Flex 3:从 URL 获取变量 [英] Flex 3: Getting variables from URL
本文介绍了Flex 3:从 URL 获取变量的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
如果我有一个位于 http://sitename.com/myapp/ 的应用程序,并且我想通过 url 传入一个变量(即 - http://sitename.com/myapp/?name=Joe),如何将该名称变量转换为字符串变量?
If I have an application located at http://sitename.com/myapp/ and i want to pass in a variable via the url (i.e. - http://sitename.com/myapp/?name=Joe), how can I get that name variable into a string var?
推荐答案
我使用 Adobe 提供的类 在本文中.
I use the class Adobe provided in this article.
package
{
import flash.external.*;
import flash.utils.*;
public class QueryString
{
private var _queryString:String;
private var _all:String;
private var _params:Object;
public function get queryString():String
{
return _queryString;
}
public function get url():String
{
return _all;
}
public function get parameters():Object
{
return _params;
}
public function QueryString()
{
readQueryString();
}
private function readQueryString():void
{
_params = {};
try
{
_all =
ExternalInterface.call("window.location.href.toString");
_queryString =
ExternalInterface.call("window.location.search.substring", 1);
if(_queryString)
{
var params:Array = _queryString.split('&');
var length:uint = params.length;
for (var i:uint=0,index:int=-1; i 0)
{
var key:String = kvPair.substring(0,index);
var value:String = kvPair.substring(index+1);
_params[key] = value;
}
}
}
}catch(e:Error) { trace("Some error occured.
ExternalInterface doesn't work in Standalone player."); }
}
}
}
更新:此类的更新版本也可以可以在这里找到,虽然我还没有尝试过这个.
UPDATE: An updated version of this class can also be found here, although I haven't tried this one.
更新 2:下面是一个关于如何使用 Querystring 类的示例:
UPDATE 2: Here's an example on how to use the Querystring class:
public function CheckForIDInQuerystring():void
{
// sample URL: http://www.mysite.com/index.aspx?id=12345
var qs:QueryString = new QueryString;
if (qs.parameters.id != null)
{
// URL contains the "id" parameter
trace(qs.parameters.id);
}
else
{
// URL doesn't contain the "id" parameter
trace("No id found.");
}
}
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