stream流根据某个属性去重

需求：根据学生名称去重，获取新的集合

1.实体类

@Data
public class Student {
  private String stuNo;
  private String name;
}

2.实现

//filter去重方法实现类
private static <T> Predicate<T> distinctByKey(Function<? super T, ?> keyExtractor) {
    Set<Object> seen = ConcurrentHashMap.newKeySet();
    return t -> seen.add(keyExtractor.apply(t));
}

//直接运行测试方法
@Test
public void distinctByProperty1() throws Exception {
    //根据对象的属性去重
    List<Student> nList2 = studentList.stream().filter(distinctByKey(Student::getName))
                                     .collect(Collectors.toList());
}