Java downloading file

Francis what if your application downloads different file types? Lobster's answer enables you to dynamically set the content disposition. I guess not, because it's not scalable. We are currently supporting a dozen types of resources. We might support more file types based on what users want to upload in that case we might end up with so many end points essentially doing the same thing. IMHO there has to be only one download end point and it handles multitude of file types.

Francis — Rose. Ralph Ralph k 49 49 gold badges silver badges bronze badges. FaisalFeroz: yes this is right, but the file document is anyway created in memory see the question: "PDF needs to be generated within the code".

Anyway - what is your solution that overcome this problem? You may also use ResponseEntity which is a super of HttpEntity which allows you to specify the response http status code. Is there a reason why you are replacing whitespaces with underscore in the filename? You can wrap it in quotes to send the actual name. Show 1 more comment.

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. Please mail your requirement at [email protected] Duration: 1 week to 2 week. Servlet Tutorial. War File welcome-file-list Load on startup. Servlet Collaboration. RequestDispacher sendRedirect. Servlet Advance Session Tracking.

ServletException; import javax. Reinforcement Learning. R Programming. React Native. Python Design Patterns. Python Pillow. Python Turtle. Verbal Ability. Interview Questions. You attempt the download within 30 minutes of accepting the license. How can I download and install Java? Improve this question. This question is on-topic as it pertains to how developers install development kits. Reopening it for that reason. Add a comment. Active Oldest Votes.

Improve this answer. Eric Kamara Eric Kamara Maybe this zillionth repost will finally do the trick. Could you confirm this?

The --no-cookies is redundant and --no-check-certificate is necessary only with Wget 1. Show 25 more comments. Edit: Updated for Java The value doesn't have to be " accept-securebackup-cookie ". Det Det 3, 3 3 gold badges 19 19 silver badges 27 27 bronze badges.

Well, I changed it to " cURL requires the dash - in the end. It seems doesn't work for old version. I can't download 8u Probably because of Downloading these releases requires an oracle. Any workaround? We use docker, that's why we need to use specific version of java. Show 23 more comments. Andrew Gilmartin Andrew Gilmartin 1, 12 12 silver badges 12 12 bronze badges. I had my url like download. This is an interesting matter but does not answer the question.

Clicking on FireFox is incompatible with "automate download". Not as troublesome translation: impossible as in my browsers plural today. All the wget tricks above with accept cookie parameter didn't work. This absolute helped me. To use the tar. Here are some guides for command line lovers. For Debian like systems tested on Debian squeeze and Ubuntu As of , other methods are not easy to adjust with different versions.

Tried this method with oracle-java8-installer with --yes, --assume-yes, --force-yes options but everytime installation wants me to accept license agreement with enter-key. Java SE Development Kit Jason Xu Jason Xu 2, 4 4 gold badges 26 26 silver badges 52 52 bronze badges.

After that, this script cn be modified for your specific Linux! A better answer would be "just follow the installation instructions on the download website" And how's it odd that the answer assumes Linux when the question title includes Linux?

The sceipt is not a one-size-fit-all given that Linux itself is not such. Given this is my own answer to my own question, I have tested it and it worked for me.

For those needing JCE8 as well, you can download that also. Cole Stanfield Cole Stanfield 2, 1 1 gold badge 17 17 silver badges 12 12 bronze badges. This works for the JDK 6, you just need to replace the download url with the latest version. Hiro2k Hiro2k 4, 4 4 gold badges 21 21 silver badges 28 28 bronze badges. This works but I couldn't choose 6u48 because the part where you have 6ub On , could not have this to work. Downloads a HTML registration page instead of the file.