怎么根据数据库中id在后端将数据分成若干类返回给前端

Question

@RequestMapping(value="/selectProductByTypeid.do")

public Object selectProductByTypeid(@RequestParam int typeid ,HttpSession session){

ProductService service=new ProductServiceImpl();

Product product=service.selectProductByTypeid(typeid);

return null;

}

Answer 1

添加注解@ResponseBody直接返回prodcut对象，请求会直接将对象序列化成json返回到前端