一个非常简单实用的检查用户浏览器是否支持cookie的servlet，不支持则给出输出提示。
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
public class CheckCookieServlet extends HttpServlet {
/**Process the HTTP Get request*/
public void doGet(HttpServletRequest request, HttpServletResponse response) throws
ServletException, IOException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
if (request.getParameter("flag")==null) {
// the first request
（更多…）