Flex读取浏览器参数

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这个类提供的功能有：

1. 从浏览器中获取完整的URL
2. 主机名
3. 当前所使用的协议
4. 端口
5. 主域名后面的路径
6. 参数值

原文地址：http://www.flexpasta.com/index.php/2008/03/15/getting-url-parameters-host-name-port-in-flex-actionscript/

package com.flexpasta.utils { import flash.external.ExternalInterface; import mx.core.Application; import mx.collections.ArrayCollection; import mx.controls.Alert; public class HTTPUtil { //-------------------------------------------------------------------------- // // Constructor // //-------------------------------------------------------------------------- /** * @private */ public function HTTPUtil() { super(); } /** * Returns the current url that the swf player lives in * */ public static function getUrl():String { return ExternalInterface.call("window.location.href.toString"); } /** * Returns the current host name. * example: http://www.flexpasta.com/?x=1&y=2 would return www.flexpasta.com */ public static function getHostName():String { return ExternalInterface.call("window.location.hostname.toString"); } /** * Returns the current protocol, such as http:, https:, etc * */ public static function getProtocol():String { return ExternalInterface.call("window.location.protocol.toString"); } /** * Gets the current port for the url */ public static function getPort():String { return ExternalInterface.call("window.location.port.toString"); } /** * Gets the context following the base of the url * Example http://www.flexpasta.com/test?x=1&y=2 would return /test */ public static function getContext():String { return ExternalInterface.call("window.location.pathname.toString"); } /** * Gets a url parameter value by name and returns it as a String. This function works without flash vars being passed into the swf. * For example, even if the url is something like, domain.com?MyFlexPage.html?b=5, it will still return 5 when 'b' is passed. * The function uses javascript to find the url paramters. Please note however that this will only work for a GET request and not a POST. */ public static function getParameterValue(key:String):String { var value:String; var uparam:String = ExternalInterface.call("window.location.search.toString"); if(uparam==null) { return null; } var paramArray:ArrayCollection = new ArrayCollection(uparam.split('&')); for(var x:int=0; x

PS：原文中有很多评论，有兴趣可以看一看，Flex 的mx.utils.URLUtil 也提供了很多有用的方法。