【下载文档:  jsp搜索引擎.txt 】

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jsp搜索引擎
package coreservlets; import java.io.*; import javax.servlet.*; import javax.servlet.http.*; import java.net.*; public class SearchEngines extends HttpServlet { public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String searchString = request.getParameter("searchString"); if ((searchString == null) (searchString.length() == 0)) { reportProblem(response, "Missing search string."); return; } // The URLEncoder changes spaces to "+" signs and other // non-alphanumeric characters to "%XY", where XY is the // hex value of the ASCII (or ISO Latin-1) character. // Browsers always URL-encode form values, so the // getParameter method decodes automatically. But since // we"re just passing this on to another server, we need to // re-encode it. searchString = URLEncoder.encode(searchString); String numResults = request.getParameter("numResults"); if ((numResults == null) (numResults.equals("0")) (numResults.length() == 0)) { numResults = "10"; } String searchEngine = request.getParameter("searchEngine"); if (searchEngine == null) { reportProblem(response, "Missing search engine name."); return; } SearchSpec[] commonSpecs = SearchSpec.getCommonSpecs(); for(int i=0; i" + message + ""); } public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doGet(request, response); } }