首页后台开发
Dao层的实现
- 新建一个HeadLineDao接口
public interface HeadLineDao {
/**
* 根据传入的条件查询
* @param headLineCondition
* @return
*/
List queryHeadLine(@Param("headLineCondition") HeadLine headLineCondition);
}
- mapper
- 测试
发现数据哭着少了一列
ALTER TABLE tb_head_line ADD COLUMN line_img varchar(1000) DEFAULT NULL;
测试单元
@Test
public void testQueryArea() {
HeadLine headLineCondition = new HeadLine();
List headLineList = headLineDao.queryHeadLine(headLineCondition);
System.out.println(headLineList.size());
}
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ShopCategoryDao的改造
- 支持 parent_Id为空的情况，返回一级level
- 测试
@Test
public void testBQueryShopCategory() throws Exception {
List shopCategoryList = shopCategoryDao.queryShopCategory(null);
System.out.println(shopCategoryList.size());
}
-
测试结果
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Service层实现
- 接口
public interface HeadLineService {
/**
* 根据传入的条件返回指定的头条列表
* @param headLineCondition
* @return
* @throws IOException
*/
List getHeadLineList(HeadLine headLineCondition) throws IOException;
}
- 实现类
@Service
public class getHeadLineList implements HeadLineService{
@Autowired
private HeadLineDao headLineDao;
@Override
public List getHeadLineList(HeadLine headLineCondition) throws IOException {
List headLineList = headLineDao.queryHeadLine(headLineCondition);
return headLineList;
}
}
Controller层的实现
- 新建在web下frontend包，新建MainPageController类
@Controller
@RequestMapping("/frontend")
public class MainPageController {
@Autowired
private ShopCategoryService shopCategoryService;
@Autowired
private HeadLineService headLineService;
/**
* 初始化前端展示的系统的主页信息 包括获取一级店铺类别列表一级头条
* @return
*/
@RequestMapping(value = "/listmainpageinfo", method = RequestMethod.GET)
@ResponseBody
private Map listMainPageInfo() {
Map modelMap = new HashMap<>();
List shopCategoryList = new ArrayList<>();
try {
// 获取一级店铺列表(即parentId为空的ShopCategory)
shopCategoryList = shopCategoryService.getShopCategoryList(null);
modelMap.put("shopCategoryList", shopCategoryList);
} catch (Exception e) {
modelMap.put("success", false);
modelMap.put("errMsg", e.getMessage());
return modelMap;
}
List headLineList = new ArrayList<>();
try {
// 获取状态为1(可用的头条列表)
HeadLine headLineCondition = new HeadLine();
headLineCondition.setEnableStatus(1);
headLineList = headLineService.getHeadLineList(headLineCondition);
modelMap.put("headLineList", headLineList);
} catch (Exception e) {
modelMap.put("success", false);
modelMap.put("errMsg", e.getMessage());
return modelMap;
}
modelMap.put("success", true);
return modelMap;
}
}
-
测试
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前端页面展示
- 新建FrontendAdminControlle控制类
@Controller
@RequestMapping("/frontend")
public class FrontendAdminController {
@RequestMapping(value = "index", method = RequestMethod.GET)
private String index() {
return "frontend/index";
}
}
- 测试
注意静态文件的路径
如果图片不放在静态资源里的话，也可以通过tomcat解析路径
https://www.cnblogs.com/magic101/p/7756402.html
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店铺列表
Dao层的实现
- 增加通过parent_id查询
同理count中也要增加
AND s.shop_category_id IN (
SELECT
shop_category_id
FROM
tb_shop_category
WHERE
parent_id = #{shopCondition.shopCategory.parent.shopCategoryId}
)
Controller层的实现
- ShopListController
@Controller
@RequestMapping(value ="/frontend")
public class ShopListController {
@Autowired
ShopCategoryService shopCategoryService;
@Autowired
AreaService areaService;
@Autowired
ShopService shopService;
@RequestMapping(value = "/listshoppageinfo", method = RequestMethod.GET)
@ResponseBody
private Map listShopPageInfo(HttpServletRequest request) {
Map modelMap = new HashMap<>();
// 试着从前端获取parentId
long parentId = HttpServletRequestUtil.getLong(request, "parent");
List shopCategoryList = null;
if (parentId != -1) {
try {
ShopCategory shopCategoryCondition = new ShopCategory();
ShopCategory parent = new ShopCategory();
parent.setShopCategoryId(parentId);
shopCategoryCondition.setParent(parent);
shopCategoryList = shopCategoryService.getShopCategoryList(shopCategoryCondition);
} catch (Exception e) {
modelMap.put("success", false);
modelMap.put("errMsg", e.getMessage());
}
} else {
try {
// 如果parentId不存在 则取出所有一级ShopCategory
shopCategoryList = shopCategoryService.getShopCategoryList(null);
} catch (Exception e) {
modelMap.put("success", false);
modelMap.put("errMsg", e.getMessage());
}
}
modelMap.put("shopCategoryList", shopCategoryList);
List areaList = null;
try {
// 获取区域列表信息
areaList = areaService.getAreaList();
modelMap.put("areaList", areaList);
modelMap.put("success", true);
} catch (Exception e) {
modelMap.put("success", false);
modelMap.put("errMsg", e.getMessage());
}
return modelMap;
}
@RequestMapping(value = "/listshops", method = RequestMethod.GET)
@ResponseBody
private Map listShops(HttpServletRequest request) {
Map modelMap = new HashMap();
int pageIndex = HttpServletRequestUtil.getInt(request, "pageIndex");
int pageSize = HttpServletRequestUtil.getInt(request, "pageSize");
if ((pageIndex > -1) && (pageSize > -1)) {
long parentId = HttpServletRequestUtil.getLong(request, "parentId");
long shopCategoryId = HttpServletRequestUtil.getLong(request,
"shopCategoryId");
int areaId = HttpServletRequestUtil.getInt(request, "areaId");
String shopName = HttpServletRequestUtil.getString(request,
"shopName");
Shop shopCondition = compactShopCondition4Search(parentId,
shopCategoryId, areaId, shopName);
ShopExecution se = shopService.getShopList(shopCondition,
pageIndex, pageSize);
modelMap.put("shopList", se.getShopList());
modelMap.put("count", se.getCount());
modelMap.put("success", true);
} else {
modelMap.put("success", false);
modelMap.put("errMsg", "empty pageSize or pageIndex");
}
return modelMap;
}
private Shop compactShopCondition4Search(long parentId,
long shopCategoryId, int areaId, String shopName) {
Shop shopCondition = new Shop();
if (parentId != -1L) {
ShopCategory parentCategory = new ShopCategory();
parentCategory.setShopCategoryId(parentId);
// TODO
// shopCondition.setParentCategory(parentCategory);
}
if (shopCategoryId != -1L) {
ShopCategory shopCategory = new ShopCategory();
shopCategory.setShopCategoryId(shopCategoryId);
shopCondition.setShopCategory(shopCategory);
}
if (areaId != -1L) {
Area area = new Area();
area.setAreaId(areaId);
shopCondition.setArea(area);
}
if (shopName != null) {
shopCondition.setShopName(shopName);
}
shopCondition.setEnableStatus(1);
return shopCondition;
}
}
-测试
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返回页面
- 在FrontendAdminController中添加一个返回的页面
@RequestMapping(value = "shoplist", method = RequestMethod.GET)
private String shopList() {
return "frontend/shoplist";
} -
测试
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店铺详情页面
Controller层
- 返回shopdetail页面
@RequestMapping(value = "shopdetail", method = RequestMethod.GET)
private String shopDetail() {
return "frontend/shopdetail";
}
- 新建一个ShopDetailController类
@Controller
@RequestMapping("/frontend")
public class ShopDetailController {
@Autowired
private ShopService shopService;
@Autowired
private ProductService productService;
@Autowired
private ProductCategoryService productCategoryService;
/**
* 获取店铺信息以及该店铺下的商品列别列表
* @param request
* @return
*/
@RequestMapping(value = "/listshopdetailpageinfo", method = RequestMethod.GET)
@ResponseBody
private Map listShopDetailPageInfo(HttpServletRequest request) {
Map modelMap = new HashMap<>();
// 获取前台传过来的shopId
long shopId = HttpServletRequestUtil.getLong(request, "shopId");
Shop shop = null;
List productCategoryList = null;
if (shopId != -1) {
// 获取店铺Id为shopId的店铺
shop = shopService.getByShopId(shopId);
// 获取店铺下面的商品类别列表
productCategoryList = productCategoryService.getProductCategroyList(shopId);
modelMap.put("shop", shop);
modelMap.put("productCategoryList", productCategoryList);
modelMap.put("success", true);
} else {
modelMap.put("success", false);
modelMap.put("errMsg", "empty shopId");
}
return modelMap;
}
@RequestMapping(value = "/listproductsbyshop", method = RequestMethod.GET)
@ResponseBody
private Map listProductByShop(HttpServletRequest request) {
Map modelMap = new HashMap<>();
// 获取页码
int pageIndex = HttpServletRequestUtil.getInt(request, "pageIndex");
// 获取一页需要的显示条数
int pageSize = HttpServletRequestUtil.getInt(request, "pageSize");
// 获取店铺Id
long shopId = HttpServletRequestUtil.getLong(request, "shopId");
// 空值判断
if ((pageSize > -1) && (pageIndex > -1) && (shopId > -1)) {
long productCategoryId = HttpServletRequestUtil.getLong(request,
"productCategoryId");
String productName = HttpServletRequestUtil.getString(request,
"productName");
Product productCondition = compactProductCondition4Search(shopId,
productCategoryId, productName);
ProductExecution pe = productService.getProductList(
productCondition, pageIndex, pageSize);
modelMap.put("productList", pe.getProductList());
modelMap.put("count", pe.getCount());
modelMap.put("success", true);
} else {
modelMap.put("success", false);
modelMap.put("errMsg", "empty pageSize or pageIndex or shopId");
}
return modelMap;
}
private Product compactProductCondition4Search(long shopId,
long productCategoryId, String productName) {
Product productCondition = new Product();
Shop shop = new Shop();
shop.setShopId(shopId);
productCondition.setShop(shop);
if (productCategoryId != -1L) {
ProductCategory productCategory = new ProductCategory();
productCategory.setProductCategoryId(productCategoryId);
productCondition.setProductCategory(productCategory);
}
if (productName != null) {
productCondition.setProductName(productName);
}
productCondition.setEnableStatus(1);
return productCondition;
}
}
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