增加页数保护

blade-service/blade-archive/src/main/java/org/springblade/archive/service/impl/ArchiveAutoPdfServiceImpl.java

@@ -674,7 +674,9 @@ public class ArchiveAutoPdfServiceImpl implements IArchiveAutoPdfService {
                 file.setPageNum(iStartPage.toString());
 
                 //最后一页
-                iStartPage += file.getFilePage();
+                if (file.getFilePage() != null ) {
+                    iStartPage += file.getFilePage();
+                }
                 if (idx >= datas.size()) {
                     String lastPageNum = file.getPageNum() + "~" + (iStartPage - 1);
                     file.setPageNum(lastPageNum);