autocompleteservlet.java

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/***
 * Excerpted from "Pragmatic Ajax"
 * We make no guarantees that this code is fit for any purpose. 
 * Visit http://www.pragmaticprogrammer.com/titles/ajax for more book information.
***/
package ajaxian.book.crm.servlet;

import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.ServletConfig;
import java.io.PrintWriter;
import java.io.IOException;
import java.util.Iterator;
import java.util.ArrayList;


public class AutoCompleteServlet extends HttpServlet {
    public void doPost(HttpServletRequest request,
		      HttpServletResponse response)
	throws IOException {
	      System.out.println(request);
         String[] zips = new String[] {
            "10010", "11035", "27707", "31000", "32230", "34434",
            "45555", "46666", "46785", "46699", "49999", "53711", "53703" };

         ArrayList results = new ArrayList();

         String val = request.getParameter("zip");
         for(int i=0;i<zips.length;i++) {
            if(zips[i].startsWith(val)) results.add(zips[i]);
         }

         String message = "<ul>";
         Iterator iter = results.iterator();
         while(iter.hasNext()) {
            message += "<li>" + (String)iter.next() + "</li>";
         }
         message += "</ul>";


         response.setContentType("text/html");
	      PrintWriter out = response.getWriter();

      	out.println(message);
    }
}