从第三方API设置cookie

Question

我有一个ExpressJS应用程序接口和一个Vue前端。在前端，我对后端进行API调用。前端托管在(示例) q.front.com上，后端托管在x.back.dev上。它们都有HTTPS连接。现在如何设置cookie并在API上再次接收cookie？

我已经尝试了set-cookie: set-cookie: fatham=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJleHAiOjE2MzYzMzE0MTcsImlhdCI6MTYzMzczOTQxNzc1NiwianRpIjoiYzllYzdkMWEtYzAwZS00OWU1LTkyMTQtMTljYjU5ZjhkMmJjIiwiaXNzIjoiVk9MVElBQyIsInN1YiI6ImluZm9AZG9ycHN3YWFyZC5jb20ifQ.6z0m3tGo3z7q4L35V0hdyqXC_ZjhtJJC0pktcUwQOLg；Path=/；Secure；SameSite=None

set-cookie: fatham=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJleHAiOjE2MzYzMzE0MTcsImlhdCI6MTYzMzczOTQxNzc1NiwianRpIjoiYzllYzdkMWEtYzAwZS00OWU1LTkyMTQtMTljYjU5ZjhkMmJjIiwiaXNzIjoiVk9MVElBQyIsInN1YiI6ImluZm9AZG9ycHN3YWFyZC5jb20ifQ.6z0m3tGo3z7q4L35V0hdyqXC_ZjhtJJC0pktcUwQOLg;SameSite=None; Secure;Domain=x.back.dev;path=/;

但是在任何域中都没有设置cookie ...

Answer 1

下面是一个简单的示例，说明了如何做到这一点

function setCookie(cname, cvalue, exdays) {
  const d = new Date();
  d.setTime(d.getTime() + (exdays * 24 * 60 * 60 * 1000));
  let expires = "expires="+d.toUTCString();
  document.cookie = cname + "=" + cvalue + ";" + expires + ";path=/";
}

function getCookie(cname) {
  let name = cname + "=";
  let ca = document.cookie.split(';');
  for(let i = 0; i < ca.length; i++) {
    let c = ca[i];
    while (c.charAt(0) == ' ') {
      c = c.substring(1);
    }
    if (c.indexOf(name) == 0) {
      return c.substring(name.length, c.length);
    }
  }
  return "";
}

function checkCookie() {
  let user = getCookie("username");
  if (user != "") {
    alert("Welcome again " + user);
  } else {
    user = prompt("Please enter your name:", "");
    if (user != "" && user != null) {
      setCookie("username", user, 365);
    }
  }
}