fix：修复配方库编码重复问题

yudao-module-iot/yudao-module-iot-api/src/main/java/cn/iocoder/yudao/module/iot/enums/ErrorCodeConstants.java

@@ -74,6 +74,7 @@ public interface ErrorCodeConstants {
     ErrorCode RECIPE_CODE_DUPLICATE = new ErrorCode(1_003_000_004, "编码已存在");
     ErrorCode RECIPE_CODE_EMPTY = new ErrorCode(1_003_000_005, "配方编码不能为空");
     ErrorCode RECIPE_PLAN_DETAIL_NOT_EXISTS = new ErrorCode(1_003_000_006, "配方计划详情表（配方库）不存在");
+    ErrorCode RECIPE_PLAN_DETAIL_CODE_EXISTS = new ErrorCode(1_003_000_006, "编码已存在");
     ErrorCode RECIPE_POINT_RECORD_NOT_EXISTS = new ErrorCode(1_003_000_007, "IoT配方点位记录不存在");
     ErrorCode RECIPE_DEVICE_RECORD_NOT_EXISTS = new ErrorCode(1_003_000_008, "设备点位采集值记录不存在");
 }

yudao-module-iot/yudao-module-iot-biz/src/main/java/cn/iocoder/yudao/module/iot/service/recipeplandetail/RecipePlanDetailServiceImpl.java

@@ -1,5 +1,6 @@
 package cn.iocoder.yudao.module.iot.service.recipeplandetail;
 
+import com.baomidou.mybatisplus.core.toolkit.Wrappers;
 import org.springframework.stereotype.Service;
 import javax.annotation.Resource;
 import org.springframework.validation.annotation.Validated;
@@ -29,12 +30,20 @@ public class RecipePlanDetailServiceImpl implements RecipePlanDetailService {
 
     @Override
     public Long createRecipePlanDetail(RecipePlanDetailSaveReqVO createReqVO) {
+        // 校验编码是否存在
+        validateCodeOnly(createReqVO.getCode());
         // 插入
         RecipePlanDetailDO recipePlanDetail = BeanUtils.toBean(createReqVO, RecipePlanDetailDO.class);
         recipePlanDetailMapper.insert(recipePlanDetail);
         // 返回
         return recipePlanDetail.getId();
     }
+    private void validateCodeOnly(String code) {
+        if (recipePlanDetailMapper.exists(Wrappers.<RecipePlanDetailDO>lambdaQuery()
+                .eq(RecipePlanDetailDO::getCode, code))) {
+            throw exception(RECIPE_PLAN_DETAIL_CODE_EXISTS);
+        }
+    }
 
     @Override
     public void updateRecipePlanDetail(RecipePlanDetailSaveReqVO updateReqVO) {