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添加计算购物车优惠的功能

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zhh 2018-08-27 17:30:33 +08:00
parent abfb6c13e6
commit 5790bb6480
10 changed files with 500 additions and 2 deletions
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22
mall-portal/src/main/java/com/macro/mall/portal/controller/OmsCartItemController.java
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@ -2,6 +2,7 @@ package com.macro.mall.portal.controller;
import com.macro.mall.model.OmsCartItem;
import com.macro.mall.portal.domain.CartProduct;
import com.macro.mall.portal.domain.CartPromotionItem;
import com.macro.mall.portal.domain.CommonResult;
import com.macro.mall.portal.service.OmsCartItemService;
import com.macro.mall.portal.service.UmsMemberService;
@ -30,7 +31,6 @@ public class OmsCartItemController {
@RequestMapping(value = "/add", method = RequestMethod.POST)
@ResponseBody
public Object add(@RequestBody OmsCartItem cartItem) {
cartItem.setMemberId(memberService.getCurrentMember().getId());
int count = cartItemService.add(cartItem);
if (count > 0) {
return new CommonResult().success(count);
@ -46,6 +46,14 @@ public class OmsCartItemController {
return new CommonResult().success(cartItemList);
}
@ApiOperation("获取某个会员的购物车列表,包括促销信息")
@RequestMapping(value = "/list/promotion", method = RequestMethod.GET)
@ResponseBody
public Object listPromotion() {
List<CartPromotionItem> cartPromotionItemList = cartItemService.listPromotion(memberService.getCurrentMember().getId());
return new CommonResult().success(cartPromotionItemList);
}
@ApiOperation("修改购物车中某个商品的数量")
@RequestMapping(value = "/update/quantity", method = RequestMethod.GET)
@ResponseBody
@ -70,7 +78,6 @@ public class OmsCartItemController {
@RequestMapping(value = "/update/attr", method = RequestMethod.POST)
@ResponseBody
public Object updateAttr(@RequestBody OmsCartItem cartItem) {
cartItem.setMemberId(memberService.getCurrentMember().getId());
int count = cartItemService.updateAttr(cartItem);
if (count > 0) {
return new CommonResult().success(count);
@ -88,4 +95,15 @@ public class OmsCartItemController {
}
return new CommonResult().failed();
}
@ApiOperation("清空购物车")
@RequestMapping(value = "/clear", method = RequestMethod.POST)
@ResponseBody
public Object clear() {
int count = cartItemService.clear(memberService.getCurrentMember().getId());
if (count > 0) {
return new CommonResult().success(count);
}
return new CommonResult().failed();
}
}

4
mall-portal/src/main/java/com/macro/mall/portal/dao/PortalProductDao.java
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@ -1,12 +1,16 @@
package com.macro.mall.portal.dao;
import com.macro.mall.portal.domain.CartProduct;
import com.macro.mall.portal.domain.PromotionProduct;
import org.apache.ibatis.annotations.Param;
import java.util.List;
/**
* 前台系统自定义商品Dao
* Created by macro on 2018/8/2.
*/
public interface PortalProductDao {
CartProduct getCartProduct(@Param("id") Long id);
List<PromotionProduct> getPromotionProductList(@Param("ids") List<Long> ids);
}

41
mall-portal/src/main/java/com/macro/mall/portal/domain/CartPromotionItem.java Normal file
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@ -0,0 +1,41 @@
package com.macro.mall.portal.domain;
import com.macro.mall.model.OmsCartItem;
import java.math.BigDecimal;
/**
* Created by macro on 2018/8/27.
* 购物车中促销信息的封装
*/
public class CartPromotionItem {
private OmsCartItem cartItem;
//促销活动信息
private String promotionMessage;
//促销活动减去的金额，针对每个商品
private BigDecimal reduceAmount;
public OmsCartItem getCartItem() {
return cartItem;
}
public void setCartItem(OmsCartItem cartItem) {
this.cartItem = cartItem;
}
public String getPromotionMessage() {
return promotionMessage;
}
public void setPromotionMessage(String promotionMessage) {
this.promotionMessage = promotionMessage;
}
public BigDecimal getReduceAmount() {
return reduceAmount;
}
public void setReduceAmount(BigDecimal reduceAmount) {
this.reduceAmount = reduceAmount;
}
}

45
mall-portal/src/main/java/com/macro/mall/portal/domain/PromotionProduct.java Normal file
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@ -0,0 +1,45 @@
package com.macro.mall.portal.domain;
import com.macro.mall.model.PmsProduct;
import com.macro.mall.model.PmsProductFullReduction;
import com.macro.mall.model.PmsProductLadder;
import com.macro.mall.model.PmsSkuStock;
import java.util.List;
/**
* Created by macro on 2018/8/27.
* 商品的促销信息，包括sku、打折优惠、满减优惠
*/
public class PromotionProduct extends PmsProduct {
//商品库存信息
private List<PmsSkuStock> skuStockList;
//商品打折信息
private List<PmsProductLadder> productLadderList;
//商品满减信息
private List<PmsProductFullReduction> productFullReductionList;
public List<PmsSkuStock> getSkuStockList() {
return skuStockList;
}
public void setSkuStockList(List<PmsSkuStock> skuStockList) {
this.skuStockList = skuStockList;
}
public List<PmsProductLadder> getProductLadderList() {
return productLadderList;
}
public void setProductLadderList(List<PmsProductLadder> productLadderList) {
this.productLadderList = productLadderList;
}
public List<PmsProductFullReduction> getProductFullReductionList() {
return productFullReductionList;
}
public void setProductFullReductionList(List<PmsProductFullReduction> productFullReductionList) {
this.productFullReductionList = productFullReductionList;
}
}

11
mall-portal/src/main/java/com/macro/mall/portal/service/OmsCartItemService.java
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@ -2,6 +2,7 @@ package com.macro.mall.portal.service;
import com.macro.mall.model.OmsCartItem;
import com.macro.mall.portal.domain.CartProduct;
import com.macro.mall.portal.domain.CartPromotionItem;
import org.springframework.transaction.annotation.Transactional;
import java.util.List;
@ -22,6 +23,11 @@ public interface OmsCartItemService {
*/
List<OmsCartItem> list(Long memberId);
/**
* 获取包含促销活动信息的购物车列表
*/
List<CartPromotionItem> listPromotion(Long memberId);
/**
* 修改某个购物车商品的数量
*/
@ -42,4 +48,9 @@ public interface OmsCartItemService {
*/
@Transactional
int updateAttr(OmsCartItem cartItem);
/**
* 清空购物车
*/
int clear(Long memberId);
}

18
mall-portal/src/main/java/com/macro/mall/portal/service/OmsPromotionService.java Normal file
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@ -0,0 +1,18 @@
package com.macro.mall.portal.service;
import com.macro.mall.model.OmsCartItem;
import com.macro.mall.portal.domain.CartPromotionItem;
import java.util.List;
/**
* Created by macro on 2018/8/27.
* 促销管理Service
*/
public interface OmsPromotionService {
/**
* 计算购物车中的促销活动信息
* @param cartItemList 购物车
*/
List<CartPromotionItem> calcCartPromotion(List<OmsCartItem> cartItemList);
}

31
mall-portal/src/main/java/com/macro/mall/portal/service/impl/OmsCartItemServiceImpl.java
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@ -3,14 +3,19 @@ package com.macro.mall.portal.service.impl;
import com.macro.mall.mapper.OmsCartItemMapper;
import com.macro.mall.model.OmsCartItem;
import com.macro.mall.model.OmsCartItemExample;
import com.macro.mall.model.UmsMember;
import com.macro.mall.portal.dao.PortalProductDao;
import com.macro.mall.portal.domain.CartProduct;
import com.macro.mall.portal.domain.CartPromotionItem;
import com.macro.mall.portal.service.OmsCartItemService;
import com.macro.mall.portal.service.OmsPromotionService;
import com.macro.mall.portal.service.UmsMemberService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.CollectionUtils;
import org.springframework.util.StringUtils;
import java.util.Date;
import java.util.List;
/**
@ -23,14 +28,24 @@ public class OmsCartItemServiceImpl implements OmsCartItemService {
private OmsCartItemMapper cartItemMapper;
@Autowired
private PortalProductDao productDao;
@Autowired
private OmsPromotionService promotionService;
@Autowired
private UmsMemberService memberService;
@Override
public int add(OmsCartItem cartItem) {
int count;
UmsMember currentMember =memberService.getCurrentMember();
cartItem.setMemberId(currentMember.getId());
cartItem.setMemberNickname(currentMember.getNickname());
cartItem.setDeleteStatus(0);
OmsCartItem existCartItem = getCartItem(cartItem);
if (existCartItem == null) {
cartItem.setCreateDate(new Date());
count = cartItemMapper.insert(cartItem);
} else {
cartItem.setModifyDate(new Date());
existCartItem.setQuantity(existCartItem.getQuantity() + cartItem.getQuantity());
count = cartItemMapper.updateByPrimaryKey(existCartItem);
}
@ -67,6 +82,12 @@ public class OmsCartItemServiceImpl implements OmsCartItemService {
return cartItemMapper.selectByExample(example);
}
@Override
public List<CartPromotionItem> listPromotion(Long memberId) {
List<OmsCartItem> cartItemList = list(memberId);
return promotionService.calcCartPromotion(cartItemList);
}
@Override
public int updateQuantity(Long id, Long memberId, Integer quantity) {
OmsCartItem cartItem = new OmsCartItem();
@ -96,10 +117,20 @@ public class OmsCartItemServiceImpl implements OmsCartItemService {
//删除原购物车信息
OmsCartItem updateCart = new OmsCartItem();
updateCart.setId(cartItem.getId());
updateCart.setModifyDate(new Date());
updateCart.setDeleteStatus(1);
cartItemMapper.updateByPrimaryKeySelective(updateCart);
cartItem.setId(null);
add(cartItem);
return 1;
}
@Override
public int clear(Long memberId) {
OmsCartItem record = new OmsCartItem();
record.setDeleteStatus(1);
OmsCartItemExample example = new OmsCartItemExample();
example.createCriteria().andMemberIdEqualTo(memberId);
return cartItemMapper.updateByExampleSelective(record,example);
}
}

261
mall-portal/src/main/java/com/macro/mall/portal/service/impl/OmsPromotionServiceImpl.java Normal file
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@ -0,0 +1,261 @@
package com.macro.mall.portal.service.impl;
import com.macro.mall.model.OmsCartItem;
import com.macro.mall.model.PmsProductFullReduction;
import com.macro.mall.model.PmsProductLadder;
import com.macro.mall.model.PmsSkuStock;
import com.macro.mall.portal.dao.PortalProductDao;
import com.macro.mall.portal.domain.CartPromotionItem;
import com.macro.mall.portal.domain.PromotionProduct;
import com.macro.mall.portal.service.OmsPromotionService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.math.BigDecimal;
import java.util.*;
/**
* Created by macro on 2018/8/27.
* 促销管理Service实现类
*/
@Service
public class OmsPromotionServiceImpl implements OmsPromotionService {
@Autowired
private PortalProductDao portalProductDao;
@Override
public List<CartPromotionItem> calcCartPromotion(List<OmsCartItem> cartItemList) {
//1.先根据productId对CartItem进行分组，以spu为单位进行计算优惠
Map<Long, List<OmsCartItem>> productCartMap = groupCartItemBySpu(cartItemList);
//2.查询所有商品的优惠相关信息
List<PromotionProduct> promotionProductList = getPromotionProductList(cartItemList);
//3.根据商品促销类型计算商品促销优惠价格
List<CartPromotionItem> cartPromotionItemList = new ArrayList<>();
for (Map.Entry<Long, List<OmsCartItem>> entry : productCartMap.entrySet()) {
Long productId = entry.getKey();
PromotionProduct promotionProduct = getPromotionProductById(productId, promotionProductList);
List<OmsCartItem> itemList = entry.getValue();
Integer promotionType = promotionProduct.getPromotionType();
if (promotionType == 1) {
//单品促销
for (OmsCartItem item : itemList) {
CartPromotionItem cartPromotionItem = new CartPromotionItem();
cartPromotionItem.setCartItem(item);
cartPromotionItem.setPromotionMessage("单品促销");
//商品原价-促销价
cartPromotionItem.setReduceAmount(getOriginalPrice(promotionProduct, item.getProductSkuId()).subtract(getSinglePromotionPrice(promotionProduct, item.getProductSkuId())));
cartPromotionItemList.add(cartPromotionItem);
}
} else if (promotionType == 3) {
//打折优惠
int count = getCartItemCount(itemList);
PmsProductLadder ladder = getProductLadder(count, promotionProduct.getProductLadderList());
if(ladder!=null){
for (OmsCartItem item : itemList) {
CartPromotionItem cartPromotionItem = new CartPromotionItem();
cartPromotionItem.setCartItem(item);
String message = getLadderPromotionMessage(ladder);
cartPromotionItem.setPromotionMessage(message);
//商品原价-折扣金额*商品原价
BigDecimal originalPrice = getOriginalPrice(promotionProduct, item.getProductSkuId());
BigDecimal reduceAmount = originalPrice.subtract(ladder.getDiscount().multiply(originalPrice));
cartPromotionItem.setReduceAmount(reduceAmount);
cartPromotionItemList.add(cartPromotionItem);
}
}else{
handleNoReduce(cartPromotionItemList,itemList);
}
} else if (promotionType == 4) {
//满减
BigDecimal totalAmount= getCartItemAmount(itemList,promotionProductList);
PmsProductFullReduction fullReduction = getProductFullReduction(totalAmount,promotionProduct.getProductFullReductionList());
if(fullReduction!=null){
for (OmsCartItem item : itemList) {
CartPromotionItem cartPromotionItem = new CartPromotionItem();
cartPromotionItem.setCartItem(item);
String message = getFullReductionPromotionMessage(fullReduction);
cartPromotionItem.setPromotionMessage(message);
//(商品原价/总价)*满减金额
BigDecimal reduceAmount = (getOriginalPrice(promotionProduct,item.getProductSkuId()).divide(totalAmount)).multiply(fullReduction.getReducePrice());
cartPromotionItem.setReduceAmount(reduceAmount);
cartPromotionItemList.add(cartPromotionItem);
}
}else{
handleNoReduce(cartPromotionItemList,itemList);
}
} else {
//无优惠
handleNoReduce(cartPromotionItemList, itemList);
}
}
return cartPromotionItemList;
}
/**
* 查询所有商品的优惠相关信息
*/
private List<PromotionProduct> getPromotionProductList(List<OmsCartItem> cartItemList) {
List<Long> productIdList = new ArrayList<>();
for(OmsCartItem cartItem:cartItemList){
productIdList.add(cartItem.getProductId());
}
return portalProductDao.getPromotionProductList(productIdList);
}
/**
* 以spu为单位对购物车中商品进行分组
*/
private Map<Long, List<OmsCartItem>> groupCartItemBySpu(List<OmsCartItem> cartItemList) {
Map<Long, List<OmsCartItem>> productCartMap = new TreeMap<>();
for (OmsCartItem cartItem : cartItemList) {
List<OmsCartItem> productCartItemList = productCartMap.get(cartItem.getId());
if (productCartItemList == null) {
productCartItemList = new ArrayList<>();
productCartItemList.add(cartItem);
productCartMap.put(cartItem.getProductId(), productCartItemList);
} else {
productCartItemList.add(cartItem);
}
}
return productCartMap;
}
/**
* 获取满减促销消息
*/
private String getFullReductionPromotionMessage(PmsProductFullReduction fullReduction) {
StringBuilder sb = new StringBuilder();
sb.append("满减优惠：");
sb.append("满");
sb.append(fullReduction.getFullPrice());
sb.append("元，");
sb.append("减");
sb.append(fullReduction.getReducePrice());
sb.append("元");
return sb.toString();
}
/**
* 对没满足优惠条件的商品进行处理
*/
private void handleNoReduce(List<CartPromotionItem> cartPromotionItemList, List<OmsCartItem> itemList) {
for (OmsCartItem item : itemList) {
CartPromotionItem cartPromotionItem = new CartPromotionItem();
cartPromotionItem.setCartItem(item);
cartPromotionItem.setPromotionMessage("无优惠");
cartPromotionItem.setReduceAmount(new BigDecimal(0));
cartPromotionItemList.add(cartPromotionItem);
}
}
private PmsProductFullReduction getProductFullReduction(BigDecimal totalAmount,List<PmsProductFullReduction> fullReductionList) {
//按条件从高到低排序
fullReductionList.sort(new Comparator<PmsProductFullReduction>() {
@Override
public int compare(PmsProductFullReduction o1, PmsProductFullReduction o2) {
return o2.getFullPrice().subtract(o1.getFullPrice()).intValue();
}
});
for(PmsProductFullReduction fullReduction:fullReductionList){
if(totalAmount.subtract(fullReduction.getFullPrice()).intValue()>=0){
return fullReduction;
}
}
return null;
}
/**
* 获取打折优惠的促销信息
*/
private String getLadderPromotionMessage(PmsProductLadder ladder) {
StringBuilder sb = new StringBuilder();
sb.append("打折优惠：");
sb.append("满");
sb.append(ladder.getCount());
sb.append("件，");
sb.append("打");
sb.append(ladder.getDiscount().multiply(new BigDecimal(10)));
sb.append("折");
return sb.toString();
}
/**
* 根据购买商品数量获取满足条件的打折优惠策略
*/
private PmsProductLadder getProductLadder(int count, List<PmsProductLadder> productLadderList) {
//按数量从大到小排序
productLadderList.sort(new Comparator<PmsProductLadder>() {
@Override
public int compare(PmsProductLadder o1, PmsProductLadder o2) {
return o2.getCount() - o1.getCount();
}
});
for (PmsProductLadder productLadder : productLadderList) {
if (count >= productLadder.getCount()) {
return productLadder;
}
}
return null;
}
/**
* 获取购物车中指定商品的数量
*/
private int getCartItemCount(List<OmsCartItem> itemList) {
int count = 0;
for (OmsCartItem item : itemList) {
count += item.getQuantity();
}
return count;
}
/**
* 获取购物车中指定商品的总价
*/
private BigDecimal getCartItemAmount(List<OmsCartItem> itemList, List<PromotionProduct> promotionProductList) {
BigDecimal amount = new BigDecimal(0);
for (OmsCartItem item : itemList) {
//计算出商品原价
PromotionProduct promotionProduct = getPromotionProductById(item.getProductId(), promotionProductList);
BigDecimal price = getOriginalPrice(promotionProduct,item.getProductSkuId());
amount = amount.add(price.multiply(new BigDecimal(item.getQuantity())));
}
return amount;
}
/**
* 获取商品的单品促销价格
*/
private BigDecimal getSinglePromotionPrice(PromotionProduct promotionProduct, Long productSkuId) {
for (PmsSkuStock skuStock : promotionProduct.getSkuStockList()) {
if (productSkuId == skuStock.getId()) {
return skuStock.getPromotionPrice();
}
}
return null;
}
/**
* 获取商品的原价
*/
private BigDecimal getOriginalPrice(PromotionProduct promotionProduct, Long productSkuId) {
for (PmsSkuStock skuStock : promotionProduct.getSkuStockList()) {
if (productSkuId.equals(skuStock.getId())) {
return skuStock.getPrice();
}
}
return null;
}
/**
* 根据商品id获取商品的促销信息
*/
private PromotionProduct getPromotionProductById(Long productId, List<PromotionProduct> promotionProductList) {
for (PromotionProduct promotionProduct : promotionProductList) {
if (productId.equals(promotionProduct.getId())) {
return promotionProduct;
}
}
return null;
}
}

35
mall-portal/src/main/resources/dao/PortalProductDao.xml
View File

@ -8,6 +8,15 @@
<collection property="skuStockList" columnPrefix="sku_" resultMap="com.macro.mall.mapper.PmsSkuStockMapper.BaseResultMap">
</collection>
</resultMap>
<resultMap id="promotionProductMap" type="com.macro.mall.portal.domain.PromotionProduct" extends="com.macro.mall.mapper.PmsProductMapper.BaseResultMap">
<id column="id" jdbcType="BIGINT" property="id" />
<collection property="skuStockList" columnPrefix="sku_" resultMap="com.macro.mall.mapper.PmsSkuStockMapper.BaseResultMap">
</collection>
<collection property="productLadderList" columnPrefix="ladder_" resultMap="com.macro.mall.mapper.PmsProductLadderMapper.BaseResultMap">
</collection>
<collection property="productFullReductionList" columnPrefix="full_" resultMap="com.macro.mall.mapper.PmsProductFullReductionMapper.BaseResultMap">
</collection>
</resultMap>
<select id="getCartProduct" resultMap="cartProductMap">
SELECT
p.id id,
@ -36,4 +45,30 @@
AND pa.type = 0
ORDER BY pa.sort desc
</select>
<select id="getPromotionProductList" resultMap="promotionProductMap">
SELECT
p.id,
p.`name`,
p.promotion_type,
sku.id sku_id,
sku.price sku_price,
sku.sku_code sku_sku_code,
sku.promotion_price sku_promotion_price,
ladder.id ladder_id,
ladder.count ladder_count,
ladder.discount ladder_discount,
full_re.id full_id,
full_re.full_price full_full_price,
full_re.reduce_price full_reduce_price
FROM
pms_product p
LEFT JOIN pms_sku_stock sku ON p.id = sku.product_id
LEFT JOIN pms_product_ladder ladder ON p.id = ladder.product_id
LEFT JOIN pms_product_full_reduction full_re ON p.id = full_re.product_id
WHERE
p.id IN
<foreach collection="ids" open="(" close=")" item="id" separator=",">
#{id}
</foreach>
</select>
</mapper>

34
mall-portal/src/test/java/com/macro/mall/portal/PortalProductDaoTests.java Normal file
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@ -0,0 +1,34 @@
package com.macro.mall.portal;
import com.macro.mall.portal.dao.PortalProductDao;
import com.macro.mall.portal.domain.PromotionProduct;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
import java.util.ArrayList;
import java.util.List;
/**
* Created by macro on 2018/8/27.
* 前台商品查询逻辑单元测试
*/
@RunWith(SpringRunner.class)
@SpringBootTest
public class PortalProductDaoTests {
@Autowired
private PortalProductDao portalProductDao;
@Test
public void testGetPromotionProductList(){
List<Long> ids = new ArrayList<>();
ids.add(26L);
ids.add(27L);
ids.add(28L);
ids.add(29L);
List<PromotionProduct> promotionProductList = portalProductDao.getPromotionProductList(ids);
Assert.assertEquals(4,promotionProductList.size());
}
}