GetCountryInfo - wersja z pętlą i XPath

SAAJ_Klient/src/main/java/saaj_klient/countries/GetCountryInfo_Interaktywnie.java

+package saaj_klient.countries;
+
+import jakarta.xml.soap.*;
+import org.w3c.dom.NodeList;
+
+import javax.swing.*;
+import javax.xml.namespace.NamespaceContext;
+import javax.xml.namespace.QName;
+import javax.xml.xpath.XPath;
+import javax.xml.xpath.XPathConstants;
+import javax.xml.xpath.XPathExpressionException;
+import javax.xml.xpath.XPathFactory;
+import java.io.IOException;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Scanner;
+
+public class GetCountryInfo_Interaktywnie {
+    static final String NS = "http://www.oorsprong.org/websamples.countryinfo";
+
+    public static void main(String[] args) {
+
+        NamespaceContext nsCtx = new NamespaceContext() {
+            @Override
+            public String getNamespaceURI(String prefix) {
+                if("w".equals(prefix))
+                    return NS;
+                return null;
+            }
+
+            @Override
+            public String getPrefix(String namespaceURI) {
+                if(NS.equals(namespaceURI))
+                    return "w";
+                return null;
+            }
+
+            @Override
+            public Iterator<String> getPrefixes(String namespaceURI) {
+                return List.of("w").iterator();
+            }
+        };
+
+        try {
+            MessageFactory mf = MessageFactory.newInstance();
+            SOAPConnectionFactory scf = SOAPConnectionFactory.newInstance();
+            XPathFactory xpf = XPathFactory.newInstance();
+            XPath xpath = xpf.newXPath();
+            xpath.setNamespaceContext(nsCtx);
+            Scanner scanner = new Scanner(System.in);
+            try (SOAPConnection connection = scf.createConnection()) {
+                while(true) {
+                    System.out.print("Podaj kod kraju: ");
+                    String szukanyKraj = scanner.nextLine();
+                    if(szukanyKraj.isEmpty()) break;
+
+                    SOAPMessage request = mf.createMessage();
+                    SOAPBody requestBody = request.getSOAPBody();
+                    SOAPBodyElement fullCountryInfo = requestBody.addBodyElement(new QName(NS, "FullCountryInfo"));
+                    SOAPElement parametr = fullCountryInfo.addChildElement(new QName(NS, "sCountryISOCode"));
+                    parametr.setTextContent(szukanyKraj);
+
+                    System.out.println("Zapytanie:");
+                    request.writeTo(System.out);
+
+                    System.out.println("\n\nWysyłam...");
+                    SOAPMessage response = connection.call(request, "http://webservices.oorsprong.org/websamples.countryinfo/CountryInfoService.wso");
+                    SOAPBody responseBody = response.getSOAPBody();
+
+                    System.out.println("Mam odpowiedź:");
+                    response.writeTo(System.out);
+                    System.out.println();
+
+                    System.out.println("Nazwa kraju: " + xpath.evaluate(".//w:sName", responseBody));
+                    System.out.println("Stolica: " + xpath.evaluate(".//w:sCapitalCity", responseBody));
+                    System.out.println("Waluta: " + xpath.evaluate(".//w:sCurrencyISOCode", responseBody));
+                    System.out.println("Języki:");
+                    NodeList languages = (NodeList) xpath.evaluate(".//w:tLanguage", responseBody, XPathConstants.NODESET);
+                    final int n = languages.getLength();
+                    for (int i = 0; i < n; i++) {
+                        String lang = xpath.evaluate("w:sName", languages.item(i));
+                        System.out.println(" * " + lang);
+                    }
+                }
+            }
+        } catch (SOAPException | IOException | XPathExpressionException e) {
+            e.printStackTrace();
+        }
+    }
+
+    private static String getSingleElement(SOAPMessage response,  String elementName) throws SOAPException {
+        NodeList znalezione = response.getSOAPBody().getElementsByTagNameNS(NS, elementName);
+        String wynik = null;
+        if(znalezione.getLength() > 0) {
+            wynik = znalezione.item(0).getTextContent();
+        }
+        return wynik;
+    }
+}