Flash二进制加载图片的另外一种思路

来源:互联网 发布:中网数据股份有限公司 编辑:程序博客网 时间:2024/05/17 02:25

直接上代码:

package{import com.sociodox.utils.Base64;import flash.display.Bitmap;import flash.display.Loader;import flash.display.Sprite;import flash.events.Event;import flash.system.LoaderContext;import flash.utils.ByteArray;/** * ... * 加载二进制格式图片的例子,当然可以使用URLLoader来进行而进行二进制加载,而这里提供了 * 另一种方法,这种方式比较适合校验码的加载 * 参考网址http://blog.sina.com.cn/s/blog_557bc46501017lgh.html * @author aisajiajiao */public class Main extends Sprite{public function Main(){init();}private function init():void{var captchaLc:LoaderContext = new LoaderContext();captchaLc.requestedContentParent = stage;//这个字符串实际上是一个验证码图片转换而来。你可以转换一张自己的图片来代替。但请注意删除所有回车!//转换网址:http://www.motobit.com/util/base64-decoder-encoder.aspvar captchaStr:String = "iVBORw0KGgoAAAANSUhEUgAAAGMAAAAeCAIAAAC35TfdAAAABmJLR0QA/wD/AP+gvaeTAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAWYElEQVRogb15aXBc13XmvW/fel/RO/aVAEkA3CVR1GLZWiLZkVWys9ixZ4mTVGaSccZVSc3UTOXHpOZfqsZVqYknmSlnc2yVFcmOJEoUSREkAZDEToBoLN1AA43eu9/rfq/feudHUyBIQh5nsnw/UNUH957tnnPeuffAXK4BPgVCFrJAU5TLm1mKp72dYYzAwWFACBUKZUVRvV4Xz7OHrvkXQL6WqTZKAUfEwXv2FVvMlywERoLef1pZxMEfsiqmC3OV+q5gePQkubaz7gx4Y/EEzwsQwoMrIYQYhm1tZRsNube3HccPd+g/NyDEAUAWQgeJOMR003hkpWlaDUW3LGQXaAAQhmGGqVnIJHEaQuznkYV/+9u/v/+DxGmPEHHbonVNnl289cHFv5+4fg3D8e7uPgx7lB3HsYGAp1arFwplhqFpmvr/MvYfhaYmy1qdowWW4lsU07LKTQ0AEBC4gytV3djN1Zc3i5lCjaMpgtQqjWxTFTGMwDAC+zmc9dAKCCGG4RTG6yqxvrs9v7owOX3jJz99O5VaP3Qzw9DhsF9V9a2tXVlW0MNn+y8Aw9J1Q+Vo2z6loRuqYTDEQ7mimZqkiVUzL+NFE5c3d2rpbVWV6b1Cea+0ZT4WgIeCeJxUrVaWl5bSG9t1UTENc3Pz3ocTPzDZCwLj5mgnQwkUwWIQb+Ujz3NdXbHt7Wwyme7oiNps/D/O9n8YNEOtyWWaoPcpEEASw2Rd3xXrQY6Wm2JBEyW9YZombydH/SEa2Go1c2Yxt7medTBSMAHYY0zA3QkBBAA8UmQO4qHsQwhJkrS0NH/t2pVUajPUFtI0XW7INprv7kzoeLOuFiWlZCGToWwYhrdY0zTFcUw2WygWK+Fw4J/TM49CM1SpWaUJjqOFFoUmcI4kRFXLN5qkVpdTtxS1Hm3r99F+SuUru8q9he1bn9xdmb6bnE3u7tSGj/f4AnShlqJJnsQpAOBnOetBTCGENE0rFHLLy4vLy4t+v39s7OTKyt1rn1xeWVyvJbXo6UHCQYhKoSimCZxyC+H9Wsjz3MhI31oyde3arWPHBnieO1TYPzlsjCPq7uTohwKZJYmow5aV5NVS3mGxCdLeqOiLi2vplb3kyk56M6fIqtY0dMN89Y2zp8dGcFyrZasb4h2PN+SmQ6hpGfWmVpcNRaPsnLsv/qinLMtqNBrJ5MqNG9cghP39gyMjxyOR6OzsHVlVUtuZkaMn3eE2txCWNbEkblXqWRff5uSDOE5CCBmGjkZ8mfS9lRXy+PHh/ZNpFa/HDwohpJmGrOsulttfdujKnwGKoD22II4/VENwDHMwNIFhlqHlG6VLEzd//Mn7lmQFXT7exnX3RzmeXriz7vM7X339DE8TWl13QU9xr7HbvNtUqjTGMqxAMDTjcdAOHiHUUol4oLembm+npqZuVKuVRKKzp6e/p6dXVdsHBobm5m6vF1OEg65m85zLwXEOaI9v5u+kCrNBozvs7msx4Ti2M+5cXJjUdTQ2dgTDMdOyMICAZeIkDR6Dahgrud3hUJTCCQyCpirrhu4QXD+/vzAMbxWBx8GSRLvHLdDkXA5B5erZfvvIhXP+gEsSlb/6Px/XJfXNrx3jodXIFCzdwE3IEA63L9TUqjjHECzv4AMAe0gH/Nvf/n2EkGEY5XJ5YWF2YuIqwzADA0dOnTobDLZhGFYo5G7fnqpUK2PjpxiMrJVqBCNwHO93tDu5NggARXCtzwdOkHZ3G0mgjeQyzdkZnss1pKbabOzdaxQ2BG/8UTsh0A0zU61opmGj6EJ1b2M36bJ5CJx4vCn5LFiWJdWk1GoKAcQLPELIMk2pVGZ5nsAwnqZ7/Y7OBDvaa+se7nf53DtbhZ++NRlOeAWBBqWaheOSjpwhd9PQPb6Q4PAasIlhGMc44ad44CkAgKZpmcz222//qFwutrWFnnjifEdHJ8tyJEkihCYmriiKHApHRo6OlndLu7sqb2dZjiRwiiJYhIAoirIiEwRBkrRgcxjN8s5OiaC4BjBndjPZhlIoZWlHG47h1IHvNwSAhCBbqdRV1cawLt6xV9m9uXQ17I9xDA8OpCT47ChTVXX66u1L71zuGehyepwIoWa9vrOaJGmaYhgcwxiKCrhtBGYRNCsp4Pvf+2hnu/Tf/vgboyd7t2tNkyJVC+RLkuAQdKUJTczri7CU/XFxWEsJhKz5+ZlCIZ/P52W5ruuaLMu6rhME0SpYuq5NT99EOAzE2xRRmr25bZkWhJDASQigKIl3V5Zm5mbqdclEWKRzKNERL+SKDhMd8fsD3nDDFvtwYeri6nJLKkLINI1auZRPp9hy2crnphfnVaV5su/sV577htfh31/WVORiYU9RlM+KKVM31+6u6ZrG8AxCCCFUlxrVan3hk2sQwyCEEMMom8eeOIrz3nt3MzOTyXNPDwZDbl5gxkbiPq890R5we+3Jtfz83Ga1ImIQO7Rrvx9TCKG9vd2lpfmNjTUAoCw3RLFWq1Uty8IwrF6XpqdvVqvV8fFTHd2dDgdZ3c0tLzd03RIEkqSwRqMxfXvqzvxtmqYVRSlWq4ralCRpM7kWcqChzqGEwNRv/YVSkyTO11DVpqaJldLi1PXZmxP35m5lVlfSS/PlUiEUibEcv3+eiiK/9YM/u/rxez29Q3a783HtEUJyQ564eN3td4+dGyVIolapzdycl2VVrxVZQbB7PC1uCCFFVv/Xd99Lred+7z+/4fbYTN3Izm0YdsXhtvk8bp/fqRowtV2haBICwLCPXjmIslzGMRwCePz4eKVSdbk8a8mV27cmFxbm/P5gOByJRGIEQQqCTRSlO3emRkfHHT53/xhYmq/OTO0V9+Rzz8VdThdJkpnd7Z9+8K7d5tQNjSYpnrPrTUOXM95AQrD7h899df7y97dWp+XEsKE2CytLyauXLMMMJxIkRSupzY9//Lfz87P/5Y/+mCRJCCFCCFnW0vwdjuNY9vC2w7Ksaqlaq4h9R3pYnpUbyqV3rixML37xV162sRExX1hrNOIDAyRNWxba2SpNXV8ZGI7F2v0AAIBANZMTMa2slx2cqzc8OH6iW5KUq1eWwmEPQRSHRxIPxdQ3f/NbsiZn69mQO5yItff1DUSCQWiKTpdf041cLru5ub63tyNJkiTVFEUZGDhCUqTN5Yx3eRNdLkXWq6Wm08Pu7u5s7aS3ttM4jtltNoZmq2JFqtdSmZoDpRP9Z0hGyC29Txigd/hJrS5NfvieXqudf/HVF9/45fEnLwyfOJNZX89sJFWG7evphxBalrWbSV26+E7/4NHxk09oqqrIDQQAhNh+vbcsK3l3ffLSZLynvUbVkpNrH//k8ktffSY6mAgGwyTHbi/dpVhGcDoN03rnRzemrq18/Tde6OmPYhisV9XyRj6UiFJ2tiZXJlev9kaGMBz19kTqDdWykMdj2xeEEML/4Dv/lad4xVDy9bwg2KLBWCyegIbU1dVz5OhJt9tjmmYqtbm7mzFNs1qt6Lqmqk2eF+x2B80Qgp1av1fGCVivFFLbm01ViYVjZ06dO350zOvxSnVxZX0hVwZhe6PZqNIkbTQag8efgU1ldfpmrKPr/Euv2p1OAABFMw6na+rSRZm0RTq73TYBIbSyNHv1458+cf7zAMKP3n97+uZVVVUZhuV4oWWDZVnzk/N3JmbtHpepaz/+8787+9qp/hPcVkFK7iV53mFUJEWqU7w3vyP/z+++WxfV119/Lpdu3p0sZJISodd9be5QPG7nnCFP9M8ufdfBOS1kxkJhl0sgCOxgXce/8x//E4ETbtatGupKYSXsCDM0C6SKWs12DY729A0ODQ2PjZ10OFyrqyvNplqtltPplCRJHR1dHMdTNEEzxE5aFIul1Oo9i7ZGjow889TzbYG2eCzR2dG1unYvndkGOtbdGad4tyyVw32nLNPAMayjfyjW2d3SxrLM9eWl+anr3/z133p/YbUrHGQpaurGx9eufhAIht97929X7i7cW5mbmb4u2By9/Uda7zzIQjc+vrm3nQtGglfevvr8a884B1mSzLhtQwiheCDuC0WuvJXOrGPLd/Y++OhaNBo8OTpCs2Qgxsd6bFCTAbBcUT9DMRzNn+g6s7q7PL060RcZZBn2kc/f/eiCEMZd8fMd529s37y8My96QhwAldQcR8Genr7h4WNf/vJX+/sHcBzDMFxVmxMTV1KpjWazCSEMtAleP1eTCbvfYTZNH+alTQrDMAihx+V57cUvGqaaLsrB+EhDrnGeNkNXSaNx8uzpodET9+sRQg1JWp69zbBc18Dgl58+M7uWkmR5O72JQWx+duq1N77+P7731m//hz8kSer25OVW94AQsiyrUqwiYN2ZuKU21Ww61273u4RIezBxsu+UnbezNuFzv3ru1X/TGx4GAKFj4x3xAXvvcXf7gNMXEZxRN8nSWzeXdUXDIIZheMybIElqI7e6mVs76Cb4yOcQAjgSGMYtbVGrgL7jSGlszU8AgGw2WywWHx8/TZIUQRDf/Oa3Llx4XlWbqqq0tsU7nUPHorzHpuqqmpTX/nox89EGhBDH8Z7uPrfLo1sNjGRjvWfsvkglvwkgJqYWkWW13KSp6syNa0uzt578wiskSQZdLoYi5zfSxcIezTBf/9f//snzLzAMO3x03O507WS2JLHaUlisirVyrSHJ5198qqO3Y3VhdeLiVVnSNF3ct9Ab5iAOkys7GAY7+wI2N0WzRCtePF0hR9RbWssqZalFifk6Xhl/3bKsndLW0tZspV5+NKb2+TpZ51jbEbchJ0ldjPXli9l6uYAQwnF8cHCYIIh8fi8ajb/00qs9Pf0Mw7V2ESQeTXhIkjSBGbnQ7jseRIbVanAJgvB5/ZqmVmtV3u5Dmq41RM4Xre/cAwAhhJqKsnB78r0f/aXHF3jhF99sMTx3pL9Wyic31594+vMnz1y4/8Ij2HAMC4aiyLrfkRb2CmJFPPPMyVe+8uKLb7wg2IW1WWluerZRl/bvm602W1X14ye6u/siJEU8CBMMo20cbecaxdo+xc45u0P97f6uRrMxuXpV1ZumZT7qqdZqjmS7VUGbX1xCykZbdHn+mlLNAwB6enp5XlCUZrGYj0RigUCQoh40HTRNEzhhGAbkcM/RYOBkpEXXdZ2maZpmWt2jUiuyvAsAwHijSjkr1aozNz754fe+y7L8N373Dzhe2GfIo6au1M899cJ+py6JNVVtdnX3CzbHp54qilXpyPiQ3WXvGe4eHj+Sy+SXrmd3N6qmaR6068Lnjv7677zc0x8hyQOXBAhxAuc89ka+1kpnXTfKBalR0indHmTjR+Onfjz5N3fWJhVVPuQlDwAQbe+VC8XF/LYocMndXfr9vxx5498Fg6Gnn372ypVLW1vp/RPY30ISJIZhFrJy+T38KIFTRCuzZEXWVFUQbCRJAgBkscQ5fQghR/vRjcmL2zL98Ttv2Sj+V37z91ia3b+4AwDyO1tirTy/ne0RJbfdhhBaXVmoVkqjJ84x7P0ZRylX0lTN4XaUsxuVfGbweHxjxduQS1pTBwAoTalQkSMBv240uwbsNCUw9IPhiGWZrdu14HdkJleVisQ4hWpBWlvKmqalqUZdVEzdkFXnJHm3frxxuKc4t7tn7Ix8+0pmLYU4PZ/Lf5hejbp8L7/8xZ7uPoom989kfwuO338FnVuYefb8861wsyyrVC6JdbG7o4dhWABAYuTpnZWpxNFnMunNG5MzGzv5eEfvE8NP1Tdz9WxZOGsnKKrl4nRqrau73+/yLKUyJwe6LUO7/NG7HC8cHz+7L7RSrAp2nuVZm7stl7qLadLR0bBGmb0jPUsr70Ecm17MJcKDFJmhSBT0dTTkslTPS42CoornRr+m6rJlmS5/FCNxMVthnILTZ/OHFVXRcQJDCFimqSiBerX97uL0IZ5qZbbg8/rbB/LJba5OlKJeffFavnvUXRWfOnaKDXoO3dVKk/XU+tLyYldnN0kQkiSt3Fuq1SrDQyNOhxMAwDv9mzMfpddWr1y6vLm1M3ruwgtv/FJjp9DYLjUJbGP2bvf4CADAsoxiMUfSzNGu9nwTXZy8hVczs3du/KtvfacVCAghy7QCYf8v/PIrkUSEYrj+U1+AGB7bWd9eu17ZWSluLofiI0e6AzghTC1IfZ3te/mS28XFQkcF3sux7vnldxVVDHi6/O7OyHgPwZAQQpIkOgdCLf6mYVmWheEYjmOeO/aHXocfAeLZNI/3hjpqpQou73ZRtobgLmym4pEoxT0647Ms6/bsrc30RlswtJfbw3BYE2sLSws3b12PReLPXficTbADAABClUrt6sUPNpaXRseOP/Hs86JeL8iZ2OARu9cr5ksQg6yN31y/995Pfri3u22aFo1bt65/+P47P/j8S7/40itv7k/MNK2BQOnI+Ele4Fo3YQgha3P5Y0OF7eVwbMRSddSob4hiUVGyOyUD2Gibuy8+SFEcACDg7Q75++32II6TjJ2jbSw48MYCIcRwDCfwVoVxe22HZ18LboYf6xzI1quJSmcy2zAEONTeNdNsbs8s9Jw/iz88/zBMwzAMnuNPjZ5ObqxeuvwhRZLlaoVh6F948Ut+b6AVdBZCiwv35qdu2J0u1uGZ+ODvMnKpWi0kAre7Bgf7B8cm/ubvn/m119Oba9Vy8fyFF+fmJn/y9l+1d/Z+7eu/9fwXXiMffENQvZ6lOJnlyINFAEKI40TP2OcQQvVqoV7NuxlHGJvaLam6hd29sp3e2Ss1a0PxzieHjuM4gRDSG6K8lwEYZD1B2uE+NF1IioAHZ8iPw0TWQmFX1JU+jN6xCm7ej0y2Ob/sCPrb+nsfRB9C9Ub9T//3n6yu3fu3v/YtmmbmF+dqYpVl2HOnn4jH2lvyLMvKpNb/9L//oVSrUjSD4ziAEFnINA3TMo48O0K58PP9vyQWKzUkitXKsbHTCKFSqRCNJnjBti9Ls9RNMalLRVwshyMnHM7oocojhExDx3DCNHQAgFTRtu7lk5vb/oDr5IU+hqLvcxOr+dtXdbFMewNtp57DCPJQbp8ZUwihpqEyBH3EG5ov7qRMo90Z2yiuHfMOoxOjn/zJnwd6urADo+Om2tR1TeAFjuPi0UTQH4QYJvDCwfEyhNDp9r7wpTfVpmKaBgCQpGiW52x2p412BLvjGMRSi/csCPLBwMunn2rt8vmDjyiWr5aWs8nBYE8jv4GQ9VkmQAgJkkIIkRSNEHL5KbubU0VDLjdp8kF/QzAcyfNqKavkd5RClm+L/QM9BZCiNymcwiDscHgXijsNAzhw58aVT7xdneNf+dLU939w6lfffOBWRdF1w26zEyS5sZeOeEM8e//d8mDy252uM8++8Ijllmpu/3AVRSzMRsYHe9fmllxrORTvvX/XARZCCIM4AMA0NIgRlgLD8iDfdBTqNYoSwM9ES/qnf4ErKGzdLVRzdVfQ1qJDAmc8ofrWGkRArRQ+y1M/+7n60/kKQABAHSE7bk9P3Fj78BLvdnm72tO3ZvatBQA47A6fz8cxvMfuXkqvWMis6mXJEP+fs2VIQM/pUH2jBgDAcCza3WHDyMx6CiFkIn2zNLlTm9dNRdfVWiGDYVib3+dx2UsFsVLh0pvXLcv82fwPes0TttEsUdgSDxgJMZJs/Rt89qTj/wJ97I+QnP5DTQAAAABJRU5ErkJggg==";//把字符串转换成ByteArray,Base64下载地址http://www.sociodox.com/base64.htmlvar captchBa:ByteArray = Base64.decode(captchaStr);//把loader定义为局部变量,确保加载完成后及时释放内存,放置内存泄露var loader:Loader = new Loader();loader.contentLoaderInfo.addEventListener(Event.COMPLETE,loadedHandler);//通常这里是从远程加载一个二进制数据流,但为了简化代码,这里用captchaBa做为Mockup Dataloader.loadBytes(captchBa,captchaLc);}private function loadedHandler(e:Event):void{e.target.removeEventListener(Event.COMPLETE,loadedHandler);//取出loader里面的内容,Loader类会自动进行解码所以占用一些内存,URLLoader则不会var captchaBmp:Bitmap = e.target.content as Bitmap;captchaBmp != null ? addChild(captchaBmp) : trace("Error: the format of captcha is wrong!");e.target.loader.unloadAndStop();//卸载loader,垃圾回收}}}
天地会上有一篇和他相近的文章http://bbs.9ria.com/forum.php?mod=viewthread&tid=82069

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