Java对象中的字段按汉语拼音首字母排序

话不多说看代码package com.*;import org.junit.Test;import java.util.ArrayList;import java.util.Collections;import java.util.List;//测试类public class Demo {@Testpublic void test_sort_pinyin() {List<User> userList = new ArrayList<>();userList.add(new User("博爱大",22));userList.add(new User("华三",22));userList.add(new User("是你吗",22));userList.add(new User("不对",22));userList.add(new User("疫情",22));userList.add(new User("1哈哈",22));userList.add(new User("张三",22));userList.add(new User("李四",22));userList.add(new User("王五",22));userList.add(new User("赵六",22));userList.add(new User("JAVA",22));userList.add(new User("$%$",22));userList.add(new User("123",22));userList.add(new User("1哈哈A",22));userList.add(new User("1哈哈b",22));Collections.sort(userList, new PinyinComparator());System.out.println(userList.toString());}}

package com.*;import java.io.Serializable;//用户对象类public class User implements Serializable {private String name;private Integer age;public User(String name, Integer age) {this.name = name;this.age = age;}public String getName() {return name;}public void setName(String name) {this.name = name;}public Integer getAge() {return age;}public void setAge(Integer age) {this.age = age;}}

package com.itcast;import net.sourceforge.pinyin4j.PinyinHelper;import parator;//比较器类，需要使用pinyin4j 包public class PinyinComparator implements Comparator<User> {public int compare(User o1, User o2) {char c1 = (o1.getName()).charAt(0);char c2 = (o2.getName()).charAt(0);return concatPinyinStringArray(PinyinHelper.toHanyuPinyinStringArray(c1)).compareTo(concatPinyinStringArray(PinyinHelper.toHanyuPinyinStringArray(c2)));}private String concatPinyinStringArray(String[] pinyinArray) {StringBuffer pinyinSbf = new StringBuffer();if ((pinyinArray != null) && (pinyinArray.length > 0)) {for (int i = 0; i < pinyinArray.length; i++) {pinyinSbf.append(pinyinArray[i]);}}return pinyinSbf.toString();}}