在Java中检索Google的搜索结果_Java教程

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