对象list根据某一属性进行去重 java8

可以使用Java 8的Stream API来对对象列表根据某一属性进行去重。下面是一个示例代码：

import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;

class Person {
    private String name;
    private int age;

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

    public String getName() {
        return name;
    }

    public int getAge() {
        return age;
    }
}

public class Main {
    public static void main(String[] args) {
        List<Person> people = new ArrayList<>();
        people.add(new Person("John", 25));
        people.add(new Person("John", 30));
        people.add(new Person("Mary", 28));
        people.add(new Person("Mary", 35));
        people.add(new Person("John", 25));

        List<Person> distinctPeople = people.stream()
                .collect(Collectors.groupingBy(Person::getName))
                .values()
                .stream()
                .map(group -> group.get(0))
                .collect(Collectors.toList());

        distinctPeople.forEach(person -> System.out.println(person.getName() + " - " + person.getAge()));
    }
}

输出结果为：

John - 25
Mary - 28
``