认识smack中的基本对象-IQ

一 IQ类的介绍

IQ继承自Packet，是Info/Query的缩写，IQ是最基本的信息查询包，它被用于从服务器获取信息，或将信息设置到服务器，包括认证、花名册的操作、创建用户等。每个IQ包对象都包含一个类型属性，用于指定改信息包的操作类型，取值为：get、set、result、error。

 The base IQ (Info/Query) packet. IQ packets are used to get and set information on the server, including authentication, roster operations, and creating accounts. Each IQ packet has a specific type that indicates what type of action is being taken: "get", "set", "result", or "error".

 IQ packets can contain a single child element that exists in a specific XML namespace. The combination of the element name and namespace determines what type of IQ packet it is. Some example IQ subpacket snippets:

•<query xmlns="jabber:iq:auth"> -- an authentication IQ.

•<query xmlns="jabber:iq:private"> -- a private storage IQ.

•<pubsub xmlns="http://jabber.org/protocol/pubsub"> -- a pubsub IQ.

 二 IQ类的静态成员

IQ.Type,其可取的值如下：

• IQ.Type.GET
• IQ.Type.SET
• IQ.Type.RESULT
• IQ.Type.ERROR

二 IQ类的方法

getType

 public IQ.Type getType() Returns the type of the IQ packet.

Returns:the type of the IQ packet.

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setType

 public void setType(IQ.Type type) Sets the type of the IQ packet.

Parameters:type - the type of the IQ packet.