How to consume a web service from VB6

deploymentsoapvb6web services

I need to consume an external web service from my VB6 program. I want to be able to deploy my program without the SOAP toolkit, if possible, but that's not a requirement. I do not have the web service source and I didn't create it. It is a vendor-provided service.

So outside of the SOAP toolkit, what is the best way to consume a web service from VB6?

Best Answer

I use this function to get data from a web service.

Private Function HttpGetRequest(url As String) As DOMDocument
    Dim req As XMLHTTP60
    Set req = New XMLHTTP60
    req.Open "GET", url, False
    req.send ""

    Dim resp As DOMDocument
    If req.responseText <> vbNullString Then
        Set resp = New DOMDocument60
        resp.loadXML req.responseText
    Else
        Set resp = req.responseXML
    End If
    Set HttpGetRequest = resp
End Function

Related Solutions

Ios – How to access SOAP services from iPhone

One word: Don't.

OK obviously that isn't a real answer. But still SOAP should be avoided at all costs. ;-) Is it possible to add a proxy server between the iPhone and the web service? Perhaps something that converts REST into SOAP for you?

You could try CSOAP, a SOAP library that depends on libxml2 (which is included in the iPhone SDK).

I've written my own SOAP framework for OSX. However it is not actively maintained and will require some time to port to the iPhone (you'll need to replace NSXML with TouchXML for a start)

Java – Simply consuming a web service in Java

I can recommend you CXF library. Using it you will have several options for calling web services:

Use dynamic proxy for calling (don't need to make Java stubs using wsdl2java).

DynamicClientFactory dcf = DynamicClientFactory.newInstance();
Client client = dcf.createClient("http://admin:password@localhost:8080"+
                                 "/services/MyService?wsdl");
Object[] a = client.invoke("test", "");
System.out.println(a);

Using Java stub generated from WSDL, using wsdl2java.
If your server was created using CXF you can reuse your interface code directly (instead of using wsdl2java on the WSDL which was created from your interface!)

For both #2 and #3, the following code exemplifies the CXF usage:

JaxWsProxyFactoryBean factory = new JaxWsProxyFactoryBean();
factory.setAddress("http://admin:password@localhost:8080/services/MyService");
factory.setServiceClass(ITest.class);
ITest client = (ITest) factory.create();
client.test();

Best Answer

Related Solutions

Ios – How to access SOAP services from iPhone

Java – Simply consuming a web service in Java

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