判断对象的部分属性是否为空

利用反射获取对象属性，遍历进行判断

  /**
     * @param object 需要判断的对象
     * @param fieldList 需要判断的部分属性
     * @return 
     */
 public static boolean checkObjFieldIsNull(Object object, List<String> fieldList) throws IllegalAccessException {
        if (object == null) {
            return true;
        }
        for (Field field : object.getClass().getDeclaredFields()) {
            // 私有属性设置为可见
            field.setAccessible(true);
            // 如果需要进行非空判断
            if(fieldList.contains(field.getName())){
                //属性值
                Object obj = field.get(object);
              // if(obj == null || StringUtils.isNull(obj.toString())){
                if (obj == null || obj.toString().isEmpty()){
                    System.out.println(field.getName() + " can not be null!");
                    return true;
                }
            }
        }
        return false;
    }

测试：

public static void main(String[] args) {
        //需要非空判断的属性
        String[] fieldArray = new String[]{"name","age"};
        List<String> fieldList = Arrays.asList(fieldArray);
        User user = new User("huahua",15,"fm");
        try {
            boolean b = checkObjFieldIsNull(user, fieldList);
            System.out.println(b);
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        }
    }

实体类：

/**
 * @author Administrator
 * @date 2019-08-08 17:41
 */
public class User{
    private String name;
    private Integer age;
    private  String gen;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

    public String getGen() {
        return gen;
    }

    public void setGen(String gen) {
        this.gen = gen;
    }

    public User(String name, Integer age, String gen) {
        this.name = name;
        this.age = age;
        this.gen = gen;
    }

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

    public User(String name) {
        this.name = name;
    }
}