The correct sequence of operations should be to set the headers first, and then write the contents of the file to the servlet's outputstream. How to develop a Java servlet that allows the user to download a file from the server. open a PDF reader program if the response is a PDF document, etc. In case we want to force the browser always downloads the file, we. Submit comments about this document to: [email protected] Java™ effect until after the container-initiated dispatch has returned to the container.
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Hello, In my servlet I am using this code to open a pdf file in a browser, but instead it shows a download dialog box. Any help, what I am doing. Define a Java™ Servlet provided by the framework (typically a controller Java™ Servlet) . Methods added to ServletRequest to force a login and ability to logout . How can i force the browser to ask for the download prompt. May be this is not a ServletOutputStream op = ((HttpServletResponse) context. setHeader(" Content-Disposition", "attachment; filename=fyadocoodenes.tk");; response.
And, I suspect that it might get around the "content-disposition" issue. Good idea. Thanks for that. Got to admit I skipped over the octet-stream part, not really appreciating what it could do. I read that it was possible to change parameters in the server's httpd. Anyone else heard that the content-disposition header is going to be phased out of IE without a replacement? IE, Firefox download smoothly. Maybe I've missed something here, but I thought a much simpler approach to download the file would be to fool the browser into thinking that what you are downloading will need to have the "Save as" box open.
So why not just append this string to the end of the URL for the file in order to get it to do this? I made a servlet a couple years ago that would force a download of a specific type and a specific filename The servlet would be an inner 'directory' to the url:. I see this when I use a java agent in Domino 5. Have there been any good answers for that one? Have you seen any good articles on what to do about this, in general? Regards, N Wharton. I am having one problem with the servlet.
If i create a document with attachment in web and I tried to open that attachment after the save. I get page cannot be displayed and following error message in log. Agent error message: Malformed URL: I can open the attachments which are created in Lotus Notes using this servlets in browser immediatley after I saved the document. Our Server didn't have proper rights to the document.
I granted rights to that server and now it seems everything is working fine. IE6 browsers.
It's written in Perl. Instead use response. It tries to download file with added. Maybe it needs some additional header s?
In this case you must choose a smaller byte buffer. Just installed your solution a few weeks ago which works very well and I noticed that my server hard drive started running out of space. It seems that files that users downloaded are being saved on server hard drive - like a cache - at the time user does a download and it isn't being deleted after a successful download.
Is it an expected behavior of this servlet or is there a way to avoid this behavior? It seems someone writes article about flex in that blog. So you know there's at least two solutions Jake Howlett Category: Java Hat Tip: Servlet ; download ; attachment ;.
Feedback Print Friendly. Your host is Jake Howlett who runs his own web development company called Rockall Design and is always on the lookout for new and interesting work to do.
You can find me on Twitter and on Linked In. Using getRemoteUser is not the right way to make a servlet secure "in a Domino way". The right way would be to: Security Hi Jesper, Thanks for the feedback. Jake -codestore. Security I'm not sure of the detail, but there is going to be a difference in testing the user rights against the ACL, and assigning the servlet the permissions of the user according to the ACL.
Agents not good Originally I did use agents. As I said in the article, I didn't write this code and it reaching the extent of Java "capabilities" Jake -codestore.
Security Hi I still think that's the wrong way to go. You can handle the security yourself when it's simple, but in real life it is offen not. Security I think your all going about it the wrong way.
The best way to stop people from exploiting that script especially if it's just for attachments you want people to download is just create a directory specifically for the attachments, and have it coded in your script ie, unchangable in the variables That way you they can only download files from that directory, which presumably is full of files for them to download anyway.
Doesn't require any access checking or anything, just lateral thinking. I'm not questioning your idea just wondered why it makes a difference. Please enlighten. Good idea!
The content-type thing Hi Brian, Good idea. Anything that makes it IE proof has to be good Related possibilty I read that it was possible to change parameters in the server's httpd. Perhaps someone else will have more luck.
The content-type thing Anyone else heard that the content-disposition header is going to be phased out of IE without a replacement? Am I being incredibly thick? How about this - easier? Well it sounds good in theory but I can't get it to work. Have you got this to work in your own experience?
I saw a suggestion to use something like: Any idea? The servlet would be an inner 'directory' to the url: On Stopped Java Agents It can be specified at two levels: 1. User Level. This settings. Global Level.
Where appropriate, the default values values used when the setting is not specified are provided. If set to false, maven will use a sensible default value, perhaps based on some other setting, for the parameter in question. This will have an effect on artifact downloads, artifact deployment, and others. Maven will automatically add the group identifiers "org.
Unless otherwise specified by system property or command-line switch , the first proxy specification in this list marked as active will be used. Authentication profiles can be used whenever maven must make a connection to a remote server. It works like this: a POM may declare a repository to use in resolving certain artifacts.
However, this repository may have problems with heavy traffic at times, so people have mirrored it to several places. That repository definition will have a unique id, so we can create a mirror reference for that repository, to be used as an alternate download site.
The mirror site will be the preferred server for that repository. The repository that this mirror serves has an ID that matches the mirrorOf element of this mirror. IDs are used for inheritance and direct lookup purposes, and must be unique across the set of mirrors. Profiles provided in the settings. For example, if you have an integration testing plugin - like cactus - that needs to know where your Tomcat instance is installed, you can provide a variable here such that the variable is dereferenced during the build process to configure the cactus plugin.
As noted above, profiles can be activated in a variety of ways. One way - the activeProfiles section of this document settings. Another way essentially relies on the detection of a system property, either matching a particular value for the property, or merely testing its existence.
Profiles can also be activated by JDK version prefix, where a value of '1. Finally, the list of active profiles can be specified directly from the command line. NOTE: For profiles defined in the settings. An encouraged best practice for profile identification is to use a consistent naming convention for profiles, such as 'env-dev', 'env-test', 'env-production', 'user-jdcasey', 'user-brett', etc.
This will make it more intuitive to understand what the set of introduced profiles is attempting to accomplish, particularly when you only have a list of profile id's for debug. To use this, your plugin configuration might hypothetically look like Default files created by the Maven archetype plugin To create an archetype project, perform these steps:: 1.
When prompted for additional information, specify Y. Change the command prompt to the generated project.
1. REST API to stream file with StreamingOutput
Run the following Maven command: mvn eclipse:eclipse After you run this command, you can import the project into Eclipse as discussed in the next section. Add Java files to the Maven project using Eclipse To make it easier to work with the Maven generated project, import it into the Eclipse development environment, as shown in the following illustration.
The Java class, named DownloadAssets, that you create in this section extends the Sling class named org. This class supports the doGet method that lets you sent a request to the servlet and get back a response in this use case, the response is a ZIP file.
In this development article, a QueryBuilder instance is injected into the doGet method. This instance is required to create a Session instance that lets you create a Query instance.
To inject a ResourceResolverFactory instance, you use the Reference annotation to define a class member, as shown in the following example. Later in this article, this is invoked using an href tag. Thank you!!
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Permalink to comment January 23, Sam Miller. Permalink to comment February 1, Permalink to comment February 6, Permalink to comment February 16, In that file put the following lines: Header set Content-Disposition attachment This particular example will force files with doc, mov, pdf, rtf, or txt to download instead of being shown in the browser. Permalink to comment March 10, Permalink to comment February 15, Permalink to comment May 14, Chosen 1 Design.
Permalink to comment March 28, This was just what I was looking for and very helpful. Gotta love. Permalink to comment April 27, Permalink to comment January 16, Permalink to comment May 16, Permalink to comment June 19, Lindy Dobbins. Permalink to comment July 13, Alysha Hayse.
Permalink to comment June 26, Permalink to comment March 16, Mustafa Contractor. Permalink to comment August 23, Permalink to comment October 31, Any suggestions? Permalink to comment November 23, Where would it download to? Robert Piller. Permalink to comment January 21, Hey Craig, Did you find an answer to this?
Permalink to comment November 13, Is there a way to force the whole download? We considered off-loading the files, but the bandwidth costs at site would be more than our revenue… We need a way to prevent iOS devices from automatically playing nekkid MP3 links. Permalink to comment December 29, I hope future HTML version allow such an option.
Permalink to comment January 6, Scott H. Permalink to comment February 11, I would not use this approach as it currently prevents Chrome users from downloading the file. A link to a PDF it will not do anything when a Chrome user clicks on it. Permalink to comment March 1, Is he correct and am I asking for something particularly complex?: Permalink to comment October 11, James Williams.
Permalink to comment March 13, Permalink to comment July 12, Permalink to comment April 12, Hey all, I made a. Any other ideas or am I doing something wrong?
Permalink to comment August 15, I used: Hope this helps! Permalink to comment April 19, Hey guys can someone leave a code?!
Permalink to comment April 25, Now you can also do this with HTML5. Giovanni Pires da Silva. Permalink to comment May 22, Hi I have a client who wants to do the opposite. Permalink to comment June 13, Permalink to comment September 27, Permalink to comment October 12, Do not work in Chrome version Tried solutions from comments as well — any hints? Permalink to comment January 30, Best way to do that is this: Permalink to comment February 5, This is for a new plug in.
Is there anyway to have this only for one specific pdf vs all pdfs on the server? Permalink to comment June 24, Thanks, Moe. Permalink to comment March 18, Caleb G. Permalink to comment September 6, Hoang Minh. Permalink to comment November 4, Hope helps you! Permalink to comment December 23, Permalink to comment July 31, Firefox, Chrome, Opera, Android Browser and Chrome for Android support the download attribute on links, mentioned by a couple of other commentators: Permalink to comment August 3, Permalink to comment September 2, Caleb G — thanks — that worked for me.
Bob Thompson. Permalink to comment September 15, Thank you.
Permalink to comment March 5, Elad Karako. Permalink to comment January 12, Header unset X-Content-Type-Options Header unset Content-Disposition prevent mimetype sniffing first few bytes can determine that a file should be opened in browser.
Gabriel O. Permalink to comment November 7, Permalink to comment January 18, How can i download php file using. Ankur Shrivastava. Omit the dot before file extensions then it would work.
Permalink to comment October 27, When i put someone link on my post, its redirecting visitors to his home page, how to fix pls.
Permalink to comment December 24, Download the files I've attached to this document. Dictionary; import java. I need to download. Using getRemoteUser is not the right way to make a servlet secure "in a Domino way". Build a Database App. Note: If you deploy the package that is shown at the start of this artilce, you can skip these steps and read the article to understand the concepts. Can you override this and force the browser to open in a new window!? This will have an effect on artifact downloads, artifact deployment, and others.
You can think of a component as a collection of scripts for example, JSPs, Java servlets, and so on that completely realize a specific function.