使用ASP.NET MVC Controller中的as3 URLLoader加载数据(Loading data using as3 URLLoader from ASP.NET MVC Controller)

 ASP.NET控制器： 
 
// GET api/assets/5
public string Get(int id)
{
    ... <some DB init here>
    string sResult = (string)oCmd.ExecuteScalar();
    return sResult;
}
 
 AS3接收器： 
 
private function btnLoad_Click():void
{
    try
    {
        var urlRequest:URLRequest = new URLRequest("http://192.168.55.100/getimage/api/assets/1");
        oUrlLoader = new URLLoader();
        oUrlLoader.dataFormat = URLLoaderDataFormat.TEXT;
        oUrlLoader.addEventListener(Event.COMPLETE, onXMLDataLoaded, false, 0, true);
        oUrlLoader.load(urlRequest);
    }
    catch (ex:Error) {}
}
protected function onXMLDataLoaded(evt:Event):void {    
    try
    {
        var sData:String = oUrlLoader.data.toString();
        editor.paste_fromserver( XML(sData));
    }
    catch (ex:Error) { trace(ex.message); }
}
 
 现在我尝试做的是将字符串解析为XML，但我得到的只是错误：“错误＃1090：XML解析器失败：元素格式错误。” 
 
 我发现当我在“观察表达式”中观看oUrlLoader.data时，值就在那里，但是sData = oUrlLoader.data =“”“”（空字符串？）。 
 
 还试过oUrlLoader.data.toString（） - 没有帮助，但是监视表达式改变了一点，没有toString（）它在值的开始时有两个“”符号，而toString（）它只有一个“。 
 
 任何想法为什么设置了Watch Expression值中的oUrlLoader.data，但代码中的oUrlLoader.data不返回任何字符串？ 
 
 PS这实际上是字符串值（SVG图像），而不是二进制数据。 我正在使用Flash Builder for as3。 
 
 编辑： 
 
 呵呵，sData在Watch Expression中也有一个值。 数据是： 
 
"<?xml version=\"1.0\" encoding=\"utf-8\"?><!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\" \"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\"><svg version=\"1.2\" id=\"svg2\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:svg=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"><circle cx=\"284\" cy=\"310\" r=\"150\" id=\"untitled\" transform=\"matrix(1,0,0,1,-37,-22)\" style=\"opacity:1;stroke:#44F247;fill:#F087CA;fill-opacity:1;stroke-opacity:0.54;stroke-width:35.1;stroke-miterlimit:3;stroke-linecap:none;stroke-linejoin:round;\"/></svg>"
 
 当我复制此数据并将其直接粘贴在代码中它可以工作，但使用此urlLoader它不起作用... :( 
 
 EDIT2： 
 
 构建器的截图（监视表达式有值，代码中的sData，鼠标悬停时没有）： http ： //img9.imageshack.us/img9/7471/o7sa.png 
 
 还有......：]此字符串不包含源数据库中的任何制表符，新行或其他空格... 

ASP.NET controller:
 
// GET api/assets/5
public string Get(int id)
{
    ... <some DB init here>
    string sResult = (string)oCmd.ExecuteScalar();
    return sResult;
}
 
AS3 Receiver:
 
private function btnLoad_Click():void
{
    try
    {
        var urlRequest:URLRequest = new URLRequest("http://192.168.55.100/getimage/api/assets/1");
        oUrlLoader = new URLLoader();
        oUrlLoader.dataFormat = URLLoaderDataFormat.TEXT;
        oUrlLoader.addEventListener(Event.COMPLETE, onXMLDataLoaded, false, 0, true);
        oUrlLoader.load(urlRequest);
    }
    catch (ex:Error) {}
}
protected function onXMLDataLoaded(evt:Event):void {    
    try
    {
        var sData:String = oUrlLoader.data.toString();
        editor.paste_fromserver( XML(sData));
    }
    catch (ex:Error) { trace(ex.message); }
}
 
Now what i try to do is to parse string as XML, but all i get is error: "Error #1090: XML parser failure: element is malformed."
 
What i've found is when i watch oUrlLoader.data in "Watch Expression" the value is there, but sData = oUrlLoader.data = """" (empty string?).
 
Also tried oUrlLoader.data.toString() - didn't help, but watch expression changed a bit, without toString() it had two "" signs in the beggining of value, with toString() it had only one ".
 
Any ideas why oUrlLoader.data in Watch Expression value is set, but the same oUrlLoader.data in code does not return any string?
 
P.S. This is actually string value (SVG image), not binary data. I'm using Flash Builder for as3.
 
EDIT: 
 
Hehe, sData also have a value in Watch Expression. The data is:
 
"<?xml version=\"1.0\" encoding=\"utf-8\"?><!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\" \"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\"><svg version=\"1.2\" id=\"svg2\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:svg=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"><circle cx=\"284\" cy=\"310\" r=\"150\" id=\"untitled\" transform=\"matrix(1,0,0,1,-37,-22)\" style=\"opacity:1;stroke:#44F247;fill:#F087CA;fill-opacity:1;stroke-opacity:0.54;stroke-width:35.1;stroke-miterlimit:3;stroke-linecap:none;stroke-linejoin:round;\"/></svg>"
 
When i copy this data and paste it directly in code it works, but using this urlLoader it does not work... :(
 
EDIT2:
 
Screenshot from builder (watch expressions have value, sData in code, when mouse over - does not): http://img9.imageshack.us/img9/7471/o7sa.png
 
and also... :] this string does not contain any tabs, new lines or other white spaces in source database...

原文：https://stackoverflow.com/questions/19759450