利用java反射機制修改屬性值

 

 

/**
 * 設置對象屬性值
 * 默認值
 *
 * @param obj
 * @param fieldName
 * @param value
 */
public static void setObjFieldVal(Object obj, String fieldName, Object value) {
    try {
        Field field = obj.getClass().getDeclaredField(fieldName);
        field.setAccessible(true);
        field.set(obj, value);
    } catch (NoSuchFieldException e) {
        log.error("error while set obj field value", e);
    } catch (IllegalAccessException e1) {
        log.error("error while set obj field value", e1);
    }
}