bug fix

distributed-print-business/src/main/java/com/qmth/distributed/print/business/util/CreatePdfUtil.java

@@ -398,12 +398,12 @@ public class CreatePdfUtil {
         //已曝光卷型
         String exposedPaperType = examTaskDetail.getExposedPaperType();
         if (drawRule == DrawRuleEnum.ONE) {
-            if (Objects.isNull(unexposedPaperType)) {
+            if (Objects.isNull(unexposedPaperType) || Objects.equals(unexposedPaperType.trim(), "")) {
                 CreatePdfCacheUtil.deletePaperType(key);
                 throw ExceptionResultEnum.ERROR.exception("当前没有未曝光的卷型");
             }
         } else {
-            if (Objects.isNull(exposedPaperType) && Objects.isNull(unexposedPaperType)) {
+            if ((Objects.isNull(exposedPaperType) || Objects.equals(exposedPaperType.trim(), "")) && (Objects.isNull(unexposedPaperType) || Objects.equals(unexposedPaperType.trim(), ""))) {
                 CreatePdfCacheUtil.deletePaperType(key);
                 throw ExceptionResultEnum.ERROR.exception("当前没有未曝光的卷型");
             }