This week's giveaway is in the Spring forum.
We're giving away four copies of Microservices Testing (Live Project) and have Chris Love & Andres Sacco on-line!
See this thread for details.
Win a copy of Microservices Testing (Live Project) this week in the Spring forum!
  • 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
  • Tim Cooke
  • Ron McLeod
  • Jeanne Boyarsky
  • Paul Clapham
Sheriffs:
  • Liutauras Vilda
  • Henry Wong
  • Devaka Cooray
Saloon Keepers:
  • Tim Moores
  • Stephan van Hulst
  • Tim Holloway
  • Al Hobbs
  • Carey Brown
Bartenders:
  • Piet Souris
  • Mikalai Zaikin
  • Himai Minh

invoke a java function onSubmit of the form

 
Greenhorn
Posts: 21
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
I have a JSP page with a form inside of it. 'onSubmit' of the form, I want to invoke a java function with a value of the form.
I am adding part of my code here:

<form action="www.yahoo.com" id="hiddenform" name="hiddenform" method="post" onSubmit="<%getResponseValue(out.println("><script>this.ResponseType.value</script>"));%>">

<select name="ResponseType">
<option value="Default">Default</option>
<option value="Sucess">Sucess</option>
<option value="Failure">Failure</option>
<option value="Retry">Retry</option>
</select>
</form>

And here is my java function in the same file:

<%!String getResponseValue(String responseVal){
System.out.println("this is the responsevalue"+responseVal);
return responseVal;
}%>



Could you please let me know, why I am getting an error like below:
'void' type not allowed here
getResponseValue(out.println("<script>this.ResponseType.value</script>")); //[ /Admin.jsp; Line: 49]
^
1 error

 
Ranch Hand
Posts: 2458
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Look like you're confusing Javascript with Java.

First step is to stop using scriptlets. It would only increase the confusion. Write raw Java code in Java classes (e.g. servlets, javabeans, dao classes, etc) and use taglibs/EL to control the presentation flow.

Second step is to learn Javascript/HTML DOM properly. There are good tutorials available at w3schools.com.

Just keep this in mind: Java/JSP runs at the server machine and produces a HTML/CSS/JS page, which is been sent from server machine to client machine, in the client machine the webbrowser will start to display HTML/CSS and run JS. Do a 'view source' in your webbrowser, you'll notice that there is no means of JSP/Java. All the HTML event handlers (the on* attributes) are only capable of running JS.
 
Sheriff
Posts: 67650
173
Mac Mac OS X IntelliJ IDE jQuery TypeScript Java iOS
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
This article should be helpful in understanding why what you are trying to do makes no sense.
 
With a little knowledge, a cast iron skillet is non-stick and lasts a lifetime.
reply
    Bookmark Topic Watch Topic
  • New Topic