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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>
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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(); } }
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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
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