Flex中如何打开网页及Get/Post数据 转

//按下按钮，打开网页

btnOpen.addEventListener(MouseEvent.CLICK,

　function(){

　navigateToURL(new URLRequest("http://www.g.cn/search?hl=zh-CN&q=" + encodeURIComponent(txtId.text)),"_blank");

});

 

//以Get方式发送数据(发送就完事，不会理会服务端是否响应)

btnSend.addEventListener(MouseEvent.CLICK,

　function(){

　sendToURL(new URLRequest("/default.aspx?q=" + encodeURIComponent(txtId.text)));

});

btnPost.addEventListener(MouseEvent.CLICK,fnPostData);

 

//以Post方式发送数据(同样：发送就完事，不会理会服务端是否响应)

function fnPostData(e:MouseEvent) {

　var _urlReq:URLRequest = new URLRequest();

　_urlReq.url = "/default.aspx";

　_urlReq.method = URLRequestMethod.POST;

　var _data:URLVariables = new URLVariables();

　_data.q = "菩提树下的杨过"; //即传递 q = 菩提树下的杨过,注：经测试，Flash会自动对传递的数据做encodeURIComponent处理，所以此外不能再加encodeURIComponent，否则就是二次编码了

　_urlReq.data = _data;

　sendToURL(_urlReq);

}

　　

protected void Page_Load(object sender, EventArgs e)

{

　string q = Request["q"];

　if (!string.IsNullOrEmpty(q)) {

　　string _file = Server.MapPath("~/log.txt");

　　File.AppendAllText(_file,q + "\t" + Request.HttpMethod + "\t" + DateTime.Now + Environment.NewLine);

　}

}

　　

var loader:URLLoader = new URLLoader();

configureListeners(loader);

var request:URLRequest=new URLRequest("/FlashHander.ashx?q=" + encodeURIComponent("菩提树下的杨过"));

try {

　loader.load(request);

} catch (error:Error) {

　trace("Unable to load requested document.");

}

 

//定义各种情况的回调函数

function configureListeners(dispatcher:IEventDispatcher):void {

　dispatcher.addEventListener(Event.COMPLETE, completeHandler);

　dispatcher.addEventListener(Event.OPEN, openHandler);

　dispatcher.addEventListener(ProgressEvent.PROGRESS, progressHandler);

　dispatcher.addEventListener(SecurityErrorEvent.SECURITY_ERROR, securityErrorHandler);

　dispatcher.addEventListener(HTTPStatusEvent.HTTP_STATUS, httpStatusHandler);

　dispatcher.addEventListener(IOErrorEvent.IO_ERROR, ioErrorHandler);

}

 

//加载完成时，将触发

function completeHandler(event:Event):void {

　var loader:URLLoader=URLLoader(event.target);

　trace("completeHandler: " + loader.data);

　lblReceive.text = loader.data; //本例中，服务端返回： msg=Hello World&Method=GET&q=菩提树下的杨过

　var vars:URLVariables=new URLVariables(loader.data);

　trace("The Method is " + vars.Method); //服务端返回的字符串中如果有 Method=xxx 这样的字符，则Flash中可以直接用vars.Method进行访问

}

 

//刚开始请求时，将触发

function openHandler(event:Event):void {

　trace("openHandler: " + event);

}

 

//下载进度发生变化时，将触发(可利用这个做加载进度条)

function progressHandler(event:ProgressEvent):void {

　trace("progressHandler loaded:" + event.bytesLoaded + " total: " + event.bytesTotal);

}

 

//因安全原因出现错误时，将触发

function securityErrorHandler(event:SecurityErrorEvent):void {

　trace("securityErrorHandler: " + event);

}

 

//http请求状态变化时，将触发

function httpStatusHandler(event:HTTPStatusEvent):void {

　trace("httpStatusHandler: " + event);

}

 

//io错误时，将触发

function ioErrorHandler(event:IOErrorEvent):void {

　trace("ioErrorHandler: " + event);

}

　　

/// <summary>

/// Summary description for FlashHander

/// </summary>

public class FlashHander : IHttpHandler

{

　public void ProcessRequest(HttpContext context)

　{

　　context.Response.ContentType = "text/plain";

　　context.Response.Write("msg=Hello World&Method=" + context.Request.HttpMethod + "&q=" + context.Request["q"]);

　}

　public bool IsReusable

　{

　　get

　　{

　　　　return false;

　　}

　}

}

作者：菩提树下的杨过
出处：http://yjmyzz.cnblogs.com