java随机生成中文

import java.io.UnsupportedEncodingException;import java.util.Date;import java.util.Random;public class ChineseUtils {private static Random random = null;private static Random getRandomInstance() {if (random == null) {random = new Random(new Date().getTime());}return random;}public static String getChinese() {String str = null;int highPos, lowPos;Random random = getRandomInstance();highPos = (176 + Math.abs(random.nextInt(39)));lowPos = 161 + Math.abs(random.nextInt(93));byte[] b = new byte[2];b[0] = (new Integer(highPos)).byteValue();b[1] = (new Integer(lowPos)).byteValue();try {str = new String(b, "GB2312");} catch (UnsupportedEncodingException e) {e.printStackTrace();}return str;}public static String getFixedLengthChinese(int length) {String str = "";for (int i = length; i > 0; i--) {str = str + ChineseUtils.getChinese();}return str;}public static String getRandomLengthChiness(int start, int end) {String str = "";int length = new Random().nextInt(end + 1);if (length < start) {str = getRandomLengthChiness(start, end);} else {for (int i = 0; i < length; i++) {str = str + getChinese();}}return str;}public static void main(String args[]) {System.out.println(ChineseUtils.getChinese());System.out.println(ChineseUtils.getFixedLengthChinese(20));System.out.println(ChineseUtils.getRandomLengthChiness(2, 5));}}