最近遇到一个需求，需要对一个列表数据的特定字段，比如姓名，初看应该不难，但是有什么比较快速便捷的方法，因为是Java的项目，所以想到比较火的工具框架Hutool，在Hutool官网 找到一个比较器类PinyinComparator

实验环境准备

• JDK 1.8
• SpringBoot 3.3.0
• Maven 3.3.9
• Hutool 5.7.1
• 开发工具
  • IntelliJ IDEA
  • smartGit

代码实现

基于jdk8的集合列表遍历，将hutool的PinyinComparator传入即可

@Test
public void testComparator() {
	List<RecordDto> list = Lists.newArrayList();
	RecordDto record01= new RecordDto();
	record01.setStuName("风清扬");

	RecordDto record02= new RecordDto();
	record02.setStuName("小明");

	RecordDto record03= new RecordDto();
	record03.setStuName("杰克");

	list.add(record01);
	list.add(record02);
	list.add(record03);

	list = list.stream()
			.sorted(Comparator.comparing(RecordDto ::getSName, new PinyinComparator()))
			.collect(Collectors.toList());

	list.stream().forEach(e -> {
		System.out.println(e.getSName());
	});
}

源码实现

PinyinComparator也是基于Comparator接口

//
// Source code recreated from a .class file by IntelliJ IDEA
// (powered by Fernflower decompiler)
//

package cn.hutool.core.comparator;

import java.io.Serializable;
import java.text.Collator;
import java.util.Comparator;
import java.util.Locale;

public class PinyinComparator implements Comparator<String>, Serializable {
    private static final long serialVersionUID = 1L;
    final Collator collator;

    public PinyinComparator() {
        this.collator = Collator.getInstance(Locale.CHINESE);
    }

    public int compare(String o1, String o2) {
        return this.collator.compare(o1, o2);
    }
}