jsp实现cookie自动登录怎么做?

Question

当用户登录网站时候有是否自动登录选项
当选择了之后,
下次要自动登录.

Answer 1

部分代码如下： 
login.java中 
... 
Cookie usercookie=new Cookie("usercookie",user.getUsername()); 
usercookie.setMaxAge(24*60*60); 
usercookie.setPath("/koubeiTest/"); 
usercookie.setDomain("www.lifeng.com"); 
ServletActionContext.getResponse().addCookie(usercookie); 
... login.jsp中 
<% 
Cookie[] cookie = request.getCookies(); 
if(cookie!=null){ 
for(int i = 0; i < cookie.length; i++){ 
Cookie myCookie = cookie[i]; 
if(myCookie.getName().equals("usercookie")){ 
response.sendRedirect("跳转到某用户的界面"); 
}}}%> 我的疑问是

Answer 2

js
function ckForm(){
 var sname =document.loginForm.Login.value;
 var snpwd =document.loginForm.Pwd.value;
 var snexa =document.loginForm.examine.value;  if(sname==""){
   sname=null;
 }
if(snpwd==""){
   snpwd=null;
 }
if(snexa==""){
snexa=null;
}
if(sname==null){
 alert('please input name');
 return false;

 }else if(snpwd==null){
alert('please input pwd');
return false;
}else if(snexa==null){
alert('please input examine')
return false;
}
else{
 
}
}
function getCookieVal(offset)
{
var iEndStr=document.cookie.indexOf(";",offset);
if(iEndStr==-1) iEndStr=document.cookie.length;
return unescape(document.cookie.substring(offset,iEndStr));
}function getCookie(name)
{
var strArg=name+"=";
var iArgLength=strArg.length;
var iCookieLength=document.cookie.length;
var iIndex=0;
while(iIndex<iCookieLength)
{
var kIndex=iIndex+iArgLength;
if(document.cookie.substring(iIndex,kIndex)==strArg)
return getCookieVal(kIndex);

iIndex=document.cookie.indexOf(" ",iIndex)+1;

if(iIndex==0) 
break;
}
return null;
}function setCookie(name,value)
{
var strArgValue=setCookie.arguments;
var iArgLength=setCookie.arguments.length;
var expires=(2<iArgLength)?strArgValue[2]:null;
var path=(3<iArgLength)?strArgValue[3]:null;
var domain=(4<iArgLength)?strArgValue[4]:null;
var secure=(5<iArgLength)?strArgValue[5]:false;
document.cookie=name+"="+escape(value)+((expires==null)?"":(";expires="+expires.toGMTString()))+
((path==null)?"":(";path="+path))+((domain==null)?"":(";domain="+domain))+
((secure==true)?";secure":"");
}

Answer 3

<table width="100%" border="0" cellspacing="0" cellpadding="0">
              <tr>
              <td align=left valign=middle width="40%">
username
 </td>
<td>
    <input size="14" type="text" name="Login"  value="" class=textbox maxlength=20 tabindex=1>&nbsp;&nbsp;
</td>
            </tr>     
            <tr>
              <td align=left valign=middle >
password
</td>
<td>
   <input size="14" name='Pwd' id="cookieValue" type='password' value="" class=textbox maxlength=20  onkeyup="value=value.replace(/[\W]/g,'')"
   tabindex=2>&nbsp;&nbsp;
</td>
            </tr>
            <tr>
              <td align=left valign=middle >
examine
</td>
<td>
<input size="4" type="text" name='examine' value="" class=textbox maxlength=20 onKeyUp="value=value.replace(/[^\d|]/g,'')" tabindex=3>&nbsp;
    <img border=0 src="inc/image.jsp"  width="56">&nbsp;&nbsp;
</td>
            </tr>
</tavle>

Answer 4

思路：
打上“自动登陆" 写入Cookie
下次打开网页，先读出Cookie
用读出的Cookie验证

Answer 5

用cookie是正道,自己动手丰衣足食

Answer 6

我也是初次接触cookie，也想用cookie是先免登陆查看信息