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Consumer using JAX WS Dispatch API and DOM parser 1 |
Webservice used in this example is described in Simple Java first CXF Webservice pages
Steps
1. Create Web application folders and add JAXWS, JAXB jars
2. Change application web.xml
3. Create servlet. Create SOAP request. Parse SOAP response. Display result.
1: Add following jars /WEB-INF/lib/
geronimo-jaxws_2.1_spec-1.0.jar
jaxb-api-2.1.jar
jaxb-impl-2.1.13.jar
jaxb-xjc-2.1.13.jar
jstl.jar
standard.jar
2: Add consumer servlet to /WEB-INF/web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app
id="WebApp_ID"
version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>Cxf2</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
</welcome-file-list>
<servlet>
<display-name>UserServlet1</display-name>
<servlet-name>UserServlet1</servlet-name>
<servlet-class>
com.company.servlet.UserServlet1
</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>UserServlet1</servlet-name>
<url-pattern>/user/*</url-pattern>
</servlet-mapping>
</web-app>
Build SOAP request using various javax.xml.soap classes. It should look like following XML. Refer UserServlet1.java
<SOAP-ENV:Envelope
xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">
<SOAP-ENV:Header /> <SOAP-ENV:Body> <trup:list
xmlns:trup="http://www.trupti.com/"> <fname>ALL</fname> </trup:list>
</SOAP-ENV:Body> </SOAP-ENV:Envelope>
Then parse SOAP response using org.w3c.dom classes. Refer UserServlet1.java
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
<soap:Body>
<ns1:listResponse xmlns:ns1="http://www.trupti.com/">
<list> <item>
<firstName>Donald</firstName>
<lastName>Duck</lastName>
<userId>ddonald</userId>
<userRole>duck</userRole>
</item> <item>
<firstName>Micky</firstName>
<lastName>Mouse</lastName>
<userId>mmouse</userId>
<userRole>mouse</userRole>
</item> <item>
<firstName>Pluto</firstName>
<lastName>Dog</lastName>
<userId>pdog</userId>
<userRole>dog</userRole>
</item> </list>
</ns1:listResponse>
</soap:Body>
</soap:Envelope>
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
3: Consumer /WEB-INF/classes/com/company/servlet/UserServlet1
package com.company.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import java.net.URL;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.xml.namespace.QName;
import javax.xml.soap.MessageFactory;
import javax.xml.soap.SOAPEnvelope;
import javax.xml.soap.SOAPMessage;
import javax.xml.ws.Dispatch;
import javax.xml.ws.Service;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
public class UserServlet1
extends
HttpServlet {
private static final long serialVersionUID = 1L;
String wsloc = "http://localhost:81/cxfspring/services/userDao";
String namespace = "http://www.trupti.com/";
//UserDaoService defined in @WebService UserDao interface
QName serviceName = new QName(namespace, "UserDaoService");
//UserDaoPort defined in @WebService UserDao interface
QName portName = new QName(namespace, "UserDaoPort");
public void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException,
IOException {
process(request, response);
}
public void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException,
IOException {
process(request, response);
}
public void process(HttpServletRequest request,
HttpServletResponse response) throws ServletException,
IOException {
try {
String methodname = request.getParameter("methodname");
String firstname = request.getParameter("firstname");
URL wsdlURL = new URL(wsloc + "?wsdl");
Service service = Service.create(wsdlURL, serviceName);
Dispatch<SOAPMessage> dispatch = service.createDispatch(
portName, SOAPMessage.class, Service.Mode.MESSAGE);
MessageFactory factory = MessageFactory.newInstance();
SOAPMessage soapRequest = factory.createMessage();
SOAPEnvelope envelope = soapRequest.getSOAPPart()
.getEnvelope();
soapRequest.getSOAPBody().addBodyElement(
envelope.createName(methodname, "trup", namespace))
.addChildElement(envelope.createName("fname"))
.addTextNode(firstname);
SOAPMessage soapResponse = dispatch.invoke(soapRequest);
// ns1:listResponse
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("<html><body>");
out.println("<table bgcolor='#EFEFEF' border='1'>");
out.println("<tr>");
out.println("<td colspan='4'><Strong>");
out.println("JAX-WS Dispatch API Consumer and "
+ "DOM parser</Strong></td>");
out.println("</tr>");
out.println("<tr>");
out.println("<td><Strong>First Name</Strong></td>");
out.println("<td><Strong>Last Name</Strong></td>");
out.println("<td><Strong>User Id</Strong></td>");
out.println("<td><Strong>User Role</Strong></td>");
out.println("</tr>");
Node node1 = soapResponse.getSOAPBody().getFirstChild();
// list
Node node2 = node1.getFirstChild();
NodeList nodeList1 = node2.getChildNodes();
for (int i = 0; i < nodeList1.getLength(); i++) {
// item
Node node3 = nodeList1.item(i);
out.println("<tr>");
NodeList nodeList2 = node3.getChildNodes();
for (int j = 0; j < nodeList2.getLength(); j++) {
Node node4 = nodeList2.item(j);
out.println("<td>" + node4.getTextContent() + "</td>");
}
out.println("</tr>");
}
out.println("</table></body></html>");
} catch (Exception e) {
e.printStackTrace();
}
}
}
Test using following URL. Don't forget to start webservice.
http://localhost:81/consumer/user/?methodname=list&firstname=ALL
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