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Hello i'm trying create an application allowing me host any kind of file. In order to do it i'm exececuting following magic:

@RequestMapping(value = "/files/{file_name}", method = RequestMethod.GET) @ResponseBody public FileSystemResource getFile( @PathVariable("file_name") String fileName) { System.out.println(fileName); String filePath = "./files/"; return new FileSystemResource(new File(filePath+fileName)); }

But this approach brings three unwanted problems:

  1. Some random data is beeing appended to the file

  2. The file gets opened in the browser window instead of beeing downloaded - i've tried to hack this using something like

    produces = "application/octet-stream"

    but it only resulted in 406 error.

  3. The test.txt is beeing truncated into test, i found a walkaround in providing the app with test.txt/ as fileName but it looks a bit messy.

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As stated on spring manual

As with @RequestBody, Spring converts the returned object to a response body by using an HttpMessageConverter

I think your problem is spring doesn't come with a HttpMessageConverter than can process FileSystemResource.

A list of builtin HttpMessageConverter is available here. I suggest you try converting your response into byte array somehow, maybe it will pick ByteArrayHttpMessageConverter instead and help solve your issue

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I used code like this to return image

@RequestMapping(value = "/image/{id}", method = RequestMethod.GET) public String getImage(... HttpServletResponse response) { response.setContentType(image/png); (response.getOutputStream()).write(imageByteArray); }

I think you have to define proper mime type and send your data to response.

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