WebReference.com - Part 5 of chapter 3 from Professional Java Web Services, Wrox Press Ltd. (5/6)
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Professional Java Web Services
RetrieveServlet
The RetrieveServlet class is located in RetrieveServlet.java. The class is listed below:
package com.wrox.jobresume.client.retrieve;
// Imports needed for the Servlet API
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.ServletException;
import javax.servlet.ServletConfig;
import java.io.PrintWriter;
// Imports needed for the Apache SOAP API
import org.apache.soap.encoding.SOAPMappingRegistry;
import org.apache.soap.encoding.soapenc.BeanSerializer;
import org.apache.soap.Constants;
import org.apache.soap.SOAPException;
import org.apache.soap.Fault;
import org.apache.soap.util.xml.QName;
import org.apache.soap.rpc.Call;
import org.apache.soap.rpc.Parameter;
import org.apache.soap.rpc.Response;
import java.net.URL;
// Other Imports
import java.util.Vector;
import com.wrox.jobresume.common.Resume;
public class RetrieveServlet extends HttpServlet {
static String RPCROUTER = "https://localhost:8080/soap/servlet/rpcrouter";
// Initializes the servlet
public void init(ServletConfig config) throws ServletException {
super.init(config);
}
// Destroys the servlet
public void destroy() { }
protected void processRequest(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, java.io.IOException {
response.setContentType("text/html");
java.io.PrintWriter out = response.getWriter();
out.println("<html>");
out.println("<body>");
out.println("<p align='center'><img align='middle' src='../wroxlogo.gif'</img> <font face='Arial Narrow' size='5'><b>Job Resumé Repository System</b></font></p>");
// Get the Unique ID (UID) of the resumé from the form
String uid = request.getParameter("uid");
SOAPMappingRegistry smr = new SOAPMappingRegistry();
BeanSerializer beanSer = new BeanSerializer();
// Map the types
smr.mapTypes(Constants.NS_URI_SOAP_ENC,
new QName("urn:jobresume", "resume"),
Resume.class, beanSer, beanSer);
// Setup the Call
Call call = new Call();
call.setSOAPMappingRegistry(smr);
call.setTargetObjectURI("urn:JobResumeRepositoryService");
call.setMethodName("retrieve");
call.setEncodingStyleURI(Constants.NS_URI_SOAP_ENC);
// Add the parameters
Vector params = new Vector();
params.addElement(new Parameter("uid", String.class, uid, null));
call.setParams(params);
// Invoke the call.
Response resp = null;
try {
URL url = new URL(RPCROUTER);
resp = call.invoke(url, "");
} catch (SOAPException e) {
out.println("Caught SOAPException (" +
e.getFaultCode() + "): " +
e.getMessage());
}
// Check the response
if (!resp.generatedFault()) //Successful response {
Parameter ret = resp.getReturnValue();
Resume value = (Resume) ret.getValue();
if (value != null)
displayResume(out,value);
else
out.println("<font face='Arial Narrow' size='2'>The resumé for uid " + uid + " could not be found.</font><br><br>");
out.println("<font face='Arial Narrow' size='2'>[<a href='../retrieve.html'>Retrieve A Resumé</a>] [<a href='../submit.html'>Submit A Resumé</a>]" +
" [<a href='../index.html'>Home</a>]</font>");
} else { //Unsuccessful response
Fault fault = resp.getFault();
out.println("Generated fault: ");
out.println (" Fault Code = " + fault.getFaultCode());
out.println (" Fault String = " + fault.getFaultString());
}
out.println("</body>");
out.println("</html>");
out.close();
}
/** Handles the HTTP <code>GET</code> method.
* @param request servlet request
* @param response servlet response
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, java.io.IOException {
processRequest(request, response);
}
/** Handles the HTTP <code>POST</code> method.
* @param request servlet request
* @param response servlet response
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, java.io.IOException {
processRequest(request, response);
}
// Returns a short description of the servlet
public String getServletInfo() {
return "Job Resumé Repository System SubmitServlet";
}
public void displayResume(PrintWriter out, Resume resume) {
out.println("<center><b><font face='Arial Narrow' size='3'>Resume UID: </font>" + resume.getUid() + "<br></b></center><br>");
out.println("<b><font face='Arial Narrow' size='2'>Candidate Contact Information: </font></b><br><br>");
out.println(resume.getFirstName() + " " + resume.getMiddleName() + " " + resume.getLastName() + "<br>\n");
out.println(resume.getAddress() + "<br>\n");
out.println(resume.getCity() + ", " + resume.getState() + " " + resume.getZipcode() + "<br>\n");
out.println("Phone #: " + resume.getPhoneNumber() + "\n </center></font><br>");
out.println("<b><font face='Arial Narrow' size='2'>Education: </font></b><br><pre>" + resume.getEducation() + "</pre><br>");
out.println("<b><font face='Arial Narrow' size='2'>Work History: </font></b><br><pre>" + resume.getWorkHistory() + "</pre><br>");
out.println("<b><font face='Arial Narrow' size='2'>References: </font></b><br><pre>" + resume.getReferences() + "</pre><br>");
}
}This servlet is very similar to the SubmitServlet. The main difference between the
servlets is that it invokes the retrieve() method instead of the submit(). So
the Call object would be set up like this:
Call call = new Call();
call.setSOAPMappingRegistry(smr);
call.setTargetObjectURI("urn:JobResuméRepositoryService");
call.setMethodName("retrieve");
call.setEncodingStyleURI(Constants.NS_URI_SOAP_ENC);[previous] [next] |
Created: June 17, 2002
Revised: June 17, 2002
URL: https://webreference.com/programming/java/webservices/chap3/5/5.html
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