SecurityError：错误#2122：安全沙箱违规：LoaderInfo.content：

Question

我正在创建一个使用平铺和 xml 文件的游戏。我正在尝试从外部服务器检索这些文件。当我在本地计算机上以调试模式运行该程序时，它运行得很好。但是当我上传到服务器时。我收到此错误

SecurityError: Error #2122: Security sandbox violation: LoaderInfo.content:
A policy file is required, but the checkPolicyFile flag was not set when this media was loaded.

下面是我的代码

private function init():void
        {
            game = new EngineApi();
            gameObject.eApi = game;
            gameObject.EG = this;
            game.Tiling(true,800,640,80,80);
            game.tileEg.offsY = 7000;
            game.tileEg.ScrollLoop(true,0,1,true);//0,1
            context.checkPolicyFile = true;
            flash.system.Security.loadPolicyFile("http://mysite.com/images/tileSheet.png");
            flash.system.Security.loadPolicyFile("http://mysite.com/images/world.xml");//map 0
            flash.system.Security.loadPolicyFile("http://mysite.com/images/world1.xml");//map 1

            flash.system.Security.loadPolicyFile("http://mysite.com/images/world7.xml");//world 7 and 8 are train track maps. map 2
            flash.system.Security.loadPolicyFile("http://mysite.com/images/world8.xml");//map 3
            flash.system.Security.loadPolicyFile("http://mysite.com/images/world9.xml");//Ending of 8 //map 4
            flash.system.Security.loadPolicyFile("http://mysite.com/images/world10spaceInvader.xml");//Beginning of tracks being centered //map 5
            flash.system.Security.loadPolicyFile("http://mysite.com/images/world11LoopBoss.xml");//Tracks loop (you fight boss) //map 6
            flash.system.Security.loadPolicyFile("http://mysite.com/images/world12toDesert.xml");//map 7
            flash.system.Security.loadPolicyFile("http://mysite.com/images/world2.xml");//map 8
            flash.system.Security.loadPolicyFile("http://mysite.com/images/world3.xml");//map 9
            flash.system.Security.loadPolicyFile("http://mysite.com/images/world13DesertDoubleTrain.xml");//map 10
            flash.system.Security.loadPolicyFile("http://mysite.com/images/world14DoubleTrain.xml");//map 11



            game.AddTileSheet("http://mysite.com/images/tileSheet.png");
            game.tw = 80;
            game.th = 80;
            game.LoadTileSheets();

            game.addEventListener("tileLoadComplete", prePareTiles);
            //anything labeled with map (i.e. map 1) is the order of how the game see's it

            game.addXml("http://mysite.com/images/world.xml");//map 0
            game.addXml("http://mysite.com/images/world1.xml");//map 1

            game.addXml("http://mysite.com/images/world7.xml");//world 7 and 8 are train track maps. map 2
            game.addXml("http://mysite.com/images/world8.xml");//map 3
            game.addXml("http://mysite.com/images/world9.xml");//Ending of 8 //map 4
            game.addXml("http://mysite.com/images/world10spaceInvader.xml");//Beginning of tracks being centered //map 5
            game.addXml("http://mysite.com/images/world11LoopBoss.xml");//Tracks loop (you fight boss) //map 6
            game.addXml("http://mysite.com/images/world12toDesert.xml");//map 7
            game.addXml("http://mysite.com/images/world2.xml");//map 8
            game.addXml("http://mysite.com/images/world3.xml");//map 9
            game.addXml("http://mysite.com/images/world13DesertDoubleTrain.xml");//map 10
            game.addXml("http://mysite.com/images/world14DoubleTrain.xml");//map 11
            game.loadXmlMaps();


            clouds = new CloudManager(5);
            clouds.minSpeed = 25;
            clouds.maxSpeed = 35;
            game.addGameChild(clouds);

        }

下面是我的 EngineApi() 类中

    public function addXml(path:String):void
            {
                xmlDatas.push(path);
            }


public function loadXmlMaps():void
        {
            var gLoader = new gameLoader();
            gLoader.xmlToArray(xmlDatas.shift(),10,100);
            gLoader.addEventListener("xmlComplete", FinishXmlMaps);
        }

        public function FinishXmlMaps(e:Event)
        {
            if(useTiles)
            {
                tileEg.mapHolder.push(gameLoader(e.currentTarget).tileArray);
            }

            if(xmlDatas.length > 0)
            {
                loadXmlMaps();              
            }else
            {
                dispatchEvent(new Event("XMLSCOMPLETE"));
            }
        }

这是我的 gameLoader 类中的代码

 public function xmlToArray(s:String, cols:Number, rows:Number):void 
        {
            this.cols = cols;
            this.rows = rows;

            //load in tile sheet image
            var xmlLoader;
            xmlLoader = new URLLoader();
            xmlLoader.addEventListener(Event.COMPLETE, xmlLoadComplete);
            xmlLoader.load(new URLRequest(s));
        }

        private function xmlLoadComplete(e:Event):void
        {
            var mazeData = new XML(e.currentTarget.data) as XML;
            //loop through xml and add rows and columns to aTileMap array
            for (var rowCtr=0;rowCtr<rows;rowCtr++) {
                var tempArray:Array=new Array();

                for (var colCtr=0;colCtr<cols;colCtr++) {
                    tempArray.push(mazeData.tilerow[rowCtr].tilecol[colCtr]);
                }               
                tileArray.push(tempArray);
            }
            trace("xml done");
            dispatchEvent(new Event("xmlComplete"));
        }//END XMLLOAD

下面的代码几乎是数据检索 xml 并将其转换为数组的过程。这一切都有效。我刚刚收到错误，因为我猜这是跨域问题。我的问题是我该如何解决它。

Answer 1

在我看来，您似乎以错误的方式使用 Security.loadPolicyFile 函数。它用于读取控制服务器如何允许 Flash Player 从中获取数据的特殊 XML 文件，而不是用于加载图像或其他文件，如 loadPolicyFile("http://mysite.com/images/tileSheet.png") 调用您所拥有的。

以下是 Security.loadPolicyFile 的文档：

http://help.adobe.com/en_US/AS3LCR/Flash_10.0/flash/system/Security.html#loadPolicyFile()

以下是有关策略文件的信息：

http://help.adobe.com/en_US/ActionScript/3.0_ProgrammingAS3/WS5b3ccc516d4fbf351e6 3e3d118a9b90204-7e08.html

关于如何解决跨域问题，最简单的方法是在服务器的根目录下放置一个crossdomain.xml文件。在其中，您可以指定允许哪些域从服务器获取数据。您可以使用 * 来允许任何域。以下是允许任何域的 crossdomain.xml 示例：

http://api.flickr.com/ crossdomain.xml

Flash Player 将在必要时自动查找该文件，并且您的 ActionScript 代码不需要自行执行任何进一步的操作。

使用 Security.loadPolicyFile() 主要用于需要更多受控和/或细粒度跨域策略的情况。