说明：在即时通信系列XMPP之搭建本地服务器中阐述了通过XAMPP、Openfire工具搭建基于XMPP的服务器端，并使用spark软件进行XMPP客户端的调试。在本文中主要阐述将XMPP添加到工程中，实现iOS中基于XMPP的即时通信。
项目环境配置
使用CocoaPods导入XMPP框架，如果不会CocoaPods，点击CocoaPods安装及使用教程，或者手动导入XMPP框架。
创建XMPP管理类
为了让XMPP不会对工程中其它业务代码具有侵入性，方便我们管理整个关于XMPP的逻辑处理，通常会采用单例模式新建一个专门的管理类，为此，在工程中创建一个继承自NSObject的XMPPManger，为了能够在代码中方便调用XMPPStreamDelegate的方法，让其遵守XMPPStreamDelegate协议。
XMPP框架中所有的连接、登入、注册、授权、失去连接等操作的回调都是通过XMPPStream来管理，所以XMPPManger必须有一个XMPPStream实例。其它的还包括进行添加好友、删除好友、获取好友列表等功能的XMPPRoster；消息保存组件XMPPMessageArchiving等。
XMPPManager.h
@interface XMPPManager : NSObject<XMPPStreamDelegate>
/**
* 创建全局唯一的管理者对象
* @return 返回一个单例对象
*/
+ (XMPPManager *)sharedXMPPManager;
/**
* 信息管道
*/
@property (nonatomic,strong)XMPPStream *stream;
/**
* 进行添加好友 删除好友 获取好友列表等功能
*/
@property (nonatomic,strong)XMPPRoster *roster;
/**
* 消息保存组件
*/
@property (nonatomic,strong)XMPPMessageArchiving *messageArchiving;
/**
* 消息保存组件的CoreData上下文
*/
@property (nonatomic,strong)NSManagedObjectContext *managerObjectContext;
/**
* 登入
*
* @param userName 账户
* @param password 密码
*/
- (void)loginWithUserName:(NSString *)userName password:(NSString *)password;
/**
* 注册
*
* @param userName 账户
* @param password 密码
*/
- (void)registWithUserName:(NSString *)userName password:(NSString *)password;
@end
XMPPManager.m
//服务器的地址
static NSString *const kHostName = @"127.0.0.1";
//端口号
static UInt16 const kHostPort = 5222;
//连接服务器类型
typedef NS_ENUM(NSUInteger,ConnectToServerStatus) {
ConnectToServerStatusLogin,
ConnectToServerStatusRegist,
};
@interface XMPPManager ()
//登入密码
@property (nonatomic,strong)NSString *loginpassword;
//注册密码
@property (nonatomic,strong)NSString *registpassword;
//是登入还是注册
@property (nonatomic,assign)ConnectToServerStatus connectToSercerStatus;
@end
@implementation XMPPManager
+ (XMPPManager *)sharedXMPPManager{
static XMPPManager *xmppManager = nil;
static dispatch_once_t token;
dispatch_once(&token, ^{
xmppManager = [[XMPPManager alloc] init];
});
return xmppManager;
}
- (instancetype)init{
if ([super init]) {
//设置通信管道属性
self.stream = [[XMPPStream alloc] init];
self.stream.hostName = kHostName;
self.stream.hostPort = kHostPort;
//设置当前对象为stream的代理
[self.stream addDelegate:self delegateQueue:dispatch_get_main_queue()];
//进行好友存储
XMPPRosterCoreDataStorage *rosterStorage = [XMPPRosterCoreDataStorage sharedInstance];
self.roster = [[XMPPRoster alloc] initWithRosterStorage:rosterStorage dispatchQueue:dispatch_get_main_queue()];
//激活
[self.roster activate:self.stream];
//进行聊天信息存储
XMPPMessageArchivingCoreDataStorage *messageArchivingStorage = [XMPPMessageArchivingCoreDataStorage sharedInstance];
self.messageArchiving = [[XMPPMessageArchiving alloc] initWithMessageArchivingStorage:messageArchivingStorage dispatchQueue:dispatch_get_main_queue()];
[self.messageArchiving activate:self.stream];
self.managerObjectContext = messageArchivingStorage.mainThreadManagedObjectContext;
}
return self;
}
//与服务器建立链接
-(void)connectToServerWithUser:(NSString *)user{
//要是正在链接的话那么就先断开连接
if ([self.stream isConnected]) {
[self disconnectServer];
}
XMPPJID *jid = [XMPPJID jidWithUser:user domain:@"DH_Fantasy" resource:@"iPhone"];
self.stream.myJID = jid;
NSError *error = nil;
[self.stream connectWithTimeout:30.0f error:&error];
if (nil != error) {
NSLog(@"%s__%d__链接出错：%@",__FUNCTION__,__LINE__,error);
}
}
//与服务器断开链接
-(void)disconnectServer{
[self.stream disconnect];
}
//登入
- (void)loginWithUserName:(NSString *)userName password:(NSString *)password{
self.connectToSercerStatus = ConnectToServerStatusLogin;
self.loginpassword = password;//将传进来的password传给self.password
[self connectToServerWithUser:userName];
}
//注册
- (void)registWithUserName:(NSString *)userName password:(NSString *)password{
self.connectToSercerStatus = ConnectToServerStatusRegist;
self.registpassword = password;
[self connectToServerWithUser:userName];
}
#pragma mark XMPPStreamDelegate
//与服务器链接成功
-(void)xmppStreamDidConnect:(XMPPStream *)sender{
#pragma mark 判断与服务器建立连接是登陆还是注册
switch (self.connectToSercerStatus) {
case ConnectToServerStatusLogin:
{
NSError *error = nil;
[self.stream authenticateWithPassword:self.loginpassword error:&error];
if (nil != error) {
NSLog(@"%s__%d__验证出错：%@",__FUNCTION__,__LINE__,error);
}
break;
}
case ConnectToServerStatusRegist:
{
NSError *err = nil;
[self.stream registerWithPassword:self.registpassword error:&err];
if (nil != err) {
NSLog(@"%s__%d__注册出错：%@",__FUNCTION__,__LINE__,err);
}
break;
}
default:
break;
}
}
//与服务器链接失败
-(void)xmppStreamConnectDidTimeout:(XMPPStream *)sender{
NSLog(@"😂与服务器链接失败");
}
- (void)xmppStreamWillConnect:(XMPPStream *)sender {
NSLog(@"🔌socket正在连接...");
}
- (void)xmppStream:(XMPPStream *)sender socketDidConnect:(GCDAsyncSocket *)socket {
NSLog(@"🍎socket连接成功");
// 连接成功之后，由客户端xmpp发送一个stream包给服务器，服务器监听来自客户端的stream包，并返回stream feature包
}
- (void)xmppStream:(XMPPStream *)sender didNotAuthenticate:(NSXMLElement *)error {
NSLog(@"😂xmpp授权失败:%@", error.description);
}
- (void)xmppStreamDidAuthenticate:(XMPPStream *)sender {
NSLog(@"🍎xmpp授权成功。");
// 只有进入到这里，才算是真正的可以聊天了
}
- (void)xmppStreamDidDisconnect:(XMPPStream *)sender withError:(NSError *)error {
NSLog(@"😂xmpp失去连接。");
}
@end
AppDelegate
在AppDelegate中主要设置了下进入APP时的登入状态，在一些场景中，某些控制器必须为登入状态才能进入，用NSUserDefaults存储为Bool类型，这为判断是否登入提供了方便。
AppDelegate.m
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
//设置主窗口并显示
self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
self.window.backgroundColor = [UIColor whiteColor];
[self.window makeKeyAndVisible];
//设置进入APP为没登入状态
[[NSUserDefaults standardUserDefaults] setBool:NO forKey:@"isLoginStatus"];
[[NSUserDefaults standardUserDefaults] synchronize];
//设置好友列表控制器为根视图
RosterTableViewController *VC = [[RosterTableViewController alloc] init];
UINavigationController *NC = [[UINavigationController alloc] initWithRootViewController:VC];
self.window.rootViewController = NC;
return YES;
}
RosterTableViewController
RosterTableViewController主要作用就是进行自动登入与显示获取到的好友。
RosterTableViewController.m
@interface RosterTableViewController ()
//用于保存获取到的好友
@property (nonatomic,strong)NSMutableArray *rosterArray;
@end
@implementation RosterTableViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.title = @"好友列表";
self.rosterArray = [[NSMutableArray alloc] init];
//判断之前是否登入过
if (nil != [[NSUserDefaults standardUserDefaults]objectForKey:@"userName"]) {
//之前登入过，直接读取用户名和密码进行连接
NSString *userName = [[NSUserDefaults standardUserDefaults]objectForKey:@"userName"];
NSString *password = [[NSUserDefaults standardUserDefaults]objectForKey:@"password"];
[[XMPPManager sharedXMPPManager]loginWithUserName:userName password:password];
[[XMPPManager sharedXMPPManager].stream addDelegate:self delegateQueue:dispatch_get_main_queue()];
}else{
//之前没登入过则进入到登入窗口
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
LoginViewController *loginVC = [storyboard instantiateViewControllerWithIdentifier:@"login"];
[self.navigationController pushViewController:loginVC animated:YES];
}
[[XMPPManager sharedXMPPManager].roster addDelegate:self delegateQueue:dispatch_get_main_queue()];
}
#pragma mark UITableViewDataSource
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return self.rosterArray.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell"];
if (!cell) {
cell = [[UITableViewCell alloc] initWithStyle:(UITableViewCellStyleDefault) reuseIdentifier:@"cell"];
}
XMPPJID *jid = self.rosterArray[indexPath.row];
cell.textLabel.text = jid.user;
return cell;
}
#pragma mark 进入聊天界面
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
XMPPJID *jid = self.rosterArray[indexPath.row];
ChatViewController *chat = [[ChatViewController alloc] init];
chat.chatToJid = jid;
[self.navigationController pushViewController:chat animated:YES];
}
#pragma mark XMPPStreamDelegate
//授权成功
- (void)xmppStreamDidAuthenticate:(XMPPStream *)sender{
[[NSUserDefaults standardUserDefaults] setBool:YES forKey:@"isLoginStatus"];
[[NSUserDefaults standardUserDefaults] synchronize];
//我们验证之后默认的状态是离线的 于是我们想显示在线，需要告诉服务器自己的状态
XMPPPresence *presence = [XMPPPresence presenceWithType:@"available"];
[[XMPPManager sharedXMPPManager].stream sendElement:presence];
}
//验证失败
-(void)xmppStream:(XMPPStream *)sender didNotAuthenticate:(DDXMLElement *)error{
NSLog(@"登入验证失败😂");
}
#pragma mark XMPPRosterDelegate
//刚开始获取好友列表
-(void)xmppRosterDidBeginPopulating:(XMPPRoster *)sender{
NSLog(@"开始获取好友列表");
}
//正在获取好友列表
-(void)xmppRoster:(XMPPRoster *)sender didReceiveRosterItem:(DDXMLElement *)item{
NSLog(@"正在获取好友列表...%@",item);
NSString *jidStr = [[item attributeForName:@"jid"]stringValue];
XMPPJID *jid =[XMPPJID jidWithString:jidStr];
[self.rosterArray addObject:jid];
//将数据添加进数组
[self.tableView insertRowsAtIndexPaths:@[[NSIndexPath indexPathForRow:self.rosterArray.count-1 inSection:0]] withRowAnimation:UITableViewRowAnimationLeft];
}
//已经完成好友列表获取
-(void)xmppRosterDidEndPopulating:(XMPPRoster *)sender{
NSLog(@"已经完成好友列表获取🍅");
}
Friends List.png
LoginViewController
LoginViewController中使用XMPPManager单例在登入按钮的点击事件中调用- (void)loginWithUserName:(NSString ***)userName password:(NSString *)password;方法进行登入。
LoginViewController.m
@interface LoginViewController ()
//登入账户
@property (weak, nonatomic) IBOutlet UITextField *userName;
//登入密码
@property (weak, nonatomic) IBOutlet UITextField *password;
@end
@implementation LoginViewController
- (void)viewDidLoad {
[super viewDidLoad];
[[XMPPManager sharedXMPPManager].stream addDelegate:self delegateQueue:dispatch_get_main_queue()];
}
//登入操作
- (IBAction)loginAction:(id)sender {
[[XMPPManager sharedXMPPManager] loginWithUserName:self.userName.text password:self.password.text];
}
#pragma mark XMPPStreamDelegte
//验证成功
- (void)xmppStreamDidAuthenticate:(XMPPStream *)sender{
//存储账户密码用于下次自动登入
[[NSUserDefaults standardUserDefaults] setObject:self.userName.text forKey:@"userName"];
[[NSUserDefaults standardUserDefaults] setObject:self.password.text forKey:@"password"];
//改变APP的登入状态
[[NSUserDefaults standardUserDefaults] setBool:YES forKey:@"isLoginStatus"];
[[NSUserDefaults standardUserDefaults] synchronize];
//验证之后默认的状态为离线，需要手动告诉服务器自己的状态
XMPPPresence *presence = [XMPPPresence presenceWithType:@"available"];
[[XMPPManager sharedXMPPManager].stream sendElement:presence];
//返回到根视图
[self.navigationController popToRootViewControllerAnimated:YES];
}
//验证失败
-(void)xmppStream:(XMPPStream *)sender didNotAuthenticate:(DDXMLElement *)error{
NSLog(@"登入验证失败😂");
}
LoginViewController.png
RegisterViewController
注册和登入比较相似，只需在注册按钮的点击事件中使用XMPPManager单例调用- (void)registWithUserName:(NSString *)userName password:(NSString *)password;方法进行注册。
RegisterViewController.m
@interface RegisterViewController ()
//注册账户
@property (weak, nonatomic) IBOutlet UITextField *userName;
//注册密码
@property (weak, nonatomic) IBOutlet UITextField *password;
//密码验证
@property (weak, nonatomic) IBOutlet UITextField *rePassword;
@end
@implementation RegisterViewController
- (void)viewDidLoad {
[super viewDidLoad];
[[XMPPManager sharedXMPPManager].stream addDelegate:self delegateQueue:dispatch_get_main_queue()];
}
- (IBAction)registerAction:(id)sender {
//简单验证：用户名不为空且密码和密码验证输入一致
if (![self.userName.text isEqualToString:@""] && [self.rePassword.text isEqualToString:self.password.text]) {
[[XMPPManager sharedXMPPManager] registWithUserName:self.userName.text password:self.password.text];
}else{
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"注册失败" message:@"" preferredStyle:(UIAlertControllerStyleAlert)];
if ([self.userName.text isEqualToString:@""]) {
alertController.title = @"账户为空";
alertController.message = @"请输入账户";
}
if (![self.rePassword.text isEqualToString:self.password.text]) {
alertController.title = @"密码验证错误";
alertController.message = @"请重新输入密码验证";
}
UIAlertAction *okAction = [UIAlertAction actionWithTitle:@"OK" style:(UIAlertActionStyleCancel) handler:^(UIAlertAction * _Nonnull action) {
[alertController dismissViewControllerAnimated:YES completion:nil];
}];
[alertController addAction:okAction];
[self presentViewController:alertController animated:YES completion:nil];
}
}
#pragma mark--XMPPStreamDelegate
//注册成功
-(void)xmppStreamDidRegister:(XMPPStream *)sender{
NSLog(@"%s__%d__注册成功",__FUNCTION__,__LINE__);
//存储账户密码用于下次自动登入
[[NSUserDefaults standardUserDefaults] setObject:self.userName.text forKey:@"userName"];
[[NSUserDefaults standardUserDefaults] setObject:self.password.text forKey:@"password"];
//改变APP的登入状态
[[NSUserDefaults standardUserDefaults] setBool:YES forKey:@"isLoginStatus"];
[[NSUserDefaults standardUserDefaults] synchronize];
//验证之后默认的状态为离线，需要手动告诉服务器自己的状态
XMPPPresence *presence = [XMPPPresence presenceWithType:@"available"];
[[XMPPManager sharedXMPPManager].stream sendElement:presence];
//注册成功之后返回到登陆界面
[self.navigationController popToRootViewControllerAnimated:YES];
}
//注册失败
-(void)xmppStream:(XMPPStream *)sender didNotRegister:(DDXMLElement *)error{
NSLog(@"%s__%d__注册失败%@",__FUNCTION__,__LINE__,error);
}
RegisterViewController.png
ChatViewController
在ChatViewController中需要公开一个属性，用来接收好友列表页面传来的XMPPJID。
ChatViewController.h
@interface ChatViewController : UIViewController
@property (nonatomic,strong)XMPPJID *chatToJid;
@end
ChatViewController.m
@interface ChatViewController ()<UITableViewDataSource,UITableViewDelegate>
//显示消息
@property (weak, nonatomic) IBOutlet UITableView *messageContent;
//消息输入框
@property (weak, nonatomic) IBOutlet UITextView *messageTextView;
//键盘底部约束
@property (weak, nonatomic) IBOutlet NSLayoutConstraint *messageTextfieldConstraint;
//存储消息数据
@property (nonatomic,strong) NSMutableArray *allMessageArray;
@end
@implementation ChatViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.messageTextView.text = @"";
self.messageContent.delegate = self;
self.messageContent.dataSource = self;
self.allMessageArray = [[NSMutableArray alloc] init];
//将历史消息加入到数组
[self.allMessageArray addObjectsFromArray:[self fromDataBaseFetchResult]];
//监听键盘frame的改变
[[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(kbFrameWillChange:) name:UIKeyboardWillChangeFrameNotification object:nil];
[[XMPPManager sharedXMPPManager].stream addDelegate:self delegateQueue:dispatch_get_main_queue()];
[self reloadMessage];
self.messageContent.separatorStyle = UITableViewCellSeparatorStyleNone;
}
//消息发送按钮
- (IBAction)sendMessageAction:(id)sender {
XMPPMessage *message = [XMPPMessage messageWithType:@"chat" to:self.chatToJid];
//要发送的消息添加到Body
[message addBody:self.messageTextView.text];
//发送消息
[[XMPPManager sharedXMPPManager].stream sendElement:message];
}
//键盘即将改变frame
- (void)kbFrameWillChange:(NSNotification *)noti{
//获取窗口的高度
CGFloat windowH = [UIScreen mainScreen].bounds.size.height;
//键盘结束的frm
CGRect kbEndFrm = [noti.userInfo [UIKeyboardFrameEndUserInfoKey]CGRectValue];
//键盘结束的y值
CGFloat kbEndY = kbEndFrm.origin.y;
self.messageTextfieldConstraint.constant = windowH - kbEndY;
[self scrollsToBottomAnimated:YES];
}
- (void)scrollsToBottomAnimated:(BOOL)animated{
CGFloat offset = self.messageContent.contentSize.height - self.messageTextfieldConstraint.constant - 55;
if (offset > 0){
[self.messageContent setContentOffset:CGPointMake(0, offset) animated:animated];
}
}
#pragma mark XMPPStreamDelegate
//发送信息成功
-(void)xmppStream:(XMPPStream *)sender didSendMessage:(XMPPMessage *)message{
NSLog(@"发送成功🍅");
[self reloadMessage];//发送信息时刷新一次页面
}
//发送信息失败
-(void)xmppStream:(XMPPStream *)sender didFailToSendMessage:(XMPPMessage *)message error:(NSError *)error{
NSLog(@"发送失败⚠️");
}
//收到信息
-(void)xmppStream:(XMPPStream *)sender didReceiveMessage:(XMPPMessage *)message{
NSLog(@"收到消息%@",message);
if ([message isChatMessageWithBody]) {
[self reloadMessage];//收到信息是刷新一次页面
}
}
#pragma mark 加载聊天信息
-(void)reloadMessage{
//从数据库读取数据
NSArray *fetchedObjects = [self fromDataBaseFetchResult];
// 清空消息数组里的所有数据
[self.allMessageArray removeAllObjects];
// 将新的聊天记录添加到数组中
[self.allMessageArray addObjectsFromArray:fetchedObjects];
//将信息加载到tableView上
[self.messageContent reloadData];
//加载时滚动到最底部
[self scrollToBottomWithAnimated:YES];
}
//从数据库读取数据
- (NSArray *)fromDataBaseFetchResult{
//1.上下文
NSManagedObjectContext *managerObjectContext =[XMPPManager sharedXMPPManager].managerObjectContext;
//2.创建查询请求
NSFetchRequest *fetchRequest = [NSFetchRequest fetchRequestWithEntityName:@"XMPPMessageArchiving_Message_CoreDataObject"];
//3.设置过滤条件(提取当前用户jid,好友jid)
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"bareJidStr == %@ And streamBareJidStr == %@", self.chatToJid.bare,[XMPPManager sharedXMPPManager].stream.myJID.bare];
fetchRequest.predicate = predicate;
//4.设置排序(时间升序)
NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"timestamp" ascending:YES];
fetchRequest.sortDescriptors = @[sortDescriptor];
//5.执行请求
NSError *error = nil;
NSArray *fetchedResult = [managerObjectContext executeFetchRequest:fetchRequest error:&error];
return fetchedResult;
}
//滚动到最底部
- (void)scrollToBottomWithAnimated:(BOOL)animated{
if (animated && [self.messageContent numberOfSections] > 0) {
NSInteger lastSectionIndex = [self.messageContent numberOfSections] - 1;
NSInteger lastRowIndex = [self.messageContent numberOfRowsInSection:lastSectionIndex] - 1;
if (lastRowIndex > 0) {
NSIndexPath *lastIndexPath = [NSIndexPath indexPathForRow:lastRowIndex inSection:lastSectionIndex];
[self.messageContent scrollToRowAtIndexPath:lastIndexPath atScrollPosition: UITableViewScrollPositionBottom animated:animated];
}
}
}
#pragma mark UITableViewDataSourceDelegate
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
return self.allMessageArray.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell"];
if (nil == cell) {
cell = [[UITableViewCell alloc] initWithStyle:(UITableViewCellStyleValue1) reuseIdentifier:@"cell"];
}
XMPPMessageArchiving_Message_CoreDataObject *chatMessage = self.allMessageArray[indexPath.row];
//判断聊天信息是发出去的 还是接受进来的，在cell上显示不一样的样式
if (chatMessage.isOutgoing == YES) {
cell.detailTextLabel.text = chatMessage.body;
cell.textLabel.text = @"";
} else {
cell.textLabel.text = chatMessage.body;
cell.detailTextLabel.text = @"";
}
self.messageTextView.text = @"";
return cell;
}
Use Test_XMPP And Spark Chat.png
以上就是将XMPP添加到工程，实现基于XMPP的登入、注册、聊天功能，还有一大批别的功能有待探索，之后将进行持续的更新。
总结
1.XMPP框架中所有的连接、登入、注册、授权、失去连接等操作的回调都是通过XMPPStream来管理；
2.使用XMPP开发即时通信，大部分功能都是通过回调XMPPStreamDelegate协议中的方法来实现。
联系作者：简书·DH_Fantasy 新浪微博·DH_Fantasy
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