最近由于工作需要需要对中文汉字排序，编写了Comparator实现类分享给大家。
直接上代码：
import java.util.Comparator;public class ChineseComparator<T> implements Comparator<T> {private static boolean isDigit(char ch) {return ch >= 48 && ch <= 57;}/*** Length of string is passed in for improved efficiency (only need to calculate it once)**/private static String getChunk(String s, int slength, int marker) {StringBuilder chunk = new StringBuilder();int index = marker;char c = s.charAt(index);chunk.append(c);index++;if (isDigit(c)) {while (index < slength) {c = s.charAt(index);if (!isDigit(c)) {break;}chunk.append(c);index++;}} else {while (index < slength) {c = s.charAt(index);if (isDigit(c)) {break;}chunk.append(c);index++;}}return chunk.toString();}@Overridepublic int compare(Object o1, Object o2) {if (!(o1 instanceof String) || !(o2 instanceof String)) {return 0;}String s1 = (String) o1;String s2 = (String) o2;return compareString(s1,s2);}public static int compareString(String s1,String s2){if(s1 == null){return 1;}if(s2 == null){return -1;}int thisMarker = 0;int thatMarker = 0;int s1Length = s1.length();int s2Length = s2.length();while (thisMarker < s1Length && thatMarker < s2Length) {String thisChunk = getChunk(s1, s1Length, thisMarker);thisMarker += thisChunk.length();String thatChunk = getChunk(s2, s2Length, thatMarker);thatMarker += thatChunk.length();//如果两个字符块都是数字，则按数字排序int result;if (isDigit(thisChunk.charAt(0)) && isDigit(thatChunk.charAt(0))) {result = compareDigit(thisChunk,thatChunk);if (result != 0) {return result;}} else {result = thisChunk.compareTo(thatChunk);}if (result != 0) {return result;}}return s1Length - s2Length;}/*** 按数字比较*/private static int compareDigit(String thisChunk,String thatChunk){int thisChunkLength = thisChunk.length();int result = thisChunkLength - thatChunk.length();if (result == 0) {//诸位比较for (int i = 0; i < thisChunkLength; i++) {result = thisChunk.charAt(i) - thatChunk.charAt(i);if (result != 0) {return result;}}}return result;}}
使用方法：
public static void main(String[] args) {Map<String, Object> map = new HashMap<String, Object>();map.put("name", "高一(1)班");map.put("age", 13);Map<String, Object> map2 = new HashMap<String, Object>();map2.put("name", "高一(11)班");map2.put("age", 15);Map<String, Object> map3 = new HashMap<String, Object>();map3.put("name", "高一(1)班");map3.put("age", 20);Map<String, Object> map4 = new HashMap<String, Object>();map4.put("name", "高一(2)班");map4.put("age", 18);List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();list.add(map);list.add(map2);list.add(map3);list.add(map4);System.out.println("排序前："+list);List<Map> collect =list.stream().sorted((o1, o2) -> ChineseComparator.compareString(o1.get("name")+"",o2.get("name")+"")).collect(Collectors.toList());System.out.println("排序后："+collect);}运行结果如下：
