package servlet;
import java.io.IOException;import javax.servlet.ServletException;import javax.servlet.http.Cookie;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;
/** * Servlet implementation class Myservlet */public class Myservlet extends HttpServlet { private static final long serialVersionUID = 1L; /** * @see HttpServlet#HttpServlet() */ public Myservlet() { super(); // TODO Auto-generated constructor stub }
/** * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response) */ protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub// response.getWriter().append("Served at: ").append(request.getContextPath()); String username = request.getParameter("username"); String password = request.getParameter("password"); /* * 使用cookie * */// Cookie cook = new Cookie("username", username);// Cookie cok= new Cookie("password", password);// System.out.println(username);// System.out.println(password);// response.addCookie(cook);// response.addCookie(cok); /* * 使用session * */ request.getSession().setAttribute("username", username); request.getSession().setAttribute("password", password);// response.sendRedirect("Myservlet2"); /* * 当cookie被禁用时 * */ response.sendRedirect(response.encodeUrl("Myservlet2?"+request.getSession().getId())); }
/** * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response) */ protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub doGet(request, response); }
}
package servlet;
import java.io.IOException;import javax.servlet.ServletException;import javax.servlet.http.Cookie;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;
/** * Servlet implementation class Myservlet2 */public class Myservlet2 extends HttpServlet { private static final long serialVersionUID = 1L; /** * @see HttpServlet#HttpServlet() */ public Myservlet2() { super(); // TODO Auto-generated constructor stub }
/** * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response) */ protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub// response.getWriter().append("Served at: ").append(request.getContextPath()); String username = null; String password = null; /* * 使用cookie * */// Cookie [] cook = request.getCookies();// for(int i = 0;i<cook.length;i++) {// if("username".equals(cook[i].getName())) { System.out.println(username);// username= cook[i].getValue();// // }// if("password".equals(cook[i].getName())) { System.out.println(password);// password = cook[i].getValue();// // }// } /* * 使用session * */ username = (String) request.getSession().getAttribute("username"); password = (String) request.getSession().getAttribute("password"); response.getWriter().print( username); response.getWriter().print( password); }
/** * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response) */ protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub doGet(request, response); }
}
转载于:https://www.cnblogs.com/xiaosuye/p/9657733.html
