Java如何去除集合中某个字段为空对象呢?

过滤list集合中指定字段为空的元素的方法

借助stream中的filter方法，即可按条件过滤集合中的元素
   如:
集合 集合名称 =  集合.stream()
       .filter(对象 -> 对象.get某个属性() != null)
	   .collect(Collectors.toList());

public class Person {
    private Integer id;
    private String name;
    private String sex;
    private String email;
    private Long phoneNumber;
    private String personUuid;
    /***/
}

 
//测试类

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

public class Test {
    public static void main(String[] args) {
        //模拟数据--->其中person2中的uuid为null
        Person person1 = new Person(1,"猫猫","男","maomao@java265.com",13211227430L,"8BADB4E1-76B0-1323-1C77-F25A1D06045D");
        Person person2 = new Person(2,"狗狗","女","gougou@java265.com",13311111234L,null);
        Person person3= new Person(3,"奥特曼","男","aoteman@java265.com",1331123416L,"A0576C79-1212-879B-146B-1C0D172EC1A6");
        Person person4 = new Person(4,"牛牛","女","niuniu@java265.com",1331133999L,"EC1EE903-FB4E-5672-B95B-2C41A0CAFD82");
        Person person5 = new Person(5,"昭昭","女","zhaohzao@java265.com",13411112111L,null);

        List<Person> personList = new ArrayList<Person>();

        personList.add(person1);
        personList.add(person2);
        personList.add(person3);
        personList.add(person4);
        personList.add(person5);
        //此时person2中的uuid为null。所以某些特定时段会报错。
        personList.forEach(person->{
            System.out.println(person);
        });

        //分割线
        System.out.println("--------------------------------------------------------"); 
        //处理数据
        List<Person> collect = personList.stream().filter(Person -> Person.getPersonUuid() != null).collect(Collectors.toList());

        collect.forEach(person -> {
            System.out.println(person);
        });
    }
}