重要链接网址
Asmack github地址:
https://github.com/Flowdalic/asmack
源码jar下载地址
http://asmack./
XMPP
http:///
Openfire smack地址
http://www./
smack文档
http://www./builds/smack/docs/latest/documentation/index.html
简单代码操作参考
http://www.cnblogs.com/not-code/archive/2011/07/16/2108369.html
(——以下内容为smack文档的个人部分翻译以及见解,考虑到本人英语并不是很好,写这篇文章仅仅作为记录,如果有翻译错误的请指正,共同进步,谢谢)
Getting Started
Configuration
Smack的初始化涉及到2个步骤
1 初始化系统属性——通过SmackConfiguration进行系统属性初始化。这些属性可以通过getxxx()方法获取
2 初始化启动类——初始化类意味着在启动时候实例化该类,如果继承SmackInitializer则需要调用initialize()方法。如果不继承SmackInitializer则初始化的操作必须在静态代码块中,一旦加载类时自动执行
Establishing a Connection创建连接
XmppTCPConnection类是被用来创建连接到xmpp服务器的
- // Create a connection to the jabber.org server._
- XMPPConnection conn1 = new XMPPTCPConnection("jabber.org");
- conn1.connect();
-
- // Create a connection to the jabber.org server on a specific port._
- ConnectionConfiguration config = new ConnectionConfiguration("jabber.org", 5222);
- XMPPConnection conn2 = new XMPPTCPConnection(config);
- conn2.connect();
ConectionConfiguration类提供一些控制操作,譬如是否加密。
Working with the Roster 花名册
Roster可以让你保持获取其他用户的presence状态
用户可以添加进组“Friend”或者“Co-workers”,你可以知晓用户是否在线
检索roster可以通过XMPPConnection.getRoster()方法,roster类允许你查看所有的roster enteries ,群组信息当前的登录状态
Reading and WritingPackets 读写数据包
XMPP服务器和客户端间以XML传递的信息被称为数据包。
org.jivesoftware.smack.packet包内有三种封装好的基本的packet,分别是message,
presence和IQ。
比如Chat和GroupChat类提供了更高级别的结构用以创建发送packet,当然你也可以直接用packet。
- // Create a new presence. Pass in false to indicate we're unavailable._
- Presence presence = new Presence(Presence.Type.unavailable);
- presence.setStatus("Gone fishing");
- // Send the packet (assume we have a XMPPConnection instance called "con").
- con.sendPacket(presence);
Smack提供两种读取packets
PacketListener
和PacketCollector
这两种都通过PacketFilter进行packet加工
A packet listener is used for event style programming, while a packet collector has a result queue of packets that you can do polling and blocking operations on.
(packet listener事件监听,而packet collector是一个packets的可以进行polling和blocking操作的结果集队列。)
So, a packet listener is useful when you want to take some action whenever a packet happens to come in, while a packet collector is useful when you want to wait for a specific packet to arrive.
(packet listener一旦数据包传递抵达的时候你可以进行处理,packet collector则被使用在你需要等待一个指定的packet传递抵达时候。)
Packet collectors and listeners can be created using an Connection instance.
(packet listener和packet collector在connection实例中被创建。)
- // Create a packet filter to listen for new messages from a particular
- // user. We use an AndFilter to combine two other filters._
- PacketFilter filter = new AndFilter(new PacketTypeFilter(Message.class),
- new FromContainsFilter("mary@jivesoftware.com"));
- // Assume we've created a XMPPConnection name "connection".
-
- // First, register a packet collector using the filter we created.
- PacketCollector myCollector = connection.createPacketCollector(filter);
- // Normally, you'd do something with the collector, like wait for new packets.
-
- // Next, create a packet listener. We use an anonymous inner class for brevity.
- PacketListener myListener = new PacketListener() {
- public void processPacket(Packet packet) {
- // Do something with the incoming packet here._
- }
- };
- // Register the listener._
- connection.addPacketListener(myListener, filter);
Managing Connection
Connect and disConnect
- // Create the configuration for this new connection_
- ConnectionConfiguration config = new ConnectionConfiguration("jabber.org", 5222);
-
- AbstractXMPPConnection connection = new XMPPTCPConnection(config);
- // Connect to the server_
- connection.connect();
- // Log into the server_
- connection.login("username", "password", "SomeResource");
-
- ...
-
- // Disconnect from the server_
- connection.disconnect();
Messaging using Chat
Chat
org.jivesoftware.smack.Chat
- // Assume we've created a XMPPConnection name "connection"._
- ChatManager chatmanager = connection.getChatManager();
- Chat newChat = chatmanager.createChat("jsmith@jivesoftware.com", new MessageListener() {
- public void processMessage(Chat chat, Message message) {
- System.out.println("Received message: " + message);
- }
- });
-
- try {
- newChat.sendMessage("Howdy!");
- }
- catch (XMPPException e) {
- System.out.println("Error Delivering block");
- }
-
- Message newMessage = new Message();
- newMessage.setBody("Howdy!");
- message.setProperty("favoriteColor", "red");
- newChat.sendMessage(newMessage);
-
- // Assume a MessageListener we've setup with a chat._
- public void processMessage(Chat chat, Message message) {
- // Send back the same text the other user sent us._
- chat.sendMessage(message.getBody());
- }<span style="color:#ff0000;">
- </span>
incoming Chat
- _// Assume we've created a XMPPConnection name "connection"._
- ChatManager chatmanager = connection.getChatManager().addChatListener(
- new ChatManagerListener() {
- @Override
- public void chatCreated(Chat chat, boolean createdLocally)
- {
- if (!createdLocally)
- chat.addMessageListener(new MyNewMessageListener());;
- }
- });
Roster and Presence
roster entries
包含xmpp地址,备注名,群组(假如该用户不属于任何一组,则调用“unfiled entry”)
- Roster roster = connection.getRoster();
- Collection<RosterEntry> entries = roster.getEntries();
- for (RosterEntry entry : entries) {
- System.out.println(entry);
- }
监听roster和presence更改
- Roster roster = con.getRoster();
- roster.addRosterListener(new RosterListener() {
- // Ignored events public void entriesAdded(Collection<String> addresses) {}
- public void entriesDeleted(Collection<String> addresses) {}
- public void entriesUpdated(Collection<String> addresses) {}
- public void presenceChanged(Presence presence) {
- System.out.println("Presence changed: " + presence.getFrom() + " " + presence);
- }
- });
Provider architecture
smack provider是用于解析packet extension 和 IQ xml流的
有两种类型的provider
IQProvider - parses IQ request into java objects
Extension Provider - parses XML sub-documents attached to packets into PacketExtension instances. By default, Smack only knows how to process a few standard
packets and sub-packets that are in a few namespaces such as:
(解析packet的xml子元素到PacketExtension实例中。Smack默认仅知道处理少数的标准packets和少数的指定的namespaces下的子packets)
jabber:iq:auth
jabber:iq:roster
jabber:iq:register
(provider这块翻译目前就暂且如此,接着会写IQ扩展将会提到这个,具体看IQ扩展)
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