I am building a webapp that will display PDFs. The PDFs have fillable forms. Instead of making the user save the form, and then re-upload it to the webapp, the idea is to adapt the PDF such that it can POST itself (when the user clicks) from inside the browser to some HTTPS endpoint when the user is done.
Is this doable? If so, how? If not, any suggestions? Thanks.
Yes, there is an option (action) that allows pdfs to post themselves. The steps are as follows:
List item
Open Adobe Acrobat Pro
Select the button tool
Add submit form button
Add the url and how you want the form to be submitted. You're done.
The warning shown when the user clicks the "submit a form" button.
This can also be done in Adobe LiveCycle.
来源：https://stackoverflow.com/questions/4631008/can-a-pdf-fillable-form-post-itself-to-an-https-url