java判断对象中某个属性是否为空方法代码

public class Student {
    private Integer id;
    private String name;
    private String age;
    private String course;
    public Integer getId() {
        return id;
    }
    public void setId(Integer id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getAge() {
        return age;
    }
    public void setAge(String age) {
        this.age = age;
    }
    public String getCourse() {
        return course;
    }
    public void setCourse(String course) {
        this.course = course;
    }
}

    @Test
    public void test(){
        //数据模拟
        Student student = new Student();
        student.setId(1);
        student.setName("张三");
        student.setAge("12");
        //这里不对course属性赋值
//        student.setCourse("语文,数学,英语");
        System.out.println(student.getId());
        System.out.println(student.getName());
        System.out.println(student.getAge());
        System.out.println(student.getCourse());
    }

    @Test
    public void test(){
        //数据模拟
        Student student = new Student();
        student.setId(1);
        student.setName("张三");
        student.setAge("12");
        //这里不对course属性赋值
//        student.setCourse("语文,数学,英语");
        System.out.println(student.getCourse().length());
    }

public class ObjectUtil {
    /**
     * 判断对象中部分属性值是否不为空
     *
     * @param object       对象
     * @param excludeFieldNames 选择校验的属性名称List集合
     * @return
     */
    public static boolean checkObjFieldsIsNotNull(Object object, List<String> excludeFieldNames) {
        if (null == object) {
            return false;
        }
        try {
            for (Field f : object.getClass().getDeclaredFields()) {
                f.setAccessible(true);
                if (excludeFieldNames.contains(f.getName()) && f.get(object) != null && StringUtils.isNotBlank(f.get(object).toString())) {
                    return true;
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return false;
    }
}

    @Test
    public void test(){
        //数据模拟
        Student student = new Student();
        student.setId(1);
        student.setName("张三");
        student.setAge("12");
        //这里不对course属性赋值
//        student.setCourse("语文,数学,英语");
        //当course属性为空时
        System.out.println("执行开始");
        if (ObjectUtil.checkObjFieldsIsNotNull(student,Arrays.asList("course"))){
            System.out.println("执行");
            System.out.println(student.getCourse().length());
        }
        System.out.println("执行完毕");
    }

    @Test
    public void test(){
        //数据模拟
        Student student = new Student();
        student.setId(1);
        student.setName("张三");
        student.setAge("12");
        student.setCourse("语文,数学,英语");
        System.out.println("执行开始");
        if (ObjectUtil.checkObjFieldsIsNotNull(student,Arrays.asList("course"))){
            System.out.println("执行");
            System.out.println(student.getCourse().length());
        }
        System.out.println("执行完毕");
    }