entity与map转换

╰+哭是因爲堅強的太久メ 2022-01-29 08:35 304阅读 0赞

1.BeanMap.create(pacdto)
    
    2.BeanUtils.copyProperties(x,x)
    
    3.BeanUtils.populate(x,x)
    
    
    
    -->4、5有局限(String)
    
    4.
    
    /**
      * @author: tianyong
      * @time: 2019/5/21 10:40
      * @description:实体对象转成Map
      */
    public static Map<String, Object> object2Map(Object obj) {
        Map<String, Object> map = new HashMap<>();
        if (obj == null) {
            return map;
        }
        Class clazz = obj.getClass();
        Field[] fields = clazz.getDeclaredFields();
        try {
            for (Field field : fields) {
                field.setAccessible(true);
                map.put(field.getName(), field.get(obj));
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return map;
    }
    
    5.
    
    /**
      * @author: tianyong
      * @time: 2019/5/21 10:40
      * @description:Map转成实体对象
      */
    public static Object map2Object(Map<String, Object> map, Class<?> clazz) {
        if (map == null) {
            return null;
        }
        Object obj = null;
        try {
            obj = clazz.newInstance();
    
            Field[] fields = obj.getClass().getDeclaredFields();
            for (Field field : fields) {
                int mod = field.getModifiers();
                if (Modifier.isStatic(mod) || Modifier.isFinal(mod)) {
                    continue;
                }
                field.setAccessible(true);
                field.set(obj, map.get(field.getName()));
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return obj;
    }