feat(wms): 新增资金日记账余额计算功能

- 在 WmsJournalMapper 中添加 getLastBalance 方法，用于获取最新的余额
- 在 WmsJournalServiceImpl 中实现插入资金日记账时自动计算新余额的功能
- 新增 addJournal 方法，直接插入资金日记账记录

klp-wms/src/main/java/com/klp/mapper/WmsJournalMapper.java

@@ -4,6 +4,8 @@ import com.klp.domain.WmsJournal;
 import com.klp.domain.vo.WmsJournalVo;
 import com.klp.common.core.mapper.BaseMapperPlus;
 
+import java.math.BigDecimal;
+
 /**
  * 资金日记账Mapper接口
  *
@@ -12,4 +14,5 @@ import com.klp.common.core.mapper.BaseMapperPlus;
  */
 public interface WmsJournalMapper extends BaseMapperPlus<WmsJournalMapper, WmsJournal, WmsJournalVo> {
 
+    BigDecimal getLastBalance();
 }

klp-wms/src/main/java/com/klp/service/impl/WmsJournalServiceImpl.java

@@ -15,9 +15,11 @@ import com.klp.domain.WmsJournal;
 import com.klp.mapper.WmsJournalMapper;
 import com.klp.service.IWmsJournalService;
 
+import java.math.BigDecimal;
 import java.util.List;
 import java.util.Map;
 import java.util.Collection;
+import java.util.Optional;
 
 /**
  * 资金日记账Service业务层处理
@@ -76,15 +78,30 @@ public class WmsJournalServiceImpl implements IWmsJournalService {
      */
     @Override
     public Boolean insertByBo(WmsJournalBo bo) {
-        WmsJournal add = BeanUtil.toBean(bo, WmsJournal.class);
-        validEntityBeforeSave(add);
-        boolean flag = baseMapper.insert(add) > 0;
+        WmsJournal journal = BeanUtil.toBean(bo, WmsJournal.class);
+        validEntityBeforeSave(journal);
+        // 计算新的余额
+        BigDecimal lastBalance = baseMapper.getLastBalance();
+        if (lastBalance == null) {
+            lastBalance = BigDecimal.ZERO;
+        }
+        BigDecimal newBalance = lastBalance
+            .add(Optional.ofNullable(journal.getIncomeAmount()).orElse(BigDecimal.ZERO))
+            .subtract(Optional.ofNullable(journal.getExpenseAmount()).orElse(BigDecimal.ZERO));
+
+        journal.setBalanceAmount(newBalance);
+        boolean flag = baseMapper.insert(journal) > 0;
         if (flag) {
-            bo.setJournalId(add.getJournalId());
+            bo.setJournalId(journal.getJournalId());
         }
         return flag;
     }
 
+    public void addJournal(WmsJournal journal) {
+
+        baseMapper.insert(journal);
+    }
+
     /**
      * 修改资金日记账
      */

klp-wms/src/main/resources/mapper/klp/WmsJournalMapper.xml

@@ -20,6 +20,13 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         <result property="updateTime" column="update_time"/>
         <result property="delFlag" column="del_flag"/>
     </resultMap>
+    <select id="getLastBalance" resultType="java.math.BigDecimal">
+        SELECT balance_amount
+        FROM wms_journal
+        WHERE del_flag = 0
+        ORDER BY create_time DESC
+        LIMIT 1
+    </select>
 
 
 </mapper>