分布式电商项目五十：完成采购单的请求

完成采购单的请求

最后来编写完成采购单的请求，采购人员领取到采购单之后实施采购，完成之后提交到系统，对应的API文档：

07、完成采购
POST
/ware/purchase/done
请求参数
{
   id: 123,//采购单id
   items: [{itemId:1,status:4,reason:""}]//完成/失败的需求详情
}
响应数据
{
	"msg": "success",
	"code": 0
}

postman模拟场景：
注意出现{“msg”:“invalid token”,“code”:401}是因为请求没有加token验证，需要到前端查一下token的值添加进去即可
找到前端的正常请求的请求头;

之后将token输入到postman中即可，可以看到正常响应404：

之后编写这个接口，先来到controller：

    /**
     * 完成采购单发出的请求
     * @param doneVo
     * @return
     */
    ///ware/purchase/done
    @PostMapping("/done")
    public R finish(@RequestBody PurchaseDoneVo doneVo){

        purchaseService.done(doneVo);

        return R.ok();
    }

此处需要引入PurchaseDoneVo和PurchaseItemDoneVo来保存请求信息：

package com.atguigu.gulimall.ware.vo;

import lombok.Data;

@Data
public class PurchaseItemDoneVo {
    //{itemId:1,status:4,reason:""}
    private Long itemId;
    private Integer status;
    private String reason;
}

package com.lastingwar.mall.ware.vo;

import lombok.Data;

import javax.validation.constraints.NotNull;
import java.util.List;

@Data
public class PurchaseDoneVo {

    @NotNull
    private Long id;//采购单id

    private List<PurchaseItemDoneVo> items;
}

之后创建和实现方法done(doneVo)：

package com.lastingwar.mall.ware.service.impl;

import com.lastingwar.common.constant.WareConstant;
import com.lastingwar.mall.ware.entity.PurchaseDetailEntity;
import com.lastingwar.mall.ware.service.PurchaseDetailService;
import com.lastingwar.mall.ware.service.WareSkuService;
import com.lastingwar.mall.ware.vo.MergeVo;
import com.lastingwar.mall.ware.vo.PurchaseDoneVo;
import com.lastingwar.mall.ware.vo.PurchaseItemDoneVo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.lastingwar.common.utils.PageUtils;
import com.lastingwar.common.utils.Query;

import com.lastingwar.mall.ware.dao.PurchaseDao;
import com.lastingwar.mall.ware.entity.PurchaseEntity;
import com.lastingwar.mall.ware.service.PurchaseService;
import org.springframework.transaction.annotation.Transactional;


@Service("purchaseService")
public class PurchaseServiceImpl extends ServiceImpl<PurchaseDao, PurchaseEntity> implements PurchaseService {

    @Autowired
    WareSkuService wareSkuService;
    
    @Autowired
    PurchaseDetailService detailService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<PurchaseEntity> page = this.page(
                new Query<PurchaseEntity>().getPage(params),
                new QueryWrapper<PurchaseEntity>()
        );

        return new PageUtils(page);
    }

    /**
     *  查询未领取的采购请求单
     * @param params
     * @return
     */
    @Override
    public PageUtils queryPageUnreceivePurchase(Map<String, Object> params) {
        IPage<PurchaseEntity> page = this.page(
                new Query<PurchaseEntity>().getPage(params),
                new QueryWrapper<PurchaseEntity>().eq("status",0).or().eq("status",1)
        );

        return new PageUtils(page);
    }

    /**
     * 合并采购单的方法
     * @param mergeVo   采购单ID
     */
    @Transactional
    @Override
    public void mergePurchase(MergeVo mergeVo) {
        Long purchaseId = mergeVo.getPurchaseId();
        if(purchaseId == null){
            //1、新建一个
            PurchaseEntity purchaseEntity = new PurchaseEntity();

            purchaseEntity.setStatus(WareConstant.PurchaseStatusEnum.CREATED.getCode());
            purchaseEntity.setCreateTime(new Date());
            purchaseEntity.setUpdateTime(new Date());
            this.save(purchaseEntity);
            purchaseId = purchaseEntity.getId();
        }

        //TODO 确认采购单状态是0,1才可以合并

        List<Long> items = mergeVo.getItems();
        Long finalPurchaseId = purchaseId;
        List<PurchaseDetailEntity> collect = items.stream().map(i -> {
            PurchaseDetailEntity detailEntity = new PurchaseDetailEntity();

            detailEntity.setId(i);
            detailEntity.setPurchaseId(finalPurchaseId);
            detailEntity.setStatus(WareConstant.PurchaseDetailStatusEnum.ASSIGNED.getCode());
            return detailEntity;
        }).collect(Collectors.toList());


        detailService.updateBatchById(collect);

        PurchaseEntity purchaseEntity = new PurchaseEntity();
        purchaseEntity.setId(purchaseId);
        purchaseEntity.setUpdateTime(new Date());
        this.updateById(purchaseEntity);
    }

    /**
     *
     * @param ids 采购单id
     */
    @Override
    public void received(List<Long> ids) {


        //1、确认当前采购单是新建或者已分配状态
        List<PurchaseEntity> collect = ids.stream().map(id -> {
            PurchaseEntity byId = this.getById(id);
            return byId;
        }).filter(item -> {

            if (item.getStatus() == WareConstant.PurchaseStatusEnum.CREATED.getCode() ||
                    item.getStatus() == WareConstant.PurchaseStatusEnum.ASSIGNED.getCode()) {
                return true;
            }
            return false;
        }).map(item->{
            item.setStatus(WareConstant.PurchaseStatusEnum.RECEIVE.getCode());
            item.setUpdateTime(new Date());
            return item;
        }).collect(Collectors.toList());

        //2、改变采购单的状态
        this.updateBatchById(collect);



        //3、改变采购项的状态
        collect.forEach((item)->{
            List<PurchaseDetailEntity> entities = detailService.listDetailByPurchaseId(item.getId());
            List<PurchaseDetailEntity> detailEntities = entities.stream().map(entity -> {
                PurchaseDetailEntity entity1 = new PurchaseDetailEntity();
                entity1.setId(entity.getId());
                entity1.setStatus(WareConstant.PurchaseDetailStatusEnum.BUYING.getCode());
                return entity1;
            }).collect(Collectors.toList());
            detailService.updateBatchById(detailEntities);
        });
    }

    @Transactional
    @Override
    public void done(PurchaseDoneVo doneVo) {

        Long id = doneVo.getId();


        //2、改变采购项的状态
        Boolean flag = true;
        List<PurchaseItemDoneVo> items = doneVo.getItems();

        List<PurchaseDetailEntity> updates = new ArrayList<>();
        for (PurchaseItemDoneVo item : items) {
            PurchaseDetailEntity detailEntity = new PurchaseDetailEntity();
            if(item.getStatus() == WareConstant.PurchaseDetailStatusEnum.HASERROR.getCode()){
                flag = false;
                detailEntity.setStatus(item.getStatus());
            }else{
                detailEntity.setStatus(WareConstant.PurchaseDetailStatusEnum.FINISH.getCode());
                ////3、将成功采购的进行入库
                PurchaseDetailEntity entity = detailService.getById(item.getItemId());
                wareSkuService.addStock(entity.getSkuId(),entity.getWareId(),entity.getSkuNum());

            }
            detailEntity.setId(item.getItemId());
            updates.add(detailEntity);
        }

        detailService.updateBatchById(updates);

        //1、改变采购单状态
        PurchaseEntity purchaseEntity = new PurchaseEntity();
        purchaseEntity.setId(id);
        purchaseEntity.setStatus(flag?WareConstant.PurchaseStatusEnum.FINISH.getCode():WareConstant.PurchaseStatusEnum.HASERROR.getCode());
        purchaseEntity.setUpdateTime(new Date());
        this.updateById(purchaseEntity);

    }

}

之后需要添加一个入库的操作：

package com.lastingwar.mall.ware.service.impl;

import com.lastingwar.common.utils.R;
import com.lastingwar.mall.ware.feign.ProductFeignService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
import java.util.Map;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.lastingwar.common.utils.PageUtils;
import com.lastingwar.common.utils.Query;

import com.lastingwar.mall.ware.dao.WareSkuDao;
import com.lastingwar.mall.ware.entity.WareSkuEntity;
import com.lastingwar.mall.ware.service.WareSkuService;
import org.springframework.util.StringUtils;


@Service("wareSkuService")
public class WareSkuServiceImpl extends ServiceImpl<WareSkuDao, WareSkuEntity> implements WareSkuService {

    @Autowired
    WareSkuDao wareSkuDao;

    @Autowired
    ProductFeignService productFeignService;

    /**
     * 查询对应仓库ID中商品的信息
     * @param params    请求信息
     * @return
     */
    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        /**
         * skuId: 1
         * wareId: 2
         */
        QueryWrapper<WareSkuEntity> queryWrapper = new QueryWrapper<>();
        String skuId = (String) params.get("skuId");
        if(!StringUtils.isEmpty(skuId)){
            queryWrapper.eq("sku_id",skuId);
        }

        String wareId = (String) params.get("wareId");
        if(!StringUtils.isEmpty(wareId)){
            queryWrapper.eq("ware_id",wareId);
        }


        IPage<WareSkuEntity> page = this.page(
                new Query<WareSkuEntity>().getPage(params),
                queryWrapper
        );

        return new PageUtils(page);
    }

    @Override
    public void addStock(Long skuId, Long wareId, Integer skuNum) {
        //1、判断如果还没有这个库存记录新增
        List<WareSkuEntity> entities = wareSkuDao.selectList(new QueryWrapper<WareSkuEntity>().eq("sku_id", skuId).eq("ware_id", wareId));
        if(entities == null || entities.size() == 0){
            WareSkuEntity skuEntity = new WareSkuEntity();
            skuEntity.setSkuId(skuId);
            skuEntity.setStock(skuNum);
            skuEntity.setWareId(wareId);
            skuEntity.setStockLocked(0);
            //TODO 远程查询sku的名字，如果失败，整个事务无需回滚
            //1、自己catch异常
            //TODO 还可以用什么办法让异常出现以后不回滚？高级
            try {
                R info = productFeignService.info(skuId);
                Map<String,Object> data = (Map<String, Object>) info.get("skuInfo");

                if(info.getCode() == 0){
                    skuEntity.setSkuName((String) data.get("skuName"));
                }
            }catch (Exception e){

            }


            wareSkuDao.insert(skuEntity);
        }else{
            wareSkuDao.addStock(skuId,wareId,skuNum);
        }

    }
}

商品入库需要远程调用商品服务来检索商品的详细信息，添加一个远程调用接口：

package com.lastingwar.mall.ware.feign;


import com.lastingwar.common.utils.R;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;

@FeignClient("mall-product")
public interface ProductFeignService {

    /**
     *      /product/skuinfo/info/{skuId}
     *
     *
     *   1)、让所有请求过网关；
     *          1、@FeignClient("mall-gateway")：给mall-gateway所在的机器发请求
     *          2、/api/product/skuinfo/info/{skuId}
     *   2）、直接让后台指定服务处理
     *          1、@FeignClient("gulimall-gateway")
     *          2、/product/skuinfo/info/{skuId}
     *
     * @return
     */
    @RequestMapping("/product/skuinfo/info/{skuId}")
    public R info(@PathVariable("skuId") Long skuId);
}

同时在主程序开启远程调用：

package com.lastingwar.mall.ware;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.openfeign.EnableFeignClients;

@EnableDiscoveryClient
@EnableFeignClients
@SpringBootApplication
public class MallWareApplication {

    public static void main(String[] args) {
        SpringApplication.run(MallWareApplication.class, args);
    }

}

最后在关联表中保存信息的方法wareSkuDao.addStock(skuId,wareId,skuNum);

package com.lastingwar.mall.ware.dao;

import com.lastingwar.mall.ware.entity.WareSkuEntity;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;

/**
 * 商品库存
 * 
 * @author yhm
 * @email [email protected]
 * @date 2020-05-29 17:05:21
 */
@Mapper
public interface WareSkuDao extends BaseMapper<WareSkuEntity> {

    void addStock(@Param("skuId") Long skuId, @Param("wareId") Long wareId, @Param("skuNum") Integer skuNum);

}

在xml中添加对应的sql语句：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<mapper namespace="com.lastingwar.mall.ware.dao.WareSkuDao">

	<!-- 可根据自己的需求，是否要使用 -->
    <resultMap type="com.lastingwar.mall.ware.entity.WareSkuEntity" id="wareSkuMap">
        <result property="id" column="id"/>
        <result property="skuId" column="sku_id"/>
        <result property="wareId" column="ware_id"/>
        <result property="stock" column="stock"/>
        <result property="skuName" column="sku_name"/>
        <result property="stockLocked" column="stock_locked"/>
    </resultMap>
    <update id="addStock">
        UPDATE `wms_ware_sku` SET stock=stock+#{skuNum} WHERE sku_id=#{skuId} AND ware_id=#{wareId}
    </update>


</mapper>

至此完成采购单请求的服务编写完整，重启服务使用postman进行测试，正确返回：

同时前端正确显示采购失败：