The object needs to add additional attributes. There is no need to add attributes in the entity. The required information is returned

User object , Yes id and name Two attributes

Now I want to add additional address and age The value of the property

// Object needs additional attributes , There is no need to add attributes to the entity , Return the required information
        User user = new User();
        String[] colStrings = {"a", "b", "c"};
        user = CommonUtils.generateBean(user, colStrings);
        BeanMap create = BeanMap.create(user);
        create.put("address", "aaaaaaa");
        create.put("age", "11");
        user = (User) create.getBean();
        System.out.println(CommonUtils.toJSONStringContainNullValue(user));

    /**
     * Dynamically add attribute values
     * @param t Entity
     * @param columns Attribute array
     * @return
     */
    @SuppressWarnings("unchecked")
    public static <T> T generateBean(T t,String... columns){
        BeanGenerator generator = new BeanGenerator();
        generator.setSuperclass(t.getClass());
        for(String str : columns){
            generator.addProperty(str, Object.class); 
        }
        Object o=generator.create();
        BeanUtils.copyProperties(t, o);
        return (T)o;
    }