注释

src/main/java/com/wsk/controller/HomeController.java

@@ -0,0 +1,241 @@
+package com.wsk.controller;
+
+import com.wsk.bean.ShopInformationBean;
+import com.wsk.pojo.*;
+import com.wsk.service.*;
+import com.wsk.tool.StringUtils;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.ResponseBody;
+
+import javax.annotation.Resource;
+import javax.servlet.http.HttpServletRequest;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Created by wsk1103 on 2017/5/11.
+ */
+@Controller
+public class HomeController {
+    @Resource
+    private ShopInformationService shopInformationService;
+    @Resource
+    private SpecificeService specificeService;
+    @Resource
+    private ClassificationService classificationService;
+    @Resource
+    private AllKindsService allKindsService;
+    @Resource
+    private ShopContextService shopContextService;
+
+
+    @RequestMapping(value = {"/", "/home.do"})
+    public String home(HttpServletRequest request, Model model) {
+        UserInformation userInformation = (UserInformation) request.getSession().getAttribute("userInformation");
+        // if user login,the session will have the "userInformation"
+        if (!StringUtils.getInstance().isNullOrEmpty(userInformation)) {
+            model.addAttribute("userInformation", userInformation);
+        } else {
+            userInformation = new UserInformation();
+            model.addAttribute("userInformation", userInformation);
+        }
+        //一般形式进入首页
+        try {
+            List<ShopInformation> shopInformations = selectTen(1, 5);
+            List<ShopInformationBean> list = new ArrayList<>();
+            int counts = getShopCounts();
+            model.addAttribute("shopInformationCounts", counts);
+            String stringBuffer;
+            for (ShopInformation shopInformation : shopInformations) {
+                stringBuffer = getSortName(shopInformation.getSort());
+                ShopInformationBean shopInformationBean = new ShopInformationBean();
+                shopInformationBean.setId(shopInformation.getId());
+                shopInformationBean.setName(shopInformation.getName());
+                shopInformationBean.setLevel(shopInformation.getLevel());
+                shopInformationBean.setPrice(shopInformation.getPrice().doubleValue());
+                shopInformationBean.setRemark(shopInformation.getRemark());
+                shopInformationBean.setSort(stringBuffer);
+                shopInformationBean.setQuantity(shopInformation.getQuantity());
+                shopInformationBean.setUid(shopInformation.getUid());
+                shopInformationBean.setTransaction(shopInformation.getTransaction());
+                shopInformationBean.setImage(shopInformation.getImage());
+                list.add(shopInformationBean);
+            }
+            model.addAttribute("shopInformationBean", list);
+        } catch (Exception e) {
+            e.printStackTrace();
+            return "page/login_page";
+        }
+        return "index";
+    }
+
+    //进入商城
+    @RequestMapping(value = "/mall_page.do")
+    public String mallPage(HttpServletRequest request, Model model) {
+        UserInformation userInformation = (UserInformation) request.getSession().getAttribute("userInformation");
+        if (StringUtils.getInstance().isNullOrEmpty(userInformation)) {
+            userInformation = new UserInformation();
+            model.addAttribute("userInformation", userInformation);
+        } else {
+            model.addAttribute("userInformation", userInformation);
+        }
+        try {
+            List<ShopInformation> shopInformations = selectTen(1, 12);
+            List<ShopInformationBean> list = new ArrayList<>();
+            int counts = getShopCounts();
+            model.addAttribute("shopInformationCounts", counts);
+            String sortName;
+            for (ShopInformation shopInformation : shopInformations) {
+                int sort = shopInformation.getSort();
+                sortName = getSortName(sort);
+                ShopInformationBean shopInformationBean = new ShopInformationBean();
+                shopInformationBean.setId(shopInformation.getId());
+                shopInformationBean.setName(shopInformation.getName());
+                shopInformationBean.setLevel(shopInformation.getLevel());
+                shopInformationBean.setRemark(shopInformation.getRemark());
+                shopInformationBean.setPrice(shopInformation.getPrice().doubleValue());
+                shopInformationBean.setSort(sortName);
+                shopInformationBean.setQuantity(shopInformation.getQuantity());
+                shopInformationBean.setTransaction(shopInformation.getTransaction());
+                shopInformationBean.setUid(shopInformation.getUid());
+                shopInformationBean.setImage(shopInformation.getImage());
+                list.add(shopInformationBean);
+            }
+            model.addAttribute("shopInformationBean", list);
+        } catch (Exception e) {
+            e.printStackTrace();
+            return "page/login_page";
+        }
+        return "page/mall_page";
+    }
+
+    //通过分类的第三层id获取全名
+    private String getSortName(int sort) {
+        StringBuilder stringBuffer = new StringBuilder();
+        Specific specific = selectSpecificBySort(sort);
+        int cid = specific.getCid();
+        Classification classification = selectClassificationByCid(cid);
+        int aid = classification.getAid();
+        AllKinds allKinds = selectAllKindsByAid(aid);
+        stringBuffer.append(allKinds.getName());
+        stringBuffer.append("-");
+        stringBuffer.append(classification.getName());
+        stringBuffer.append("-");
+        stringBuffer.append(specific.getName());
+//        System.out.println(sort);
+        return stringBuffer.toString();
+    }
+
+    //获得分类中的第一层
+    @RequestMapping(value = "/getAllKinds.do")
+    @ResponseBody
+    public List<AllKinds> getAllKind() {
+        return getAllKinds();
+    }
+
+    //获得分类中的第二层，通过第一层的id
+    @RequestMapping(value = "/getClassification.do", method = RequestMethod.POST)
+    @ResponseBody
+    public List<Classification> getClassificationByAid(@RequestParam int id) {
+        return selectAllClassification(id);
+    }
+
+    //通过第二层的id获取对应的第三层
+    @RequestMapping(value = "/getSpecific.do")
+    @ResponseBody
+    public List<Specific> getSpecificByCid(@RequestParam int id) {
+        return selectAllSpecific(id);
+    }
+
+    //get the shops counts
+    @RequestMapping(value = "/getShopsCounts.do")
+    @ResponseBody
+    public Map getShopsCounts() {
+        Map<String, Integer> map = new HashMap<>();
+        int counts = 0;
+        try {
+            counts = shopInformationService.getCounts();
+        } catch (Exception e) {
+            e.printStackTrace();
+            map.put("counts", counts);
+            return map;
+        }
+        map.put("counts", counts);
+        return map;
+    }
+
+    @RequestMapping(value = "/getShops.do")
+    @ResponseBody
+    public List getShops(@RequestParam int start) {
+        List<ShopInformation> list = new ArrayList<>();
+        try {
+            int end = 12;
+            list = selectTen(start, end);
+        } catch (Exception e) {
+            e.printStackTrace();
+            return list;
+        }
+        return list;
+    }
+
+
+    //获取商品，分页,一次性获取end个
+    private List<ShopInformation> selectTen(int start, int end) {
+        Map map = new HashMap();
+        map.put("start", (start - 1) * end);
+        map.put("end", end);
+        List<ShopInformation> list = shopInformationService.selectTen(map);
+        return list;
+    }
+
+    //获取最详细的分类，第三层
+    private Specific selectSpecificBySort(int sort) {
+        return specificeService.selectByPrimaryKey(sort);
+    }
+
+    //获得第二层分类
+    private Classification selectClassificationByCid(int cid) {
+        return classificationService.selectByPrimaryKey(cid);
+    }
+
+    //获得第一层分类
+    private AllKinds selectAllKindsByAid(int aid) {
+        return allKindsService.selectByPrimaryKey(aid);
+    }
+
+    //获得第一层所有
+    private List<AllKinds> getAllKinds() {
+        return allKindsService.selectAll();
+    }
+
+    //根据第一层的id获取该层下的第二层
+    private List<Classification> selectAllClassification(int aid) {
+        return classificationService.selectByAid(aid);
+    }
+
+    //根据第二层的id获取其对应的第三层所有id
+    private List<Specific> selectAllSpecific(int cid) {
+        return specificeService.selectByCid(cid);
+    }
+
+    //获得商品总页数
+    private int getShopCounts() {
+        return shopInformationService.getCounts();
+    }
+
+    //获得商品留言总页数
+    private int getShopContextCounts(int sid) {
+        return shopContextService.getCounts(sid);
+    }
+
+    //获得商品留言，10条
+    private List<ShopContext> selectShopContextBySid(int sid, int start) {
+        return shopContextService.findById(sid, (start - 1) * 10);
+    }
+}