package com.itheima.web.servlet; import com.alibaba.fastjson.JSON; import com.itheima.pojo.Brand; import com.itheima.service.BrandService; import com.itheima.service.impl.BrandServiceImpl; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.BufferedReader; import java.io.IOException; import java.util.List; @WebServlet("/brand/*") public class BrandServlet extends BaseServlet{ private BrandService brandService = new BrandServiceImpl(); public void selectAll(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { //1. 调用service查询 List<Brand> brands = brandService.selectAll(); //2. 转为JSON String jsonString = JSON.toJSONString(brands); //3. 写数据 response.setContentType("text/json;charset=utf-8"); response.getWriter().write(jsonString); } public void add(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException{ //1. 接受品牌数据 BufferedReader br = request.getReader(); String params = br.readLine();//json字符串 //2. 转为Brand对象 Brand brand = JSON.parseObject(params, Brand.class); //3. 调用service添加 brandService.add(brand); //4. 添加成功,响应标识 response.getWriter().write("success"); } }