抽出flash与java 用AMF交互代码

最近做的一个java 与flash通讯的项目,由于项目框架的需要,要把AMF 格式解析代码抽出.代码有点乱,现丑了.

 

package com.musicxx.web.servlet;  
  
  
  
import java.io.ByteArrayOutputStream;  
import java.io.IOException;  
import java.io.InputStream;  
  
import javax.servlet.ServletException;  
import javax.servlet.http.HttpServlet;  
import javax.servlet.http.HttpServletRequest;  
import javax.servlet.http.HttpServletResponse;  
  
import juan.framework.action.Action4J;  
import juan.framework.arguments.ArgumentsFactory;  
import juan.framework.arguments.IArguments;  
import juan.view.context.IContext;  
import juan.view.context.impl.InnerContextImpl;  
  
import org.apache.commons.logging.Log;  
import org.apache.commons.logging.LogFactory;  
  
import flex.messaging.io.SerializationContext;  
import flex.messaging.io.amf.ActionMessage;  
import flex.messaging.io.amf.Amf0Input;  
import flex.messaging.io.amf.Amf0Output;  
import flex.messaging.io.amf.Java15Amf0Output;  
import flex.messaging.io.amf.MessageBody;  
import flex.messaging.io.amf.MessageHeader;  
  
  
  
/** 
 * Description : AMF通讯方式 
 *  
 * @author: JayChou 
 * @version 1.0 
 * @Created on Aug 18, 2008 5:57:21 PM 
 */  
public class AmfServlet extends HttpServlet  {  
 private static Log logger = LogFactory.getLog(AmfServlet.class);  
    /** 
     * flash-->java 
     * @return 
     * @throws IOException  
     * @throws ClassNotFoundException  
     * @throws Exception 
     */  
    private ActionMessage in(InputStream is) throws IOException, ClassNotFoundException {  
        ActionMessage inMs = new ActionMessage();  
        Amf0Input amfIn = new Amf0Input(SerializationContext.getSerializationContext());  
        amfIn.setInputStream(is);  
        int version = amfIn.readUnsignedShort();  
        inMs.setVersion(version);  
  
        int headerCount = amfIn.readUnsignedShort();  
        for (int i = 0; i < headerCount; ++i) {  
            MessageHeader header = new MessageHeader();  
            inMs.addHeader(header);  
            header.setName(amfIn.readUTF());  
            header.setMustUnderstand(amfIn.readBoolean());  
            amfIn.readInt();  
            amfIn.reset();  
            header.setData(amfIn.readObject());  
        }  
  
        int bodyCount = amfIn.readUnsignedShort();  
        for (int i = 0; i < bodyCount; ++i) {  
            MessageBody body = new MessageBody();  
            inMs.addBody(body);  
            body.setTargetURI(amfIn.readUTF());  
            body.setResponseURI(amfIn.readUTF());  
            amfIn.readInt();  
            amfIn.reset();  
            body.setData(amfIn.readObject());  
        }  
  
        amfIn.close();  
        amfIn=null;  
          
        return inMs;  
    }  
  
    /** 
     * java --> flash 
     * @param o 
     * @throws IOException  
     * @throws Exception 
     */  
    private void out(ActionMessage outMs,HttpServletRequest request, HttpServletResponse response) throws IOException {  
        ByteArrayOutputStream outBuffer = new ByteArrayOutputStream();    
          
        Amf0Output amfOut = new Java15Amf0Output(SerializationContext.getSerializationContext());  
        int version = outMs.getVersion();  
        amfOut.setAvmPlus(version > 0);  
        amfOut.setOutputStream(outBuffer);  
        amfOut.writeShort(version);  
  
        int headerCount = outMs.getHeaderCount();  
        amfOut.writeShort(headerCount);  
        for (int i = 0; i < headerCount; ++i) {  
            MessageHeader header = outMs.getHeader(i);  
            amfOut.writeUTF(header.getName());  
            amfOut.writeBoolean(header.getMustUnderstand());  
            amfOut.writeInt(-1);  
            amfOut.reset();  
            amfOut.writeObject(header.getData());  
        }  
  
        int bodyCount = outMs.getBodyCount();  
        amfOut.writeShort(bodyCount);  
        for (int i = 0; i < bodyCount; ++i) {  
            MessageBody body = outMs.getBody(i);  
            if (body.getTargetURI() == null)  
                amfOut.writeUTF("null");  
            else  
                amfOut.writeUTF(body.getTargetURI());  
            if (body.getResponseURI() == null)  
                amfOut.writeUTF("null");  
            else  
                amfOut.writeUTF(body.getResponseURI());  
            amfOut.writeInt(-1);  
            amfOut.reset();  
            amfOut.writeObject(body.getData());  
        }  
  
        response.setContentType(request.getContentType());  
        response.setContentLength(outBuffer.size());  
        outBuffer.writeTo(response.getOutputStream());  
        response.flushBuffer();  
        amfOut.flush();  
        amfOut.close();  
        amfOut=null;  
    }  
      
    @Override  
    protected void service(HttpServletRequest req, HttpServletResponse resp)  
            throws ServletException, IOException {  
        Action4J action = new Action4J();  
        IContext icontext = new InnerContextImpl();  
        IArguments args = ArgumentsFactory.getArguments();  
          
        action.setContext(icontext);  
        action.setRequest(req);  
        action.setResponse(resp);  
        action.setServletConfig(getServletConfig());  
        action.setServletContext(getServletContext());  
          
        ActionMessage outMs = new ActionMessage();  
        ActionMessage inMs = null;  
        try {  
         inMs = in(req.getInputStream());  
            outMs.setVersion(inMs.getVersion());  
              
            for(int i=0;i<inMs.getBodyCount();i++){  
                  
                MessageBody body = inMs.getBody(i);  
                String method = body.getReplyMethod().split("\\.")[1];  
                Object[] o = (Object[]) body.getData();  
                  
                Object[] arr = (Object[]) o;  
                for (int j = 0; j < arr.length; j++){  
                    args.add("index" + (j+1), arr[j]);  
                }  
                  
                action.execute("/"+method, args);  
                Object result=action.getContext().get("result");  
  
                MessageBody responseBody = new MessageBody();  
                responseBody.setData(result);  
                responseBody.setTargetURI( body.getResponseURI()+ "/onResult");  
                outMs.addBody(responseBody);       
                  
                args.clear();  
            }  
        } catch (Exception e) {    
         logger.error(e.getMessage());  
         MessageBody responseBody = new MessageBody();  
            responseBody.setData(new Object[]{100});  
            responseBody.setTargetURI( inMs.getBody(0).getResponseURI()+ "/onResult");  
            outMs.addBody(responseBody);    
        } finally {  
            args.clear();  
            out(outMs,req,resp);  
        }  
    }  
  
}  

 

评论

1 楼 shijian0306 2009-12-03  

哥们，你的写的不错，有这个想法难得。
请允许我转下你的文章。。。