iOS开发——项目实战技术OC篇&XMPP简单总结

时间：2015-09-20 01:44:24 阅读：466 评论：0 收藏：0 [点我收藏+]

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XMPP简单总结

最近面试被问到了一个问题，笔者当时就懵了：什么XMPP，平时怎么使用，使用过程中遇到什么问题？。

但是还是通过记忆，简单的说了一下自己所知道了，不过那并没有撒卵用，所以你懂的

XMPPFramework是一个OS X/iOS平台的开源项目，使用Objective-C实现了XMPP协议（RFC-3920），同时还提供了用于读写XML的工具，大大简化了基于XMPP的通信应用的开发。

1.关于连接的

1 //此方法在stream开始连接服务器的时候调用
2 - (void)xmppStreamDidConnect:(XMPPStream *)sender
3 //此方法在stream连接断开的时候调用
4 - (void)xmppStreamDidDisconnect:(XMPPStream *)sender withError:(NSError *)error;

2.关于验证的

1 //验证失败后调用
2 - (void)xmppStream:(XMPPStream *)sender didNotAuthenticate:(NSXMLElement *)error
3 //验证成功后调用
4 - (void)xmppStreamDidAuthenticate:(XMPPStream *)sender

3.关于通信的

1 //收到消息后调用
2 - (void)xmppStream:(XMPPStream *)sender didReceiveMessage:(XMPPMessage *)message
3 //接受到好友状态更新
4 - (void)xmppStream:(XMPPStream *)sender didReceivePresence:(XMPPPresence *)presence

简单实战

1. 登录和好友上下线

1.1XMPP中常用对象们

XMPPStream：xmpp基础服务类
XMPPRoster：好友列表类
XMPPRosterCoreDataStorage：好友列表（用户账号）在core data中的操作类
XMPPvCardCoreDataStorage：好友名片（昵称，签名，性别，年龄等信息）在core data中的操作类
XMPPvCardTemp：好友名片实体类，从数据库里取出来的都是它
xmppvCardAvatarModule：好友头像
XMPPReconnect：如果失去连接,自动重连
XMPPRoom：提供多用户聊天支持
XMPPPubSub：发布订阅

1.2登录操作，也就是连接xmpp服务器

 1 - (void)connect {
 2     if (self.xmppStream == nil) {
 3         self.xmppStream = [[XMPPStream alloc] init];
 4         [self.xmppStream addDelegate:self delegateQueue:dispatch_get_main_queue()];
 5     }
 6     if (![self.xmppStream isConnected]) {
 7         NSString *username = [[NSUserDefaults standardUserDefaults] objectForKey:@"username"];
 8         XMPPJID *jid = [XMPPJID jidWithUser:username domain:@"lizhen" resource:@"Ework"];
 9         [self.xmppStream setMyJID:jid];
10         [self.xmppStream setHostName:@"10.4.125.113"];
11         NSError *error = nil;
12         if (![self.xmppStream connect:&error]) {
13             NSLog(@"Connect Error: %@", [[error userInfo] description]);
14         }
15     }
16 }

connect成功之后会依次调用XMPPStreamDelegate的方法，首先调用

- (void)xmppStream:(XMPPStream *)sender socketDidConnect:(GCDAsyncSocket *)socket
 
...

然后

- (void)xmppStreamDidConnect:(XMPPStream *)sender

在该方法下面需要使用xmppStream 的authenticateWithPassword方法进行密码验证，成功的话会响应delegate的方法，就是下面这个

- (void)xmppStreamDidAuthenticate:(XMPPStream *)sender

1.3上线
实现 - (void)xmppStreamDidAuthenticate:(XMPPStream *)sender 委托方法

1 - (void)xmppStreamDidAuthenticate:(XMPPStream *)sender {
2     XMPPPresence *presence = [XMPPPresence presenceWithType:@"available"];
3     [self.xmppStream sendElement:presence];
4 }

1.4退出并断开连接

1 - (void)disconnect {
2     XMPPPresence *presence = [XMPPPresence presenceWithType:@"unavailable"];
3     [self.xmppStream sendElement:presence];
4       
5     [self.xmppStream disconnect];
6 }

1.5好友状态
获取好友状态，通过实现

- (void)xmppStream:(XMPPStream *)sender didReceivePresence:(XMPPPresence *)presence
 
...

方法，当接收到 presence 标签的内容时，XMPPFramework 框架回调该方法

presence 的状态：

available 上线
away 离开
do not disturb 忙碌
unavailable 下线

 1 - (void)xmppStream:(XMPPStream *)sender didReceivePresence:(XMPPPresence *)presence {
 2     NSString *presenceType = [presence type];
 3     NSString *presenceFromUser = [[presence from] user];
 4     if (![presenceFromUser isEqualToString:[[sender myJID] user]]) {
 5         if ([presenceType isEqualToString:@"available"]) {
 6             //
 7         } else if ([presenceType isEqualToString:@"unavailable"]) {
 8             //
 9         }
10     }
11 }

2. 接收消息和发送消息
2.1接收消息
通过实现

- (void)xmppStream:(XMPPStream *)sender didReceiveMessage:(XMPPMessage *)message;

当接收到 message 标签的内容时，XMPPFramework 框架回调该方法
根据 XMPP 协议，消息体的内容存储在标签 body 内

- (void)xmppStream:(XMPPStream *)sender didReceiveMessage:(XMPPMessage *)message {
    NSString *messageBody = [[message elementForName:@"body"] stringValue];
}

2.2发送消息
发送消息，我们需要根据 XMPP 协议，将数据放到标签内

 1 - (void)sendMessage:(NSString *) message toUser:(NSString *) user {
 2     NSXMLElement *body = [NSXMLElement elementWithName:@"body"];
 3     [body setStringValue:message];
 4     NSXMLElement *message = [NSXMLElement elementWithName:@"message"];
 5     [message addAttributeWithName:@"type" stringValue:@"chat"];
 6     NSString *to = [NSString stringWithFormat:@"%@@example.com", user];
 7     [message addAttributeWithName:@"to" stringValue:to];
 8     [message addChild:body];
 9     [self.xmppStream sendElement:message];
10 }

3. 获取好友信息和删除好友
3.1好友列表和好友名片

 1 [_xmppRoster fetchRoster];//获取好友列表
 2 //获取到一个好友节点
 3 - (void)xmppRoster:(XMPPRoster *)sender didRecieveRosterItem:(NSXMLElement *)item
 4 //获取完好友列表
 5 - (void)xmppRosterDidEndPopulating:(XMPPRoster *)sender
 6 //到服务器上请求联系人名片信息
 7 - (void)fetchvCardTempForJID:(XMPPJID *)jid;
 8 //请求联系人的名片，如果数据库有就不请求，没有就发送名片请求
 9 - (void)fetchvCardTempForJID:(XMPPJID *)jid ignoreStorage:(BOOL)ignoreStorage;
10 //获取联系人的名片，如果数据库有就返回，没有返回空，并到服务器上抓取
11 - (XMPPvCardTemp *)vCardTempForJID:(XMPPJID *)jid shouldFetch:(BOOL)shouldFetch;
12 //更新自己的名片信息
13 - (void)updateMyvCardTemp:(XMPPvCardTemp *)vCardTemp;
14 //获取到一盒联系人的名片信息的回调
15 - (void)xmppvCardTempModule:(XMPPvCardTempModule *)vCardTempModule
16         didReceivevCardTemp:(XMPPvCardTemp *)vCardTemp
17                      forJID:(XMPPJID *)jid

3.2添加好友

1     //name为用户账号
2     - (void)XMPPAddFriendSubscribe:(NSString *)name
3     {
4         //XMPPHOST 就是服务器名，  主机名
5         XMPPJID *jid = [XMPPJID jidWithString:[NSString stringWithFormat:@"%@@%@",name,XMPPHOST]];
6         //[presence addAttributeWithName:@"subscription" stringValue:@"好友"];
7         [xmppRoster subscribePresenceToUser:jid];
8 
9     }

3.3收到添加好友的请求

 1     - (void)xmppRoster:(XMPPRoster *)sender didReceivePresenceSubscriptionRequest:(XMPPPresence *)presence
 2     {
 3         //取得好友状态
 4         NSString *presenceType = [NSString stringWithFormat:@"%@", [presence type]]; //online/offline
 5         //请求的用户
 6         NSString *presenceFromUser =[NSString stringWithFormat:@"%@", [[presence from] user]];
 7         NSLog(@"presenceType:%@",presenceType);
 8 
 9         NSLog(@"presence2:%@  sender2:%@",presence,sender);
10 
11         XMPPJID *jid = [XMPPJID jidWithString:presenceFromUser];
12         //接收添加好友请求
13         [xmppRoster acceptPresenceSubscriptionRequestFrom:jid andAddToRoster:YES];
14 
15     }

3.4删除好友

1 //删除好友，name为好友账号
2 - (void)removeBuddy:(NSString *)name  
3 {  
4     XMPPJID *jid = [XMPPJID jidWithString:[NSString stringWithFormat:@"%@@%@",name,XMPPHOST]];  
5 
6     [self xmppRoster] removeUser:jid];  
7 }

4. 聊天室
初始化聊天室

1     XMPPJID *roomJID = [XMPPJID jidWithString:ROOM_JID];
2 
3     xmppRoom = [[XMPPRoom alloc] initWithRoomStorage:self jid:roomJID];
4 
5     [xmppRoom activate:xmppStream];
6     [xmppRoom addDelegate:self delegateQueue:dispatch_get_main_queue()];

创建聊天室成功

    - (void)xmppRoomDidCreate:(XMPPRoom *)sender
    {
        DDLogInfo(@"%@: %@", THIS_FILE, THIS_METHOD);
    }

加入聊天室，使用昵称

 
    [xmppRoom joinRoomUsingNickname:@"quack" history:nil];

获取聊天室信息

1     - (void)xmppRoomDidJoin:(XMPPRoom *)sender
2     {
3         [xmppRoom fetchConfigurationForm];
4         [xmppRoom fetchBanList];
5         [xmppRoom fetchMembersList];
6         [xmppRoom fetchModeratorsList];
7     }

如果房间存在，会调用委托
// 收到禁止名单列表

- (void)xmppRoom:(XMPPRoom *)sender didFetchBanList:(NSArray *)items;

// 收到好友名单列表

- (void)xmppRoom:(XMPPRoom *)sender didFetchMembersList:(NSArray *)items;

// 收到主持人名单列表

- (void)xmppRoom:(XMPPRoom *)sender didFetchModeratorsList:(NSArray *)items;

房间不存在，调用委托

- (void)xmppRoom:(XMPPRoom *)sender didNotFetchBanList:(XMPPIQ *)iqError;
- (void)xmppRoom:(XMPPRoom *)sender didNotFetchMembersList:(XMPPIQ *)iqError;
- (void)xmppRoom:(XMPPRoom *)sender didNotFetchModeratorsList:(XMPPIQ *)iqError;

离开房间

[xmppRoom deactivate:xmppStream];

XMPPRoomDelegate的其他代理方法:

离开聊天室

1     - (void)xmppRoomDidLeave:(XMPPRoom *)sender
2     {
3         DDLogVerbose(@"%@: %@", THIS_FILE, THIS_METHOD);
4     }

新人加入群聊

1     - (void)xmppRoom:(XMPPRoom *)sender occupantDidJoin:(XMPPJID *)occupantJID
2     {
3         DDLogVerbose(@"%@: %@", THIS_FILE, THIS_METHOD);
4     }

有人退出群聊

1     - (void)xmppRoom:(XMPPRoom *)sender occupantDidLeave:(XMPPJID *)occupantJID
2     {
3         DDLogVerbose(@"%@: %@", THIS_FILE, THIS_METHOD);
4     }

有人在群里发言

1     - (void)xmppRoom:(XMPPRoom *)sender didReceiveMessage:(XMPPMessage *)message fromOccupant:(XMPPJID *)occupantJID
2     {
3         DDLogVerbose(@"%@: %@", THIS_FILE, THIS_METHOD);
4     }

5. 消息回执
这个是XEP－0184协议的内容
发送消息时附加回执请求
代码实现

1     NSString *siID = [XMPPStream generateUUID];
2     //发送消息
3     XMPPMessage *message = [XMPPMessage messageWithType:@"chat" to:jid elementID:siID];
4     NSXMLElement *receipt = [NSXMLElement elementWithName:@"request" xmlns:@"urn:xmpp:receipts"];
5     [message addChild:receipt];
6     [message addBody:@"测试"];
7     [self.xmppStream sendElement:message];

收到回执请求的消息，发送回执

代码实现

 1     - (void)xmppStream:(XMPPStream *)sender didReceiveMessage:(XMPPMessage *)message
 2     {
 3         //回执判断
 4         NSXMLElement *request = [message elementForName:@"request"];
 5         if (request)
 6         {
 7             if ([request.xmlns isEqualToString:@"urn:xmpp:receipts"])//消息回执
 8             {
 9                 //组装消息回执
10                 XMPPMessage *msg = [XMPPMessage messageWithType:[message attributeStringValueForName:@"type"] to:message.from elementID:[message attributeStringValueForName:@"id"]];
11                 NSXMLElement *recieved = [NSXMLElement elementWithName:@"received" xmlns:@"urn:xmpp:receipts"];
12                 [msg addChild:recieved];
13 
14                 //发送回执
15                 [self.xmppStream sendElement:msg];
16             }
17         }else
18         {
19             NSXMLElement *received = [message elementForName:@"received"];
20             if (received)
21             {
22                 if ([received.xmlns isEqualToString:@"urn:xmpp:receipts"])//消息回执
23                 {
24                     //发送成功
25                     NSLog(@"message send success!");
26                 }  
27             }  
28         }  
29 
30         //消息处理  
31         //...  
32     }

6. 添加AutoPing

为了监听服务器是否有效，增加心跳监听。用XEP-0199协议，在XMPPFrameWork框架下，封装了 XMPPAutoPing 和 XMPPPing两个类都可以使用，因为XMPPAutoPing已经组合进了XMPPPing类，所以XMPPAutoPing使用起来更方便。

 1 //初始化并启动ping
 2 -(void)autoPingProxyServer:(NSString*)strProxyServer
 3 {
 4     _xmppAutoPing = [[XMPPAutoPingalloc] init];
 5     [_xmppAutoPingactivate:_xmppStream];
 6     [_xmppAutoPingaddDelegate:selfdelegateQueue:  dispatch_get_main_queue()];
 7     _xmppAutoPing.respondsToQueries = YES;
 8     _xmppAutoPing.pingInterval=2;//ping 间隔时间
 9     if (nil != strProxyServer)
10     {
11        _xmppAutoPing.targetJID = [XMPPJID jidWithString: strProxyServer ];//设置ping目标服务器，如果为nil,则监听socketstream当前连接上的那个服务器
12     }
13 }
14 //卸载监听
15  [_xmppAutoPing   deactivate];
16   [_xmppAutoPing   removeDelegate:self];
17    _xmppAutoPing = nil;
18 //ping XMPPAutoPingDelegate的委托方法:
19 - (void)xmppAutoPingDidSendPing:(XMPPAutoPing *)sender
20 {
21     NSLog(@"- (void)xmppAutoPingDidSendPing:(XMPPAutoPing *)sender");
22 }
23 - (void)xmppAutoPingDidReceivePong:(XMPPAutoPing *)sender
24 {
25     NSLog(@"- (void)xmppAutoPingDidReceivePong:(XMPPAutoPing *)sender");
26 }
27 
28 - (void)xmppAutoPingDidTimeout:(XMPPAutoPing *)sender
29 {
30     NSLog(@"- (void)xmppAutoPingDidTimeout:(XMPPAutoPing *)sender");
31 }

iOS开发——项目实战技术OC篇&XMPP简单总结

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原文地址：http://www.cnblogs.com/iCocos/p/4822662.html

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