Einführung in die Methode zum Abschließen des Webservice-Modus in Java

In diesem Artikel wird hauptsächlich die Methode zur Implementierung eines einfachen Webservices in Java ausführlich vorgestellt, die einen bestimmten Referenzwert hat.

Das Beispiel in diesem Artikel zeigt Ihnen die Methode zur Implementierung von Webservices Der spezifische Inhalt ist wie folgt:

Nach dem Testen werden Fehler unter jdk1.6.10 angezeigt oben

1. Schnittstelle

package org.enson.chan;
 
import javax.jws.WebService;
import javax.jws.soap.SOAPBinding;
 
@WebService
@SOAPBinding(style=SOAPBinding.Style.RPC)
public interface IMyService {
 public int add(int a , int b);
 
 public int max(int a , int b);
}

2. Schnittstelle definieren

package org.enson.chan;
import javax.jws.WebService;

@WebService(endpointInterface="org.enson.chan.IMyService")
public class MyServiceImpl implements IMyService {

 public int add(int a, int b) {
 System.out.println(a+"+"+b+"="+(a+b));
 return a+b;
 }

 public int max(int a, int b) {
 System.out.println("a与b比较大小，取大值"+((a>b)?a:b));
 return (a>b)?a:b;
 }

}

4. Testservice

package org.enson.chan;
 
import javax.xml.ws.Endpoint;
 
public class MyServer {
 
 public static void main(String[] args) {
 String address = "http://localhost:8090/ns";
 Endpoint.publish(address, new MyServiceImpl());
 }
}

5. TestSoap

package org.enson.chan;

import java.net.MalformedURLException;
import java.net.URL;

import javax.xml.namespace.QName;
import javax.xml.ws.Service;

public class TestClient {

 public static void main(String[] args) {
 try {
  URL url = new URL("http://localhost:8090/ns?wsdl");
  QName sname = new QName("http://chan.enson.org/", "MyServiceImplService");
  //创建服务
  Service service = Service.create(url,sname);
  //实现接口
  IMyService ms = service.getPort(IMyService.class);
  System.out.println(ms.add(12,33));
  //以上服务有问题，依然依赖于IMyServie接口
 } catch (MalformedURLException e) {
  // TODO Auto-generated catch block
  e.printStackTrace();
 }
 }

}

[Verwandte Empfehlungen]

Besondere Empfehlung

import java.io.IOException;
import java.io.StringReader;
import java.io.StringWriter;
import java.net.URL;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.namespace.QName;
import javax.xml.soap.MessageFactory;
import javax.xml.soap.SOAPBody;
import javax.xml.soap.SOAPBodyElement;
import javax.xml.soap.SOAPEnvelope;
import javax.xml.soap.SOAPException;
import javax.xml.soap.SOAPHeader;
import javax.xml.soap.SOAPMessage;
import javax.xml.soap.SOAPPart;
import javax.xml.transform.Source;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.TransformerFactoryConfigurationError;
import javax.xml.transform.dom.DOMResult;
import javax.xml.transform.stream.StreamSource;
import javax.xml.ws.Dispatch;
import javax.xml.ws.Service;
import javax.xml.ws.soap.SOAPFaultException;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;
import org.junit.Test;
import org.soap.service.User;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
public class TestSoap {
 
 private String ns = "http://service.soap.org/";
 private String wsdlUrl = "http://localhost:8989/ms?wsdl";
 @Test
 public void test01() {
 try {
  MessageFactory factory = MessageFactory.newInstance();
  
  SOAPMessage message = factory.createMessage();
  SOAPPart part = message.getSOAPPart();
  SOAPEnvelope envelope = part.getEnvelope();
  SOAPBody body = envelope.getBody();
  QName qname = new QName("http://java.zttc.edu.cn/webservice", 
   "add","ns");//<ns:add xmlns="http://java.zttc.edu.cn/webservice"/>
  //body.addBodyElement(qname).setValue("<a>1</a><b>2</b>");
  SOAPBodyElement ele = body.addBodyElement(qname);
  ele.addChildElement("a").setValue("22");
  ele.addChildElement("b").setValue("33");
  message.writeTo(System.out);
 } catch (SOAPException e) {
  e.printStackTrace();
 } catch (IOException e) {
  e.printStackTrace();
 }
 }
 
 @Test
 public void test02() {
 try {
  URL url = new URL(wsdlUrl);
  QName sname = new QName(ns,"MyServiceImplService");
  Service service = Service.create(url,sname);
  
  Dispatch<SOAPMessage> dispatch = service.createDispatch(new QName(ns,"MyServiceImplPort"),
   SOAPMessage.class, Service.Mode.MESSAGE);
  
  SOAPMessage msg = MessageFactory.newInstance().createMessage();
  SOAPEnvelope envelope = msg.getSOAPPart().getEnvelope();
  SOAPBody body = envelope.getBody();
  
  QName ename = new QName(ns,"add","nn");//<nn:add xmlns="xx"/>
  SOAPBodyElement ele = body.addBodyElement(ename);
  ele.addChildElement("a").setValue("22");
  ele.addChildElement("b").setValue("33");
  msg.writeTo(System.out);
  System.out.println("\n invoking.....");
  
  
  SOAPMessage response = dispatch.invoke(msg);
  response.writeTo(System.out);
  System.out.println();
  
  Document doc = response.getSOAPPart().getEnvelope().getBody().extractContentAsDocument();
  String str = doc.getElementsByTagName("addResult").item(0).getTextContent();
  System.out.println(str);
 } catch (SOAPException e) {
  e.printStackTrace();
 } catch (IOException e) {
  e.printStackTrace();
 }
 }
 
 @Test
 public void test03() {
 try {
  URL url = new URL(wsdlUrl);
  QName sname = new QName(ns,"MyServiceImplService");
  Service service = Service.create(url,sname);
  
  Dispatch<Source> dispatch = service.createDispatch(new QName(ns,"MyServiceImplPort"),
   Source.class, Service.Mode.PAYLOAD);
  
  User user = new User(3,"zs","张三","11111");
  JAXBContext ctx = JAXBContext.newInstance(User.class);
  Marshaller mar = ctx.createMarshaller();
  mar.setProperty(Marshaller.JAXB_FRAGMENT, true);
  StringWriter writer= new StringWriter();
  mar.marshal(user, writer);
  
  String payload = "<nn:addUser xmlns:nn=\""+ns+"\">"+writer.toString()+"</nn:addUser>";
  System.out.println(payload);
  StreamSource rs = new StreamSource(new StringReader(payload));
  
  Source response = (Source)dispatch.invoke(rs);
  
  Transformer tran = TransformerFactory.newInstance().newTransformer();
  DOMResult result = new DOMResult();
  tran.transform(response, result);
  
  XPath xpath = XPathFactory.newInstance().newXPath();
  NodeList nl = (NodeList)xpath.evaluate("//user", result.getNode(),XPathConstants.NODESET);
  User ru = (User)ctx.createUnmarshaller().unmarshal(nl.item(0));
  System.out.println(ru.getNickname());
 } catch (IOException e) {
  e.printStackTrace();
 } catch (JAXBException e) {
  e.printStackTrace();
 } catch (TransformerConfigurationException e) {
  e.printStackTrace();
 } catch (TransformerFactoryConfigurationError e) {
  e.printStackTrace();
 } catch (TransformerException e) {
  e.printStackTrace();
 } catch (XPathExpressionException e) {
  e.printStackTrace();
 }
 }
 
 @Test
 public void test04() {
 try {
  URL url = new URL(wsdlUrl);
  QName sname = new QName(ns,"MyServiceImplService");
  Service service = Service.create(url,sname);
  
  Dispatch<SOAPMessage> dispatch = service.createDispatch(new QName(ns,"MyServiceImplPort"),
   SOAPMessage.class, Service.Mode.MESSAGE);
  
  SOAPMessage msg = MessageFactory.newInstance().createMessage();
  SOAPEnvelope envelope = msg.getSOAPPart().getEnvelope();
  SOAPBody body = envelope.getBody();
  
  SOAPHeader header = envelope.getHeader();
  if(header==null) header = envelope.addHeader();
  QName hname = new QName(ns,"authInfo","nn");
  header.addHeaderElement(hname).setValue("aabbccdd");
  
  QName ename = new QName(ns,"list","nn");//<nn:add xmlns="xx"/>
  body.addBodyElement(ename);
  msg.writeTo(System.out);
  System.out.println("\n invoking.....");
  
  
  SOAPMessage response = dispatch.invoke(msg);
  response.writeTo(System.out);
  System.out.println();
  
  Document doc = response.getSOAPBody().extractContentAsDocument();
  NodeList nl = doc.getElementsByTagName("user");
  JAXBContext ctx = JAXBContext.newInstance(User.class);
  for(int i=0;i<nl.getLength();i++) {
  Node n = nl.item(i);
  User u = (User)ctx.createUnmarshaller().unmarshal(n);
  System.out.println(u.getNickname());
  }
 } catch (SOAPException e) {
  e.printStackTrace();
 } catch (IOException e) {
  e.printStackTrace();
 } catch (JAXBException e) {
  e.printStackTrace();
 }
 }
 
 @Test
 public void test05() {
 try {
  URL url = new URL(wsdlUrl);
  QName sname = new QName(ns,"MyServiceImplService");
  Service service = Service.create(url,sname);
  
  Dispatch<SOAPMessage> dispatch = service.createDispatch(new QName(ns,"MyServiceImplPort"),
   SOAPMessage.class, Service.Mode.MESSAGE);
  
  SOAPMessage msg = MessageFactory.newInstance().createMessage();
  SOAPEnvelope envelope = msg.getSOAPPart().getEnvelope();
  SOAPBody body = envelope.getBody();
  
  QName ename = new QName(ns,"login","nn");//<nn:add xmlns="xx"/>
  SOAPBodyElement ele = body.addBodyElement(ename);
  ele.addChildElement("username").setValue("ss");
  ele.addChildElement("password").setValue("dd");
  msg.writeTo(System.out);
  System.out.println("\n invoking.....");
  
  
  SOAPMessage response = dispatch.invoke(msg);
  response.writeTo(System.out);
  System.out.println();
  
 } catch(SOAPFaultException e){
  System.out.println(e.getMessage());
 } catch (SOAPException e) {
  e.printStackTrace();
 } catch (IOException e) {
  e.printStackTrace();
 } 
 }
}

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