目录
1、环境准备
1.1、业务流程
1.2、Controller 层编写下单功能接口
1.3、订单提交的模型类
1.4、前端页面 confirm.html 提供数据
2、提交订单业务完整代码
3、原子性验令牌:令牌的对比和删除保证原子性
4、初始化新订单,包含订单、订单项等信息
4.1、抽取订单创建传输类
4.2、service
4.3、创建订单
4.3.1、远程调用仓库服务,计算运费和详细地址的接口
4.3.2、封装运费模型类
4.3.3、创建订单service
4.4、构造订单项数据
4.4.1、构建订单项数据service
4.4.2、【商品模块】通过skuId查询spu信息
4.4.3、订单服务远程调用商品服务
4.4.4、抽取商品信息vo
4.5、计算价格
5、锁定库存
5.1、保存订单数据并锁定库存
5.1.1、service保存订单数据并锁定库存
5.1.2、【公共模块】无库存异常类
5.2、【仓库模块】锁定库存
5.2.1、订单服务远程调用仓库服务
5.2.2、锁定库存controller
5.2.3、锁定库存的vo类
5.2.4、锁定指定订单的库存service
5.2.5、dao,根据sku_id查询在有库存的仓库
5.2.6、【公共模块】错误码枚举类添加库存相关错误码
6、前端页面的修改
7、提交订单的完整代码
7.1、Controller层接口编写
7.2、Service层代码
7.2.1、提交订单业务
7.2.2、创建订单、构建订单、计算价格等调用的方法
订单服务 com.atguigu.gulimall.order.web
路径下的 OrderWebController 类,代码如下
/**
* 下单功能
* @param vo
* @return
*/
@PostMapping("/submitOrder")
public String submitOrder(OrderSubmitVo vo, Model model, RedirectAttributes redirectAttributes){
// 1、创建订单、验令牌、验价格、验库存
try {
SubmitOrderResponseVo responseVo = orderService.submitOrder(vo);
if (responseVo.getCode() == 0) {
// 下单成功来到支付选择页
model.addAttribute("submitOrderResp",responseVo);
return "pay";
} else {
// 下单失败回到订单确认页重新确认订单信息
String msg = "下单失败: ";
switch ( responseVo.getCode()){
case 1: msg+="订单信息过期,请刷新再次提交";break;
case 2: msg+="订单商品价格发生变化,请确认后再次提交";break;
case 3: msg+="商品库存不足";break;
}
redirectAttributes.addAttribute("msg",msg);
return "redirect:http://order.gulimall.cn/toTrade";
}
} catch (Exception e){
if (e instanceof NoStockException) {
String message = e.getMessage();
redirectAttributes.addFlashAttribute("msg", message);
}
return "redirect:http://order.gulimall.cn/toTrade";
}
}
页面提交数据 添加“com.atguigu.gulimall.order.vo.OrderSubmitVo”类,代码如下:
@Data
@ToString
public class OrderSubmitVo {
/**
* 收货地址Id
*/
private Long addrId;
/**
* 支付方式
*/
private Integer payType;
// 无需提交需要购买的商品,去购物车再获取一遍
// 优惠发票
/**
* 防重令牌
*/
private String orderToken;
/**
* 应付价格,验价
*/
private BigDecimal payPrice;
/**
* 订单备注
*/
private String note;
/**
* 用户相关信息,直接去Session取出登录的用户
*/
}
function getFare(addrId) {
// 给表单回填的地址
$("#addrIdInput").val(addrId);
$.get("http://gulimall.cn/api/ware/wareinfo/fare?addrId="+addrId,function (resp) {
console.log(resp);
$("#fareEle").text(resp.data.fare);
var total = [[${orderConfirmData.total}]]
// 设置运费信息
var pryPrice = total*1 + resp.data.fare*1;
$("#payPriceEle").text(pryPrice);
$("#payPriceInput").val(pryPrice);
// 设置收货人信息
$("#reciveAddressEle").text(resp.data.address.province+" " + resp.data.address.region+ "" + resp.data.address.detailAddress);
$("#reveiverEle").text(resp.data.address.name);
})
}
/**
* 提交订单
* @param vo
* @return
*/
// @Transactional(isolation = Isolation.READ_COMMITTED) 设置事务的隔离级别
// @Transactional(propagation = Propagation.REQUIRED) 设置事务的传播级别
@Transactional(rollbackFor = Exception.class)
// @GlobalTransactional(rollbackFor = Exception.class)
@Override
public SubmitOrderResponseVo submitOrder(OrderSubmitVo vo) {
confirmVoThreadLocal.set(vo);
SubmitOrderResponseVo responseVo = new SubmitOrderResponseVo();
//去创建、下订单、验令牌、验价格、锁定库存...
//1.从拦截器中获取当前用户登录的信息
MemberResponseVo memberResponseVo = LoginUserInterceptor.loginUser.get();
responseVo.setCode(0);
//2、验证令牌是否合法【令牌的对比和删除必须保证原子性】
String script = "if redis.call('get', KEYS[1]) == ARGV[1] then return redis.call('del', KEYS[1]) else return 0 end";
String orderToken = vo.getOrderToken();
//通过lure脚本原子验证令牌和删除令牌
Long result = redisTemplate.execute(new DefaultRedisScript(script, Long.class),
Arrays.asList(USER_ORDER_TOKEN_PREFIX + memberResponseVo.getId()),
orderToken);
if (result == 0L) {
//令牌验证失败
responseVo.setCode(1);
return responseVo;
} else {
//令牌验证成功
//1、创建订单、订单项等信息
OrderCreateTo order = createOrder();
//2、验证价格
BigDecimal payAmount = order.getOrder().getPayAmount();
BigDecimal payPrice = vo.getPayPrice();
if (Math.abs(payAmount.subtract(payPrice).doubleValue()) < 0.01) {
//金额对比
//TODO 3、保存订单
saveOrder(order);
//4、库存锁定,只要有异常,回滚订单数据
//订单号、所有订单项信息(skuId,skuNum,skuName)
WareSkuLockVo lockVo = new WareSkuLockVo();
lockVo.setOrderSn(order.getOrder().getOrderSn());
//获取出要锁定的商品数据信息
List orderItemVos = order.getOrderItems().stream().map((item) -> {
OrderItemVo orderItemVo = new OrderItemVo();
orderItemVo.setSkuId(item.getSkuId());
orderItemVo.setCount(item.getSkuQuantity());
orderItemVo.setTitle(item.getSkuName());
return orderItemVo;
}).collect(Collectors.toList());
lockVo.setLocks(orderItemVos);
//TODO 调用远程锁定库存的方法
//出现的问题:扣减库存成功了,但是由于网络原因超时,出现异常,导致订单事务回滚,库存事务不回滚(解决方案:seata)
//为了保证高并发,不推荐使用seata,因为是加锁,并行化,提升不了效率,可以发消息给库存服务
R r = wmsFeignService.orderLockStock(lockVo);
if (r.getCode() == 0) {
//锁定成功
responseVo.setOrder(order.getOrder());
// int i = 10/0;
//TODO 订单创建成功,发送消息给MQ
rabbitTemplate.convertAndSend("order-event-exchange","order.create.order",order.getOrder());
//删除购物车里的数据
redisTemplate.delete(CART_PREFIX+memberResponseVo.getId());
return responseVo;
} else {
//锁定失败
String msg = (String) r.get("msg");
throw new NoStockException(msg);
// responseVo.setCode(3);
// return responseVo;
}
} else {
responseVo.setCode(2);
return responseVo;
}
}
}
问题:存在网路延时,同时提交从Redis拿到的令牌一直,导致重复提交
解决:令牌的对比和删除必须保证原子性
1)、封装提交订单数据
package com.atguigu.gulimall.order.vo;
@Data
public class SubmitOrderResponseVo {
private OrderEntity order;
private Integer code; //0成功,错误状态码
}
2)、修改 SubmitOrderResponseVo 类编写验证令牌操作
/**
* 下单操作:验令牌、创建订单、验价格、验库存
* @param vo
* @return
*/
@Override
public SubmitOrderResponseVo submitOrder(OrderSubmitVo vo) {
SubmitOrderResponseVo response = new SubmitOrderResponseVo();
// 从拦截器中拿到当前的用户
MemberRespVo memberRespVo = LoginUserInterceptor.loginUser.get();
// 1、验证令牌【令牌的对比和删除必须保证原子性】,通过使用脚本来完成(0:令牌校验失败; 1: 删除成功)
String script = "if redis.call('get', KEYS[1]) == ARGV[1] then return redis.call('del', KEYS[1]) else return 0 end";
String orderToken = vo.getOrderToken();
// 原子验证令牌和删除令牌
Long result = redisTemplate.execute(new DefaultRedisScript(script, Long.class), Arrays.asList(),
OrderConstant.USER_ORDER_TOKEN_PREFIX + memberRespVo.getId(), orderToken);
if (result == 0L) {
// 令牌验证失败
response.setCode(1);
return response;
} else {
// 令牌验证成功
return response;
}
}
@Data
public class OrderCreateTo {
private OrderEntity order;
private List orderItems;
/** 订单计算的应付价格 **/
private BigDecimal payPrice;
/** 运费 **/
private BigDecimal fare;
}
gulimall-order服务中 com.atguigu.gulimall.order.service.impl
路径下的 OrderServiceImpl 类
/**
* 创建订单、订单项等信息
* @return
*/
private OrderCreateTo createOrder(){
OrderCreateTo createTo = new OrderCreateTo();
// 1、生成一个订单号。IdWorker.getTimeId()是Mybatis提供的生成订单号方法,ID=Time+Id
String orderSn = IdWorker.getTimeId();
// 2、构建一个订单
OrderEntity orderEntity = buildOrder(orderSn);
// 3、获取到所有的订单项
List itemEntities = buildOrderItems(orderSn);
// 4、计算价格、积分等相关信息
computePrice(orderEntity,itemEntities);
createTo.setOrder(orderEntity);
createTo.setOrderItems(itemEntities);
return createTo;
}
package com.atguigu.gulimall.order.feign;
@FeignClient("gulimall-ware")
public interface WareFeignService {
@PostMapping("/ware/waresku/hasstock")
R getSkusHasStock(@RequestBody List skuIds);
/**
* 计算运费和详细地址
* @param addrId
* @return
*/
@GetMapping("/ware/wareinfo/fare")
R getFare(@RequestParam("addrId") Long addrId);
}
package com.atguigu.gulimall.order.vo;
@Data
public class FareVo {
private MemberAddressVo address;
private BigDecimal fare;
}
/**
* 构建订单
* @param orderSn
* @return
*/
private OrderEntity buildOrder(String orderSn) {
MemberRespVo respVp = LoginUserInterceptor.loginUser.get();
OrderEntity entity = new OrderEntity();
entity.setOrderSn(orderSn);
entity.setMemberId(respVp.getId());
OrderSubmitVo orderSubmitVo = confirmVoThreadLocal.get();
// 1、获取运费 和 收货信息
R fare = wareFeignService.getFare(orderSubmitVo.getAddrId());
FareVo fareResp = fare.getData(new TypeReference() {
});
// 2、设置运费
entity.setFreightAmount(fareResp.getFare());
// 3、设置收货人信息
entity.setReceiverPostCode(fareResp.getAddress().getPostCode());
entity.setReceiverProvince(fareResp.getAddress().getProvince());
entity.setReceiverRegion(fareResp.getAddress().getRegion());
entity.setReceiverCity(fareResp.getAddress().getCity());
entity.setReceiverDetailAddress(fareResp.getAddress().getDetailAddress());
entity.setReceiverName(fareResp.getAddress().getName());
entity.setReceiverPhone(fareResp.getAddress().getPhone());
// 4、设置订单的相关状态信息
entity.setStatus(OrderStatusEnum.CREATE_NEW.getCode());
// 5、默认取消信息
entity.setAutoConfirmDay(7);
return entity;
}
OrderServiceImpl 类
/**
* 构建所有订单项数据
* @return
*/
private List buildOrderItems(String orderSn) {
// 最后确定每个购物项的价格
List currentUserCartItems = cartFeignService.getCurrentUserCartItems();
if (currentUserCartItems != null && currentUserCartItems.size()>0){
List itemEntities = currentUserCartItems.stream().map(cartItem -> {
OrderItemEntity itemEntity = buildOrderItem(cartItem);
itemEntity.setOrderSn(orderSn);
return itemEntity;
}).collect(Collectors.toList());
return itemEntities;
}
return null;
}
/**
* 构建某一个订单项
* @param cartItem
* @return
*/
private OrderItemEntity buildOrderItem(OrderItemVo cartItem) {
OrderItemEntity itemEntity = new OrderItemEntity();
// 1、订单信息:订单号 v
// 2、商品的spu信息
Long skuId = cartItem.getSkuId();
R r = productFeignService.getSpuInfoBySkuId(skuId);
SpuInfoVo data = r.getData(new TypeReference() {
});
itemEntity.setSpuId(data.getId());
itemEntity.setSpuBrand(data.getBrandId().toString());
itemEntity.setSpuName(data.getSpuName());
itemEntity.setCategoryId(data.getCatalogId());
// 3、商品的sku信息 v
itemEntity.setSkuId(cartItem.getSkuId());
itemEntity.setSkuName(cartItem.getTitle());
itemEntity.setSkuPic(cartItem.getImage());
itemEntity.setSkuPrice(cartItem.getPrice());
itemEntity.setSkuQuantity(cartItem.getCount());
itemEntity.setSkuAttrsVals(StringUtils.collectionToDelimitedString(cartItem.getSkuAttr(),";"));
// 4、优惠信息【不做】
// 5、积分信息
itemEntity.setGiftGrowth(cartItem.getPrice().multiply(new BigDecimal(cartItem.getCount().toString())).intValue());
itemEntity.setGiftIntegration(cartItem.getPrice().multiply(new BigDecimal(cartItem.getCount().toString())).intValue());
// 6、订单项的价格信息
itemEntity.setPromotionAmount(new BigDecimal("0"));
itemEntity.setCouponAmount(new BigDecimal("0"));
itemEntity.setIntegrationAmount(new BigDecimal("0"));
// 当前订单项的实际金额 总额-各种优惠
BigDecimal orign = itemEntity.getSkuPrice().multiply(new BigDecimal(itemEntity.getSkuQuantity().toString()));
BigDecimal subtract = orign.subtract(itemEntity.getCouponAmount()).
subtract(itemEntity.getCouponAmount()).
subtract(itemEntity.getIntegrationAmount());
itemEntity.setRealAmount(subtract);
return itemEntity;
}
package com.atguigu.gulimall.product.app;
@RestController
@RequestMapping("product/spuinfo")
public class SpuInfoController {
@Autowired
private SpuInfoService spuInfoService;
/**
* 查询指定sku的spu信息
* @param skuId
* @return
*/
@GetMapping("/skuId/{id}")
public R getSpuInfoBySkuId(@PathVariable("id") Long skuId) {
SpuInfoEntity entity = spuInfoService.getSpuInfoBySkuId(skuId);
return R.ok().setData(entity);
}
package com.atguigu.gulimall.product.service.impl;
@Override
public SpuInfoEntity getSpuInfoBySkuId(Long skuId) {
SkuInfoEntity byId = skuInfoService.getById(skuId);
Long spuId = byId.getSpuId();
SpuInfoEntity spuInfoEntity = getById(spuId);
return spuInfoEntity;
}
package com.atguigu.gulimall.order.feign;
@FeignClient("gulimall-product")
public interface ProductFeignService {
@GetMapping("/product/spuinfo/skuId/{id}")
R getSpuInfoBySkuId(@PathVariable("id") Long skuId);
}
package com.atguigu.gulimall.order.vo;
@Data
public class SpuInfoVo {
/**
* 商品id
*/
@TableId
private Long id;
/**
* 商品名称
*/
private String spuName;
/**
* 商品描述
*/
private String spuDescription;
/**
* 所属分类id
*/
private Long catalogId;
/**
* 品牌id
*/
private Long brandId;
/**
*
*/
private BigDecimal weight;
/**
* 上架状态[0 - 新建,1 - 上架,2-下架]
*/
private Integer publishStatus;
/**
*
*/
private Date createTime;
/**
*
*/
private Date updateTime;
}
/**
* 计算价格
* @param orderEntity
* @param itemEntities
*/
private void computePrice(OrderEntity orderEntity, List itemEntities) {
BigDecimal total = new BigDecimal("0.0");
BigDecimal coupon = new BigDecimal("0.0");
BigDecimal integration = new BigDecimal("0.0");
BigDecimal promotion = new BigDecimal("0.0");
BigDecimal gift = new BigDecimal("0.0");
BigDecimal growth = new BigDecimal("0.0");
// 1、订单的总额,叠加每一个订单项的总额信息
for (OrderItemEntity entity : itemEntities) {
total = total.add(entity.getRealAmount());
coupon = coupon.add(entity.getCouponAmount());
integration = integration.add(entity.getIntegrationAmount());
promotion = promotion.add(entity.getPromotionAmount());
gift = gift.add(new BigDecimal(entity.getGiftIntegration()));
growth = growth.add(new BigDecimal(entity.getGiftGrowth()));
}
// 订单总额
orderEntity.setTotalAmount(total);
// 应付总额
orderEntity.setPayAmount(total.add(orderEntity.getFreightAmount()));
orderEntity.setCouponAmount(coupon);
orderEntity.setIntegrationAmount(integration);
orderEntity.setPromotionAmount(promotion);
// 设置积分等信息
orderEntity.setIntegration(gift.intValue());
orderEntity.setGrowth(growth.intValue());
orderEntity.setDeleteStatus(0);//0 未删除
}
/**
* 下单操作:验令牌、创建订单、验价格、验库存
* @param vo
* @return
*/
@Transactional
@Override
public SubmitOrderResponseVo submitOrder(OrderSubmitVo vo) {
// 在当前线程共享 OrderSubmitVo
confirmVoThreadLocal.set(vo);
SubmitOrderResponseVo response = new SubmitOrderResponseVo();
// 从拦截器中拿到当前的用户
MemberRespVo memberRespVo = LoginUserInterceptor.loginUser.get();
response.setCode(0);
// 1、验证令牌【令牌的对比和删除必须保证原子性】,通过使用脚本来完成(0:令牌校验失败; 1: 删除成功)
String script = "if redis.call('get', KEYS[1]) == ARGV[1] then return redis.call('del', KEYS[1]) else return 0 end";
String orderToken = vo.getOrderToken();
// 原子验证令牌和删除令牌
Long result = redisTemplate.execute(new DefaultRedisScript<>(script, Long.class),
Arrays.asList(OrderConstant.USER_ORDER_TOKEN_PREFIX + memberRespVo.getId()), orderToken);
if (result == 0L) {
// 令牌验证失败
response.setCode(1);
return response;
} else {
// 令牌验证成功
// 2、创建订单、订单项等信息
OrderCreateTo order = createOrder();
// 3、验价
BigDecimal payAmount = order.getOrder().getPayAmount();
BigDecimal payPrice = vo.getPayPrice();
if (Math.abs(payAmount.subtract(payPrice).doubleValue())<0.01){
// 金额对比成功
// 4、保存订单;
saveOrder(order);
// 5、库存锁定,只要有异常回滚订单数据
// 订单号,所有订单项(skuId,skuName,num)
WareSkuLockVo lockVo = new WareSkuLockVo();
lockVo.setOrderSn(order.getOrder().getOrderSn());
List locks = order.getOrderItems().stream().map(item -> {
OrderItemVo itemVo = new OrderItemVo();
itemVo.setSkuId(item.getSkuId());
itemVo.setCount(item.getSkuQuantity());
itemVo.setTitle(item.getSkuName());
return itemVo;
}).collect(Collectors.toList());
lockVo.setLocks(locks);
// TODO 远程锁库存
R r = wareFeignService.orderLockStock(lockVo);
if (r.getCode() == 0) {
// 锁成功了
response.setOrder(order.getOrder());
return response;
}else {
// 锁定失败
throw new NoStockException((String) r.get("msg"));
}
} else {
// 金额对比失败
response.setCode(2);
return response;
}
}
}
package com.atguigu.common.exception;
public class NoStockException extends RuntimeException{
private Long skuId;
public NoStockException(Long skuId){
super("商品id:"+skuId+";没有足够的库存了!");
}
public NoStockException(String message) {
super(message);
}
@Override
public String getMessage() {
return super.getMessage();
}
public Long getSkuId() {
return skuId;
}
public void setSkuId(Long skuId) {
this.skuId = skuId;
}
}
package com.atguigu.gulimall.order.feign;
@FeignClient("gulimall-ware")
public interface WareFeignService {
//....
/**
* 锁定指定订单的库存
* @param vo
* @return
*/
@PostMapping("/ware/waresku/lock/order")
R orderLockStock(@RequestBody WareSkuLockVo vo);
}
package com.atguigu.gulimall.ware.controller;
@RestController
@RequestMapping("ware/waresku")
public class WareSkuController {
@Autowired
private WareSkuService wareSkuService;
/**
* 锁定订单项库存
* @param vo
* @return
*/
@PostMapping("/lock/order")
public R orderLockStock(@RequestBody WareSkuLockVo vo){
try {
Boolean stock = wareSkuService.orderLockStock(vo);
return R.ok();
} catch (NoStockException e){
return R.error(BizCodeEnume.NO_STOCK_EXCEPTION.getCode(),BizCodeEnume.NO_STOCK_EXCEPTION.getMsg());
}
}
//....
}
/**
* @Description: 锁定库存的vo
**/
@Data
public class WareSkuLockVo {
private String orderSn;
/** 需要锁住的所有库存信息 **/
private List locks;
}
package com.atguigu.gulimall.ware.service.impl;
@Service("wareSkuService")
public class WareSkuServiceImpl extends ServiceImpl implements WareSkuService {
@Autowired
WareSkuDao wareSkuDao;
@Autowired
ProductFeignService productFeignService;
//......
/**
* 锁定指定订单的库存
* @param vo
* @return
* (rollbackFor = NoStockException.class)
* 默认只要是运行时异常都会回滚
*/
@Transactional
@Override
public Boolean orderLockStock(WareSkuLockVo vo) {
// 1、每个商品在哪个库存里有库存
List locks = vo.getLocks();
List collect = locks.stream().map(item -> {
SkuWareHashStock stock = new SkuWareHashStock();
Long skuId = item.getSkuId();
stock.setSkuId(skuId);
stock.setNum(item.getCount());
// 查询这个商品在哪里有库存
List wareIds = wareSkuDao.listWareIdHashSkuStock(skuId);
stock.setWareId(wareIds);
return stock;
}).collect(Collectors.toList());
// 2、锁定库存
for (SkuWareHashStock hashStock : collect) {
Boolean skuStocked = false;
Long skuId = hashStock.getSkuId();
List wareIds = hashStock.getWareId();
if (wareIds == null || wareIds.size()==0){
// 没有任何仓库有这个商品的库存
throw new NoStockException(skuId);
}
for (Long wareId : wareIds) {
// 成功就返回1,否则就返回0
Long count = wareSkuDao.lockSkuStock(skuId,wareId,hashStock.getNum());
if (count == 1){
skuStocked = true;
break;
} else {
// 当前仓库锁失败,重试下一个仓库
}
}
if (skuStocked == false){
// 当前商品所有仓库都没有锁住,其他商品也不需要锁了,直接返回没有库存了
throw new NoStockException(skuId);
}
}
// 3、运行到这,全部都是锁定成功的
return true;
}
@Data
class SkuWareHashStock{
private Long skuId; // skuid
private Integer num; // 锁定件数
private List wareId; // 锁定仓库id
}
}
gulimall-ware服务中com.atguigu.gulimall.ware.dao
路径下的 WareSkuDao 类:
package com.atguigu.gulimall.ware.dao;
@Mapper
public interface WareSkuDao extends BaseMapper {
/**
* 通过skuId查询在哪个仓库有库存
* @param skuId
* @return 仓库的编号
*/
List listWareIdHashSkuStock(@Param("skuId") Long skuId);
/**
* 锁库存
* @param skuId
* @param wareId
* @param num
* @return
*/
Long lockSkuStock(@Param("skuId") Long skuId, @Param("wareId") Long wareId, @Param("num") Integer num);
}
gulimall-ware服务中gulimall-ware/src/main/resources/mapper/ware
路径下的 WareSkuDao.xml:
UPDATE `wms_ware_sku` SET stock=stock+#{skuNum} WHERE sku_id=#{skuId} AND ware_id=#{wareId}
在 错误码和错误信息定义类 BizCodeEnume枚举类中新增 库存 错误码和信息
gulimall-common服务中com.atguigu.common.exception
路径下的 BizCodeEnume:
以21开头的错误码: 库存
package com.atguigu.common.exception;
public enum BizCodeEnume {
UNKNOW_EXCEPTION(10000,"系统未知异常"),
VAILD_EXCEPTION(10001,"参数格式校验失败"),
SMS_CODE_EXCEPTION(10002,"验证码获取频率太高,稍后再试"),
PRODUCT_UP_EXCEPTION(11000,"商品上架异常"),
USER_EXIST_EXCEPTION(15001,"用户名已存在"),
PHONE_EXIST_EXCEPTION(15002,"手机号已被注册"),
NO_STOCK_EXCEPTION(21000,"商品库存不足"),
LOGINACCT_PASSWORD_INVAILD_EXCEPTION(15003,"账号或密码错误");
private int code;
private String msg;
BizCodeEnume(int code,String msg){
this.code = code;
this.msg = msg;
}
public int getCode() {
return code;
}
public String getMsg() {
return msg;
}
}
订单提交成功,跳转到支付页面 pay.html
-
订单提交成功,请尽快付款!订单号:[[${submitOrderResp.order.orderSn}]]
应付金额[[${#numbers.formatDecimal(submitOrderResp.order.payAmount,1,2)}]]元
-
推荐使用
扫码支付请您在24小时内完成支付,否则订单会被自动取消(库存紧订单请参见详情页时限)
订单详细
订单提交失败,重定项到confirm.html 并回显 失败原因
填写并核对订单信息
/**
* 下单功能
* @param vo
* @return
*/
@PostMapping("/submitOrder")
public String submitOrder(OrderSubmitVo vo, Model model, RedirectAttributes redirectAttributes){
// 1、创建订单、验令牌、验价格、验库存
try {
SubmitOrderResponseVo responseVo = orderService.submitOrder(vo);
if (responseVo.getCode() == 0) {
// 下单成功来到支付选择页
model.addAttribute("submitOrderResp",responseVo);
return "pay";
} else {
// 下单失败回到订单确认页重新确认订单信息
String msg = "下单失败: ";
switch ( responseVo.getCode()){
case 1: msg+="订单信息过期,请刷新再次提交";break;
case 2: msg+="订单商品价格发生变化,请确认后再次提交";break;
case 3: msg+="商品库存不足";break;
}
redirectAttributes.addAttribute("msg",msg);
return "redirect:http://order.gulimall.cn/toTrade";
}
} catch (Exception e){
if (e instanceof NoStockException) {
String message = e.getMessage();
redirectAttributes.addFlashAttribute("msg", message);
}
return "redirect:http://order.gulimall.cn/toTrade";
}
}
/**
* 提交订单
* @param vo
* @return
*/
// @Transactional(isolation = Isolation.READ_COMMITTED) 设置事务的隔离级别
// @Transactional(propagation = Propagation.REQUIRED) 设置事务的传播级别
@Transactional(rollbackFor = Exception.class)
// @GlobalTransactional(rollbackFor = Exception.class)
@Override
public SubmitOrderResponseVo submitOrder(OrderSubmitVo vo) {
confirmVoThreadLocal.set(vo);
SubmitOrderResponseVo responseVo = new SubmitOrderResponseVo();
//去创建、下订单、验令牌、验价格、锁定库存...
//1.从拦截器中获取当前用户登录的信息
MemberResponseVo memberResponseVo = LoginUserInterceptor.loginUser.get();
responseVo.setCode(0);
//2、验证令牌是否合法【令牌的对比和删除必须保证原子性】
String script = "if redis.call('get', KEYS[1]) == ARGV[1] then return redis.call('del', KEYS[1]) else return 0 end";
String orderToken = vo.getOrderToken();
//通过lure脚本原子验证令牌和删除令牌
Long result = redisTemplate.execute(new DefaultRedisScript(script, Long.class),
Arrays.asList(USER_ORDER_TOKEN_PREFIX + memberResponseVo.getId()),
orderToken);
if (result == 0L) {
//令牌验证失败
responseVo.setCode(1);
return responseVo;
} else {
//令牌验证成功
//1、创建订单、订单项等信息
OrderCreateTo order = createOrder();
//2、验证价格
BigDecimal payAmount = order.getOrder().getPayAmount();
BigDecimal payPrice = vo.getPayPrice();
if (Math.abs(payAmount.subtract(payPrice).doubleValue()) < 0.01) {
//金额对比
//TODO 3、保存订单
saveOrder(order);
//4、库存锁定,只要有异常,回滚订单数据
//订单号、所有订单项信息(skuId,skuNum,skuName)
WareSkuLockVo lockVo = new WareSkuLockVo();
lockVo.setOrderSn(order.getOrder().getOrderSn());
//获取出要锁定的商品数据信息
List orderItemVos = order.getOrderItems().stream().map((item) -> {
OrderItemVo orderItemVo = new OrderItemVo();
orderItemVo.setSkuId(item.getSkuId());
orderItemVo.setCount(item.getSkuQuantity());
orderItemVo.setTitle(item.getSkuName());
return orderItemVo;
}).collect(Collectors.toList());
lockVo.setLocks(orderItemVos);
//TODO 调用远程锁定库存的方法
//出现的问题:扣减库存成功了,但是由于网络原因超时,出现异常,导致订单事务回滚,库存事务不回滚(解决方案:seata)
//为了保证高并发,不推荐使用seata,因为是加锁,并行化,提升不了效率,可以发消息给库存服务
R r = wmsFeignService.orderLockStock(lockVo);
if (r.getCode() == 0) {
//锁定成功
responseVo.setOrder(order.getOrder());
// int i = 10/0;
//TODO 订单创建成功,发送消息给MQ
rabbitTemplate.convertAndSend("order-event-exchange","order.create.order",order.getOrder());
//删除购物车里的数据
redisTemplate.delete(CART_PREFIX+memberResponseVo.getId());
return responseVo;
} else {
//锁定失败
String msg = (String) r.get("msg");
throw new NoStockException(msg);
// responseVo.setCode(3);
// return responseVo;
}
} else {
responseVo.setCode(2);
return responseVo;
}
}
}
/**
* 创建订单、订单项等信息
* @return
*/
private OrderCreateTo createOrder(){
OrderCreateTo createTo = new OrderCreateTo();
// 1、生成一个订单号
String orderSn = IdWorker.getTimeId();
// 2、构建一个订单
OrderEntity orderEntity = buildOrder(orderSn);
// 3、获取到所有的订单项
List itemEntities = buildOrderItems(orderSn);
// 4、计算价格、积分等相关信息
computePrice(orderEntity,itemEntities);
createTo.setOrder(orderEntity);
createTo.setOrderItems(itemEntities);
return createTo;
}
/**
* 构建订单
* @param orderSn
* @return
*/
private OrderEntity buildOrder(String orderSn) {
MemberRespVo respVp = LoginUserInterceptor.loginUser.get();
OrderEntity entity = new OrderEntity();
entity.setOrderSn(orderSn);
entity.setMemberId(respVp.getId());
OrderSubmitVo orderSubmitVo = confirmVoThreadLocal.get();
// 1、获取运费 和 收货信息
R fare = wareFeignService.getFare(orderSubmitVo.getAddrId());
FareVo fareResp = fare.getData(new TypeReference() {
});
// 2、设置运费
entity.setFreightAmount(fareResp.getFare());
// 3、设置收货人信息
entity.setReceiverPostCode(fareResp.getAddress().getPostCode());
entity.setReceiverProvince(fareResp.getAddress().getProvince());
entity.setReceiverRegion(fareResp.getAddress().getRegion());
entity.setReceiverCity(fareResp.getAddress().getCity());
entity.setReceiverDetailAddress(fareResp.getAddress().getDetailAddress());
entity.setReceiverName(fareResp.getAddress().getName());
entity.setReceiverPhone(fareResp.getAddress().getPhone());
// 4、设置订单的相关状态信息
entity.setStatus(OrderStatusEnum.CREATE_NEW.getCode());
// 5、默认取消信息
entity.setAutoConfirmDay(7);
return entity;
}
/**
* 构建所有订单项数据
* @return
*/
private List buildOrderItems(String orderSn) {
// 最后确定每个购物项的价格
List currentUserCartItems = cartFeignService.getCurrentUserCartItems();
if (currentUserCartItems != null && currentUserCartItems.size()>0){
List itemEntities = currentUserCartItems.stream().map(cartItem -> {
OrderItemEntity itemEntity = buildOrderItem(cartItem);
itemEntity.setOrderSn(orderSn);
return itemEntity;
}).collect(Collectors.toList());
return itemEntities;
}
return null;
}
/**
* 构建某一个订单项
* @param cartItem
* @return
*/
private OrderItemEntity buildOrderItem(OrderItemVo cartItem) {
OrderItemEntity itemEntity = new OrderItemEntity();
// 1、订单信息:订单号 v
// 2、商品的spu信息
Long skuId = cartItem.getSkuId();
R r = productFeignService.getSpuInfoBySkuId(skuId);
SpuInfoVo data = r.getData(new TypeReference() {
});
itemEntity.setSpuId(data.getId());
itemEntity.setSpuBrand(data.getBrandId().toString());
itemEntity.setSpuName(data.getSpuName());
itemEntity.setCategoryId(data.getCatalogId());
// 3、商品的sku信息 v
itemEntity.setSkuId(cartItem.getSkuId());
itemEntity.setSkuName(cartItem.getTitle());
itemEntity.setSkuPic(cartItem.getImage());
itemEntity.setSkuPrice(cartItem.getPrice());
itemEntity.setSkuQuantity(cartItem.getCount());
itemEntity.setSkuAttrsVals(StringUtils.collectionToDelimitedString(cartItem.getSkuAttr(),";"));
// 4、优惠信息【不做】
// 5、积分信息
itemEntity.setGiftGrowth(cartItem.getPrice().multiply(new BigDecimal(cartItem.getCount().toString())).intValue());
itemEntity.setGiftIntegration(cartItem.getPrice().multiply(new BigDecimal(cartItem.getCount().toString())).intValue());
// 6、订单项的价格信息
itemEntity.setPromotionAmount(new BigDecimal("0"));
itemEntity.setCouponAmount(new BigDecimal("0"));
itemEntity.setIntegrationAmount(new BigDecimal("0"));
// 当前订单项的实际金额 总额-各种优惠
BigDecimal orign = itemEntity.getSkuPrice().multiply(new BigDecimal(itemEntity.getSkuQuantity().toString()));
BigDecimal subtract = orign.subtract(itemEntity.getCouponAmount()).
subtract(itemEntity.getCouponAmount()).
subtract(itemEntity.getIntegrationAmount());
itemEntity.setRealAmount(subtract);
return itemEntity;
}
/**
* 计算价格
* @param orderEntity
* @param itemEntities
*/
private void computePrice(OrderEntity orderEntity, List itemEntities) {
BigDecimal total = new BigDecimal("0.0");
BigDecimal coupon = new BigDecimal("0.0");
BigDecimal integration = new BigDecimal("0.0");
BigDecimal promotion = new BigDecimal("0.0");
BigDecimal gift = new BigDecimal("0.0");
BigDecimal growth = new BigDecimal("0.0");
// 1、订单的总额,叠加每一个订单项的总额信息
for (OrderItemEntity entity : itemEntities) {
total = total.add(entity.getRealAmount());
coupon = coupon.add(entity.getCouponAmount());
integration = integration.add(entity.getIntegrationAmount());
promotion = promotion.add(entity.getPromotionAmount());
gift = gift.add(new BigDecimal(entity.getGiftIntegration()));
growth = growth.add(new BigDecimal(entity.getGiftGrowth()));
}
// 订单总额
orderEntity.setTotalAmount(total);
// 应付总额
orderEntity.setPayAmount(total.add(orderEntity.getFreightAmount()));
orderEntity.setCouponAmount(coupon);
orderEntity.setIntegrationAmount(integration);
orderEntity.setPromotionAmount(promotion);
}