How can i make a webservice call from javascript

Question

0.00/5 (No votes)

See more:

Hi,

I created a web service call in netbeans using an online tutorial. It works great except that the web service loads when the page is loaded. how can i change it so that the webservice gets called when a link or icon is clicked?

below is the code that it generated

JavaScript

<%
     try {
         webservice.CalculatorService service = new webservice.CalculatorService();
         webservice.Calculator port = service.getCalculatorPort();
         int nodeType = 0;
         java.lang.String result = port.treeList(nodeType);
     } catch (Exception ex) {
         //out.println("Error " + ex);
     }
%>

can i make this into a function where it can be called from a link or button click on the jsp page?

Posted 28-Nov-11 1:05am

boude

Add a Solution

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Skynet_Code · Answer 1 · 2011-11-29T03:32:00

Hi.
I'm an "old school" developer, so you may take this response as a joke. Simply by changing the flow of the page guided by a request parameter, you can write client HTML code in one flow, and in other flow call the WS by the request parameter argumented in that call. For example, suppose this is your JSP page (test.jsp) :

...
<![CDATA[<%
         if (request.getParameter("yesWeCan") != null){
             try {             
               webservice.CalculatorService service = new webservice.CalculatorService();
               webservice.Calculator port = service.getCalculatorPort();
               int nodeType = 0;
               java.lang.String result = port.treeList(nodeType);             
             } catch (Exception ex) {
                 //out.println("Error " + ex);
             }
         }
	%>

...

and from your Javascript you've goto to call JSP page like this :
http://.../test.jsp?yesWeCan=true

Furthermore, when parameter "yesWeCan" is not null, you don't need to write any HTML code to the client, so you can call this in an asynchronous way using Ajax, for example.

Hope this helps.

Regards.

jjoshi · Answer 2 · 2011-11-29T16:26:00

solution is simple all you need is jquery $.ajax function and to do so i'd given a small app which i'd used in my project.

all you need to configure is provide url of you page upto it's webmethod and provide datatype it's giving as in my case i'd written json is dataType

and all set you can fetch result by result.d

url1 = "yourpage.aspx/webmethod"
$.ajax({
type: "POST",
url: url1,
contentType: "application/json; charset=utf-8",
dataType: "json",
async: true,
success: function (result) {
if (result.d == 'true') {
}
else {

}
}

});

How can i make a webservice call from javascript

2 solutions

Solution 1

Solution 2

Add your solution here

Preview 0