Map转换为JAVABean的方法

• 用jackson来干

    Object originOrderDtoMap=orderService.findById(orderDto.getId());
    ObjectMapper mapper = new ObjectMapper();
    String json = mapper.writeValueAsString(originOrderDtoMap);
    OrderDto originOrderDto = mapper.readValue(json, OrderDto.class);

其他方法参考：http://blog.youkuaiyun.com/cuidiwhere/article/details/8130434