Creating the Converter Web Service Client Application (SAP Library - Creating the Converter Web Service Client)

Creating the Converter Web Service Client Application

Use

You create a Web service client application to consume a Web service. The Web service client application connects to the Web service via a Web service proxy.

In this tutorial, you use a Java Web servlet as a client application.

Procedure

1. In the Java EE perspective, choose the converterwebclient project, and then choose File → New → Other.

2. In the list of wizards, choose Web → Servlet, and then choose Next.

3. In the Java package field, enter com.sap.tutorial.servlet.

4. In the Class name field, enter ConverterServlet, and then choose Finish.

5. Update the source code as shown in the example below.

The @WebServiceRef annotation declares a reference to the ConverterService Web service.

Syntax

package com.sap.tutorial.servlet;

import java.io.IOException;

import java.io.PrintWriter;

import java.math.BigDecimal;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import javax.xml.namespace.QName;

import javax.xml.ws.WebServiceRef;

import com.sap.tutorial.javaee.service.ConverterLocal;

import com.sap.tutorial.javaee.service.ConverterService;

/**

* Servlet implementation class for Servlet: ConverterServlet

public class ConverterServlet extends javax.servlet.http.HttpServlet implements javax.servlet.Servlet {

/* (non-Java-doc)

* @see javax.servlet.http.HttpServlet#HttpServlet()

@WebServiceRef(name = "ConverterService")

ConverterService service;

public ConverterServlet() {

super();

}

/* (non-Java-doc)

* @see javax.servlet.http.HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

// TODO Auto-generated method stub

response.setContentType("text/html");

PrintWriter out = response.getWriter();

out.println("<html>");

out.println("<head><title>Converter Web Service</title></head>\n");

out.println("<body>");

out.print("<form action=\"");

out.print("ConverterServlet\" ");

out.println("method=GET>");

String euro =request.getParameter("euro");

String usd = request.getParameter("usd");

try {

if (euro != null && usd != null) {

ConverterLocal emptyWebServiceBean = service.getPort(new QName("http://sap.com/tutorial/javaee//service", "{http://sap.com/tutorial/javaee/}ConverterLocal_ConverterServiceGroup_BASIC"),com.sap.tutorial.javaee.service.ConverterLocal.class);

BigDecimal EURresult = emptyWebServiceBean.euroToDollar(new BigDecimal(new Integer(usd)));

BigDecimal USDresult = emptyWebServiceBean.dollarToEuro(new BigDecimal(new Integer(euro)));

out.println("<h3>"+"EUR="+euro+": Converted amount in USD is: "+USDresult+"</h3>");

out.println("<h3>"+"USD="+usd+": Converted amount in Euro is: "+EURresult+"</h3>");

}

else {

out.println("<h3>"+"No values entered. Please enter amount in Euro or USD."+"</h3>");

}

out.println("<P>");

out.println("Enter amount in Euro: ");

out.println("<input type=text size=20 name=euro>");

out.println("<br>");

out.println("Enter amount in USD: ");

out.println("<input type=text size=20 name=usd>");

out.println("<br>" + "<br>");

out.println("<input type=submit value=Convert>");

out.println("</form>");

out.println("</body>");

out.println("</html>");

} catch (Exception e) {

out.println(e.getMessage());

}

6. Save your changes.

Next Step

Deploying the Converter Web Service Client