[英]how to get in java value of a cookie that was created in javascript?
我在javascript中創建了一個cookie,但是當我嘗試在java中獲取值時,卻得到了以前的值-cookie沒有刷新。 有什么方法可以刷新Cookie,以便獲得正確的值? 那是javascript:
<script>
function setCookie(name,value,days) {
if (days) {
var date = new Date();
date.setTime(date.getTime()+(days*24*60*60*1000));
var expires = "; expires="+date.toGMTString();
}
else {
var expires = "";
}
document.cookie = name+"="+value+expires+"; path=/";
alert (value);
}
function getCookie(c_name)
{
var i,x,y,ARRcookies=document.cookie.split(";");
for (i=0;i<ARRcookies.length;i++)
{
x=ARRcookies[i].substr(0,ARRcookies[i].indexOf("="));
y=ARRcookies[i].substr(ARRcookies[i].indexOf("=")+1);
x=x.replace(/^\s+|\s+$/g,"");
if (x==c_name)
{
return unescape(y);
}
}
}
function del_cookie(name) {
document.cookie = name +
'=; expires=Thu, 01-Jan-70 00:00:01 GMT;';
}
$j(document).ready(function(){
// remove all click-events from header_nav_submenu
$j(".header_nav_submenu").unbind('click');
$j(".header_nav_submenu").click(function(){
var goHref = $j(this).attr('href');
del_cookie("last_page_nav");
alert(getCookie("last_page_nav"));
setCookie("last_page_nav", goHref.substring(7), 7);
alert(getCookie("last_page_nav"));
});
});
</script>
這就是我嘗試從Java Cookie中獲取值的方法:
if(FriendlyURLUtil.getFriendlyURL(request.getServerName())==null){
Cookie[] cookies = ((HttpServletRequest) request).getCookies();
for(int i = 0; i < cookies.length; i++) {
if (cookies[i].getName().equals("last_page_nav")) {
System.out.println("The days " + cookies[i].getMaxAge());
System.out.println("The cookie says " + cookies[i].getValue());
((HttpServletResponse) response).sendRedirect(cookies[i].getValue());
}
}
}
您的Cookie在格林威治標准時間01-Jan-70 00:00:01(即70 AC)的1月1日(即1940年)過期。 這就是服務器端未收到它的原因。 檢查您創建失效日期的方式。
刪除舊的Cookie
document.cookie = ckName +“ =” +“; expires =星期四,70年1月1日00:00:01 GMT”;
如果(document.cookie.length> 0){c_start = document.cookie.indexOf(ckName +“ =”);
如果(c_start!= -1){c_start = c_start + ckName.length +1; c_end = document.cookie.indexOf(“;”,c_start); 如果(c_end == -1)c_end = document.cookie.length; 返回unescape(document.cookie.substring(c_start,c_end)); }
}
您可以從HttpServletRequest獲取cookie
Cookie [] cookie = request.getCookies();
如果您想要所有cookie名稱和值,請對數組進行迭代
for(int index = 0; index <cookies.length; index ++){ckName = cookies [index] .getName(); ckValue = Cookies [index] .getValue(); }
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