import javax.xml.soap.*;
import java.util.Iterator;
import java.net.URL;
import java.io.*;

public class Client {

    public static void main(String[] args) {
        try {
            SOAPConnectionFactory soapConnectionFactory = SOAPConnectionFactory.newInstance();
            SOAPConnection connection = soapConnectionFactory.createConnection();
            SOAPMessage message = prepareMessage();

            System.out.print("\nPrinting the message that is being sent: \n\n");
            message.writeTo(System.out);
            System.out.println("\n\n");

            URL endpoint = new URL("https://opendap.co-ops.nos.noaa.gov/axis/services/WaterLevelVerifiedDaily");
            SOAPMessage response = connection.call(message, endpoint);
            connection.close();

            /*
            System.out.println("\nPrinting the respone that was recieved: \n\n");
            response.writeTo(System.out);
             */

            //Uncoment this part if you want the response to be saved locally in an XML file
            /*
            FileOutputStream fout = new FileOutputStream ("SoapResponse.xml");
            response.writeTo(fout);
            fout.close();
             */

            //You can also stores the response as a String
            /*
            ByteArrayOutputStream out = new ByteArrayOutputStream();
            response.writeTo( out );
            String str = out.toString();  
             */

            System.out.println("\n\nIterating through the response object to get the values:\n\n");
            SOAPBody responseBody = response.getSOAPBody();

            //Checking for errors
            if (responseBody.hasFault()) {
                SOAPFault fault = responseBody.getFault();
                String actor = fault.getFaultActor();
                System.out.println("Fault contains: ");
                System.out.println("Fault code: " + fault.getFaultCodeAsName().getQualifiedName());
                System.out.println("Fault string: " + fault.getFaultString());
                if (actor != null) {
                    System.out.println("Actor: " + actor);
                }
            } else {
                Iterator iterator = responseBody.getChildElements();
                Iterator iterator2 = null;
                Iterator iterator3 = null;

                String tagName = null;
                SOAPElement se = null;

                if (iterator.hasNext()) {
                    se = (SOAPElement) iterator.next();
                    iterator = se.getChildElements();
                    while (iterator.hasNext()) {
                        se = (SOAPElement) iterator.next();
                        printMetadata(se);
                        tagName = se.getElementName().getLocalName();
                        if ("data".equals(tagName)) {
                            iterator2 = se.getChildElements();
                            while (iterator2.hasNext()) {
                                se = (SOAPElement) iterator2.next();
                                iterator3 = se.getChildElements();
                                while (iterator3.hasNext()) {
                                    se = (SOAPElement) iterator3.next();
                                    printData(se);
                                }
                            }
                        }
                    }
                }
            }

        } catch (SOAPException e) {
            System.err.println("ERROR: ******* " + e.toString());
        } catch (IOException io) {
            System.err.println("ERROR: ******* " + io.toString());
        }
    }

    public static SOAPMessage prepareMessage() {
        SOAPMessage message = null;
        try {
            SOAPFactory soapFactory = SOAPFactory.newInstance();

            MessageFactory factory = MessageFactory.newInstance();
            message = factory.createMessage();

            SOAPBody body = message.getSOAPBody();
            Name bodyName = soapFactory.createName("getWLVerifiedDailyAndMetadata", "water",
                    "https://opendap.co-ops.nos.noaa.gov/axis/webservices/waterlevelverifieddaily/wsdl");
            SOAPBodyElement bodyElement = body.addBodyElement(bodyName);

            //Constructing the body for the request
            Name name = soapFactory.createName("stationId");
            SOAPElement symbol = bodyElement.addChildElement(name);
            symbol.addTextNode("9044020");
            name = soapFactory.createName("beginDate");
            symbol = bodyElement.addChildElement(name);
            symbol.addTextNode("20060101");
            name = soapFactory.createName("endDate");
            symbol = bodyElement.addChildElement(name);
            symbol.addTextNode("20060103");
            name = soapFactory.createName("datum");
            symbol = bodyElement.addChildElement(name);
            symbol.addTextNode("IGLD");
            name = soapFactory.createName("unit");
            symbol = bodyElement.addChildElement(name);
            symbol.addTextNode("0");
        } catch (SOAPException e) {
            System.err.println("ERROR: ******* " + e.toString());
        }
        return message;
    }

    public static void printMetadata(SOAPElement se) {
        String tagName = se.getElementName().getLocalName();
        if (tagName != null) {
            if ("stationId".equals(tagName)) {
                System.out.println("Printing Metadata \n");
                System.out.println("Station ID       : " + se.getValue());
            } else if ("stationName".equals(tagName)) {
                System.out.println("station Name     : " + se.getValue());
            } else if ("latitude".equals(tagName)) {
                System.out.println("Latitude         : " + se.getValue());
            } else if ("longitude".equals(tagName)) {
                System.out.println("Longitude        : " + se.getValue());
            } else if ("state".equals(tagName)) {
                System.out.println("State            : " + se.getValue());
            } else if ("dataSource".equals(tagName)) {
                System.out.println("Data Source      : " + se.getValue());
            } else if ("beginDate".equals(tagName)) {
                System.out.println("Begin Date       : " + se.getValue());
            } else if ("endDate".equals(tagName)) {
                System.out.println("End Date         : " + se.getValue());
            } else if ("datum".equals(tagName)) {
                System.out.println("Datum            : " + se.getValue());
            } else if ("unit".equals(tagName)) {
                System.out.println("Unit             : " + se.getValue());
            } else if ("timeZone".equals(tagName)) {
                System.out.println("Time Zone        : LST" + "\n");
                System.out.println("Printing the data \n");
            }
        }
    }

    public static void printData(SOAPElement se) {
        String tagName = se.getElementName().getLocalName();
        if (tagName != null) {
            if (tagName.equals("timeStamp")) {
                System.out.println("Time Stamp  : " + se.getValue());
            } else if (tagName.equals("Mean")) {
                System.out.println("Mean        : " + se.getValue());
            } else if (tagName.equals("I")) {
                System.out.println("I           : " + se.getValue());
            } else if (tagName.equals("L")) {
                System.out.println("L           : " + se.getValue() + "\n");
            }
        }
    }
}
/****************************************************
SAMPLE RUN
 
>java Client
 
Printing the message that is being sent:
 
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">
    <SOAP-ENV:Header/>
    <SOAP-ENV:Body>
        <water:getWLVerifiedDailyAndMetadata xmlns:water="https://opendap.co-ops.nos.noaa.gov/axis/webservices/waterlevelverifieddaily/wsdl">
            <stationId>9044020</stationId>
            <beginDate>20060101</beginDate>
            <endDate>20060103</endDate>
            <datum>IGLD</datum>
            <unit>0</unit>
        </water:getWLVerifiedDailyAndMetadata>
    </SOAP-ENV:Body>
</SOAP-ENV:Envelope>
 
Iterating through the response object to get the values:
 
Printing Metadata 

Station ID       : 9044020
station Name     : Gibraltar
Latitude         : 42.0909
Longitude        : -83.186
State            : MI
Data Source      : USDOC/NOAA/NOS/COOPS(Center for Operational Oceanographic Products and Services)
Begin Date       : 20060101
End Date         : 20060103
Datum            : IGLD
Unit             : Meters
Time Zone        : LST

Printing the data 

Time Stamp  : 2006-01-01 00:00:00.0
Mean        : 173.966
I           : 0
L           : 0

Time Stamp  : 2006-01-02 00:00:00.0
Mean        : 174.161
I           : 0
L           : 0

Time Stamp  : 2006-01-03 00:00:00.0
Mean        : 174.037
I           : 0
L           : 0

**********************************************************/