如何把request param data传给flex app

参考文档

1. 关于flex html template wrapper （以后的文章详细讲解）: http://help.adobe.com/en_US/flex/using/WS2db454920e96a9e51e63e3d11c0bf663fe-7fff.html

2. Creating a wrapper: http://help.adobe.com/en_US/flex/using/WS2db454920e96a9e51e63e3d11c0bf69084-7ecf.html

3. 通过flashvar property来把request param data传给flexapp: http://help.adobe.com/en_US/flex/using/WS2db454920e96a9e51e63e3d11c0bf626ae-7feb.html

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4. Flex app直接从URL fragments获取：http://help.adobe.com/en_US/flex/using/WS2db454920e96a9e51e63e3d11c0bf69084-7e9c.html

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先看如何通过flashvarproperty来把requestparam data传给flexapp：

Step 1 create a flex project

Step 2 open /html-template/index.template.html file,and find following codes

???????????? var flashvars ={};

Step 3 add following 2 line codes below it

??????????? flashvars.firstname= "Nick";

??????????? flashvars.lastname= "Danger";

如果是用JSP page，则可以为

??????????? flashvars.firstname= "<%= request.getParameter("firstname")%>";

??????????? flashvars.lastname= "<%= request.getParameter("lastname")%>";

还可以通过在swf的file path里添加param来代替上面这2行代码 （下面这种方式和上2行代码的作用一样！选择其中一种方式即可)

??????? <script type="text/javascript">
??????????? var swfVersionStr = "0";
??????????? var xiSwfUrlStr = "";
??????????? var flashvars = {};
??????????? var params = {};
??????????? params.quality = "high";
??????????? params.bgcolor = "#ffffff";
??????????? params.allowscriptaccess = "sameDomain";
??????????? var attributes = {};
??????????? attributes.id = "FlashVarTest";
??????????? attributes.name = "FlashVarTest";
??????????? attributes.align = "middle";
??????????? swfobject.embedSWF(
??????????????? "FlashVarTest.swf?firstname=Nick&lastname=Danger",
??????????????? "flashContent","100%",
??????????????? swfVersionStr,xiSwfUrlStr,
??????????????? flashvars,params,attributes);
??????? </script>

注意：flashVars properties的值必须是URL encoded,而且该值所包含的参数之间用“&”来连接

Step 4 (optional) 在index.template.html里你还会看到flash object tag <object>在<noscript>file里，要使其使用flashvar，你的<object>应该添加flashvar param

???<object id='mySwf' classid='clsid:D27CDB6E-AE6D-11cf-96B8-444553540000' height='100%' width='100%'>

???????<param name='src' value='FlashVarTest.swf'/>

?????? ?<param name='flashVars' value='firstname=Nick&lastname=Danger'/>

?????? .......

Step 5 在flex app里如何获取flashvar传来的data

<s:Application ... creationComplete="initVars()">??? ?
?????? <fx:Script><![CDATA[
????????? public var firstName:String;
????????? public var lastName:String;
????????? ?
????????? private function initVars():void {
?????????????? firstName = mx.core.FlexGlobals.topLevelApplication.parameters.firstname;
?????????????? lastName = mx.core.FlexGlobals.topLevelApplication.parameters.lastname;
????????? }
???? ]]></fx:Script>
??? ?
???? .....????? ?
</s:Application>

如果要获取flashvar里的所有params，那么使用下列代码

????????????? for (var i:String in FlexGlobals.topLevelApplication.parameters) {
??????????????????? label1.text += i + ":" + FlexGlobals.topLevelApplication.parameters[i] + "n";
????????????? }

Step 6 run the flex app

再看如何直接在flex app里解析URL里的param：

BrowserManager是一个Singleton管理器，用于充当浏览器和应用程序之间的代理。使用它可以访问浏览器地址栏中的URL，这与访问 JavaScript中的document.location属性类似。当url属性发生更改时调度这些事件。然后侦听器可以响应、更改该URL和/或阻止其它对象获取此事件。

注意：URL里的params是跟在"#"后面，而不是跟在"?"后面！！例如

????????? http://www.mydomain.com/MyApp.html#firstName=Nick&lastName=Danger

Flex app里直接获取URL的param的代码

import mx.managers.BrowserManager;
import mx.managers.IBrowserManager;
import mx.utils.URLUtil;
?? ??? ??? ?
private function init():void {
?? ?var bm:IBrowserManager = BrowserManager.getInstance();?????????????? ?
?? ?bm.init("","Welcome!");?? ??? ?
?? ?//call URLUtil stringToObject method to convert parameters to an object,第二个参数是param之间的分隔符
?? ?//假设URL为http://xxx/MyApp.html#firstName=Nick&lastName=Danger，则分隔符为&
?? ?var o:Object = URLUtil.stringToObject(bm.fragment,"&");????
?? ?label1.text=o.firstName + " " + o.lastName; }???