java - How can I better handle binary ReST resource errors when submitting a form to download those resources? -


i have service generates pdf document via form of gets rest resource based on input parameters. of these entries map request path's , others map optional request arguments such following illustrates rest resource.

/api/invoices/{invoicenumber}?format={format}

on form submission rewrite action on form match resource uri. if invoice number not exist resource return 404 or other error code required based on error condition.

i can fix instead setting error message on page, forms target _blank open new window form redisplayed in target window correct error message of course form blank.

i rather prefer document handled via asynchronous ajax request detect , handle error messages/conditions appropriately i'm not sure if possible (with jquery).

i don't think it's possible conditionally open window because have downloaded content parent window @ point. may possible using jquery typically sending content between windows troublesome , fragile.

what instead on form submit

  • open new window alternate action, e.g., fileshowaction, restful url passed parameter
  • have new window submit url via jquery or form
  • if there's error can show error ok or timer close window

option 2

show file in jquery inline dialog iframe

option 3

have initial rest call either return html errors, etc., or redirect file location. there several other alternatives using semantics of rest e.g., using location header.


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