–Cookie 简介
–设置Cookie
–创建Cookie
–获得Cookie
–Cookie应用实例
• 使用cookie检测初访者
• 自动登录
–设置Cookie
–创建Cookie
–获得Cookie
–Cookie应用实例
• 使用cookie检测初访者
• 自动登录
################Michael分割线######################
–Cookie 简介
• Cookie 是保存在客户端的一个“键-值”对,用来标识用户的一些信息
• Cookie的应用
–在电子商务会话中标识用户
–对站点进行定制
–定向广告
• Cookie 是保存在客户端的一个“键-值”对,用来标识用户的一些信息
• Cookie的应用
–在电子商务会话中标识用户
–对站点进行定制
–定向广告
• 创建Cookie
–调用Cookie的构造函数,给出cookie的名称和cookie的值,二者都是字符串
• Cookie c = new Cookie("userID", "a1234");
–设置最大时效
• 如果要告诉浏览器将cookie存储到磁盘上,而非仅仅保存在内存中,使用setMaxAge (参数为秒数)
• c.setMaxAge(60*60*24*7); // One week
–将Cookie放入到HTTP响应
• response.addCookie(c);
–调用Cookie的构造函数,给出cookie的名称和cookie的值,二者都是字符串
• Cookie c = new Cookie("userID", "a1234");
–设置最大时效
• 如果要告诉浏览器将cookie存储到磁盘上,而非仅仅保存在内存中,使用setMaxAge (参数为秒数)
• c.setMaxAge(60*60*24*7); // One week
–将Cookie放入到HTTP响应
• response.addCookie(c);
• 获得Cookie
–调用request.getCookies
•这会得到Cookie对象组成的数组
• 在这个数组中循环,调用每个对象的getName,直到找到想要的cookie为止
–调用request.getCookies
•这会得到Cookie对象组成的数组
• 在这个数组中循环,调用每个对象的getName,直到找到想要的cookie为止
TestCookiesServlet.java
package com.michael.servlet;
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;
public class TestCookiesServlet extends HttpServlet {
/**
* Constructor of the object.
*/
public TestCookiesServlet() {
super();
}
/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
/**
* 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 {
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 {
//Setting cookie
//创建Cookie
Cookie c1 = new Cookie("c1","cv1");
Cookie c2 = new Cookie("c2","cv2");
//设置Cookie时效
c1.setMaxAge(60*60*24);
c2.setMaxAge(60*60*24);
//添加Cookie
response.addCookie(c1);
response.addCookie(c2);
//getting cookie
Cookie[] cookies = request.getCookies();
String name = "";
String value = "";
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out
.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("<HTML>");
out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>");
out.println(" <BODY>");
if(cookies!=null&&cookies.length>0){
for(int i=0;i<cookies.length;i++){
name = cookies[i].getName();
value = cookies[i].getValue();
out.println(name+":"+value);
}
}
out.println(" </BODY>");
out.println("</HTML>");
out.flush();
out.close();
}
/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occure
*/
public void init() throws ServletException {
// Put your code here
}
}
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;
public class TestCookiesServlet extends HttpServlet {
/**
* Constructor of the object.
*/
public TestCookiesServlet() {
super();
}
/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
/**
* 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 {
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 {
//Setting cookie
//创建Cookie
Cookie c1 = new Cookie("c1","cv1");
Cookie c2 = new Cookie("c2","cv2");
//设置Cookie时效
c1.setMaxAge(60*60*24);
c2.setMaxAge(60*60*24);
//添加Cookie
response.addCookie(c1);
response.addCookie(c2);
//getting cookie
Cookie[] cookies = request.getCookies();
String name = "";
String value = "";
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out
.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("<HTML>");
out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>");
out.println(" <BODY>");
if(cookies!=null&&cookies.length>0){
for(int i=0;i<cookies.length;i++){
name = cookies[i].getName();
value = cookies[i].getValue();
out.println(name+":"+value);
}
}
out.println(" </BODY>");
out.println("</HTML>");
out.flush();
out.close();
}
/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occure
*/
public void init() throws ServletException {
// Put your code here
}
}
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<servlet>
<description>This is the description of my J2EE component</description>
<display-name>This is the display name of my J2EE component</display-name>
<servlet-name>TestCookiesServlet</servlet-name>
<servlet-class>com.michael.servlet.TestCookiesServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>TestCookiesServlet</servlet-name>
<url-pattern>/servlet/TestCookiesServlet</url-pattern>
</servlet-mapping>
</web-app>
<web-app version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<servlet>
<description>This is the description of my J2EE component</description>
<display-name>This is the display name of my J2EE component</display-name>
<servlet-name>TestCookiesServlet</servlet-name>
<servlet-class>com.michael.servlet.TestCookiesServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>TestCookiesServlet</servlet-name>
<url-pattern>/servlet/TestCookiesServlet</url-pattern>
</servlet-mapping>
</web-app>
测试一下
• Cookie应用实例
–使用cookie检测初访者
–使用cookie检测初访者
TestCookiesServlet.java
package com.michael.servlet;
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;
public class TestCookiesServlet extends HttpServlet {
/**
* Constructor of the object.
*/
public TestCookiesServlet() {
super();
}
/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
/**
* 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 {
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 {
/**
//Setting cookie
//创建Cookie
Cookie c1 = new Cookie("c1","cv1");
Cookie c2 = new Cookie("c2","cv2");
//设置Cookie时效
c1.setMaxAge(60*60*24);
c2.setMaxAge(60*60*24);
//添加Cookie
response.addCookie(c1);
response.addCookie(c2);
//getting cookie
Cookie[] cookies = request.getCookies();
String name = "";
String value = "";
*/
//使用cookie检测初访者
boolean newbie = true;
Cookie[] cookies = request.getCookies();
if(cookies!=null){
for(int i=0;i<cookies.length;i++){
Cookie c = cookies[i];
if((c.getName().equals("repeatVisitor"))&&(c.getValue().equals("yes"))){
newbie = false;
break;
}
String title;
if(newbie){
Cookie returnVisitorCookie = new Cookie("repeatVisitor","yes");
returnVisitorCookie.setMaxAge(60*60*24*365);
response.addCookie(returnVisitorCookie);
title = "Welcome Aboard";
}else{
title = "Welcome Back";
}
System.out.println(title);
}
}
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out
.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("<HTML>");
out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>");
out.println(" <BODY>");
/*
if(cookies!=null&&cookies.length>0){
for(int i=0;i<cookies.length;i++){
name = cookies[i].getName();
value = cookies[i].getValue();
out.println(name+":"+value);
}
}
*/
out.println(" </BODY>");
out.println("</HTML>");
out.flush();
out.close();
}
/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occure
*/
public void init() throws ServletException {
// Put your code here
}
}
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;
public class TestCookiesServlet extends HttpServlet {
/**
* Constructor of the object.
*/
public TestCookiesServlet() {
super();
}
/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
/**
* 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 {
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 {
/**
//Setting cookie
//创建Cookie
Cookie c1 = new Cookie("c1","cv1");
Cookie c2 = new Cookie("c2","cv2");
//设置Cookie时效
c1.setMaxAge(60*60*24);
c2.setMaxAge(60*60*24);
//添加Cookie
response.addCookie(c1);
response.addCookie(c2);
//getting cookie
Cookie[] cookies = request.getCookies();
String name = "";
String value = "";
*/
//使用cookie检测初访者
boolean newbie = true;
Cookie[] cookies = request.getCookies();
if(cookies!=null){
for(int i=0;i<cookies.length;i++){
Cookie c = cookies[i];
if((c.getName().equals("repeatVisitor"))&&(c.getValue().equals("yes"))){
newbie = false;
break;
}
String title;
if(newbie){
Cookie returnVisitorCookie = new Cookie("repeatVisitor","yes");
returnVisitorCookie.setMaxAge(60*60*24*365);
response.addCookie(returnVisitorCookie);
title = "Welcome Aboard";
}else{
title = "Welcome Back";
}
System.out.println(title);
}
}
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out
.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("<HTML>");
out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>");
out.println(" <BODY>");
/*
if(cookies!=null&&cookies.length>0){
for(int i=0;i<cookies.length;i++){
name = cookies[i].getName();
value = cookies[i].getValue();
out.println(name+":"+value);
}
}
*/
out.println(" </BODY>");
out.println("</HTML>");
out.flush();
out.close();
}
/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occure
*/
public void init() throws ServletException {
// Put your code here
}
}
–自动登录
InitServlet.java
package com.michael.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;
public class InitServlet extends HttpServlet {
/**
* Constructor of the object.
*/
public InitServlet() {
super();
}
/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
/**
* 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 {
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 {
//获取Cookie
Cookie[] cookies = request.getCookies();
if(cookies!=null&&cookies.length>0){
for(int i=0;i<cookies.length;i++){
String name =cookies[i].getName();
if(name!=null&&name.equals("username")){
String value = cookies[i].getValue();
request.setAttribute("un",value);
}
if(name!=null&&name.equals("password")){
String value = cookies[i].getValue();
request.setAttribute("pw",value);
}
}
}
request.getRequestDispatcher("/login.jsp").forward(request, response);
}
/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occure
*/
public void init() throws ServletException {
// Put your code here
}
}
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;
public class InitServlet extends HttpServlet {
/**
* Constructor of the object.
*/
public InitServlet() {
super();
}
/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
/**
* 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 {
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 {
//获取Cookie
Cookie[] cookies = request.getCookies();
if(cookies!=null&&cookies.length>0){
for(int i=0;i<cookies.length;i++){
String name =cookies[i].getName();
if(name!=null&&name.equals("username")){
String value = cookies[i].getValue();
request.setAttribute("un",value);
}
if(name!=null&&name.equals("password")){
String value = cookies[i].getValue();
request.setAttribute("pw",value);
}
}
}
request.getRequestDispatcher("/login.jsp").forward(request, response);
}
/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occure
*/
public void init() throws ServletException {
// Put your code here
}
}
login.jsp
<%@ page language="java" import="java.util.*" pageEncoding="gbk"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'login.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<form name="f1" id="f1" action="/Servlet_Cookies/servlet/LoginServlet" method="post">
<table border="0">
<tr>
<td>用户名称:</td>
<td><input type="text" name="username" value="${un}"></td>
</tr>
<tr>
<td>用户密码:</td>
<td><input type="password" name="password" value="${pw}"></td>
</tr>
<tr>
<td>一周自动登录:</td>
<td colspan="2"><input type="checkbox" name="isAuto" value="1"></td>
</tr>
<tr>
<td colspan="2" align="center"><input type="submit" value="登录"></td>
</tr>
</table>
</form>
</body>
</html>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'login.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<form name="f1" id="f1" action="/Servlet_Cookies/servlet/LoginServlet" method="post">
<table border="0">
<tr>
<td>用户名称:</td>
<td><input type="text" name="username" value="${un}"></td>
</tr>
<tr>
<td>用户密码:</td>
<td><input type="password" name="password" value="${pw}"></td>
</tr>
<tr>
<td>一周自动登录:</td>
<td colspan="2"><input type="checkbox" name="isAuto" value="1"></td>
</tr>
<tr>
<td colspan="2" align="center"><input type="submit" value="登录"></td>
</tr>
</table>
</form>
</body>
</html>
LoginServlet.java
package com.michael.servlet;
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;
public class LoginServlet extends HttpServlet {
/**
* Constructor of the object.
*/
public LoginServlet() {
super();
}
/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
/**
* 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 {
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 {
String username = request.getParameter("username");
String password = request.getParameter("password");
String isAuto = request.getParameter("isAuto");
if(isAuto!=null&&isAuto.equals("1")){
Cookie usernameCookie = new Cookie("username",username);
Cookie passwordCookie = new Cookie("password",password);
usernameCookie.setMaxAge(60*60*24*7);
passwordCookie.setMaxAge(60*60*24*7);
response.addCookie(usernameCookie);
response.addCookie(passwordCookie);
}
//页面跳转
request.getRequestDispatcher("/welcome.html").forward(request, response);
}
/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occure
*/
public void init() throws ServletException {
// Put your code here
}
}
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;
public class LoginServlet extends HttpServlet {
/**
* Constructor of the object.
*/
public LoginServlet() {
super();
}
/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
/**
* 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 {
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 {
String username = request.getParameter("username");
String password = request.getParameter("password");
String isAuto = request.getParameter("isAuto");
if(isAuto!=null&&isAuto.equals("1")){
Cookie usernameCookie = new Cookie("username",username);
Cookie passwordCookie = new Cookie("password",password);
usernameCookie.setMaxAge(60*60*24*7);
passwordCookie.setMaxAge(60*60*24*7);
response.addCookie(usernameCookie);
response.addCookie(passwordCookie);
}
//页面跳转
request.getRequestDispatcher("/welcome.html").forward(request, response);
}
/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occure
*/
public void init() throws ServletException {
// Put your code here
}
}
welcome.html
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>MyHtml.html</title>
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="this is my page">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<!--<link rel="stylesheet" type="text/css" href="./styles.css">-->
</head>
<body>
<h1>Welcome you!</h1>
</body>
</html>
<html>
<head>
<title>MyHtml.html</title>
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="this is my page">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<!--<link rel="stylesheet" type="text/css" href="./styles.css">-->
</head>
<body>
<h1>Welcome you!</h1>
</body>
</html>
################Michael分割线######################
本文转自redking51CTO博客,原文链接:http://blog.51cto.com/redking/174725,如需转载请自行联系原作者