[ActionScript 3.0] AS向php发送二进制数据方法之——在URLRequest中构造HTTP协议发送数据

主类 HTTPSendPHP.as

package 
{
    import com.JPEGEncoder.JPGEncoder;
    import com.fylib.httpRequest.HttpRequestBuilder;
    import com.fylib.httpRequest.HttpRequestBuilderConsts;
    import flash.display.Bitmap;
    import flash.display.BitmapData;
    import flash.display.Loader;
    import flash.display.Sprite;
    import flash.events.Event;
    import flash.events.HTTPStatusEvent;
    import flash.net.URLLoader;
    import flash.net.URLRequest;
    import flash.utils.ByteArray;

    /**
      * ...
      * @author Frost.Yen
      */
    public class HTTPSendPHP extends Sprite
    {
        private var bmp:Bitmap;
        public function HTTPSendPHP()
        {
            var ldr:Loader = new Loader  ;
            ldr.load(new URLRequest("image.jpg"));
            //加载的图片;
            ldr.contentLoaderInfo.addEventListener(Event.COMPLETE,onComplete);
        }

        private function onComplete(e:Event):void
        {
            var bmpd:BitmapData = e.target.content as Bitmap.bitmapData;
            var jpgEncoder:JPGEncoder = new JPGEncoder(80);//图片质量
            var jpgStream:ByteArray = jpgEncoder.encode(bmpd);//将图片数据转换成ByteArray存储

            var HttpR:HttpRequestBuilder = new HttpRequestBuilder("php端地址");//php端地址
            HttpR.writeImage("图片变量","图片名称",HttpRequestBuilderConsts.JPG,jpgStream);
            //图片变量如："data[Image][name]";
            HttpR.writeHttpEnd();
            HttpR.writeSeparator();

            var loader:URLLoader = new URLLoader  ;
            var request:URLRequest = HttpR.getURLrequest();
            loader.load(request);
            loader.addEventListener(HTTPStatusEvent.HTTP_STATUS,httpStatusHandler);
            loader.addEventListener(Event.COMPLETE,onSendComplete);
        }

        private function onSendComplete(e:Event):void
        {
            trace("complete");
        }

        private function httpStatusHandler(e:HTTPStatusEvent):void
        {
            trace(("status is " + e.status));
        }
    }

}

其他类

package com.fylib.httpRequest
{
    import flash.net.URLRequest;
    import flash.net.URLRequestMethod;
    import flash.net.URLVariables;
    import flash.utils.ByteArray;

    /**
      * ...
      * @author 
      */
    public class HttpRequestBuilder
    {
        /**
          * 构造的URLRequest
          */
        private var _request:URLRequest;
        /**
          * 构造的二进制ByteArray
          */
        private var _byteArray:ByteArray;
        /**
          * Http协议分割符
          */
        private var _separator:String;
        /**
          * 标志位  是否填写HTTP文件尾
          */
        private var PROTOCAL_END_SET:Boolean = false;

        public function HttpRequestBuilder($url:String,$separator:String="7d86d710144a")
        {
            //初始化
            this._separator = $separator;
            this._request = new URLRequest($url);
            this._request.method = URLRequestMethod.POST;
            this._request.contentType = "multipart/form-data; boundary=---------------------------" + this._separator;
            this._byteArray = new ByteArray  ;
        }

        /*
         * 写入变量
         * @param $name 写入的变量名
         * @param $value 写入的变量值
         */
        public function writeVariable($name:String,$value:String):void
        {
            writeSeparator();
            _byteArray.writeUTFBytes(((("Content-Disposition: form-data; name="" + $name) + ""

") + $value));
        }

        /*
         * 写入图片
         * @param $name 变量名
         * @param $filename 图片文件名
         * @param $type 图片类型，在HttpRequestBuilderConsts下定义
         * @param $content 图片二进制数据
         */
        public function writeImage($name:String,$filename:String,$type:String,$content:ByteArray):void
        {
            writeSeparator();
            _byteArray.writeUTFBytes((((((("Content-Disposition: form-data; name="" + $name) + ""; filename="") + $filename) + ""
Content-Type: ") + $type) + "

"));
            _byteArray.writeBytes($content);
        }

        /*
         * 构造HTTP分割线
         */
        public function writeSeparator():void
        {
            _byteArray.writeUTFBytes((("
-----------------------------" + separator) + "
"));
        }

        /*
         * 构造HTTP结尾,只能调用一次，二次调用会抛出错误
         */
        public function writeHttpEnd():void
        {
            if (! PROTOCAL_END_SET)
            {
                _byteArray.writeUTFBytes((("
-----------------------------" + separator) + "--"));
                PROTOCAL_END_SET = true;
            }
            else
            {
                throw new Error("Write the Http End More Than Once");
            }
        }

        /*
         * 获取构造好的URLRequest
         */
        public function getURLrequest():URLRequest
        {
            return this.request;
        }

        //get set
        public function get separator():String
        {
            return _separator;
        }
        /*public function set separator(value:String):void
          {
           //TODO 替换之前写入的内容
           _separator = value;
          }*/

        /*
         * 获取前会检查是否写入HTTP结尾，未调用的话会报错
         */
        public function get request():URLRequest
        {
            if (! PROTOCAL_END_SET)
            {
                throw new Error("Havn't Write the Http End Yet");
            }//??还是应该自动构造
            _request.data = _byteArray;
            return _request;
        }
    }

}

package com.fylib.httpRequest
{
    /**
      * ...
      * @author 
      */
    public class HttpRequestBuilderConsts
    {
        public static const JPG:String = "image/jpeg";
        public static const PNG:String = "image/x-png";

        public function HttpRequestBuilderConsts()
        {

        }

    }

}