URL server new URL (url) //works for https and not for http, i needed https in my case. FYI - once connected, till next server restart, it doesnt need authentication. To disallow all download requests, coming from other domains, you can check if the referer header contains your domain name. I used a customized authenticator before connecting the URL, and it authenticates and downloads the document. Many times, other websites may cross reference your files in their websites as direct links. Prevent Cross-Referencing of File Downloads
Response.addHeader("Content-Disposition", "attachment filename="+fileName) įpy(file, response.getOutputStream()) Ģ. Path file = Paths.get(dataDirectory, fileName) String dataDirectory = request.getServletContext().getRealPath("/WEB-INF/downloads/pdf/") If user is not authorized - he should be thrown out from here itself Let’s look at an example implementation for file download class void downloadPDFResource( HttpServletRequest request, Add an HTTP response header named Content-Disposition and give it the value attachment filename=fileName, where fileName is the default file name that should appear in the File Download dialog box.If you do not know what the content type is or want the browser to always display the Save As dialog, set it to APPLICATION/OCTET-STREAM (NOT case sensitive). Set the response’s content type to the file’s content type.Use the void return type for your request-handling method and add HttpServletResponse as an argument to the method.In Spring MVC application, to download a resource such as a file to the browser, you need to do the following in your controller.
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