jsp另外五大内置对象之response-操作cookie
responseo3.jsp
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<%@ page import="java.util.*"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Insert title here</title>
<script type="text/javascript">
function resetValue(){
document.getElementById("userName").value="";
document.getElementById("pwd").value="";
}
</script>
<%
String userName=null;
String pwd=null;
Cookie[] cookies=request.getCookies();
for(int i=0;cookies!=null &&i<cookies.length;i++){
if(cookies[i].getName().equals("userNameAndPwd")){
userName=cookies[i].getValue().split("-")[0];
pwd=cookies[i].getValue().split("-")[1];
}
}
if(userName==null){
userName="";
}
if(pwd==null){
pwd="";
}
%>
</head>
<body>
<form action="userLogin.jsp" method="post">
<table>
<tr>
<td>用户名：</td>
<td><input type="text" id="userName" name="userName" value="<%=userName%>"/></td>
</tr>
<tr>
<td>密码：</td>
<td><input type="password" id="pwd" name="pwd" value="<%=pwd %>" /></td>
</tr>
<tr>
<td>记住密码：</td>
<td><input type="checkbox" id="remember" name="remember" value="remember-me"/></td>
</tr>
<tr>
<td><input type="submit" value="登录"/></td>
<td><input type="button" value="重置" onclick="resetValue()"/></td>
</tr>
</table>
</form>
</body>
</html>
userLogin.jsp
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<%@ page import="javax.servlet.http.*"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Insert title here</title>
</head>
<body>
<%
String userName=request.getParameter("userName"); // 获取用户名
String pwd=request.getParameter("pwd"); // 获取密码
String remember=request.getParameter("remember"); // 获取记住密码
if("remember-me".equals(remember)){
Cookie userNameAndPwd=new Cookie("userNameAndPwd",userName+"-"+pwd);
userNameAndPwd.setMaxAge(1*60*60*24*7); // cookie记录一个星期
response.addCookie(userNameAndPwd); // 保存cookie
System.out.println("设置Cookie成功");
}
response.sendRedirect("response03.jsp");
%>
</body>
</html>
