比较相同对象 指定属性值 是否相同

public class Demo2 {

    private Integer id;

    @MyAnnotation
    private String name;

    @MyAnnotation
    private Integer age;

    public String getName() {
        return name;
    }

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

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

    public Integer getAge() {
        return age;
    }

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

    public static void main(String[] args) throws Exception {
        Demo2 demo = new Demo2();
        demo.setId(1);
        demo.setName("小明");
        demo.setAge(11);

        Demo2 demo2 = new Demo2();
        demo2.setId(1);
        demo2.setName("小明");
        demo2.setAge(13);

         if(compareField(demo, demo2)){
             System.out.println("属性值变化了。。。。。。");
         }


    }


    public static Boolean compareField(Object account, Object oldAccount) throws Exception {

        if(account ==null && oldAccount==null){
            return Boolean.FALSE;
        }
        if(account!=null || oldAccount==null){
            return Boolean.TRUE;
        }
        Class clazz = account.getClass();
        Class clazz2 = oldAccount.getClass();
        if(!clazz.equals(clazz2)){
            throw  new Exception("对象不是同一个,无法比对字段值");
        }

        Field[] fildArray = clazz.getDeclaredFields();
        for (Field field : fildArray) {
            if(field.isAnnotationPresent(MyAnnotation.class)){
                field.setAccessible(true);
                Object newField = field.get(account);
                Field declaredField = clazz2.getDeclaredField(field.getName());
                declaredField.setAccessible(true);
                Object oldField = declaredField.get(oldAccount);
                if(!(newField+"").equals(oldField+"")){
                    return Boolean.TRUE;
                }
            }
        }

        return Boolean.FALSE;


    }

}

@Target({ElementType.ANNOTATION_TYPE, ElementType.FIELD, ElementType.METHOD, ElementType.PARAMETER})
@Retention(RetentionPolicy.RUNTIME)
public @interface MyAnnotation {


}