• Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other Pie Elite all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Paul Clapham
  • Ron McLeod
  • paul wheaton
  • Devaka Cooray
Sheriffs:
  • Jeanne Boyarsky
  • Tim Cooke
  • Liutauras Vilda
Saloon Keepers:
  • Tim Moores
  • Tim Holloway
  • Stephan van Hulst
  • Carey Brown
  • Piet Souris
Bartenders:
  • salvin francis
  • Mikalai Zaikin
  • Himai Minh

why can't use request.getParameter when jsp form's enctype is "multipart/form-data"

 
Ranch Hand
Posts: 46
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
i use oreilly's com.oreilly.servlet.MultipartRequest for upload file ,and the code was write in a struts action:

in a jsp,the code is:



now i need refresh that jsp,because there is a "select" in jsp,when use "select",a javascript function was invoke.
and the code is :


i need use request.getParameter in this jsp,so i can remeber what i have selected last time..
how can i use request.getParameter when there is enctype in form.
because if there is enctype in form ,request.getParameter always return null.
 
Ranch Hand
Posts: 1561
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
https://coderanch.com/t/355356/Servlets/java/Servlets-HTML-forms-multipart-form
 
alex han
Ranch Hand
Posts: 46
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
thanks.but now i only want to know,when i use enctype="multipart/form-data" in jsp. how can i get the value that should return by request.getParameter
 
Ranch Hand
Posts: 299
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
If you'r eusing a 3rd-party library for the parsing, it usually has methods to get the parameters. If you're doing it yourself, it's tricky but doable. I did it with my upload web-app FileNabber - http://fn.filenabber.com

You should be able to look at the source of any of the 3rd-party libraries and see how they did it.

brian
 
You showed up just in time for the waffles! And this tiny ad:
Building a Better World in your Backyard by Paul Wheaton and Shawn Klassen-Koop
https://coderanch.com/wiki/718759/books/Building-World-Backyard-Paul-Wheaton
reply
    Bookmark Topic Watch Topic
  • New Topic