客户端的javascript：

<script language="javascript">
var theurl = "/examples/servlet/mygooglesearchservlet?search=";
var http = gethttpobject(); 

function handlehttpresponse() {
if (http.readystate == 4) {
    googlesearchresults.innerhtml = http.responsetext;
}
}

function updategoogleresults(formelement) {
var searchquery = document.forms[0].elements[formelement].value;
http.open("get", theurl + escape(searchquery), true);
http.onreadystatechange = handlehttpresponse;
http.send(null);
}

function gethttpobject() {
var xmlhttp;
try {
    xmlhttp = new activexobject("msxml2.xmlhttp");
} catch (e) {
     try {
        xmlhttp = new activexobject("microsoft.xmlhttp");
     } catch (e) {
        xmlhttp = false;
     }
}

if (!xmlhttp && typeof xmlhttprequest != ’undefined’) {
    try {
     xmlhttp = new xmlhttprequest();
    } catch (e) {
     xmlhttp = false;
    }
}

return xmlhttp;
}
</script>

__________________________________________________________________________

服务器端的：mygooglesearchservlet

import java.io.ioexception;
import java.io.printwriter;
import java.util.arraylist;

import javax.servlet.servletexception;
import javax.servlet.http.httpservlet;
import javax.servlet.http.httpservletrequest;
import javax.servlet.http.httpservletresponse;

/**
* search google.
* 
* @author jose sandoval
*/
public class mygooglesearchservlet extends httpservlet {
        /**
         * do get.
         * 
         * @param request httpservletrequest
         * @param response httpservletresponse
         * @throws servletexception, ioexeption
         */
        public void doget(httpservletrequest request, httpservletresponse response) throws servletexception, ioexception {
                printwriter out = response.getwriter();
                stringbuffer resultbuffer = new stringbuffer();
                arraylist results = mygooglesearch.dosearch(request.getparameter("search"));
                searchresultbean resultbean = null;
                
                for (int i = 0; i<results.size(); i++) {
                        resultbean = (searchresultbean) results.get(i);
                        resultbuffer.append("<a href=").append(resultbean.geturl()).append(">").append(resultbean.gettitle()).append("</a>");
                        resultbuffer.append("<br>");
                        resultbuffer.append(resultbean.getsnippet());
                        resultbuffer.append("<br>").append("<br>");
                }
                
                response.setcontenttype("text/html");
                response.setheader("pragma", "no-cache");
                response.setheader("expires", "0");
                response.setheader("cache-control", "no-store");
                
                out.print(resultbuffer.tostring());
                out.close();
        }
}

__________________________________________________________________________

服务器端的：mygooglesearch

import java.io.ioexception;
import java.util.arraylist;

import com.google.soap.search.googlesearch;
import com.google.soap.search.googlesearchfault;
import com.google.soap.search.googlesearchresult;
import com.google.soap.search.googlesearchresultelement;

/**
* googlesearch.
* 
* @author jose sandoval
*/
public class mygooglesearch {
        private static string client_key = "you_have_to_get_your_own_key_from_google";

        /**
         * search google.
         * 
         * @param querystring string
         * @return arraylist contains simplesearchresult
         * @throws ioexception
         */
        public static arraylist dosearch(string querystring) throws ioexceptio