Google Apps脚本中的Cookie处理 - 如何在标题中发送Cookie？ [英] Cookie handling in Google Apps Script - How to send cookies in header?

问题描述

我想写一个简单的脚本，从网页获取文本并处理该字符串。但是，该网站要求我登录。我成功登录该网站。这是我登入的方式：

  var payload = {name1：val1，name2：val2 ; 
 
 var opt = {payload：payload，method：post}; 
 
 var respose = UrlFetchApp.fetch（http： com / login，opt）; 
  

登录后，网站将我放在 http://website.com/home 。我检查了 response.getContentText（），我可以确认我已成功登录因为它包含来自 http://website.com/home 的文本
现在我需要获取 http：/ /website.com/page 并处理它。
我首先假设脚本可以自己处理cookie，然后继续

  var pagedata = UrlFetchApp.fetch（http://website.com/page);//不工作
  

这显然没有工作， pagedata.getContentText（）说我首先登录，这表示cookie没有成功传递..

然后我尝试提取服务器在登录期间响应的cookies，并将其与此请求一起发送。

  var cookie = response.getAllHeaders（）['Set-Cookie']; 
 
 //变量cookie现在包含合法的cookie。 
 
 //它包含'JSESSIONID = blabla; Path = /'和
 //它是服务器响应的唯一cookie。 
  

我尝试在我的网页请求中发送该Cookie。

  var header = {'Cookie'：cookie}; 
 
 var opt2 = {header：header}; 
 
 var pagedata = UrlFetchApp.fetch（http://website.com/page，opt2）; 
  

我想即使现在cookie没有正确发送，内容再次说我要登录。 p>

我正确传递Cookie吗？我需要关于在请求中发送Cookie的正确方法的帮助。

解决方案

在这里您可以找到cookie规范：
http://www.w3.org/Protocols/rfc2109/rfc2109

您的代码中有一个潜在的问题：
response.getAllHeaders（）['Set-Cookie']可以返回字符串或字符串表，如果多个'set-cookie'属性

第二步是从服务器返回。

错误代码：

  var opt2 = {header：header}; 
  

应为

  var opt2 = {headers：header}; 
  

请注意，GAS使用Google IP。可能发生两个连续的提取使用不同的IP。
您连接的服务器可能是会话IP依赖的。

您确定服务器在验证后只发送一个Cookie吗？

I'm trying to write a simple script that fetches text from a webpage and processes that string. But, that website requires me to be logged in. I was successful in logging in to that website. This is how I logged in:

var payload = {"name1":"val1","name2":val2"};

var opt ={"payload":payload,"method":"post"};

var respose = UrlFetchApp.fetch("http://website.com/login",opt);

After logging in, the website places me in http://website.com/home. I checked response.getContentText() and I can confirm that I have been logged in successfully as it contains the text from http://website.com/home. Now I need to get the contents of http://website.com/page and process it. I first assumed the script can handle cookies by itself and proceeded with

var pagedata = UrlFetchApp.fetch("http://website.com/page);//Did not work

That obviously didnt work and pagedata.getContentText() says me to login first, which indicates cookies were not successfully passed..

I then tried to extract cookies which the server responded during login and to send it along with this request.

var cookie = response.getAllHeaders()['Set-Cookie'];     

// variable cookie now contains  a legitimate cookie.

// It contains 'JSESSIONID=blabla;Path=/' and 
// it is the ONLY cookie that server responds.

I tried to send that cookie in my page request.

var header = {'Cookie':cookie};

var opt2 = {"header":header};

var pagedata = UrlFetchApp.fetch("http://website.com/page",opt2);

I think even now cookies were not properly sent, as the content again says me to login.

Am I passing cookies correctly? I need help regarding the correct method of sending cookies in a request.

解决方案

Here you can find cookies specification: http://www.w3.org/Protocols/rfc2109/rfc2109

You have a potential issue in your code: response.getAllHeaders()['Set-Cookie'] can return either a string or a table of string if multiple 'set-cookie' attributes are sent back from the server.

Eric is right, you cannot return the cookie without digesting it.

Second error in your code:

var opt2 = {"header":header};

should be

var opt2 = {"headers":header};

Be aware also that GAS uses Google IPs. It can happen that two consecutive fetch use different IPs. The server your are connecting to may be session-IP dependant.

Are you sure the server only send you back one cookie after an authentification ?

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