关于 org.springframework.cglib.beans.BeanCopier 复制对象的测试

public class Test {
    // 做个小测试
    public static void main(String[] args) {
        Teacher teacher = new Teacher();
        teacher.setId("1");
        teacher.setName("小李");
//      teacher.setAge(30);
        Student student = new Student();
        student.setId("2");
        student.setName("张三");
        student.setAge(16);
        BeanCopier copier = BeanCopier.create(Teacher.class, Student.class, false);
        copier.copy(teacher, student, null);

        System.out.println(student.toString());
    }

    @Data
    static
    class Teacher {
        private String id;
        private String name;
        private Integer age;
    }

    @Data
    static
    class Student {
        private String id;
        private String name;
        private Integer age;
    }
}

运行结果：

ReportFreshmanServiceImpl.Student(id=1, name=小李, age=null)

结论：

• 会覆盖原有值
• 空值不会复制
• 空值也会复制