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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> __________________________________________________________________________ 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 IOException { ArrayList searchResults = new ArrayList(); GoogleSearch search = new GoogleSearch(); search.setKey(CLIENT_KEY); try { search.setQueryString(queryString.trim()); GoogleSearchResult results = search.doSearch(); GoogleSearchResultElement[] resultElements = results.getResultElements(); for (int i = 0; i<resultElements.length; i++) { searchResults.add(new SearchResultBean(resultElements[i].getTitle(), resultElements[i].getURL(), resultElements[i].getSnippet())); } } catch (GoogleSearchFault f) { throw new IOException(\"The call to the Google Web APIs failed: \" + f.getMessage()); } catch (Exception e) { throw new IOException(\"Thread Problem.\"); } return searchResults; } } __________________________________________________________________________ 返回搜索结果的Bean:SearchResultBean /** * Result’s Bean. * * @author Jose Sandoval */ public class SearchResultBean { private String title; private String URL; private String snippet; public SearchResultBean(String title, String URL, String summary) { super(); this.title = title; this.URL = URL; this.snippet = summary; } public String getTitle() { return title; } public void setTitle(String title) { this.title = title; } public String getURL() { return URL; } public void setURL(String url) { URL = url; } public String getSnippet() { return snippet; } public void setSnippet(String summary) { this.snippet = summary; } } 返回类别: 教程 上一教程: Java语言之父James Gosling 下一教程: Java的建造设计模式 您可以阅读与"在Java中检索Google的搜索结果"相关的教程: · 基于JAVA技术的搜索引擎的研究与实现 · 使用LUCENE进行全文检索(三)-进行搜索 · 在应用中加入全文检索功能??基于Java的全文索引引擎Lucene简介 · 实现可自定义的搜索功能 · Java数据库编程中查询结果的表格式输出 |
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