这里的三种方式分别为:
1、二进制传输(BINARY)
2、字符串传输(String)
3、文件流上传(File)
开发IDE:FlashDevelop、Zend Studio。
1)设置FlashDevelop使用flash player10(debug版本,因为有一个demo使用了本地预览)
“工具”菜单 –》 “软件设置”(快捷键F10)—》 点击左侧的“AS3Context”,在Language中的“Default Flash Version”修改为10,选择Player Debug 的路径
2、因为在flashDevelop中使用到了fl组件,所以需要先下载fl.swc,可以在google code上下载的到, (关于在flashdevelop中如何使用swc,可以gg一下)
3、使用到了Adobe的官方组件PNGEncoder,
4、使用到了as3的base64Encode,
一、使用二进制上传图片
完整的as3代码:
package { import com.adobe.images.JPGEncoder; import com.adobe.images.PNGEncoder; import flash.display.Bitmap; import flash.display.BitmapData; import flash.display.Loader; import flash.display.MovieClip; import flash.display.Shape; import flash.display.Sprite; import flash.events.Event; import fl.controls.Button; import flash.events.MouseEvent; import flash.filters.GlowFilter; import flash.net.*; import flash.filters.BitmapFilterQuality; import flash.utils.ByteArray; /** * ... * @author ZhangYi */ public class Main extends Sprite { private var _base:Shape; private var _btn:Button; private var _loader:Loader; public function Main():void { if (stage) init(); else addEventListener(Event.ADDED_TO_STAGE, init); } private function init(e:Event = null):void { removeEventListener(Event.ADDED_TO_STAGE, init); // entry point inited(); } private function inited():void { var mc:MovieClip = new MovieClip(); mc.graphics.beginFill(0x000000, 0.2); mc.graphics.drawRect(0, 0, 320, 455); mc.x = 30; mc.y = 60; addChild(mc); _loader = new Loader(); _loader.load(new URLRequest("../assets/1.png")); mc.addChild(_loader); _loader.addEventListener(MouseEvent.ROLL_OVER, addFilterHandler); _loader.addEventListener(MouseEvent.ROLL_OUT, removeFilterHandler); _btn = new Button(); _btn.label = "截图"; _btn.x = 30; _btn.y = 30; addChild(_btn); _btn.addEventListener(MouseEvent.CLICK, clickHandler); } private function clickHandler(evt:MouseEvent):void { var bitmapData:BitmapData = new BitmapData(_loader.width, _loader.height, true, 0); bitmapData.draw(_loader); //var encoder:JPGEncoder = new JPGEncoder(100); //var bytes:ByteArray = encoder.encode(bitmapData); var bytes:ByteArray = PNGEncoder.encode(bitmapData); var req:URLRequest = new URLRequest("http://meteoric.com/test/uploadFile/upload_1.php"); req.data = bytes; req.method = URLRequestMethod.POST; req.contentType = "application/octet-stream"; var loader:URLLoader = new URLLoader(); loader.dataFormat = URLLoaderDataFormat.BINARY; loader.load(req); loader.addEventListener(Event.COMPLETE, completeHandler); } private function completeHandler(evt:Event):void { trace(evt.target.data); } private function addFilterHandler(evt:MouseEvent):void { var filtersArr:Array = new Array(); filtersArr = _loader.filters; filtersArr.push(getBitmapFilter()); _loader.filters = filtersArr; } private function removeFilterHandler(evt:MouseEvent):void { _loader.filters = null; } private function getBitmapFilter():GlowFilter { var color:Number = 0xFF0000; var alpha:Number = 1; var blurX:Number = 5; var blurY:Number = 5; var strength:Number = 4; var inner:Boolean = false; var knockout:Boolean = false; var quality:Number = BitmapFilterQuality.LOW; return new GlowFilter(color, alpha, blurX, blurY, strength, quality, inner, knockout); } } }
后台php的代码:
运行后,可以在相应的目录中看到图片已经上传成功了,如下图所示:
以下说明转载至
PHP默认只识别application/x-www.form-urlencoded标准的数据类型。
因此,对型如text/xml 或者 soap 或者 application/octet-stream 之类的内容无法解析,如果用$_POST数组来接收就会失败!
故保留原型,交给$GLOBALS['HTTP_RAW_POST_DATA'] 来接收。另外还有一项 php://input 也可以实现此这个功能
php://input 允许读取 POST 的原始数据。和 $HTTP_RAW_POST_DATA 比起来,它给内存带来的压力较小,并且不需要任何特殊的 php.ini 设置。php://input和 $HTTP_RAW_POST_DATA 不能用于 enctype=”multipart/form-data”。’
而在前台则使用JPGEncoder或是PNGEncoder将BitmapData转成二进制,使用post传给php
二、使用字符串提交(采用Base64编码)
as3代码:
package { import com.adobe.images.JPGEncoder; import com.adobe.images.PNGEncoder; import com.hurlant.util.Base64; import flash.display.Bitmap; import flash.display.BitmapData; import flash.display.Loader; import flash.display.MovieClip; import flash.display.Shape; import flash.display.Sprite; import flash.events.Event; import fl.controls.Button; import flash.events.MouseEvent; import flash.filters.GlowFilter; import flash.net.*; import flash.filters.BitmapFilterQuality; import flash.utils.ByteArray; /** * ... * @author ZhangYi */ public class Base64Test extends Sprite { private var _base:Shape; private var _btn:Button; private var _loader:Loader; public function Base64Test() { if (stage) init(); else addEventListener(Event.ADDED_TO_STAGE, init); } private function init(e:Event = null):void { removeEventListener(Event.ADDED_TO_STAGE, init); // entry point inited(); } private function inited():void { var mc:MovieClip = new MovieClip(); mc.graphics.beginFill(0x000000, 0.2); mc.graphics.drawRect(0, 0, 320, 455); mc.x = 30; mc.y = 60; addChild(mc); _loader = new Loader(); _loader.load(new URLRequest("../assets/1.png")); mc.addChild(_loader); _loader.addEventListener(MouseEvent.ROLL_OVER, addFilterHandler); _loader.addEventListener(MouseEvent.ROLL_OUT, removeFilterHandler); _btn = new Button(); _btn.label = "截图"; _btn.x = 30; _btn.y = 30; addChild(_btn); _btn.addEventListener(MouseEvent.CLICK, clickHandler); } private function clickHandler(evt:MouseEvent):void { addFilterHandler(); var bitmapData:BitmapData = new BitmapData(_loader.width, _loader.height, true, 0); bitmapData.draw(_loader); var bytes:ByteArray = PNGEncoder.encode(bitmapData); var pngString:String = Base64.encodeByteArray(bytes); var variables:URLVariables = new URLVariables(); variables.png = pngString; variables.name = "photo002"; var req:URLRequest = new URLRequest("http://meteoric.com/test/uploadFile/upload_2.php"); req.data = variables; req.method = URLRequestMethod.POST; var urlloader:URLLoader = new URLLoader(); urlloader.dataFormat = URLLoaderDataFormat.VARIABLES; urlloader.addEventListener(Event.COMPLETE, completeHandler); urlloader.load(req); trace(pngString); } private function completeHandler(evt:Event):void { trace(evt.target.data); } private function addFilterHandler(evt:MouseEvent=null):void { var filtersArr:Array = new Array(); filtersArr = _loader.filters; filtersArr.push(getBitmapFilter()); _loader.filters = filtersArr; } private function removeFilterHandler(evt:MouseEvent):void { _loader.filters = null; } private function getBitmapFilter():GlowFilter { var color:Number = 0xFF0000; var alpha:Number = 1; var blurX:Number = 5; var blurY:Number = 5; var strength:Number = 4; var inner:Boolean = false; var knockout:Boolean = false; var quality:Number = BitmapFilterQuality.LOW; return new GlowFilter(color, alpha, blurX, blurY, strength, quality, inner, knockout); } } }
后台php代码:
控制台上可以看到将bitmapdata转为字符串的结果:
后台保存得到的图片:
三、使用FileReference类进行上传
as3代码:
package { import fl.controls.Button; import flash.display.Loader; import flash.display.Sprite; import flash.events.DataEvent; import flash.events.Event; import flash.events.MouseEvent; import flash.filters.BevelFilter; import flash.net.FileFilter; import flash.net.FileReference; import flash.net.URLRequest; import flash.utils.ByteArray; /** * ... * @author ZhangYi */ public class FileReferenceUpload extends Sprite { private var _btn:Button; private var _fileRef:FileReference; private var _loader:Loader; public function FileReferenceUpload() { if (stage) init(); else addEventListener(Event.ADDED_TO_STAGE, init); } private function init(e:Event = null):void { removeEventListener(Event.ADDED_TO_STAGE, init); // entry point inited(); } private function inited():void { _btn = new Button(); _btn.label = "选择图片"; _btn.x = 100; _btn.y = 100; addChild(_btn); _btn.addEventListener(MouseEvent.CLICK, clickHandler); _loader = new Loader(); _loader.x = 100; _loader.y = 150; addChild(_loader); _loader.contentLoaderInfo.addEventListener(Event.COMPLETE, resizeImage); } private function resizeImage(evt:Event):void { var size:uint = 300; var w:Number = _loader.width; var h:Number = _loader.height; var scale:Number = w / h; if (w > h) { _loader.width = size; _loader.height = size / scale; } else if (h > w) { _loader.height = size; _loader.width = size * scale; } else { _loader.height = _loader.width = size; } var req:URLRequest = new URLRequest("http://meteoric.com/test/uploadFile/upload_3.php"); _fileRef.upload(req); } private function getImageFilter():FileFilter { return new FileFilter("支持的图片类型(*.jpg;*.jpeg;*.gif;*.png)", "*.jpg;*.jpeg;*.gif;*.png"); } private function getFilterTypes():Array { return [ getImageFilter(), new FileFilter("GIF 文件 (*.gif)", "*.gif"), new FileFilter("PNG 文件 (*.png)", "*.png"), new FileFilter("JPG 文件 (*.jpg)", "*.jpg;*.jpeg") ]; } private function clickHandler(evt:MouseEvent):void { _fileRef = null; _fileRef = new FileReference(); _fileRef.addEventListener(Event.SELECT, selectHandler, false, 0, true); _fileRef.addEventListener(Event.COMPLETE, onloadedHandler, false, 0, true); _fileRef.addEventListener(DataEvent.UPLOAD_COMPLETE_DATA, uploadImageCompleteHandler, false, 0, true); _fileRef.browse(getFilterTypes()); } private function selectHandler(evt:Event):void { _fileRef.removeEventListener(Event.SELECT, selectHandler); _fileRef.load(); } private function onloadedHandler(evt:Event):void { _fileRef.removeEventListener(Event.COMPLETE, onloadedHandler); _loader.loadBytes(_fileRef.data); } private function uploadImageCompleteHandler(evt:DataEvent):void { trace(evt.data); _fileRef.removeEventListener(DataEvent.UPLOAD_COMPLETE_DATA, uploadImageCompleteHandler); _fileRef = null; } } }
后台php代码:
0) { exit("Error: " . $_FILES ["Filedata"]["error"]); } $fileName = iconv("utf-8","gb2312", $_FILES ["Filedata"]["name"]); $reallyName = "image/".$fileName; if (file_exists ($reallyName)) { unlink($reallyName); } if (!is_dir("upload")) { mkdir("upload"); } move_uploaded_file( $_FILES ["Filedata"]["tmp_name"], $reallyName); echo "Stored in: " . "image/" . $fileName; ?>
以上三种方式,在不同的场景下面可能应用不太一样,比如第二种,使用编码后的字符串方式进行传输的,这样就可以通过socket通道传输数据了(虽然这很浪费而且耗费带宽,环境允许的话还是应该优先考虑使用web接口进行处理)。针对不同的上传方式,后台处理各不一样,可以看到上面的三个php写的都不一样。
在Flex中,可以使用内置的一些类、方法将bitmapdata转化为字符串,在线例子:
用到的类也比较简单(ImageSnapshot中的encodeImageAsBase64、captureImage):
private function getBase64StringFromBody():String { var _matrix:Matrix = new Matrix(1,0,0,1,0,0); _matrix.scale(1,1); var bitmapData:BitmapData = new BitmapData(320,455,true,0); bitmapData.draw(photoEditContainer, _matrix); var bt:Bitmap = new Bitmap(bitmapData,"auto",true); var tempCan:Canvas = new Canvas(); tempCan.rawChildren.addChild(bt); _matrix = new Matrix(1,0,0,1,0,0); bitmapData = new BitmapData(320,455,true,0); bitmapData.draw(tempCan,_matrix); var codeStr:String = ImageSnapshot.encodeImageAsBase64( ImageSnapshot.captureImage( bitmapData ) ); tempCan.rawChildren.removeChild(bt); bitmapData.dispose(); bitmapData = null return codeStr; }
提供本文中所有as3的,后台可以用自己熟悉的任何一门语言写写就好:java、.net、python或是其它…