关于cookie乱码问题

小弟自学编程，写了一个登陆demo。发现cookie存入中文，网页端取出时乱码，网上找了半天也没解决。 服务器端代码 UserModels.getUserByTP(tel,password,function (err,user) { if(user.length>0){ req.session.user=user; var username = user[0].username; res.cookie('name',username); console.log(encodeURI(username));//控制台也会出现乱码 res.render('sign/index',{login_success:"登陆成功"}); } }); js取cookie代码

$(function () {
(function changeUserName() {
    var name = getCookie('name');
    $('.username').text(name);
    console.log(name);
})();
function getCookie(cookie_name) {
    var allcookies = document.cookie;
    console.log(allcookies);
    var cookie_pos = allcookies.indexOf(cookie_name);
    console.log(cookie_pos);
    if (cookie_pos != -1)
    {
    // 把cookie_pos放在值的开始，只要给值加1即可。
        cookie_pos += cookie_name.length + 1;
        console.log(cookie_pos);
        var cookie_end = allcookies.indexOf(";", cookie_pos);
        console.log(cookie_end);
        if (cookie_end == -1) {
            cookie_end = allcookies.length;
        }
        var value = unescape(allcookies.substring(cookie_pos, cookie_end));
    }
    return value;
}