库房管理软件采购申请流程代码实现解析

300rmb掏了个java+vue2的小系统，学习代码，调整下申请流程。

原有的入库流程是，库管（admin）提出采购申请给采购员（caigou），采购员采购入库时点击入库完成采购入库流程。

想弄清后端代码怎样流转申请？需要一点点找。

从vue的采购申请页面找到请求的后端api地址：

采购申请页面vue路由是：

/admin/rurchase

对应的组件是：

admin/rurchase/Rurchase

对应的vue代码地址是：

src\views\admin\rurchase\RurchaseAdd.vue

<template><a-drawertitle="新增采购申请":maskClosable="false"placement="right":closable="false":visible="show":width="1200"@close="onClose"style="height: calc(100% - 55px);overflow: auto;padding-bottom: 53px;"><a-form :form="form" layout="vertical"><a-row :gutter="20"><a-col :span="12"><a-form-item label='申请人' v-bind="formItemLayout"><a-input v-decorator="['applicant',{ rules: [{ required: true, message: '请输入申请人!' }] }]"/></a-form-item></a-col><a-col :span="24"><a-form-item label='备注消息' v-bind="formItemLayout"><a-textarea :rows="4" v-decorator="['content',{ rules: [{ required: true, message: '请输入备注消息!' }] }]"/></a-form-item></a-col><a-col :span="24"><a-table :columns="columns" :data-source="dataList"><template slot="nameShow" slot-scope="text, record"><a-input v-model="record.name"></a-input></template><template slot="typeShow" slot-scope="text, record"><a-input v-model="record.type"></a-input></template><template slot="typeIdShow" slot-scope="text, record"><a-select v-model="record.typeId" style="width: 100%"><a-select-option v-for="(item, index) in consumableType" :value="item.id" :key="index">{{ item.name }}</a-select-option></a-select></template><template slot="unitShow" slot-scope="text, record"><a-input v-model="record.unit"></a-input></template><template slot="amountShow" slot-scope="text, record"><a-input-number v-model="record.amount" :min="1" :step="1"/></template><template slot="priceShow" slot-scope="text, record"><a-input-number v-model="record.price" :min="1"/></template></a-table><a-button @click="dataAdd" type="primary" ghost size="large" style="margin-top: 10px;width: 100%">新增物品</a-button></a-col></a-row></a-form><div class="drawer-bootom-button"><a-popconfirm title="确定放弃编辑？" @confirm="onClose" okText="确定" cancelText="取消"><a-button style="margin-right: .8rem">取消</a-button></a-popconfirm><a-button @click="handleSubmit" type="primary" :loading="loading">提交</a-button></div></a-drawer>
</template><script>
import {mapState} from 'vuex'
const formItemLayout = {labelCol: { span: 24 },wrapperCol: { span: 24 }
}
export default {name: 'RurchaseAdd',props: {rurchaseAddVisiable: {default: false}},computed: {...mapState({currentUser: state => state.account.user}),show: {get: function () {return this.rurchaseAddVisiable},set: function () {}},columns () {return [{title: '物品名称',dataIndex: 'name',scopedSlots: {customRender: 'nameShow'}}, {title: '型号',dataIndex: 'type',scopedSlots: {customRender: 'typeShow'}}, {title: '数量',dataIndex: 'amount',scopedSlots: {customRender: 'amountShow'}}, {title: '所属类型',dataIndex: 'typeId',width: 200,scopedSlots: {customRender: 'typeIdShow'}}, {title: '单位',dataIndex: 'unit',scopedSlots: {customRender: 'unitShow'}}, {title: '单价',dataIndex: 'price',scopedSlots: {customRender: 'priceShow'}}]}},data () {return {formItemLayout,form: this.$form.createForm(this),loading: false,dataList: [],consumableType: []}},mounted () {this.getConsumableType()},methods: {getConsumableType () {this.$get('/cos/consumable-type/list').then((r) => {this.consumableType = r.data.data})},dataAdd () {this.dataList.push({name: '', type: '', typeId: '', unit: '', amount: '', price: ''})},reset () {this.loading = falsethis.form.resetFields()},onClose () {this.reset()this.$emit('close')},handleSubmit () {if (this.dataList.length !== 0) {let price = 0this.dataList.forEach(item => {price += item.price * item.amount})this.form.validateFields((err, values) => {if (!err) {values.price = pricevalues.goods = JSON.stringify(this.dataList)this.loading = truethis.$post('/cos/rurchase-request', {...values}).then((r) => {this.reset()this.$emit('success')}).catch(() => {this.loading = false})}})} else {this.$message.warning('请添加记录！')}}}
}
</script><style scoped></style>

在前端代码中找到提交申请的后台api接口地址是：

/cos/rurchase-request

根据后台接口地址找到对应的java controller类和方法：

cc.mrbird.febs.cos.controller.RurchaseRequestController#save

这里用到了RESTfultool插件

package cc.mrbird.febs.cos.controller;import cc.mrbird.febs.common.utils.R;
import cc.mrbird.febs.cos.entity.RurchaseRequest;
import cc.mrbird.febs.cos.service.IRurchaseRequestService;
import cn.hutool.core.date.DateUtil;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import lombok.RequiredArgsConstructor;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;import java.util.Date;
import java.util.List;/*** @author FanK*/
@RestController
@RequestMapping("/cos/rurchase-request")
@RequiredArgsConstructor(onConstructor = @__(@Autowired))
public class RurchaseRequestController {private final IRurchaseRequestService rurchaseRequestService;/*** 采购申请入库* @param rurchaseRequest* @return*/@PostMapping("/rurchasePut")public R rurchasePut(RurchaseRequest rurchaseRequest) {return R.ok(rurchaseRequestService.rurchasePut(rurchaseRequest));}/*** 分页获取采购申请* @param page* @param rurchaseRequest* @return*/@GetMapping("/page")public R page(Page page, RurchaseRequest rurchaseRequest) {return R.ok(rurchaseRequestService.rurchaseRequestByPage(page, rurchaseRequest));}/*** 添加采购申请* @param rurchaseRequest* @return*/@PostMappingpublic R save(RurchaseRequest rurchaseRequest) {rurchaseRequest.setCreateDate(DateUtil.formatDateTime(new Date()));return R.ok(rurchaseRequestService.rurchaseRequestAdd(rurchaseRequest));}/*** 修改采购申请* @param rurchaseRequest* @return*/@PutMappingpublic R edit(RurchaseRequest rurchaseRequest) {return R.ok(rurchaseRequestService.updateById(rurchaseRequest));}/*** 删除采购申请* @param ids* @return*/@DeleteMapping("/{ids}")public R deleteByIds(@PathVariable("ids") List<Integer> ids) {return R.ok(rurchaseRequestService.removeByIds(ids));}}

通过其调用的函数：

rurchaseRequestService.rurchaseRequestAdd(rurchaseRequest)

mybatis的mapper

cc.mrbird.febs.cos.service.IRurchaseRequestService

package cc.mrbird.febs.cos.service;import cc.mrbird.febs.cos.entity.RurchaseRequest;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.IService;
import org.apache.ibatis.annotations.Param;import java.util.LinkedHashMap;/*** @author FanK*/
public interface IRurchaseRequestService extends IService<RurchaseRequest> {// 分页获取采购申请IPage<LinkedHashMap<String, Object>> rurchaseRequestByPage(Page page, RurchaseRequest rurchaseRequest);// 添加采购申请Boolean rurchaseRequestAdd(RurchaseRequest rurchaseRequest);// 采购申请入库Boolean rurchasePut(RurchaseRequest rurchaseRequest);
}

IRurchaseRequestService的实现类：

cc.mrbird.febs.cos.service.impl.RurchaseRequestServiceImpl

package cc.mrbird.febs.cos.service.impl;import cc.mrbird.febs.cos.entity.GoodsBelong;
import cc.mrbird.febs.cos.entity.RurchaseRequest;
import cc.mrbird.febs.cos.dao.RurchaseRequestMapper;
import cc.mrbird.febs.cos.entity.StockInfo;
import cc.mrbird.febs.cos.entity.StockPut;
import cc.mrbird.febs.cos.service.IGoodsBelongService;
import cc.mrbird.febs.cos.service.IRurchaseRequestService;
import cc.mrbird.febs.cos.service.IStockInfoService;
import cc.mrbird.febs.cos.service.IStockPutService;
import cn.hutool.core.date.DateUtil;
import cn.hutool.json.JSONArray;
import cn.hutool.json.JSONUtil;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import lombok.RequiredArgsConstructor;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;import java.util.Date;
import java.util.LinkedHashMap;
import java.util.List;/*** @author FanK*/
@Service
@RequiredArgsConstructor(onConstructor = @__(@Autowired))
public class RurchaseRequestServiceImpl extends ServiceImpl<RurchaseRequestMapper, RurchaseRequest> implements IRurchaseRequestService {private final IGoodsBelongService goodsBelongService;private final IStockPutService stockPutService;private final IStockInfoService stockInfoService;@Overridepublic IPage<LinkedHashMap<String, Object>> rurchaseRequestByPage(Page page, RurchaseRequest rurchaseRequest) {return baseMapper.rurchaseRequestByPage(page, rurchaseRequest);}@Overridepublic Boolean rurchaseRequestAdd(RurchaseRequest rurchaseRequest) {rurchaseRequest.setNum("RUR-"+new Date().getTime());JSONArray array = JSONUtil.parseArray(rurchaseRequest.getGoods());List<GoodsBelong> goodsBelongList = JSONUtil.toList(array, GoodsBelong.class);rurchaseRequest.setStep(0);this.save(rurchaseRequest);goodsBelongList.forEach(item -> {item.setCreateDate(DateUtil.formatDateTime(new Date()));item.setNum(rurchaseRequest.getNum());});return goodsBelongService.saveBatch(goodsBelongList);}@Overridepublic Boolean rurchasePut(RurchaseRequest rurchaseRequest) {JSONArray array = JSONUtil.parseArray(rurchaseRequest.getGoods());List<GoodsBelong> goodsBelongList = JSONUtil.toList(array, GoodsBelong.class);// 添加入库单StockPut stockPut = new StockPut();stockPut.setContent(rurchaseRequest.getRurchaseContent());stockPut.setCreateDate(DateUtil.formatDateTime(new Date()));stockPut.setCustodian(rurchaseRequest.getCustodian());stockPut.setPutUser(rurchaseRequest.getPutUser());stockPut.setPrice(rurchaseRequest.getPrice());stockPut.setNum("PUT-"+new Date().getTime());stockPutService.save(stockPut);goodsBelongList.forEach(item -> {item.setCreateDate(DateUtil.formatDateTime(new Date()));item.setNum(stockPut.getNum());// 判断库房物品是否存在StockInfo stockInfo = stockInfoService.getOne(Wrappers.<StockInfo>lambdaQuery().eq(StockInfo::getName, item.getName()).eq(StockInfo::getTypeId, item.getTypeId()).eq(StockInfo::getIsIn, 0));if (stockInfo != null) {// 更改库房数据stockInfoService.update(Wrappers.<StockInfo>lambdaUpdate().set(StockInfo::getAmount, stockInfo.getAmount()+item.getAmount()).set(StockInfo::getPrice, stockInfo.getPrice()).eq(StockInfo::getName, stockInfo.getName()));} else {// 重新添加库房数据StockInfo stock = new StockInfo();stock.setName(item.getName());stock.setAmount(item.getAmount());stock.setCreateDate(DateUtil.formatDateTime(new Date()));stock.setType(item.getType());stock.setTypeId(item.getTypeId());stock.setUnit(item.getUnit());stock.setPrice(item.getPrice());stock.setIsIn(0);stockInfo = stock;stockInfoService.save(stock);}// 添加入库记录StockInfo stockInfoPut = new StockInfo();stockInfoPut.setParentId(stockInfo.getId());stockInfoPut.setName(item.getName());stockInfoPut.setAmount(item.getAmount());stockInfoPut.setCreateDate(DateUtil.formatDateTime(new Date()));stockInfoPut.setType(item.getType());stockInfoPut.setTypeId(item.getTypeId());stockInfoPut.setUnit(item.getUnit());stockInfoPut.setPrice(item.getPrice());stockInfoPut.setIsIn(1);stockInfoService.save(stockInfoPut);// 添加所属信息GoodsBelong goodsBelong = new GoodsBelong();goodsBelong.setNum(stockPut.getNum());goodsBelong.setCreateDate(DateUtil.formatDateTime(new Date()));goodsBelong.setAmount(item.getAmount());goodsBelong.setName(item.getName());goodsBelong.setPrice(item.getPrice());goodsBelong.setType(item.getType());goodsBelong.setTypeId(item.getTypeId());goodsBelong.setUnit(item.getUnit());goodsBelongService.save(goodsBelong);});// 修改状态this.update(Wrappers.<RurchaseRequest>lambdaUpdate().set(RurchaseRequest::getStep, 1).eq(RurchaseRequest::getId, rurchaseRequest.getId()));return true;}
}

从RurchaseRequestServiceImpl#rurchaseRequestAdd方法中找到两个操作数据库的关键函数：

this.save(rurchaseRequest);

goodsBelongService.saveBatch(goodsBelongList);

这两个方法都是继承自mybatisplus的操作数据库的公共方法，可以在类的定义中找到对应的java实体类：

public class RurchaseRequestServiceImpl extends ServiceImpl<RurchaseRequestMapper, RurchaseRequest> implements IRurchaseRequestService

public interface IGoodsBelongService extends IService<GoodsBelong>

关于mybatisplus的使用方法参考：

Mybatis-plus之IService的使用_iservice mybatisplus-CSDN博客

https://www.cnblogs.com/kaibindirver/p/16086336.html

（不明白为什么extends ServiceImpl<RurchaseRequestMapper, RurchaseRequest>后，还要implements IRurchaseRequestService，需要看源码）

找到java实体类：

cc.mrbird.febs.cos.entity.GoodsBelong

cc.mrbird.febs.cos.entity.RurchaseRequest

package cc.mrbird.febs.cos.entity;import java.io.Serializable;
import java.math.BigDecimal;import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.annotation.TableId;
import lombok.Data;
import lombok.EqualsAndHashCode;
import lombok.experimental.Accessors;/*** 物品所属** @author FanK*/
@Data
@EqualsAndHashCode(callSuper = false)
@Accessors(chain = true)
public class GoodsBelong implements Serializable {private static final long serialVersionUID = 1L;@TableId(value = "ID", type = IdType.AUTO)private Integer id;/*** 物品名称*/private String name;/*** 型号*/private String type;/*** 单位*/private String unit;/*** 数量*/private Integer amount;/*** 耗材类型*/private Integer typeId;/*** 申请/入库单号*/private String num;/*** 单价*/private BigDecimal price;/*** 日期*/private String createDate;}

package cc.mrbird.febs.cos.entity;import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.io.Serializable;import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.annotation.TableField;
import com.baomidou.mybatisplus.annotation.TableId;
import lombok.Data;
import lombok.EqualsAndHashCode;
import lombok.experimental.Accessors;/*** 采购申请** @author FanK*/
@Data
@EqualsAndHashCode(callSuper = false)
@Accessors(chain = true)
public class RurchaseRequest implements Serializable {private static final long serialVersionUID = 1L;@TableId(value = "ID", type = IdType.AUTO)private Integer id;/*** 采购申请单号*/private String num;/*** 采购说明*/private String content;/*** 预计金额*/private BigDecimal price;/*** 采购流程 0是正在采购 1是入库完成*/private Integer process;/*** 当前流程*/private Integer step;/*** 申请人*/private String applicant;/*** 创建时间*/private String createDate;@TableField(exist = false)private String goods;@TableField(exist = false)private String custodian;@TableField(exist = false)private String putUser;@TableField(exist = false)private String rurchaseContent;}

从mybatisplus的表名对应关系，可以找到数据库的两张表：

goods_belong

名	类型	长度	小数点	注释
id	int			主键
name	varchar	200		物品名称
type	varchar	200		型号
unit	varchar	30		单位
amount	int			数量
type_id	int			耗材类型
num	varchar	200		申请/入库单号
price	decimal	10	2	单价
create_date	datetime			日期

rurchase_request

名	类型	长度	小数点	注释
id	int			主键
num	varchar	200		采购申请单号
content	varchar	300		采购说明
price	decimal	10	2	预计金额
process	tinyint			采购流程 0是正在采购 1是入库完成
step	tinyint			当前流程
applicant	varchar	200		申请人
create_date	datetime			创建时间

库管admin新增一个采购申请，会在rurchase_request增加一条数据对应这个申请，同时会在goods_belong中新增若干条数据，对应申请表中的若干项物资

申请记录：

ps：其中step字段的值表示当前流程，0表示等待采购，1表示入库完成

申请的物品清单：

在采购员账号caigou中可以办理采购入库：

当入库后，库存就会增加，对应的库存表会变化，涉及到多张表

stock_info

stock_put

goods_belong

rurchase_request

cc.mrbird.febs.cos.service.impl.RurchaseRequestServiceImpl#rurchasePut

    @Overridepublic Boolean rurchasePut(RurchaseRequest rurchaseRequest) {JSONArray array = JSONUtil.parseArray(rurchaseRequest.getGoods());List<GoodsBelong> goodsBelongList = JSONUtil.toList(array, GoodsBelong.class);// 添加入库单StockPut stockPut = new StockPut();stockPut.setContent(rurchaseRequest.getRurchaseContent());stockPut.setCreateDate(DateUtil.formatDateTime(new Date()));stockPut.setCustodian(rurchaseRequest.getCustodian());stockPut.setPutUser(rurchaseRequest.getPutUser());stockPut.setPrice(rurchaseRequest.getPrice());stockPut.setNum("PUT-"+new Date().getTime());stockPutService.save(stockPut);goodsBelongList.forEach(item -> {item.setCreateDate(DateUtil.formatDateTime(new Date()));item.setNum(stockPut.getNum());// 判断库房物品是否存在StockInfo stockInfo = stockInfoService.getOne(Wrappers.<StockInfo>lambdaQuery().eq(StockInfo::getName, item.getName()).eq(StockInfo::getTypeId, item.getTypeId()).eq(StockInfo::getIsIn, 0));if (stockInfo != null) {// 更改库房数据stockInfoService.update(Wrappers.<StockInfo>lambdaUpdate().set(StockInfo::getAmount, stockInfo.getAmount()+item.getAmount()).set(StockInfo::getPrice, stockInfo.getPrice()).eq(StockInfo::getName, stockInfo.getName()));} else {// 重新添加库房数据StockInfo stock = new StockInfo();stock.setName(item.getName());stock.setAmount(item.getAmount());stock.setCreateDate(DateUtil.formatDateTime(new Date()));stock.setType(item.getType());stock.setTypeId(item.getTypeId());stock.setUnit(item.getUnit());stock.setPrice(item.getPrice());stock.setIsIn(0);stockInfo = stock;stockInfoService.save(stock);}// 添加入库记录StockInfo stockInfoPut = new StockInfo();stockInfoPut.setParentId(stockInfo.getId());stockInfoPut.setName(item.getName());stockInfoPut.setAmount(item.getAmount());stockInfoPut.setCreateDate(DateUtil.formatDateTime(new Date()));stockInfoPut.setType(item.getType());stockInfoPut.setTypeId(item.getTypeId());stockInfoPut.setUnit(item.getUnit());stockInfoPut.setPrice(item.getPrice());stockInfoPut.setIsIn(1);stockInfoService.save(stockInfoPut);// 添加所属信息GoodsBelong goodsBelong = new GoodsBelong();goodsBelong.setNum(stockPut.getNum());goodsBelong.setCreateDate(DateUtil.formatDateTime(new Date()));goodsBelong.setAmount(item.getAmount());goodsBelong.setName(item.getName());goodsBelong.setPrice(item.getPrice());goodsBelong.setType(item.getType());goodsBelong.setTypeId(item.getTypeId());goodsBelong.setUnit(item.getUnit());goodsBelongService.save(goodsBelong);});// 修改状态this.update(Wrappers.<RurchaseRequest>lambdaUpdate().set(RurchaseRequest::getStep, 1).eq(RurchaseRequest::getId, rurchaseRequest.getId()));return true;}

入库后goods_belong会增加三条入库操作记录