CODEWITHSUNDEEP
jsf
user1924104
user1924104

Reputation: 901

How to display an pdf once uploaded with jsf

I have created a file upload function which saves all the uploads to a certain place:

private String destination = "D:/Documents/NetBeansProjects/FileUpload/uploadedDocuments/";

Is this a good place to store it? Should I store it some where else?

Is it possible that once the upload is complete for a page to be displayed showing the user what they have just uploaded, like a box below showing a preview? And how would I go about doing this? I am new.

I have figured it out how to display a plain txt file and an image, however it is the pdf that is confusing me.

Upvotes: 1

Views: 1526

Answers (1)

BalusC
BalusC

Reputation: 1108692

As to the upload location, which seems to be the IDE project folder, that's absolutely not right. You should choose a configureable and fixed location somewhere outside the IDE project folder. You should not rely on using getRealPath() or relative paths in java.io.File. It would make your webapp unportable. See also this related question: Uploaded image only available after refreshing the page.

Whatever way you choose based on the information provided in the answer of the aforementioned question (and all links therein), you should ultimately end up having a valid URL pointing to the PDF file in question such as http://example.com/files/some.pdf.

Then, you can serve the PDF file on a webpage using either an <iframe>:

<iframe src="/files/some.pdf" width="600" height="400"></iframe>

Or an <object>:

<object data="/files/some.pdf" type="application/pdf" width="600" height="400">
    <a href="/files/some.pdf">some.pdf</a> <!-- This link will only show up when the browser doesn't support showing PDF. -->
</object>

Keep in mind that showing PDFs in a browser is only supported in browsers having Adobe Reader plugin. Note that the <object> approach will gracefully degrade to a link when the browser doesn't support displaying application/pdf content.

Upvotes: 2

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