[AS3]AMF3+JAVA的调用范例

0

本文作者:dmh2002 发布于:2008-9-11 分类:AS3 经验/技巧/游戏点击:

[AS3]AMF3+JAVA的调用范例

amf是Adobe独家开发的数据封装格式，Flash可以直接访问，由于它是基于二进制的数据传输，所以相对于xml SOAP、json、webService等基于字符串的数据格式，有数据体积小和效率高的特点。

amf目前有AMF0和AMF3两种格式，flash8以前版本只支持AMF0，flash9支持两种格式。AMF3比AMF0效率更高。

调试环境：
1、JDK 1.5
2、Resin 3.0
3、Flash CS3
4、flex-messaging-core.jar和flex-messaging-common.jar（这两个jar包文件可在Adobe的开源项目BlazeDS中找到）

Flash客户端代码：

view plain copy to clipboard print ?

/**
* ...
* @author Kinglong
* @version 0.1
*/
package project.test {
import flash.display.*;
import flash.events.*;
import flash.net.*;
import flash.utils.*;
public class TestAMF extends Sprite {
private var _loader:URLLoader;
public function TestAMF() {
trace("TestAMF");
_loader = new URLLoader();
_loader.dataFormat = URLLoaderDataFormat.BINARY;
_loader.addEventListener(Event.COMPLETE, loaderHandler);
_loader.addEventListener(SecurityErrorEvent.SECURITY_ERROR, loaderHandler);
_loader.addEventListener(IOErrorEvent.IO_ERROR, loaderHandler);
var request:URLRequest = new URLRequest("http://localhost:8080/ajax/servlet/test");
_loader.load(request);
}
private function loaderHandler(event:*):void {
trace(event.type);
switch(event.type) {
case Event.COMPLETE:
var start:Number=getTimer();
var byte:ByteArray = _loader.data as ByteArray;
byte.uncompress();
var obj:Object = byte.readObject();
var end:Number=getTimer();
trace("耗时：" + (end - start) + "毫秒");
trace(obj.fullName);
break;
}
}
}
}

/** * ... * @author Kinglong * @version 0.1 */  package project.test {  	import flash.display.*;     import flash.events.*; 	import flash.net.*; 	import flash.utils.*; 	 	public class TestAMF extends Sprite { 		 		private var _loader:URLLoader; 		 		public function TestAMF() { 			trace("TestAMF"); 			_loader = new URLLoader(); 			_loader.dataFormat = URLLoaderDataFormat.BINARY; 			_loader.addEventListener(Event.COMPLETE, loaderHandler); 			_loader.addEventListener(SecurityErrorEvent.SECURITY_ERROR, loaderHandler); 			_loader.addEventListener(IOErrorEvent.IO_ERROR, loaderHandler); 			var request:URLRequest = new URLRequest("http://localhost:8080/ajax/servlet/test"); 			_loader.load(request); 		} 		 		private function loaderHandler(event:*):void { 			trace(event.type); 			switch(event.type) { 				case Event.COMPLETE: 					var start:Number=getTimer();  					var byte:ByteArray = _loader.data as ByteArray; 					byte.uncompress(); 					var obj:Object = byte.readObject(); 					var end:Number=getTimer();  					trace("耗时：" + (end - start) + "毫秒"); 					trace(obj.fullName); 					break; 			} 		} 	} 	 }

Java服务端代码

view plain copy to clipboard print ?

import java.io.*;
import java.util.HashMap;
import java.util.Map;
import java.util.zip.*;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import flex.messaging.io.*;
import flex.messaging.io.amf.*;
public class TestServlet extends HttpServlet {
private static final long serialVersionUID = -1079073749217155506L;
private SerializationContext context = new SerializationContext();
public void doPost(HttpServletRequest request, HttpServletResponse response) throws
ServletException, IOException {
response.setContentType("application/x-gzip-compressed");
Amf3Output out = new Amf3Output(context);
DeflaterOutputStream stream = new DeflaterOutputStream(new DataOutputStream(response.getOutputStream()));
out.setOutputStream(stream);
Map map = new HashMap();
String[] arr = "1,2,3,4,5".split(",");
map.put("datas", arr);
map.put("userName","kinglong");
map.put("fullName", "金龙工作室");
map.put("domain", "klstudio.com");
out.writeObject(map);
stream.finish();
}
public void doGet(HttpServletRequest request, HttpServletResponse response) throws
ServletException, IOException {
doPost(request, response);
}
}

import java.io.*; import java.util.HashMap; import java.util.Map;  import java.util.zip.*;  import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse;  import flex.messaging.io.*; import flex.messaging.io.amf.*;  public class TestServlet extends HttpServlet {  	private static final long serialVersionUID = -1079073749217155506L; 	 	private SerializationContext context = new SerializationContext();    	public void doPost(HttpServletRequest request, HttpServletResponse response) throws 	ServletException, IOException { 		response.setContentType("application/x-gzip-compressed"); 		Amf3Output out = new Amf3Output(context); 		DeflaterOutputStream stream = new DeflaterOutputStream(new DataOutputStream(response.getOutputStream())); 		out.setOutputStream(stream); 		 		Map map = new HashMap();		 		String[] arr = "1,2,3,4,5".split(",");	 		 		map.put("datas", arr); 		map.put("userName","kinglong"); 		map.put("fullName", "金龙工作室"); 		map.put("domain", "klstudio.com"); 		 		out.writeObject(map);		 		stream.finish(); 		 	} 	 	public void doGet(HttpServletRequest request, HttpServletResponse response) throws 	ServletException, IOException { 		doPost(request, response); 	} }

因为AS3中的ByteArray支持zlib数据压缩和解压，所以我在服务端代码里增加数据压缩。

AMF3很适合Flash和后台服务端的数据交换，我写了这个范例，希望能给大家一参考。

原文地址：http://www.klstudio.com/post/168.html