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 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 java.util.Comparator;
//比较器类，需要使用pinyin4j 包
public class PinyinComparator implements Comparator {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();}
}

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