Cookie实现自动登录
登录页面：
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?登录成功页面：
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Servlet:
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package com.TestCookie.biz;import java.io.IOException;import java.io.PrintWriter;import javax.servlet.ServletException;import javax.servlet.http.Cookie;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import javax.servlet.http.HttpSession;public class TestServlet extends HttpServlet {/** * The doGet method of the servlet. <br> * * This method is called when a form has its tag value method equals to get. * * @param request the request send by the client to the server * @param response the response send by the server to the client * @throws ServletException if an error occurred * @throws IOException if an error occurred */public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {this.doPost(request, response);}/** * The doPost method of the servlet. <br> * * This method is called when a form has its tag value method equals to post. * * @param request the request send by the client to the server * @param response the response send by the server to the client * @throws ServletException if an error occurred * @throws IOException if an error occurred */public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {response.setContentType("text/html");PrintWriter out = response.getWriter();response.setCharacterEncoding("UTF-8");HttpSession session=request.getSession();String name=request.getParameter("name");String password=request.getParameter("password");if ("Camey".equals(name)&&"123456".equals(password)) {Cookie cookie=new Cookie("name", name);cookie.setMaxAge(10000);response.addCookie(cookie);session.setAttribute("name", name);response.sendRedirect(response.encodeRedirectURL("index.jsp"));}out.flush();out.close();}}??
