解决月报报错相关问题

jjt-biz/src/main/java/com/jjt/emp/controller/TwinEmpCalcController.java

@@ -19,10 +19,7 @@ import javax.annotation.Resource;
 import javax.servlet.http.HttpServletResponse;
 import java.math.BigDecimal;
 import java.math.RoundingMode;
-import java.util.Comparator;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
+import java.util.*;
 import java.util.stream.Collectors;
 
 /**
@@ -116,7 +113,7 @@ public class TwinEmpCalcController extends BaseController {
      */
     private BigDecimal calculateTotalPrice(List<TwinEmpCalc> group) {
         return group.stream()
-                .map(TwinEmpCalc::getTotalPrice)
+                .map(TwinEmpCalc::getTotalPrice).filter(Objects::nonNull)
                 .reduce(BigDecimal.ZERO, BigDecimal::add);
     }