parseInt(temp, 16));start = end;}return buffer.toString();}public static void main(String[] args) {Scanner input = new Scanner(System.in);System.out.println("请输入字符:");String code = input.next();System.out.println(UnicodeParse.parse(code));}}
