js操作cookie总结 及乱码

时间:2022-10-01 19:22:59
涉及到cookie的 setPath问题: https://blog.csdn.net/damys/article/details/49737905
cookie注解:public voic getxxx(@CookieValue(MOBILE_CLIENT) String client, Model model){......}
//获取所有document.cookie的值
document.cookie = "xxx"; //当前页面的静态路径
var cookies2 = document.cookie.split(';');//cookies
//设置cookies
function setCookie(name,value) { //写cookies
var exp = new Date(); //获取当前时间
var Days = 30; //将exp设置为n天以后的时间
exp.setTime(exp.getTime() + Days * 24 * 60 * 60 * 1000); //格式化为cookie识别的时间
document.cookie = name + "=" + value + ";expires=" + exp.toGMTString(); //设置cookie
} //得到cookies
// function getCookie(name) { // |jack;;| 次写法无法匹配英文括号!
// var arr, reg=new RegExp( "(^| )"+name+"=([^;]*)(;|$)" );
// if(arr=document.cookie.match(reg)) return arr[2];
// else return null;
// }
function getCookie(c_name) {
if(document.cookie.length > 0) {
var c_start = document.cookie.indexOf(c_name + "=");//获取字符串的起点
if(c_start != -1) {
c_start = c_start + c_name.length + 1;//获取值的起点
c_end = document.cookie.indexOf(";", c_start);//获取结尾处
if(c_end == -1) c_end = document.cookie.length;//如果是最后一个,结尾就是cookie字符串的结尾
return decodeURI(document.cookie.substring(c_start, c_end));//截取字符串返回
}
}
return "";
}
//清除所有cookie函数
function clearAllCookie() {
var keys = document.cookie.match(/[^ =;]+(?=\=)/g);
if(keys) {
for(var i = keys.length; i--;)
document.cookie = keys[i] + '=0;expires=' + new Date(0).toUTCString()
}
}
//去空格
function trimStr(str) {
return str.replace(/(^\s*)|(\s*$)/g, "");
}

注:保存的cookie会自动在每个key前面插入一个空格!(cookie 存储。默认是  一个 键值就隔着一个空格的。。。。   这样的潜规则)

W3school JavaScript cookies教程:  http://www.w3school.com.cn/js/js_cookies.asp

cookie乱码 解决:  前台的  encodeURIComponent(value)      配合     后台的 URLDecoder.decode(cookie.getValue(),"UTF-8");

response.setContentType("text/html;charset=UTF-8");
    public static void writeCookie(HttpServletResponse response, String key, Object value) throws UnsupportedEncodingException {
writeCookie(response, key, ObjectUtils.writeValueAsString(value));
} public static void writeCookie(HttpServletResponse response, String key, String value) throws UnsupportedEncodingException {
String urlValue=URLEncoder.encode(value, "utf-8");
Cookie cookie = new Cookie(key, urlValue);
// cookie.setPath("/");
cookie.setPath("/quality/public/mobile/qa/classInfo/answer"); //输出的到某个页面// cookie.setHttpOnly(true);
cookie.setMaxAge(30 * 24 * 60 * 60);
// cookie.setMaxAge(0);
response.addCookie(cookie);
}