如何解决 401 未经授权的错误？

Question

我想从这个站点输出一些值。使用浏览器检查器，我找到了包含我想要的信息的 JSON的URL。使用 JSON 后，我可以很好地提取值。

问题是 JSON 的 URL 仅在有限的时间内有效。如果我稍后尝试访问它（通过浏览器或通过脚本的 UrlFetch），我会得到：

{
"status": 401,
"response": "unauthorized"
}

由于我想定期检查目标 JSON，我想找到一种方法来授权请求​​。有任何想法吗？

谢谢！

PS：这是我迄今为止尝试过的（谷歌应用程序脚本）：

function getUserAndJSON(){
  var url = 'https://asunnot.oikotie.fi/api/cards?cardType=100&conditionType%5B%5D=1&conditionType%5B%5D=2&limit=24&locations=%5B%5B1669,4,%22Lauttasaari,%20Helsinki%22%5D,%5B14714,5,%2200340,%20Helsinki%22%5D%5D&lotOwnershipType%5B%5D=1&offset=0&price%5Bmax%5D=600000&price%5Bmin%5D=150000&roomCount%5B%5D=3&size%5Bmin%5D=35&sortBy=published_sort_desc';

  var opt = {
    "method": "GET", 
    "muteHttpExceptions": true,
    "escaping":false,
    "headers":JSON.parse(user)
  }
  var str = UrlFetchApp.fetch(url,opt).getContentText();
  Logger.log(str); //error 401
}

Answer 1

解决此问题的一种方法是在浏览器检查器（在我的情况下为 Opera）中简单地使用选项“复制为...> 获取”，它给出以下内容（与浏览器发送的标题略有不同）：

fetch("https://asunnot.oikotie.fi/api/cards?cardType=100&conditionType%5B%5D=1&conditionType%5B%5D=2&limit=24&locations=%5B%5B1669,4,%22Lauttasaari,+Helsinki%22%5D,%5B14714,5,%2200340,+Helsinki%22%5D%5D&lotOwnershipType%5B%5D=1&offset=0&price%5Bmax%5D=600000&price%5Bmin%5D=150000&roomCount%5B%5D=3&size%5Bmin%5D=35&sortBy=published_sort_desc", {"credentials":"omit","headers":{"accept":"application/json","ota-cuid":"fd2a3a03d52a2721f9a9aa844ddf7eef2ac66ed6","ota-loaded":"1586685082","ota-token":"ab7e9f830a7dff3a9b01fbdcbc899ed7bfa659a4793103f1943e83ef5f938b16","sec-fetch-dest":"empty"},"referrer":"https://asunnot.oikotie.fi/myytavat-asunnot?conditionType%5B%5D=1&conditionType%5B%5D=2&locations=%5B%5B1669,4,%22Lauttasaari,%20Helsinki%22%5D,%5B14714,5,%2200340,%20Helsinki%22%5D%5D&lotOwnershipType%5B%5D=1&price%5Bmax%5D=600000&price%5Bmin%5D=150000&size%5Bmin%5D=35&roomCount%5B%5D=3&cardType=100","referrerPolicy":"no-referrer-when-downgrade","body":null,"method":"GET","mode":"cors"});

我在 GAS 中使用的方式如下：

function testGetJSON(){
 var str = UrlFetchApp.fetch("https://asunnot.oikotie.fi/api/cards?cardType=100&conditionType%5B%5D=1&conditionType%5B%5D=2&limit=24&locations=%5B%5B1669,4,%22Lauttasaari,+Helsinki%22%5D,%5B14714,5,%2200340,+Helsinki%22%5D%5D&lotOwnershipType%5B%5D=1&offset=0&price%5Bmax%5D=600000&price%5Bmin%5D=150000&roomCount%5B%5D=3&size%5Bmin%5D=35&sortBy=published_sort_desc",
 {"credentials":"omit",
"headers":{"accept":"application/json","ota-cuid":"fd2a3a03d52a2721f9a9aa844ddf7eef2ac66ed6","ota-loaded":"1586685082","ota-token":"ab7e9f830a7dff3a9b01fbdcbc899ed7bfa659a4793103f1943e83ef5f938b16","sec-fetch-dest":"empty"},"referrer":"https://asunnot.oikotie.fi/myytavat-asunnot?conditionType%5B%5D=1&conditionType%5B%5D=2&locations=%5B%5B1669,4,%22Lauttasaari,%20Helsinki%22%5D,%5B14714,5,%2200340,%20Helsinki%22%5D%5D&lotOwnershipType%5B%5D=1&price%5Bmax%5D=600000&price%5Bmin%5D=150000&size%5Bmin%5D=35&roomCount%5B%5D=3&cardType=100","referrerPolicy":"no-referrer-when-downgrade","body":null,"method":"GET","mode":"cors"});
  Logger.log(str.getContentText());
}

哪个工作得很好。

谢谢大家的提示和建议！