/* An Example XML Request */
string xmlRequest = '
<request>
    <auth>
        <type>basic</type>
    </auth>
    <method>
        <name>required_service_name</name>
        <params>
            use the parameters required for the web service here
        </params>
    </method>
</request>';


/* An Example JSON Request */
string jsonRequest = '
{
    "auth": {
        "type" : "basic"
    },
    "method": {
        "name": "required_service_name",
        "params": {
            use the parameters required for the web service here
        }
    }
}';


/* Initiate a Web Request object */
HttpWebRequest webRequest = null;
webRequest = WebRequest.Create(' REPLACE THIS WITH THE WEB SERVICE URL ') as HttpWebRequest;
webRequest.Method = 'POST';
webRequest.Headers.Add("Authorization", "Basic <BASE64 ENCODED VALUE OF USERNAME:PASSWORD>");


/* Initiate the request writer */
StreamWriter requestWriter = new StreamWriter(webRequest.GetRequestStream());


/* If you want to send an XML Request, use these options */
webRequest.ContentType = 'APPLICATION/XML; CHARSET=UTF-8';
requestWriter.Write(xmlRequest);


/* If you want to send an XML Request, use these options */
webRequest.ContentType = 'APPLICATION/JSON; CHARSET=UTF-8';
requestWriter.Write(jsonRequest);


requestWriter.Close();


/* Read the response */
StreamReader responseReader = new StreamReader(webRequest.GetResponse().GetResponseStream());
string responseData = responseReader.ReadToEnd();
responseReader.Close();

/* An Example XML Request */
string xmlRequest = '
<request>
    <auth>
        <type>basic</type>
    </auth>
    <method>
        <name>required_service_name</name>
        <params>
            use the parameters required for the web service here
        </params>
    </method>
</request>';


/* An Example JSON Request */
string jsonRequest = '
{
    "auth": {
        "type" : "basic"
    },
    "method": {
        "name": "required_service_name",
        "params": {
            use the parameters required for the web service here
        }
    }
}';
import java.io.InputStream;
import org.apache.commons.httpclient.HttpClient;
public class PostExample {


    public static void main(String[] args){


        HttpClient httpClient = new DefaultHttpClient();
        try {
            HttpPost request = new HttpPost("REPLACE THIS WITH THE WEB SERVICE URL");
            request.addHeader("Authorization", "Basic <BASE64 ENCODED VALUE OF USERNAME:PASSWORD>");


            /* If you want to send an XML Request, use these options */
            StringEntity params = new StringEntity(xmlRequest);
            request.addHeader("content-type", "APPLICATION/XML; CHARSET=UTF-8");
            request.setEntity(params);


            /* If you want to send an JSON Request, use these options */
            StringEntity params = new StringEntity(jsonRequest);
            request.addHeader("content-type", "APPLICATION/JSON; CHARSET=UTF-8");
            request.setEntity(params);


            HttpResponse response = httpClient.execute(request);


            // handle response here...
            System.out.println(response);
        }catch (Exception ex) {
            // handle exception here
            ex.printStackTrace();
        } finally {
            httpClient.getConnectionManager().shutdown();
        }
    }
}

/* An Example XML Request */
$xmlRequest = '
<request>
    <auth>
        <type>basic</type>
    </auth>
    <method>
        <name>required_service_name</name>
        <params>
            use the parameters required for the web service here
        </params>
    </method>
</request>';


/* An Example JSON Request */
$jsonRequest = '
{
    "auth": {
        "type" : "basic"
    },
    "method": {
        "name": "required_service_name",
        "params": {
            use the parameters required for the web service here
        }
    }
}';


/* Initiate a CURL resource */
$resCurl = curl_init();


/* If you want to send an XML Request, use these options */
curl_setopt( $resCurl, CURLOPT_HTTPHEADER,  array( 'Content-type: APPLICATION/XML; CHARSET=UTF-8', 'Authorization: Basic <BASE64 ENCODED VALUE OF USERNAME:PASSWORD>' ) );
curl_setopt( $resCurl, CURLOPT_POSTFIELDS, $xmlRequest );


/* If you want to send a JSON Request, use these options */
curl_setopt( $resCurl, CURLOPT_HTTPHEADER,  array( 'Content-type: APPLICATION/JSON; CHARSET=UTF-8', 'Authorization: Basic <BASE64 ENCODED VALUE OF USERNAME:PASSWORD>' ) );
curl_setopt( $resCurl, CURLOPT_POSTFIELDS, $jsonRequest );


curl_setopt( $resCurl, CURLOPT_POST, true );
curl_setopt( $resCurl, CURLOPT_URL, REPLACE THIS WITH THE WEB SERVICE URL );
curl_setopt( $resCurl, CURLOPT_RETURNTRANSFER, 1);


$result = curl_exec( $resCurl );
if( false === $result ) {
    echo 'Curl error: ' . curl_error( $resCurl );
    curl_close( $resCurl );
} else {
    curl_close( $resCurl );
    echo $result;
}