Introduction to the method of completing web service mode in java

This article mainly introduces in detail how to implement simple webservice in java, which has certain reference value. Interested friends can refer to it

The examples in this article share with you how to implement webservice in java. The specific code is for your reference. The specific content is as follows

##After testing, bugs will appear below jdk1.6.10. It is recommended to use version 10 or above

1. Definition

Interface

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. Implement interface

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;
 }

}

3. Define service

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());
 }
}

4. Test service

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();
 }
 }

}

5.TestSoap

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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