Szoftverfejlesztés J2EE platformon - Labor: Web Service
A lap korábbi változatát látod, amilyen Szikszayl (vitalap | szerkesztései) 2014. augusztus 24., 16:57-kor történt szerkesztése után volt.
Tartalomjegyzék
Web Service laborok más tárgyakból
- Integrált információs rendszerek — Visual Studio 2005 + Web Service Enhancement 3
- Elosztott rendszerek — Visual Studio 2003
Devizaváltó Web Service implementálása
- New Project / Enterprise Application
- Name: WSLabor EJB es Web Application Module is kell
- New Project / Web Application
- Name: WSLaborService
- Add to Enterprise Application: WSLabor
- WSLaborService / Source Packages / New Java Class...
- Name: RateDescriptor
- Package: ws.labor
- WSLaborService / Source Packages / New Java Class...
- Name: Converter
- Package: ws.labor
RateDescriptor bean
package ws.labor;
public class RateDescriptor {
private String from;
private String to;
public RateDescriptor() {
}
public RateDescriptor(String from, String to) {
this.setFrom(from);
this.setTo(to);
}
// getterek es setterek generalasa:
// context menuben Refactor / Encapsulate Fields...
public String getFrom() {
return from;
}
public void setFrom(String from) {
this.from = from;
}
public String getTo() {
return to;
}
public void setTo(String to) {
this.to = to;
}
// Ctrl+I: felsorolja az override-olhato metodusokat
public boolean equals(Object obj) {
if (!(obj instanceof RateDescriptor)) return false;
if (this==obj) return true;
RateDescriptor d = (RateDescriptor) obj;
return from.equals(d.from) && to.equals(d.to);
}
public String toString() {
return from + " -> " + to;
}
public int hashCode() {
return from.hashCode() ^ to.hashCode();
}
}
Converter service
package ws.labor;
import java.util.HashMap;
import java.util.Map;
import javax.jws.WebMethod;
import javax.jws.WebService;
@WebService()
public class Converter {
Map<RateDescriptor, Double> rates = new HashMap<RateDescriptor, Double>();
public Converter() {
rates.put(new RateDescriptor("HUF", "EUR"), 260.0);
rates.put(new RateDescriptor("HUF", "USD"), 210.0);
}
@WebMethod
public Double getRate1(RateDescriptor d) {
return rates.get(d);
}
// Web Service nem tamogatja az overload-olt metodus neveket
@WebMethod
public Double getRate2(String from, String to) {
return rates.get(new RateDescriptor(from, to));
}
}
Deploy, majd a szerver logból másoljuk ki az url-t es írjuk utána, hogy =?wsdl=. =<xsd:schema>/<import>@schemaLocation= alatt vannak a metódus deklarációk.
Devizaváltó Web Service meghívása
- WSLabor-war / Source Packages / New Servlet
- name: Converter
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
out.println("<html>");
out.println("<head>");
out.println("<title>Servlet Converter</title>");
out.println("</head>");
out.println("<body>");
out.println("<h1>Servlet Converter at " + request.getContextPath () + "</h1>");
out.println("<form method='post'>");
out.println("From: <input type='text' name='from'><br>");
out.println("To: <input type='text' name='to'><br>");
out.println("<input type='submit' value='Get Rate!'><br>");
out.println("</form>");
String from = request.getParameter("from");
String to = request.getParameter("to");
if (from!=null && to!=null) {
}
out.println("</body>");
out.println("</html>");
out.close();
}
- WSLabor-war / New / Web Service Client
- Project: Browse-zal valasszuk ki a Convertert
- Package: ws.labor.client
- WSLabor-war / Web Service References / ConverterService / ConverterService / ConverterPort / getRate2-t huzzuk at az =if (from!=null && to!=null) { }= blokk belsejebe.
- Deploy
- Ha nem megy, mert nem talalja a web service-t, Runtime / Servers / Sun AppServer / Applications / Web Applications / WSLaborService / Undeploy, majd deploy ujra.
Járatkereső Web Service implementálása EJB modulban
- WSLabor-ejb-ben New Java Class
- Name: AirLineBean
- Package: ws.labor.ejb
public class AirLineBean {
private int id;
private String source, destination;
private double price;
private String currency;
// + default es parameterezett konstruktorok
// + getterek es setterek
}
- Hozzunk letre egy Stateless Session beant ugyanabba a package-be TravelSession neven.
TravelSessionBean
package ws.labor.ejb;
import java.util.ArrayList;
import java.util.List;
import javax.ejb.Stateless;
import javax.jws.WebMethod;
import javax.jws.WebService;
@Stateless
@WebService()
public class TravelSessionBean implements ws.labor.ejb.TravelSessionLocal {
List<AirLineBean> airlines = new ArrayList<AirLineBean>();
public TravelSessionBean() {
airlines.add(new AirLineBean(1, "Budapest", "New York", 200000.0, "HUF"));
airlines.add(new AirLineBean(2, "Budapest", "New York", 180000.0, "HUF"));
airlines.add(new AirLineBean(3, "Budapest", "Parizs", 30000.0, "HUF"));
}
@WebMethod()
public AirLineBean[] searchAirLine(String source, String destination) {
List<AirLineBean> result = new ArrayList<AirLineBean>();
for (AirLineBean alb : airlines) {
if ((source==null || alb.getSource().equals(source)) &&
(destination==null || alb.getDestination().equals(destination))) {
result.add(alb);
}
}
return result.toArray(new AirLineBean[result.size()]);
}
}
Tesztelés
- Runtime / Servers / Sun AppServer / View Admin Console
- Web Services / TravelSessionBean / Test
- Probaljuk ki ugy is, hogy a kiindulasi es a cel allomast is megadjuk es ugy is, hogy csak az egyiket.
Önálló feladat
- Keszitsunk egy webes klienst a TravelSessionBean-hez
- A kliens kerje le a talalatokat, es hivja meg a Converter service-t, ha nem stimmel a penznem.
-- Peti - 2006.11.08.
