Active Oldest Votes. You need to set the Content-Disposition header. Improve this answer. Sotirios Delimanolis Sotirios Delimanolis k 54 54 gold badges silver badges bronze badges. Sign up or log in Sign up using Google.
Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Who owns this outage? Building intelligent escalation chains for modern SRE. Podcast Who is building clouds for the independent developer?
Remember to do response. With Spring 3. If you use this, then your controller does not need a HttpServletResponse object, and therefore it is easier to test. Except this, this answer is relative equals to the one of Infeligo. If the return value of your pdf framework is an byte array read the second part of my answer for other return values :.
Instead it is better to use:. Still, if you can provide a value, it is better. To obtain such value, know that File length should be good enough in the general case, so it is a safe default choice.
In very specific scenarios, though, it can be slow , in which case you should have it stored previously e. Slow scenarios include: if the file is very large, specially if it is on a remote system or something more elaborated like that - a database, maybe. If your resource is not a file, e. This code is working fine to download a file automatically from spring controller on clicking a link on jsp.
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. That's why this answer suggests setting the Content-Type explicitly. Sometimes it is necessary to force a download in a browser or to make the browser open a file as a preview.
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.
In the Spring Framework a ContentDisposition can be used. You can display PDF or download it examples here. If it helps anyone. You can do what the accepted answer by Infeligo has suggested but just put this extra bit in the code for a forced download. Very important is mime type in produces and also that, that name of the file is a part of the link so you has to use PathVariable.
Is it ok to export data as pdf format in frontend? Extending to this, adding content-disposition as an attachment default will download the file. If you want to view it, you need to set it to inline. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Downloading a file from spring controllers Ask Question. Asked 10 years, 7 months ago. Active yesterday. Viewed k times.
Improve this question. MilindaD MilindaD 6, 9 9 gold badges 40 40 silver badges 57 57 bronze badges. It worth mentioning that Spring Framework changed a lot since , so you can do it in a reactive way as well - here is an example — Krzysztof Skrzynecki.
With later versions of spring, you just need to return the byte array with appropriate headers in ResponseEntity. Here is a full example: allaboutspringframework. Add a comment. Active Oldest Votes. Also, if you know what file type you are sending, you can set response. Improve this answer. Jakub Kubrynski 13k 4 4 gold badges 57 57 silver badges 82 82 bronze badges.
Hi i have to do same but i need to send request header with download url for user authentication. A blog about Java and its related technologies, the best practices, algorithms, interview questions, scripting languages, and Python. About Me. Contact Us. Privacy policy. Guest Posts. Secure Hash Algorithms. Best Way to Learn Java. How to Start New Blog. Spring MVC.
0コメント