使用Java開發一個非常簡單的Web Service例子

1.定義一個Web Service 的介面類

package org.yang.ws;import javax.jws.WebMethod;import javax.jws.WebService;import javax.jws.soap.SOAPBinding;import javax.jws.soap.SOAPBinding.Style;@WebService@SOAPBinding(style=Style.RPC)public interface TimeServer{@WebMethodpublic String getTimeAsString();public long getTimeAsElapsed();}

2.定義一個Web Service介面的實作類別：

package org.yang.ws;import java.util.Date;import javax.jws.WebService;@WebService(endpointInterface="org.yang.ws.TimeServer")public class TimeServerImpl implements TimeServer{public String getTimeAsString(){return new Date().toString();}public long getTimeAsElapsed(){return new Date().getTime();}}

3.發布Web Service

package org.yang.ws;import javax.xml.ws.Endpoint;public class Publisher{public static void main(String[] args){Endpoint.publish("http://127.0.0.1:9876/ts", new TimeServerImpl());System.out.println("successfully!!");}}

4.類比客戶發送請求：

package org.yang.ws;import java.net.URL;import javax.xml.namespace.QName;import javax.xml.ws.Service;public class Test{public static void main(String[] args) throws Exception{URL url = new URL("http://127.0.0.1:9876/ts?wsdl");QName qName = new QName("http://ws.yang.org/", "TimeServerImplService");Service service = Service.create(url, qName);TimeServer eif = service.getPort(TimeServer.class);System.out.println(eif.getTimeAsString());System.out.println(eif.getTimeAsElapsed());}}

5.以wsdl文檔產生的程式碼來調用：

（1）使用wsimport 命令來將wsdl文檔用戶端代碼：

wsimport -p ts -keep http://127.0.0.1:9876/ts?wsdl

（2）調用服務：

package ts;public class Test{public static void main(String[] args) throws Exception{TimeServerImplService service = new TimeServerImplService();TimeServer eif = service.getTimeServerImplPort();System.out.println(eif.getTimeAsString());System.out.println(eif.getTimeAsElapsed());}}