feature：客户信息表内判重

order-management-consumer/src/main/java/com/dxhy/order/consumer/modules/order/controller/BuyerController.java

@@ -35,6 +35,7 @@ import javax.annotation.Resource;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 import java.util.*;
+import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
 /**
@@ -266,6 +267,13 @@ public class BuyerController {
                 return R.error("购方信息导入数据为空!").put(OrderManagementConstant.DATA, resultMap);
             }
             List<BuyerEntity> buyerEntityList = new ArrayList<>();
+            Collection<List<BuyerImportExcel>> values = importExcelList.stream().collect(Collectors.groupingBy(t -> t.getGhfBm())).values();
+            values.stream().map(t->{
+                if(t.size() > 1){
+                   return  R.error("购方编码存在重复项!");
+                }
+                return t;
+            });
             for (BuyerImportExcel buyerImportExcel : importExcelList) {
                 BuyerEntity buyerEntity = new BuyerEntity();
                 buyerEntity.setPurchaseName(buyerImportExcel.getGhfMc());