ssm淘淘网电子商城项目源码的代码详情-代码-最代码

首页>代码>ssm淘淘网电子商城项目源码>/source/taotao-cart-web/src/main/java/com/taotao/cart/controller/CartController.java
001package com.taotao.cart.controller;
002 
003import java.util.ArrayList;
004import java.util.List;
005 
006import javax.servlet.http.HttpServletRequest;
007import javax.servlet.http.HttpServletResponse;
008 
009import org.apache.commons.lang3.StringUtils;
010import org.springframework.beans.factory.annotation.Autowired;
011import org.springframework.beans.factory.annotation.Value;
012import org.springframework.stereotype.Controller;
013import org.springframework.web.bind.annotation.PathVariable;
014import org.springframework.web.bind.annotation.RequestMapping;
015import org.springframework.web.bind.annotation.RequestParam;
016import org.springframework.web.bind.annotation.ResponseBody;
017 
018import com.taotao.common.pojo.TaotaoResult;
019import com.taotao.common.utils.CookieUtils;
020import com.taotao.common.utils.JsonUtils;
021import com.taotao.pojo.TbItem;
022import com.taotao.service.ItemService;
023 
024/**
025 * 购物车管理Controller
026 * <p>Title: CartController</p>
027 * <p>Description: </p>
028 * <p>Company: www.itcast.cn</p> 
029 * @version 1.0
030 */
031@Controller
032public class CartController {
033     
034    @Value("${CART_KEY}")
035    private String CART_KEY;
036    @Value("${CART_EXPIER}")
037    private Integer CART_EXPIER;
038    @Autowired
039    private ItemService itemService;
040 
041    @RequestMapping("/cart/add/{itemId}")
042    public String addItemCart(@PathVariable Long itemId, 
043            @RequestParam(defaultValue="1")Integer num, HttpServletRequest request,
044            HttpServletResponse response) {
045        //取购物车商品列表
046        List<TbItem> cartItemList = getCartItemList(request);
047        //判断商品在购物车中是否存在
048        boolean flag = false;
049        for (TbItem tbItem : cartItemList) {
050            if (tbItem.getId() == itemId.longValue()) {
051                //如果存在数量相加
052                tbItem.setNum(tbItem.getNum() + num);
053                flag = true;
054                break;
055            }
056        }
057        //如果不存在，添加一个新的商品
058        if (!flag) {
059            //需要调用服务取商品信息
060            TbItem tbItem = itemService.getItemById(itemId);
061            //设置购买的商品数量
062            tbItem.setNum(num);
063            //取一张图片
064            String image = tbItem.getImage();
065            if (StringUtils.isNotBlank(image)) {
066                String[] images = image.split(",");
067                tbItem.setImage(images[0]);
068            }
069            //把商品添加到购物车
070            cartItemList.add(tbItem);
071        }
072        //把购物车列表写入cookie
073        CookieUtils.setCookie(request, response, CART_KEY, JsonUtils.objectToJson(cartItemList),
074                CART_EXPIER, true);
075        //返回添加成功页面
076        return "cartSuccess";
077    }
078     
079    private List<TbItem> getCartItemList(HttpServletRequest request) {
080        //从cookie中取购物车商品列表
081        String json = CookieUtils.getCookieValue(request, CART_KEY, true);
082        if (StringUtils.isBlank(json)) {
083            //如果没有内容，返回一个空的列表
084            return new ArrayList<>();
085        }
086        List<TbItem> list = JsonUtils.jsonToList(json, TbItem.class);
087        return list;
088    }
089     
090    @RequestMapping("/cart/cart")
091    public String showCartList(HttpServletRequest request) {
092        //从cookie中取购物车列表
093        List<TbItem> cartItemList = getCartItemList(request);
094        //把购物车列表传递给jsp
095        request.setAttribute("cartList", cartItemList);
096        //返回逻辑视图
097        return "cart";
098    }
099     
100    @RequestMapping("/cart/update/num/{itemId}/{num}")
101    @ResponseBody
102    public TaotaoResult updateItemNum(@PathVariable Long itemId, @PathVariable Integer num,
103            HttpServletRequest request, HttpServletResponse response) {
104        //从cookie中取购物车列表
105        List<TbItem> cartList = getCartItemList(request);
106        //查询到对应的商品
107        for (TbItem tbItem : cartList) {
108            if (tbItem.getId() == itemId.longValue()) {
109                //更新商品数量
110                tbItem.setNum(num);
111                break;
112            }
113        }
114        //把购车列表写入 cookie
115        CookieUtils.setCookie(request, response, CART_KEY, JsonUtils.objectToJson(cartList),
116                CART_EXPIER, true);
117        //返回成功
118        return TaotaoResult.ok();
119    }
120     
121    @RequestMapping("/cart/delete/{itemId}")
122    public String deleteCartItem(@PathVariable Long itemId, HttpServletRequest request ,
123            HttpServletResponse response) {
124        //从cookie中取购物车列表
125        List<TbItem> cartItemList = getCartItemList(request);
126        //找到对应的商品
127        for (TbItem tbItem : cartItemList) {
128            if (tbItem.getId() == itemId.longValue()) {
129                //删除商品
130                cartItemList.remove(tbItem);
131                break;
132            }
133        }
134        //把购车列表写入cookie
135        CookieUtils.setCookie(request, response, CART_KEY, JsonUtils.objectToJson(cartItemList),
136                CART_EXPIER, true);
137        //重定向到购物车列表页面
138        return "redirect:/cart/cart.html";
139    }
140}