InputStreamResource If your resource is not a file, e. You don't advise for the use of the FileSystemResource class? It is even advisable if your resource is a file. About the file length calculation part: If you are worried, don't be. File length should be good enough in the general case. I just mentioned it because it does can be slow , specially if the file is in a remote system or something more elaborated like that - a database, maybe?. But only worry if it becomes a problem or if you have hard evidence it will become one , not before.
The main point is: you are making an effort to stream the file, if you have to preload all of it before, then the streaming ends up making no difference, eh? It downloads 0 bytes file. Am I missing something? Show 5 more comments. Please try again. BorisR 1 1 silver badge 15 15 bronze badges. Sunil Sunil 6 6 silver badges 12 12 bronze badges. The resource could be: ByteArrayResource FileSystemResource UrlResource or even GridFsResource If you need to download a file from application resources directory, check out my answer : it explains how to locate the resource in class path using ClassPathResource Be aware of possibly wrong Content-Type header set see FileSystemResource is returned with content type json.
You can use the Content-Disposition header to satisfy this requirement: The first parameter in the HTTP context is either inline default value, indicating it can be displayed inside the Web page, or as the Web page or attachment indicating it should be downloaded; most browsers presenting a 'Save as' dialog, prefilled with the value of the filename parameters if present.
Denis Zavedeev Denis Zavedeev 5, 4 4 gold badges 24 24 silver badges 43 43 bronze badges. This should be the accepted answer. It seems to provide the only clean handling of ContentDisposition and gives clear explanations. Definitely the best answer — Tobi Akinyemi. Works perfectly, and works with "springdoc-openapi-ui" v1. The "Download" link appears as expected with "attachment " flag. Below code worked for me to generate and download a text file. Lorem Ipsum has been the industry's standard dummy text ever since the s, when an unknown printer took a galley of type and scrambled it to make a type specimen book.
It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum. Siva Kumar Siva Kumar 6 6 silver badges 11 11 bronze badges.
If I need two view resolvers, how can I also return the name of resolver or choose it in controller?? Sagar Nair Sagar Nair 1 1 silver badge 8 8 bronze badges. In my case I'm generating some file on demand, so also url has to be generated.
After clicking on link browser asks me what to do with file - save or open. This can be a useful answer. I had to add this to download any file response.
The view template name is defined by the return statement of the handler and the spring. So in this hello handler method, the return view is hello. It is a FreeMarker interpolation enabling FreeMarker template files to access the data from the model.
Its value is filled by the model. Since Spring Boot 2. The main. Viewed 24k times. Improve this question. If I use the product. But the error remains. The actual id is showing up on the get request now though.
PatrickLC That did the trick! If you put that up as the answer I shall accept it. Show 3 more comments. Active Oldest Votes. Improve this answer. Leandro Carracedo Leandro Carracedo 6, 2 2 gold badges 41 41 silver badges 47 47 bronze badges. Just now I noticed that you have the symbol instead of the usual '. Anything I should know of? Post as a guest Name. Email Required, but never shown. The Overflow Blog. Podcast what if you could invest in your favorite developer? Who owns this outage?
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