Java8集合内对象按照多条件排序及取前几条

1，实例代码，注意（如果排序属性为字符串，必须要给其转换为数字类型，而后排序，否则排序不准）

import lombok.Data;

import java.util.Arrays;
import java.util.Comparator;
import java.util.List;
import java.util.stream.Collectors;

public class Test {
    public static void main(String[] args) {
        Person p1 = new Person("zhangsan", 11, "180");
        Person p2 = new Person("lisi", 10, "190");
        Person p3 = new Person("wangwu", 10, "160");
        Person p5 = new Person("xiaozhang", 10, "170");
        Person p4 = new Person("zhouliu", 9, "170");

        List<Person> people = Arrays.asList(p1, p2, p3, p4,p5);

        List<Person> ageSortList = people.stream().sorted(Comparator.comparing(Person::getAge)).collect(Collectors.toList());
        ageSortList.stream().sorted(Comparator.comparing(Person::getAge)
                .thenComparing(Person::getTall, Comparator.reverseOrder()))
                .forEach(System.out::println);

    }

    @Data
    static class Person {
        private String name;
        private Integer age;
        private String tall;

        public Person(String name, Integer age, String tall) {
            this.name = name;
            this.age = age;
            this.tall = tall;
        }
    }
}

参考文章

Comparator 使用详解

https://www.cnblogs.com/kuanglongblogs/p/11230250.html