Merge remote-tracking branch 'origin/master'

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

@@ -782,7 +782,8 @@ public class ArchiveAutoPdfServiceImpl implements IArchiveAutoPdfService {
         String url = file.getPdfFileUrl();
         if (StringUtil.isEmpty(url)) {
             String fileUrl = file.getFileUrl();
-            if (fileUrl.endsWith(".pdf") || fileUrl.endsWith(".PDF")) {
+
+            if (StringUtils.isNotEmpty(fileUrl) && fileUrl.endsWith(".pdf") || fileUrl.endsWith(".PDF")) {
                 url = file.getFileUrl();
             }
         }