asmack实现文件发送(需要改写asmack源码)

因为asmack有一些功能没有实现，其中包括传输文件的功能，所以要先修改asmack的源码。

        如果不修改会出现这样一个包

     

<streamhost jid="[e-mail]/smack" host="127.0.0.1" port="7777"/>

       服务器地址会被解析成127.0.0.1 导致这样一个错误。貌似smack 3.2.1  IBB 传输时有bug也会报这个错。    

Could not establish socket with any provided host

推荐使用强大的eclipse来编译和打包源码，只在要在源码路径下建一个工程，eclipse会帮你生成好目录，

asmack依赖两个包，xmlpull和android的Apache包。后者不用理会，只需要吧xmlpull这个包加进去就可以了，不用理会报错，直接Export就行。

只需要吧 org.jivesoftware.smackx.filetransfer.Socks5TransferNegotiator.discoverLocalIP() 改为

private String discoverLocalIP() throws UnknownHostException {
		try {
			for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) {
				NetworkInterface intf = en.nextElement();
				for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();) {
					InetAddress inetAddress = enumIpAddr.nextElement();
					if (!inetAddress.isLoopbackAddress()) {
						return inetAddress.getHostAddress().toString();
					}
				}
			}
		} catch (SocketException ex) {
			Logger.error("Error retrieving the local IP", ex);
		}
		throw new UnknownHostException("Failed to retrieve local IP");
        //return InetAddress.getLocalHost().getHostAddress();
    }

就可以了。

源代码中是这样的。。。。。。。非常坑爹 - - ！

private String discoverLocalIP() throws UnknownHostException {
		return InetAddress.getLocalHost().getHostAddress();
    }

英文原版网址： http://code.google.com/p/asmack/issues/detail?id=61

准备工作做好以后，写代码就比较简单了。

发送端：

只需要注意  发送文件时所需的JID一定要是完整JID比如 [e-mail]/smack

private static void sendFile(String user,XMPPConnection conn,File file) throws Exception{
		FileTransferManager manager = new FileTransferManager(conn);
		OutgoingFileTransfer transfer = manager.createOutgoingFileTransfer(user);
		transfer.sendFile(file,"data backup");
		manager.addFileTransferListener(new FileTransferListener() {
            public void fileTransferRequest(FileTransferRequest request) {
            	try{
            		Log.e("Have file","file");
            		IncomingFileTransfer transfer = request.accept();
                	transfer.recieveFile(new File("complete_works.txt"));
            	}catch(Exception e){
            		Log.e("RecFile Ex In!",e.getMessage());
            	}
            }
		});
	}

接收端：

ServiceDiscoverManager是一个很强大的类

具体介绍看 http://www.igniterealtime.org/builds/smack/docs/latest/javadoc/org/jivesoftware/smackx/ServiceDiscoveryManager.html

private static void setFileListener(final XMPPConnection conn) {
		Thread thread = new Thread() {
			public void run() {
				ServiceDiscoveryManager sdm = ServiceDiscoveryManager
						.getInstanceFor(conn);
				if (sdm == null)
					sdm = new ServiceDiscoveryManager(conn);
				sdm.addFeature("http://jabber.org/protocol/disco#info");
				sdm.addFeature("jabber:iq:privacy");
				// Create the file transfer manager
				final FileTransferManager managerListner = new FileTransferManager(conn);
				FileTransferNegotiator.setServiceEnabled(conn, true);
				Log.i("File transfere manager", "created");
				// Create the listener
				managerListner.addFileTransferListener(new FileTransferListener() {
					@Override
					public void fileTransferRequest(final FileTransferRequest request) {
						Log.i("Recieve File","new file transfere request  new file transfere request   new file transfere request");
						Log.i("file request","from" + request.getRequestor());
						IncomingFileTransfer transfer = request.accept();
						Log.i("Recieve File alert dialog", "accepted");
						File file = new File("/sdcard/data/"+ request.getFileName());
						
						try {
							if (!file.exists()){
								Log.i("have no file",file.getPath());
								file.createNewFile();
							}
							transfer.recieveFile(file);
						}catch (Exception e) {
							e.printStackTrace();
						}
					}
				});


			}
		};
		thread.start();
	}