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| AJAX: Redefining Web Applications |
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id=”numstring”>
</body>
</html>
SimpleAJAXResponseServlet.java
import java.io.IOException;
import java.rmi.ServerException;
import javax.servlet.http.*;
public class SimpleAJAXResponseServlet
extends HttpServlet {
public void doGet( HttpServletRequest
request, HttpServletResponse response )
throws ServerException, IOException {
String number =
request.getParameter(“num”);
String strRepr = null;
if(number != null){
switch(Integer.parseInt(number)){
case 0:
strRepr = “Zero”;
break;
case 1:
strRepr = “One”;
break;
case 2:
strRepr = “Two”;
break;
case 3:
strRepr = “Three”;
break;
case 4:
strRepr = “Four”;
break;
case 5:
strRepr = “Five”;
break;
case 6:
strRepr = “Six”;
break;
case 7:
strRepr = “Seven”;
break;
case 8:
strRepr = “Eight”;
break;
case 9:
strRepr = “Nine”;
break; |
|
default:
strRepr = “Sorry, no conversion
available for the number “+number+”.”;
}
//Set up the response
response.setContentType(“text/xml”);
response.setHeader(“Cache-Control”,
“no-cache”);
response.getWriter().write(strRepr);
}
else{
response.setContentType(“text/xml”);
response.setHeader(“Cache-Control”,
“no-cache”);
response.getWriter().write(“?”);
}
}
}
Output:
When the number 5 is entered, the output is like this
When the number 20 is entered, the output is like this
In the above example, no xml has been used as we are sending only a single response string, so there is no need to construct any xml. So, in this case, we say that the xml is over killed.
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Nov 2007 | Java Jazz Up | 49 |
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