资料批量下载处理文件名重复的问题

blade-service/blade-business/src/main/java/org/springblade/business/controller/InformationWriteQueryController.java

@@ -1476,8 +1476,9 @@ public R<String> batchDownloadFileToZip(String ids, HttpServletResponse response
                     String fileName = result.get(i).getName();
                     fileName = fileName == null ? "找不到文件题目" : fileName.replaceAll("\\\\", "_").replaceAll("/", "_");
                     if (nameMap.containsKey(fileName)) {
-                        fileName = fileName + "_" + nameMap.get(fileName);
-                        nameMap.put(fileName, nameMap.get(fileName) + 1);
+                        int num = nameMap.get(fileName) == null ? 1 : nameMap.get(fileName);
+                        nameMap.put(fileName, num + 1);
+                        fileName = fileName + "_" + num;
                     } else {
                         nameMap.put(fileName, 1);
                     }