Sending a soap message from soap client in java

Sending a soap message requires a server name, like --
http://localhost:13000/myservicename
13000 is port no.
Now just create a connection and write soap message to it.
We are using following imports:

import java.net.*;
import java.io.*;

Now just write the code:

URL u = new URL(server);
      URLConnection uc = u.openConnection();
      HttpURLConnection connection = (HttpURLConnection) uc;
      
      connection.setDoOutput(true);
      connection.setDoInput(true);
      connection.setRequestMethod("POST");
      connection.setRequestProperty("SOAPAction", SOAP_ACTION);
      
      OutputStream out = connection.getOutputStream();
      Writer wout = new OutputStreamWriter(out);
      
      wout.write("<?xml version='1.0'?>\r\n");  
      wout.write("<SOAP-ENV:Envelope ");
      wout.write("xmlns:SOAP-ENV=");
      wout.write(
        "'http://schemas.xmlsoap.org/soap/envelope/' "
      );
      wout.write("xmlns:xsi=");
      wout.write(
        "'http://www.w3.org/2001/XMLSchema-instance'>\r\n"); 
      wout.write("  <SOAP-ENV:Body>\r\n");
      wout.write("    <calculateFibonacci ");
      wout.write(
    "xmlns='http://namespaces.cafeconleche.org/xmljava/ch3/'\r\n"
      ); 
      wout.write("    type='xsi:positiveInteger'>" + input 
       + "</calculateFibonacci>\r\n"); 
      wout.write("  </SOAP-ENV:Body>\r\n"); 
      wout.write("</SOAP-ENV:Envelope>\r\n"); 
      
      wout.flush();
      wout.close();
      
      InputStream in = connection.getInputStream();
      int c;
      while ((c = in.read()) != -1) System.out.write(c);
      in.close();

How to validate URL in Java?

You can use org.apache.commons.validator.routines.UrlValidator class (ver 1.4) or apache.commons.validator.UrlValidator class to validate a given URL. The new UrlValidator is in the routines package and the apache.commons.validator.UrlValidator class will be removed in a future release. Here is an example,

public class ValidateUrlExample{
 
    public static void main(String[] args) {
        System.out.println("*** doUserSpecifiedSchemes ***");
        doUserSpecifiedSchemes();
        System.out.println("\n*** doDefaultSchemes ***");
        doDefaultSchemes();
    }
   
    public static void doUserSpecifiedSchemes() {
       
        String[] schemes = {"http","https"};
        UrlValidator urlValidator = new UrlValidator(schemes);

        String url = "http://foo.bar.com/";
        if (urlValidator.isValid(url)) {
            System.out.println(url + " is valid");
        }
        else {
            System.out.println(url + " is invalid");
        }
       
        url = "ftp://foo.bar.com/";
        if (urlValidator.isValid(url)) {
            System.out.println(url + " is valid");
        }
        else {
            System.out.println(url + " is invalid");
        }
       
    }
   
    public static void doDefaultSchemes() {
       
        UrlValidator urlValidator = new UrlValidator();

        String url = "http://foo.bar.com/";
        if (urlValidator.isValid(url)) {
            System.out.println(url + " is valid");
        }
        else {
            System.out.println(url + " is invalid");
        }
       
        url = "ftp://foo.bar.com/";
        if (urlValidator.isValid(url)) {
            System.out.println(url + " is valid");
        }
        else {
            System.out.println(url + " is invalid");
        }
    }

}

output:
*** doUserSpecifiedSchemes ***
http://foo.bar.com/ is valid
ftp://foo.bar.com/ is invalid

*** doDefaultSchemes ***
http://foo.bar.com/ is valid
ftp://foo.bar.com/ is valid