案卷收集上传预览问题

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

@@ -1191,20 +1191,19 @@ public class ArchivesAutoServiceImpl extends BaseServiceImpl<ArchivesAutoMapper,
 		String back = "";
 
 
-		for (String frontUrl : frontUrls) {
-			if (frontUrl.contains(ArchiveAutoPdfServiceImpl.ARCHIVE_NUMBER[0]) && config.getFactorType().contains("1")) {
-				front = frontUrl;
-			}else if (frontUrl.contains(ArchiveAutoPdfServiceImpl.ARCHIVE_NUMBER[1]) && config.getFactorType().contains("2")) {
-				cataLog = frontUrl;
-			}
-			else if  (frontUrl.contains(ArchiveAutoPdfServiceImpl.ARCHIVE_NUMBER[2]) && config.getFactorType().contains("3")) {
-				spare = frontUrl;
-			}
-			else if  (frontUrl.contains(ArchiveAutoPdfServiceImpl.ARCHIVE_NUMBER[3]) && config.getFactorType().contains("4")) {
-				back = frontUrl;
+		if(frontUrls != null ) {
+			for (String frontUrl : frontUrls) {
+				if (frontUrl.contains(ArchiveAutoPdfServiceImpl.ARCHIVE_NUMBER[0]) && config.getFactorType().contains("1")) {
+					front = frontUrl;
+				} else if (frontUrl.contains(ArchiveAutoPdfServiceImpl.ARCHIVE_NUMBER[1]) && config.getFactorType().contains("2")) {
+					cataLog = frontUrl;
+				} else if (frontUrl.contains(ArchiveAutoPdfServiceImpl.ARCHIVE_NUMBER[2]) && config.getFactorType().contains("3")) {
+					spare = frontUrl;
+				} else if (frontUrl.contains(ArchiveAutoPdfServiceImpl.ARCHIVE_NUMBER[3]) && config.getFactorType().contains("4")) {
+					back = frontUrl;
+				}
 			}
 		}
-
 		List<String> fileUrls =new ArrayList<>();
 		if (!archivesAuto.isMedia()) {
 			List<ArchiveFile> result = this.archiveFileClient.getArchiveFileByArchivesId(archivesAuto.getId().toString(),"");