从Firefox扩展程序（XUL）读取网页Cookie [英] Reading web-page cookies from a Firefox extension (XUL)

问题描述

我正在为Firefox浏览器创建扩展程序。我想读一个由HTML页面使用JavaScript在XUL文件中设置的cookie。可能吗？

我尝试使用 document.cookie ，但它不工作：

  function readCookie（name）{
 var ca = document.cookie.split（';'）; 
 var nameEQ = name +=; 
 for（var i = 0; i  var c = ca [i]; 
 while（c.charAt（0）==''）c = c.substring（1，c.length）; // delete spaces 
 if（c.indexOf（nameEQ）== 0）return c.substring（nameEQ.length，c.length）; 
} 
 return; 
} 
 
函数createCookie（name，value，days）{
 if（days）{
 var date = new Date（）; 
 date.setTime（date.getTime（）+（days * 24 * 60 * 60 * 1000））; 
 var expires =; expires =+ date.toGMTString（）; 
} 
 else var expires =; 
 document.cookie = name +=+ value + expires +; path = /; 
} 
 
 function eraseCookie（name）{
 createCookie（name，，-1）; 
} 
  

你能帮我吗？提前感谢。

解决方案

这些代码段可能有助于

  ///通过这种方法，你可以通过它的名称或值来遍历每个cookie ... 
 
 function ReadCookie（）
 {
 var cookieMgr = Components.classes [@ mozilla.org/cookiemanager;1] 
 .getService（Components.interfaces.nsICookieManager）; 
 
 for（var e = cookieMgr.enumerator; e.hasMoreElements（）;）{
 var cookie = e.getNext（）。QueryInterface（Components.interfaces.nsICookie）; 
 dump（cookie.host +;+ cookie.name +=+ cookie.value +\\\
）; 
 
 ///您的代码在这里检查您的cookie或您的实现... 
 ///您可以使用cookie名称或值来选择您的cookie ... 
 
} 
} 
  

///如果您想按域名你可以使用这个代码...

  function GetCookie（）{
 try 
 {
 alert（Getting Cookies）; 
 var ios = Components.classes [@ mozilla.org/network/io-service;1] 
 .getService（Components.interfaces.nsIIOService）; 
 var uri = ios.newURI（http://www.yoursite.com/，null，null）; 
 
 var cookieSvc = 
 Components.classes [@ mozilla.org/cookieService;1] 
 .getService（Components.interfaces.nsICookieService）; 
 var cookie = cookieSvc.getCookieString（uri，null）; 
 
 ///您的逻辑在这里... 
} 
 catch（errorInfo）
 {
 alert（errorInfo）; 
} 
 
} 
  

希望这些将有助于： / p>

I'm creating an extension for the Firefox browser. I would like to read a cookie which was set by an HTML page using JavaScript in the XUL file. Is it possible?

I tried using document.cookie, but it doesn't work:

function readCookie(name) {
  var ca = document.cookie.split(';');
  var nameEQ = name + "=";
  for(var i=0; i < ca.length; i++) {
    var c = ca[i];
    while (c.charAt(0)==' ') c = c.substring(1, c.length); //delete spaces
    if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length, c.length);
    }
  return "";
}

function createCookie(name, value, days) {
  if (days) {
    var date = new Date();
    date.setTime(date.getTime()+(days*24*60*60*1000));
    var expires = "; expires="+date.toGMTString();
    }
  else var expires = "";
  document.cookie = name+"="+value+expires+"; path=/";
}

function eraseCookie(name) {
  createCookie(name, "", -1);
}

Could you help me? Thanks in advance.

解决方案

These code snippets may help

///By this method you can iterate throug each cookie by its name or value... 

function ReadCookie()   
{
var cookieMgr = Components.classes["@mozilla.org/cookiemanager;1"]
         .getService(Components.interfaces.nsICookieManager);

for (var e = cookieMgr.enumerator; e.hasMoreElements();) {
 var cookie = e.getNext().QueryInterface(Components.interfaces.nsICookie); 
  dump(cookie.host + ";" + cookie.name + "=" + cookie.value + "\n");

 ///Your code here to check your cookie or your implementation...
 ///You can use cookie name or value to select your cookie...

}
}

///If you want to read cookies by domain name you can use this code...

function GetCookie(){
try
{
alert("Getting Cookies");
    var ios = Components.classes["@mozilla.org/network/io-service;1"]
            .getService(Components.interfaces.nsIIOService);
var uri = ios.newURI("http://www.yoursite.com/", null, null);

var cookieSvc =
   Components.classes["@mozilla.org/cookieService;1"]
             .getService(Components.interfaces.nsICookieService);
var cookie = cookieSvc.getCookieString(uri, null);

///Your logic here...
}
catch (errorInfo)
{
    alert(errorInfo);
}

}

Hope these will help :)

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