How to test the availability of WSDL programmatically using Java

Question

This means i would NOT use SoapUI, or any other Application to test the WSDL.

i am looking at wsdl4j as this is potentially the only one out there, unless i am missing something available in jdk.

Here is what i tried:

class : WSDLtestvip.java

import java.net.HttpURLConnection;
import java.net.URL;

public class WSDLtestvip {



    public boolean isWSDLAvailable(String wsdlAddr) {
        HttpURLConnection c = null;
        try {
            URL u = new URL(wsdlAddr);
            c = (HttpURLConnection) u.openConnection();
            c.setRequestMethod("HEAD");
            c.getInputStream();
            return c.getResponseCode() == 200;
        } catch (Exception e) {
            return false;
        } finally {
            if (c != null)
                c.disconnect();
        }

    }
}

class: WsdlTester.java

public class WsdlTester {

    public static void main(String[] args) {

        WSDLtestvip wstvip = new WSDLtestvip();
        boolean result = wstvip
                .isWSDLAvailable("https://a.b.c/aaa?wsdl");

        System.out.println(result);

    }

}

and it gives me false ALL the time How can i use the same for https

Did you really mean "problematically" or is it programmatically? — adarshr, Aug 14 '12 at 16:33
Check this: http://stackoverflow.com/questions/3584210/preferred-java-way-to-ping-a-http-url-for-availability — Konstantin V. Salikhov, Aug 14 '12 at 16:36
programmatically, was correcting spelling and look what i got. Thanks for pointing it out. — kamal, Aug 15 '12 at 02:13

score 4 · Accepted Answer · answered Aug 14 '12 at 16:47

4

Suggestion:

    private boolean isWSDLAvailable(String wsdlAddr) {
            HttpURLConnection c = null;
            try {
                URL u = new URL(wsdlAddr);
                c = (HttpURLConnection) u.openConnection();
                c.setRequestMethod("HEAD");
                c.getInputStream();
                return c.getResponseCode() == 200;
            } catch (Exception e) {
                return false;
            } finally {
                if (c != null) c.disconnect();
            }    
    }

And you can check content-type too, if needed.

answered Aug 14 '12 at 16:47

Jonathan Simon Prates

1,122
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28

What about HTTPS, i tried the same code with https, and got "False" returned. – kamal Aug 16 '12 at 14:52
Check Exception message. If this is a self-signed certificate, [this topic](http://stackoverflow.com/questions/859111/how-do-i-accept-a-self-signed-certificate-with-a-java-httpsurlconnection) can be useful. – Jonathan Simon Prates Aug 16 '12 at 17:15
(...) catch (Exception e) { System.out.println(e); return false; (...) – Jonathan Simon Prates Aug 16 '12 at 17:18
2

Why not just use `GET`? Some platforms (Spring-WS) will return `405 Method Not Allowed` in response to `HEAD`. – ach Feb 12 '13 at 16:44

How to test the availability of WSDL programmatically using Java

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