Invoking WebService using JavaScript

Question

I want to invoke a service from javascript and then to display the response data in html file. Is it possible? Have anyone done this before? Any pointers or solution will be helpful. Thanks

Request Message:

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:log="http://login">
   <soapenv:Header/>
   <soapenv:Body>
      <log:validateLogin>
         <log:login>
            <log:password>password</log:password>
            <log:username>username</log:username>
         </log:login>
      </log:validateLogin>
   </soapenv:Body>
</soapenv:Envelope>

Response Message:

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
   <soapenv:Body>
      <validateLoginResponse xmlns="http://login">
         <validateLoginReturn>true</validateLoginReturn>
      </validateLoginResponse>
   </soapenv:Body>
</soapenv:Envelope>

I need to create the request soap message, send it to service, and read the response.

What kind of webservice? Rest-based services are no problem, when they support JSONP. Your main obstacle will be the same origin policy. — Sirko
– Sirko, Commented Mar 13, 2012 at 10:24
@GovindKamalaPrakashMalviya, Yes Webservice is on different domain, so looking to get thro' it — Ahamed
– Ahamed, Commented Mar 14, 2012 at 9:34
@Ahamed, you can'r call cross domain Ajax (only ajax is option to call any service from javascript), you can use only JSONP for cross domain, you have to use server side scripting for soap web services. — Govind Malviya
– Govind Malviya, Commented Mar 14, 2012 at 9:38

Amritpal Singh · Accepted Answer · 2012-03-13 10:26:49Z

1

You can try

var id=1;
$.ajax({
    type: 'post',
    url: '../webservice.asmx/yourmethod',
    contentType: "application/json; charset=utf-8",
    data:{'id':id}
    dataType: "json",
    beforeSend: function () {
    //show wait
    },
    success: function (msg) {
        if (msg.d != null) {
        //result is obtained
        }
    }
});

answered Mar 13, 2012 at 10:26

Amritpal Singh

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3 Comments

Ahamed Over a year ago

Where do I have to send the request strings, say logon credentials?

Ahamed Over a year ago

@Amritpal Singh, I just tried as you mentioned, but getting javascript error as follows.

XMLHttpRequest cannot load http://localhost:8080/Service/services/GreetingService/getWelcomeMessage. Origin null is not allowed by Access-Control-Allow-Origin.

How to resolve this. I am doing for test service, which is hosted in localhost. Apache tomcat server 1.7.

Amritpal Singh Over a year ago

I think you are trying cross domain webservice for that you just check the link simple-talk.com/dotnet/asp.net/…

Luca · Accepted Answer · 2012-03-13 11:30:12Z

1

see http://www.local-guru.net/blog/2010/1/24/calling-webservices-from-mootools-jquery-or-dojo

answered Mar 13, 2012 at 11:30

Luca

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