AIR 2.0 一个非常重要的更新是支持了对Socket的监听，包括TCP (ServerSocket)以及UDP(DatagramSocket)。另外也支持了以UDP方式对外发送信息。这两个功能的增加无疑大大的增加了AIR的应用范围，比如………..这一下想个具体的还是比较困难，比如协作型的应用程序。
这篇教程将使用ServerSocket功能做一个HTML服务器，这个不是我原创的，是看到一个老外写的，觉得很有意思，是一个ServerSocket的好例子，原文在 http://coenraets.org/blog/2009/12/air-2-0-web-server-using-the-new-server-socket-api/. 原文是Flash Builder 4 版本的，这里我给大家的是Flex 3版本, 使用源代码请先下载AIR 2.0 SDK
Demo过程
- 下载安装 AIR 2.0 beta runtime.
- 下载MiniAIRWebServer.air
- 安装运行 MiniAIRWebServer.air.
- 运行 http://localhost:8765/HelloWorld.html （端口以你在运行MiniAIRWebServer.air后输入的为准, 注意安装MiniAIRWebServer.air后安装文件夹下的webroot/HelloWorld.html, 我们运行的就是这个文件）
运行效果如下:
源代码
<?xml version="1.0" encoding="utf-8"?> <mx:WindowedApplication xmlns:mx="http://www.adobe.com/2006/mxml" layout="vertical" close="closeHandler()" creationComplete="init()"> <mx:Script> <![CDATA[ import flash.events.Event; import flash.events.ProgressEvent; import flash.events.ServerSocketConnectEvent; import flash.net.ServerSocket; import flash.net.Socket; import flash.utils.ByteArray; import mx.controls.Alert; //ServerSocket，用于监听TCP下的链接 private var serverSocket:ServerSocket; private var mimeTypes:Object = new Object(); private function init():void { // 支持的类型 mimeTypes[".css"] = "text/css"; mimeTypes[".gif"] = "image/gif"; mimeTypes[".htm"] = "text/html"; mimeTypes[".html"] = "text/html"; mimeTypes[".ico"] = "image/x-icon"; mimeTypes[".jpg"] = "image/jpeg"; mimeTypes[".js"] = "application/x-javascript"; mimeTypes[".png"] = "image/png"; // 初始化服务器文件夹 var webroot:File = File.applicationStorageDirectory.resolvePath("webroot"); if (!webroot.exists) { File.applicationDirectory.resolvePath("webroot").copyTo(webroot); } } private function listen():void { try { serverSocket = new ServerSocket(); //监听链接 serverSocket.addEventListener(Event.CONNECT, socketConnectHandler); //绑定端口 serverSocket.bind(Number(port.text)); //开始 serverSocket.listen(); log.text += "正在监听 " + port.text + "端口...\n"; } catch (error:Error) { Alert.show("端口 " + port.text + " 也许正在被使用，请尝试另一个端口.\n(" + error.message +")", "错误"); } } private function socketConnectHandler(event:ServerSocketConnectEvent):void { var socket:Socket = event.socket; //监听数据 socket.addEventListener(ProgressEvent.SOCKET_DATA, socketDataHandler); } private function socketDataHandler(event:ProgressEvent):void { try { var socket:Socket = event.target as Socket; var bytes:ByteArray = new ByteArray(); socket.readBytes(bytes); var request:String = "" + bytes; log.text += request; var filePath:String = request.substring(4, request.indexOf("HTTP/") - 1); var file:File = File.applicationStorageDirectory.resolvePath("webroot" + filePath); if (file.exists && !file.isDirectory) { var stream:FileStream = new FileStream(); stream.open( file, FileMode.READ ); var content:ByteArray = new ByteArray(); stream.readBytes(content); stream.close(); socket.writeUTFBytes("HTTP/1.1 200 OK\n"); socket.writeUTFBytes("Content-Type: " + getMimeType(filePath) + "\n\n"); socket.writeBytes(content); } else { socket.writeUTFBytes("HTTP/1.1 404 Not Found\n"); socket.writeUTFBytes("Content-Type: text/html\n\n"); socket.writeUTFBytes("<html><body><h2>Page Not Found</h2></body></html>"); } socket.flush(); socket.close(); } catch (error:Error) { Alert.show(error.message, "错误"); } } private function getMimeType(path:String):String { var mimeType:String; var index:int = path.lastIndexOf("."); if (index > -1) { mimeType = mimeTypes[path.substring(index)]; } return mimeType == null ? "text/html" : mimeType; } private function closeHandler():void{ if(serverSocket){ serverSocket.close() } } ]]> </mx:Script> <mx:HBox verticalAlign="middle"> <mx:Label text="Port:"/> <mx:TextInput id="port" text="8765" width="50"/> <mx:Button label="Listen" click="listen()"/> </mx:HBox> <mx:TextArea id="log" width="100%" height="100%" /> </mx:WindowedApplication> |
下载:
MIniAIRWebServer.air (99) MIniAIRWebServer.zip (100)
支持！
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Kevin Luo Reply:
January 11th, 2010 at 4:40 PM
谢谢支持
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原来是底层开发 大侠！呵呵！
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Kevin Reply:
January 13th, 2010 at 6:07 PM
不敢称大侠，不敢～
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joyla Reply:
January 13th, 2010 at 6:50 PM
末那么谦虚哈！呵呵
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