无法预览的不显示预览按钮

6c

2026-03-04 bb4857fdf86492437e4e6431c01c143ad571a2d9

 src/main/java/com/product/file/service/FileManagerService.java

@@ -1250,4 +1250,28 @@
      return flag;
   }

    /**
     * 验证是否可以预览
     * @param fse
     * @return
     */
    public Object checkPreview(FieldSetEntity fse) {
        String fileName = fse.getString("file_name");
        boolean allowPreviewFlag = Global.getPropertyToBoolean("file.view.online", "true");
        List<String> canTransferFormatList = Lists.newArrayList(Arrays.asList(Global.getSystemConfig("can.transfer.format", "").split(",")));
        List<String> canDirectPreviewList = Lists.newArrayList(Arrays.asList(Global.getSystemConfig("can.direct.view.online.format", "").split(",")));
        List<String> canPreviewList = Lists.newArrayList();
        canPreviewList.addAll(canTransferFormatList);
        canPreviewList.addAll(canDirectPreviewList);
        if (StringUtils.isEmpty(fileName)) {
            if (allowPreviewFlag) {
                return BaseUtil.collection2String(canPreviewList);
            } else {
                return "";
            }
        } else {
            String tail = fileName.substring(fileName.lastIndexOf(".") + 1);
            return allowPreviewFlag && canPreviewList.contains(tail);
        }
    }
}