객체 콘텐츠를 가져오기 위한 Java 리플렉션

public static void test(Bean bean) {
 
    Field[] fields = bean.getClass().getDeclaredFields();
    for(Field field :fields) {
        //设置是否允许访问，不是修改原来的访问权限修饰词。
        field.setAccessible(true);
        //获取字段名，和字段的值
        System.out.println("name: "+field.getName() + "value: " +field.get(bean));
    }
       
}

@Data
public class Bean{
private String userName;
private String userId;
private String userPwd;
private String userPhone;
}

public static void main(String[] args){
 
    Bean bean = new Bean();
    bean.setUserName("张大炮");
    bean.setUserId("zdp2000");
    bean.setUserPwd("zhangdapaopwd123");
    bean.setUserPhone("18666886688");
 
    test(bean);
}