postman下载文件名不对

根据提供的引用内容，问题出在设置文件名的代码上。可以尝试以下两种方法解决问题：

1. 修改设置文件名的代码，将`ContentDisposition`改为`Content-Disposition`，并将`filename`改为`filename*`，代码如下：

   String fileName = URLEncoder.encode("your file name", "UTF-8");
   httpServletResponse.setContentType("application/octet-stream; charset=utf-8");
   httpServletResponse.setHeader("Content-Disposition", "attachment;filename*=utf-8''" + fileName);

2. 将文件名直接写在URL中，不通过设置`Content-Disposition`来实现文件下载，代码如下：

   String fileName = URLEncoder.encode("your file name", "UTF-8");
   String url = "your download url" + "?filename=" + fileName;
   httpServletResponse.sendRedirect(url);