Smack编程库进行代码功能调试

http://www.tuicool.com/articles/U3Afiy

使用Smack编程库进行代码功能调试

关于Smack编程库，前面我们提到，它是面向Java端的api，主要在PC上使用，利用它我们可以 向openfire服务器注册用户，发送消息，并且可以通过监听器获得此用户的应答消息，以及构建聊天室，分组，个人通讯录等等。

下面我们写几个程序小例子测试一下。

（1）登录操作

PPConnection.DEBUG_ENABLED = true;
AccountManager accountManager;
final ConnectionConfiguration connectionConfig = new ConnectionConfiguration(
"192.168.1.78", Integer.parseInt("5222"), "csdn.shimiso.com");

// 允许自动连接
connectionConfig.setReconnectionAllowed(true);
connectionConfig.setSendPresence(true);

Connection connection = new XMPPConnection(connectionConfig);
try {
connection.connect();// 开启连接
accountManager = connection.getAccountManager();// 获取账户管理类
} catch (XMPPException e) {
throw new IllegalStateException(e);
}

// 登录
connection.login("admin", "admin","SmackTest");
System.out.println(connection.getUser()); 
connection.getChatManager().createChat("shimiso@csdn.shimiso.com",null).sendMessage("Hello word!");

运行结果：

在login中一共有三个参数，登录名，密码，资源名，可能有人不明白资源名到底是什么意思，其实就是客户端的来源，客户端的名称，如果不写它默认就叫smack，如果你用相同的账户不同的资源名和同一个人发三条消息，那将会弹出三个窗口，而不是一个窗口。 
同时smack还为我们提供了非常好的调试工具Smack Debug，利用该工具我们可以准确的捕获详细的往返报文信息。

（2）下面我们继续写个聊天的例子：

PPConnection.DEBUG_ENABLED = true;
AccountManager accountManager;
final ConnectionConfiguration connectionConfig = new ConnectionConfiguration(
"192.168.1.78", Integer.parseInt("5222"), "csdn.shimiso.com");

// 允许自动连接
connectionConfig.setReconnectionAllowed(true);
connectionConfig.setSendPresence(true);

Connection connection = new XMPPConnection(connectionConfig);
try {
connection.connect();// 开启连接
accountManager = connection.getAccountManager();// 获取账户管理类
} catch (XMPPException e) {
throw new IllegalStateException(e);
}

// 登录
connection.login("admin", "admin","SmackTest3");  
ChatManager chatmanager = connection.getChatManager();
Chat newChat = chatmanager.createChat("shimiso@csdn.shimiso.com", new MessageListener() {
public void processMessage(Chat chat, Message message) {
if (message.getBody() != null) {
System.out.println("Received from 【"
+ message.getFrom() + "】 message: "
+ message.getBody());
}

}
});
Scanner input = new Scanner(System.in);
while (true) {
String message = input.nextLine(); 
newChat.sendMessage(message);
}

运行结果：

这里我们用Scanner来捕捉用户在控制台的键盘操作，将信息发出，同时创建了一个MessageListener监听，在其中强制实现processMessage方法即可捕获发回的信息，在初次使用上还是较为容易上手的，我们只要细心查看API即可逐步深入下去。

（3）除了聊天以外我们经常还能想到就是广播，需要给所有在线的用户发送一个通知，或者给所有在线和离线的用户全发送，我们先演示如何给在线用户发送一个广播：

PPConnection.DEBUG_ENABLED = false;
AccountManager accountManager;
final ConnectionConfiguration connectionConfig = new ConnectionConfiguration(
"192.168.1.78", Integer.parseInt("5222"), "csdn.shimiso.com");

// 允许自动连接
connectionConfig.setReconnectionAllowed(true);
connectionConfig.setSendPresence(true);

Connection connection = new XMPPConnection(connectionConfig);
try {
connection.connect();// 开启连接
accountManager = connection.getAccountManager();// 获取账户管理类
} catch (XMPPException e) {
throw new IllegalStateException(e);
}
connection.login("admin", "admin","SmackTest3"); 
Message newmsg = new Message(); 
newmsg.setTo("shimiso@csdn.shimiso.com");
newmsg.setSubject("重要通知");
newmsg.setBody("今天下午2点60分有会！");
newmsg.setType(Message.Type.headline);// normal支持离线 
connection.sendPacket(newmsg);
connection.disconnect();

运行结果：

将参数设置为Message.Type.normal即可支持离线广播，openfire系统会自动判断该用户是否在线，如果在线就直接发送出去，如果不在线则将信息存入ofoffline表，现在我将shimiso用户退出登录，再给它发消息，我们可以进入openfire库的ofoffline表中，非常清楚看到里面躺着一条离线消息记录是发给shimiso这个用户的

（4）那么我们如何让shimiso这个用户一登陆就取到离线消息呢？请看如下代码

PPConnection.DEBUG_ENABLED = false;
AccountManager accountManager;
final ConnectionConfiguration connectionConfig = new ConnectionConfiguration(
"192.168.1.78", Integer.parseInt("5222"), "csdn.shimiso.com");

// 允许自动连接
connectionConfig.setReconnectionAllowed(true);
connectionConfig.setSendPresence(false);//不要告诉服务器自己的状态
Connection connection = new XMPPConnection(connectionConfig);
try {
connection.connect();// 开启连接
accountManager = connection.getAccountManager();// 获取账户管理类
} catch (XMPPException e) {
throw new IllegalStateException(e);
} 
connection.login("shimiso", "123","SmackTest"); 
OfflineMessageManager offlineManager = new OfflineMessageManager(
connection);
try {
Iterator<org.jivesoftware.smack.packet.Message> it = offlineManager
.getMessages();

System.out.println(offlineManager.supportsFlexibleRetrieval());
System.out.println("离线消息数量: " + offlineManager.getMessageCount());

Map<String, ArrayList<Message>> offlineMsgs = new HashMap<String, ArrayList<Message>>();

while (it.hasNext()) {
org.jivesoftware.smack.packet.Message message = it.next();
System.out
.println("收到离线消息, Received from 【" + message.getFrom()
+ "】 message: " + message.getBody());
String fromUser = message.getFrom().split("/")[0];

if (offlineMsgs.containsKey(fromUser)) {
offlineMsgs.get(fromUser).add(message);
} else {
ArrayList<Message> temp = new ArrayList<Message>();
temp.add(message);
offlineMsgs.put(fromUser, temp);
}
}

// 在这里进行处理离线消息集合......
Set<String> keys = offlineMsgs.keySet();
Iterator<String> offIt = keys.iterator();
while (offIt.hasNext()) {
String key = offIt.next();
ArrayList<Message> ms = offlineMsgs.get(key);

for (int i = 0; i < ms.size(); i++) {
System.out.println("-->" + ms.get(i));
}
}

offlineManager.deleteMessages();
} catch (Exception e) {
e.printStackTrace();
}
offlineManager.deleteMessages();//删除所有离线消息
Presence presence = new Presence(Presence.Type.available);
        		nnection.sendPacket(presence);//上线了
        		nnection.disconnect();//关闭连接

运行结果：

这里我们需要特别当心的是先不要告诉openfire服务器你上线了，否则永远也拿不到离线消息，用下面老外的话将就是在你上线之前去获取离线消息，这么设计是很有道理的。

The OfflineMessageManager helps manage offline messages even before the user has sent an available presence. When a user asks for his offline messages before sending an available presence then the server will not send a flood with all the offline messages when the user becomes online. The server will not send a flood with all the offline messages to the session that made the offline messages request or to any other session used by the user that becomes online.

同时拿到离线消息以后删除离线消息offlineManager.deleteMessages();，同是通知服务器自己上线了。

（5）下面我们来看看如何来发送文件

PPConnection.DEBUG_ENABLED = false;
AccountManager accountManager;
final ConnectionConfiguration connectionConfig = new ConnectionConfiguration(
"192.168.1.78", Integer.parseInt("5222"), "csdn.shimiso.com");

// 允许自动连接
connectionConfig.setReconnectionAllowed(true);
connectionConfig.setSendPresence(true);

Connection connection = new XMPPConnection(connectionConfig);
try {
connection.connect();// 开启连接
accountManager = connection.getAccountManager();// 获取账户管理类
} catch (XMPPException e) {
throw new IllegalStateException(e);
}
  connection.login("admin", "admin","Rooyee"); 
  Presence pre = connection.getRoster().getPresence("shimiso@csdn.shimiso.com");
System.out.println(pre);
if (pre.getType() != Presence.Type.unavailable) {
// 创建文件传输管理器
FileTransferManager manager = new FileTransferManager(connection);
// 创建输出的文件传输
OutgoingFileTransfer transfer = manager
.createOutgoingFileTransfer(pre.getFrom());
// 发送文件
transfer.sendFile(new File("E:\Chrysanthemum.jpg"), "图片");
while (!transfer.isDone()) {
if (transfer.getStatus() == FileTransfer.Status.in_progress) {
// 可以调用transfer.getProgress();获得传输的进度　
System.out.println(transfer.getStatus());
System.out.println(transfer.getProgress());
System.out.println(transfer.isDone());
}
}
}

运行结果：

在这里我们需要特别注意的是，跨资源是无法发送文件的，看connection.login("admin", "admin","Rooyee");这个代码就明白了，必须是“域名和资源名”完全相同的两个用户才可以互发文件，否则永远都没反应，如果不清楚自己所用的客户端的资源名，可以借助前面提到的SmackDebug工具查看往返信息完整报文，在to和from中一定可以看到。

如果我们自己要写文件接收例子的话，参考代码如下：

FileTransferManager transfer = new FileTransferManager(connection);
transfer.addFileTransferListener(new RecFileTransferListener());
public class RecFileTransferListener implements FileTransferListener {

public String getFileType(String fileFullName) {
if (fileFullName.contains(".")) {
return "." + fileFullName.split("//.")[1];
} else {
return fileFullName;
}

}

@Override
public void fileTransferRequest(FileTransferRequest request) {
System.out.println("接收文件开始.....");
final IncomingFileTransfer inTransfer = request.accept();
final String fileName = request.getFileName();
long length = request.getFileSize();
final String fromUser = request.getRequestor().split("/")[0];
System.out.println("文件大小:" + length + "  " + request.getRequestor());
System.out.println("" + request.getMimeType());
try {

JFileChooser chooser = new JFileChooser();
chooser.setCurrentDirectory(new File("."));

int result = chooser.showOpenDialog(null);

if (result == JFileChooser.APPROVE_OPTION) {
final File file = chooser.getSelectedFile();
System.out.println(file.getAbsolutePath());
new Thread() {
public void run() {
try {

System.out.println("接受文件: " + fileName);
inTransfer
.recieveFile(new File(file
.getAbsolutePath()
+ getFileType(fileName)));

Message message = new Message();
message.setFrom(fromUser);
message.setProperty("REC_SIGN", "SUCCESS");
message.setBody("[" + fromUser + "]发送文件: "
+ fileName + "/r/n" + "存储位置: "
+ file.getAbsolutePath()
+ getFileType(fileName));
if (Client.isChatExist(fromUser)) {
Client.getChatRoom(fromUser)
.messageReceiveHandler(message);
} else {
ChatFrameThread cft = new ChatFrameThread(
fromUser, message);
cft.start();

}
} catch (Exception e2) {
e2.printStackTrace();
}
}
}.start();
} else {

System.out.println("拒绝接受文件: " + fileName);

request.reject();
Message message = new Message();
message.setFrom(fromUser);
message.setBody("拒绝" + fromUser + "发送文件: " + fileName);
message.setProperty("REC_SIGN", "REJECT");
if (Client.isChatExist(fromUser)) {
Client.getChatRoom(fromUser).messageReceiveHandler(message);
} else {
ChatFrameThread cft = new ChatFrameThread(fromUser, message);
cft.start();
}
}

/*
 * InputStream in = inTransfer.recieveFile();
 * 
 * String fileName = "r"+inTransfer.getFileName();
 * 
 * OutputStream out = new FileOutputStream(new
 * File("d:/receive/"+fileName)); byte[] b = new byte[512];
 * while(in.read(b) != -1) { out.write(b); out.flush(); }
 * 
 * in.close(); out.close();
 */
} catch (Exception e) {
e.printStackTrace();
}

System.out.println("接收文件结束.....");

}

}

（6） 用户列表

**
 * 返回所有组信息 <RosterGroup>
 * 
 * @return List(RosterGroup)
 */
public static List<RosterGroup> getGroups(Roster roster) {
List<RosterGroup> groupsList = new ArrayList<RosterGroup>();
Collection<RosterGroup> rosterGroup = roster.getGroups();
Iterator<RosterGroup> i = rosterGroup.iterator();
while (i.hasNext())
groupsList.add(i.next());
return groupsList;
}

/**
 * 返回相应(groupName)组里的所有用户<RosterEntry>
 * 
 * @return List(RosterEntry)
 */
public static List<RosterEntry> getEntriesByGroup(Roster roster,
String groupName) {
List<RosterEntry> EntriesList = new ArrayList<RosterEntry>();
RosterGroup rosterGroup = roster.getGroup(groupName);
Collection<RosterEntry> rosterEntry = rosterGroup.getEntries();
Iterator<RosterEntry> i = rosterEntry.iterator();
while (i.hasNext())
EntriesList.add(i.next());
return EntriesList;
}

/**
 * 返回所有用户信息 <RosterEntry>
 * 
 * @return List(RosterEntry)
 */
public static List<RosterEntry> getAllEntries(Roster roster) {
List<RosterEntry> EntriesList = new ArrayList<RosterEntry>();
Collection<RosterEntry> rosterEntry = roster.getEntries();
Iterator<RosterEntry> i = rosterEntry.iterator();
while (i.hasNext())
EntriesList.add(i.next());
return EntriesList;
}

（7）用户头像的获取， 使用VCard，很强大，具体自己看API吧， 可以看看VCard传回来XML的组成，含有很多信息的

**
 * 获取用户的vcard信息
 * @param connection
 * @param user
 * @return
 * @throws XMPPException
 */
public static VCard getUserVCard(XMPPConnection connection, String user) throws XMPPException
{
VCard vcard = new VCard();
vcard.load(connection, user);

return vcard;
}

/**
 * 获取用户头像信息
 */
public static ImageIcon getUserImage(XMPPConnection connection, String user) {
ImageIcon ic = null;
try {
System.out.println("获取用户头像信息: "+user);
VCard vcard = new VCard();
vcard.load(connection, user);

if(vcard == null || vcard.getAvatar() == null)
{
return null;
}
ByteArrayInputStream bais = new ByteArrayInputStream(
vcard.getAvatar());
Image image = ImageIO.read(bais);


    ic = new ImageIcon(image);
System.out.println("图片大小:"+ic.getIconHeight()+" "+ic.getIconWidth());

} catch (Exception e) {
e.printStackTrace();
}
return ic;
}

（8）组操作和用户分组操作

**
 * 添加一个组
 */
public static boolean addGroup(Roster roster,String groupName)
{
try {
roster.createGroup(groupName);
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}

/**
 * 删除一个组
 */
public static boolean removeGroup(Roster roster,String groupName)
{
return false;
}

/**
 * 添加一个好友  无分组
 */
public static boolean addUser(Roster roster,String userName,String name)
{
try {
roster.createEntry(userName, name, null);
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
 * 添加一个好友到分组
 * @param roster
 * @param userName
 * @param name
 * @return
 */
public static boolean addUser(Roster roster,String userName,String name,String groupName)
{
try {
roster.createEntry(userName, name,new String[]{ groupName});
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}

/**
 * 删除一个好友
 * @param roster
 * @param userName
 * @return
 */
public static boolean removeUser(Roster roster,String userName)
{
try {

if(userName.contains("@"))
{
userName = userName.split("@")[0];
}
RosterEntry entry = roster.getEntry(userName);
System.out.println("删除好友:"+userName);
System.out.println("User: "+(roster.getEntry(userName) == null));
roster.removeEntry(entry);

return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}

}

（9）用户查询

public static List<UserBean> searchUsers(XMPPConnection connection,String serverDomain,String userName) throws XMPPException
{
List<UserBean> results = new ArrayList<UserBean>();
System.out.println("查询开始..............."+connection.getHost()+connection.getServiceName());

UserSearchManager usm = new UserSearchManager(connection);


        Form searchForm = usm.getSearchForm(serverDomain);
        Form answerForm = searchForm.createAnswerForm();
        answerForm.setAnswer("Username", true);
        answerForm.setAnswer("search", userName);
        ReportedData data = usm.getSearchResults(answerForm, serverDomain);
 
 Iterator<Row> it = data.getRows();
 Row row = null;
 UserBean user = null;
 while(it.hasNext())
 {
 user = new UserBean();
 row = it.next();
 user.setUserName(row.getValues("Username").next().toString());
 user.setName(row.getValues("Name").next().toString());
 user.setEmail(row.getValues("Email").next().toString());
 System.out.println(row.getValues("Username").next());
 System.out.println(row.getValues("Name").next());
 System.out.println(row.getValues("Email").next());
 results.add(user);
 //若存在，则有返回,UserName一定非空，其他两个若是有设，一定非空
 }
 
 return results;
}

（10）修改自身状态， 包括上线，隐身，对某人隐身，对某人上线

ublic static void updateStateToAvailable(XMPPConnection connection)
{
Presence presence = new Presence(Presence.Type.available);
        		nnection.sendPacket(presence);
     	

public static void updateStateToUnAvailable(XMPPConnection connection)
{
Presence presence = new Presence(Presence.Type.unavailable);
        		nnection.sendPacket(presence);
    	}

public static void updateStateToUnAvailableToSomeone(XMPPConnection connection,String userName)
{
Presence presence = new Presence(Presence.Type.unavailable);
presence.setTo(userName);
        		nnection.sendPacket(presence);
}
public static void updateStateToAvailableToSomeone(XMPPConnection connection,String userName)
{
Presence presence = new Presence(Presence.Type.available);
presence.setTo(userName);
        		nnection.sendPacket(presence);

}

（11）心情修改

**
 * 修改心情
 * @param connection
 * @param status
 */
public static void changeStateMessage(XMPPConnection connection,String status)
{
Presence presence = new Presence(Presence.Type.available);
presence.setStatus(status);
connection.sendPacket(presence);

}

（12）修改用户头像， 有点麻烦，主要是读入图片文件，编码，传输之

public static void changeImage(XMPPConnection connection,File f) throws XMPPException, IOException{

VCard vcard = new VCard();
vcard.load(connection);

        byte[] bytes;
      
            bytes = getFileBytes(f);
            String encodedImage = StringUtils.encodeBase64(bytes);
            vcard.setAvatar(bytes, encodedImage);
            vcard.setEncodedImage(encodedImage);
            vcard.setField("PHOTO", "<TYPE>image/jpg</TYPE><BINVAL>"
                    + encodedImage + "</BINVAL>", true);
            
            
            ByteArrayInputStream bais = new ByteArrayInputStream(
vcard.getAvatar());
Image image = ImageIO.read(bais);
ImageIcon ic = new ImageIcon(image);
 
       
      
        vcard.save(connection);
       
}

      private static byte[] getFileBytes(File file) throws IOException {
        		BufferedInputStream bis = null;
        	try {
            bis = new BufferedInputStream(new FileInputStream(file));
            int bytes = (int) file.length();
            byte[] buffer = new byte[bytes];
            int readBytes = bis.read(buffer);
            if (readBytes != buffer.length) {
                throw new IOException("Entire file not read");
            }
            return buffer;
        } finally {
            if (bis != null) {
                bis.close();
            }
        }
}

（13）用户状态的监听， 即对方改变头像，状态，心情时，更新自己用户列表，其实这里已经有 smack 实现的监听器

nal Roster roster = Client.getRoster();

roster.addRosterListener(
new RosterListener() {

@Override
public void entriesAdded(Collection<String> arg0) {
// TODO Auto-generated method stub
System.out.println("--------EE:"+"entriesAdded");
}

@Override
public void entriesDeleted(Collection<String> arg0) {
// TODO Auto-generated method stub
System.out.println("--------EE:"+"entriesDeleted");
}

@Override
public void entriesUpdated(Collection<String> arg0) {
// TODO Auto-generated method stub
System.out.println("--------EE:"+"entriesUpdated");
}

@Override
public void presenceChanged(Presence arg0) {
// TODO Auto-generated method stub
System.out.println("--------EE:"+"presenceChanged");
}   

});

至此，有关openfire和smack的安装部署使用基本代码调试讲解完毕，本集源码容我稍作整理后再更新出来，请大家保持关注，同时下面会我们进入课程的重点环节，包括

如何在Openfire服务器上开发一款Android端的聊天软件。。。

如何在openfire上二次开发，如何在在web和android上接入IM模块。。。

如何在Spark基础二次开发基于java swing的PC客户端。。。

结合我之前讲的 Android端服务器推送技术原理分析及XMPP简单的使用 由浅入深的对apache MINA，XMPP协议，以及socket底层等一些难点进行讨论剖析。。。

Openfire作为一款优秀的XMPP开源服务器，整合及时通讯，视频，语音，会议室等多种服务，如何更好的让它集成到现有的系统中去才是我们研究的最终价值，否则一切都是空谈，本教程结合实战和理论，为大家提供提供一个共同研究和学习的平台，欢迎有识之士加入我们的技术交流群:173711587， 共同探讨Java开发那些事儿

放些图以飨读者。。。