我不确定如何使用XMPPFramework的核心数据来存储收到的消息。有没有关于如何做这个的教程？我看到了User对象，可以有许多“资源”。每个接收到的消息都应该是我创建和持久化的一个新资源吗?
我不知道消息历史记录的哪部分是我的责任，哪部分是框架提供的。我可以拦截每个传入的消息。那么我是否应该使用核心数据在一个Messages表内创建和存储每个消息？我会有一个Message实体。然后每个XMPP用户都会有一个Message对象的数组。但那样我不就是在自己开发一个解决方案，这违反了该框架的原则吗?
谢谢！
我知道这是一个旧的帖子，但是由于我目前正在iOS上使用XMPP，所以必须说XMPP内置了消息存档支持。
我下载了iOS的XMPP框架，在其中有一个标记为XEP-0136的文件夹。在XCode中导入文件夹，并通过在实例化XMPP客户端的类中使用以下代码来激活客户端侧的归档功能：
xmppMessageArchivingStorage = [XMPPMessageArchivingCoreDataStorage sharedInstance];
xmppMessageArchivingModule = [[XMPPMessageArchiving alloc] initWithMessageArchivingStorage:xmppMessageArchivingStorage];
下面这行代码可以帮助你避免向XMPP服务器发送特定于存档的部分，因为服务器很可能会回复“service-not-implemented”。
[xmppMessageArchivingModule setClientSideMessageArchivingOnly:YES];
[xmppMessageArchivingModule activate:xmppStream];
[xmppMessageArchivingModule addDelegate:self delegateQueue:dispatch_get_main_queue()];
完成了。从那一刻起，消息（发送和接收）将被存储在框架创建的表中。
如果您需要更多信息，请评论，我会回复您。
@PraviJay
我是这样做的：
-(void)testMessageArchiving{
XMPPMessageArchivingCoreDataStorage *storage = [XMPPMessageArchivingCoreDataStorage sharedInstance];
NSManagedObjectContext *moc = [storage mainThreadManagedObjectContext];
NSEntityDescription *entityDescription = [NSEntityDescription entityForName:@"XMPPMessageArchiving_Message_CoreDataObject"
inManagedObjectContext:moc];
NSFetchRequest *request = [[NSFetchRequest alloc]init];
[request setEntity:entityDescription];
NSError *error;
NSArray *messages = [moc executeFetchRequest:request error:&error];
[self print:[[NSMutableArray alloc]initWithArray:messages]];
}
-(void)print:(NSMutableArray*)messages{
@autoreleasepool {
for (XMPPMessageArchiving_Message_CoreDataObject *message in messages) {
NSLog(@"messageStr param is %@",message.messageStr);
NSXMLElement *element = [[NSXMLElement alloc] initWithXMLString:message.messageStr error:nil];
NSLog(@"to param is %@",[element attributeStringValueForName:@"to"]);
NSLog(@"NSCore object id param is %@",message.objectID);
NSLog(@"bareJid param is %@",message.bareJid);
NSLog(@"bareJidStr param is %@",message.bareJidStr);
NSLog(@"body param is %@",message.body);
NSLog(@"timestamp param is %@",message.timestamp);
NSLog(@"outgoing param is %d",[message.outgoing intValue]);
}
}
}
希望这有所帮助 :)
表明XMPP框架不保存历史记录的回复是不正确的。
要将结果集成到表格视图中，请使用：
XMPPMessageArchivingCoreDataStorage *storage = [XMPPMessageArchivingCoreDataStorage sharedInstance];
NSManagedObjectContext *moc = [storage mainThreadManagedObjectContext];
NSEntityDescription *entityDescription = [NSEntityDescription entityForName:@"XMPPMessageArchiving_Contact_CoreDataObject"
inManagedObjectContext:moc];
NSFetchRequest *request = [[NSFetchRequest alloc]init];
[request setEntity:entityDescription];
_contactsController = [[NSFetchedResultsController alloc] initWithFetchRequest:request managedObjectContext:moc sectionNameKeyPath:nil cacheName:@"MessagesContactListCache"];
NSError *error;
BOOL rval = [_contactsController performFetch:&error];
一个在 Swift 4 中获取归档消息的示例
声明并初始化变量 XMPPMessageArchivingCoreDataStorage，其中我初始化了 XMPPStream
var xmppMessageStorage: XMPPMessageArchivingCoreDataStorage?
var xmppMessageArchiving: XMPPMessageArchiving?
xmppMessageStorage = XMPPMessageArchivingCoreDataStorage.sharedInstance()
xmppMessageArchiving = XMPPMessageArchiving(messageArchivingStorage: xmppMessageStorage)
xmppMessageArchiving?.clientSideMessageArchivingOnly = true
xmppMessageArchiving?.activate(stream)
xmppMessageArchiving?.addDelegate(self, delegateQueue: DispatchQueue.main)
通过这样做，每当一条消息到达时，它将被归档，无需进行其他操作。
然后，要检索已归档的消息
func RecibedMessageArchiving(idFriend: String) {
let JabberIDFriend = idFriend //id friend chat, example test1@example.com
let moc = xmppMessageStorage?.mainThreadManagedObjectContext
let entityDescription = NSEntityDescription.entity(forEntityName: "XMPPMessageArchiving_Message_CoreDataObject", in: moc!)
let request = NSFetchRequest<NSFetchRequestResult>()
let predicateFormat = "bareJidStr like %@ "
let predicate = NSPredicate(format: predicateFormat, JabberIDFriend)
request.predicate = predicate
request.entity = entityDescription
//jabberID id del usuario, cliente
var jabberIDCliente = ""
if let jabberj = globalChat.value(forKey: "jabberID"){
jabberIDCliente = jabberj as! String
}
do {
let results = try moc?.fetch(request)
for message: XMPPMessageArchiving_Message_CoreDataObject? in results as? [XMPPMessageArchiving_Message_CoreDataObject?] ?? [] {
var element: DDXMLElement!
do {
element = try DDXMLElement(xmlString: (message as AnyObject).messageStr)
} catch _ {
element = nil
}
let body: String
let sender: String
let date: NSDate
let isIncomings: Bool
if message?.body != nil {
body = (message?.body)!
} else {
body = ""
}
if element.attributeStringValue(forName: "to") == JabberIDFriend {
sender = jabberIDCliente
isIncomings = false
} else {
sender = "test2@example.com"
isIncomings = true
}
var m: [AnyHashable : Any] = [:]
m["msg"] = message?.body
print("body", message?.body)
print("test", element.attributeStringValue(forName: "to"))
print("test2", element.attributeStringValue(forName: "body"))
}
} catch _ {
//catch fetch error here
}
}
XMPPFramework不会存储消息记录，我建议您最好使用Core Data。创建一个表格，将发送者、接收者、消息和时间作为列。在调用“发送消息”和“接收消息”方法时插入记录...
-(void)saveChatHistory:(NSString *)sender:(NSString*)receiver:(NSString*)message:(NSString*)time
{
NSManagedObjectContext *context=[[self appDelegate] managedObjectContext];
NSManagedObject *newContext=[NSEntityDescription insertNewObjectForEntityForName:@"ChatHistory" inManagedObjectContext:context];
[newContext setValue:sender forKey:@"sender"];
[newContext setValue:receiver forKey:@"receiver"];
[newContext setValue:message forKey:@"message"];
[newContext setValue:time forKey:@"time"];
NSError *error;
if(![context save:&error])
{
UIAlertView *alertView=[[UIAlertView alloc] initWithTitle:@"Error Occured" message:@"Data is not Stored in Database Try Again" delegate:self cancelButtonTitle:@"ok" otherButtonTitles:nil];
[alertView show];
}
}
从表视图中选择特定用户时检索聊天记录...以下方法显示如何检索聊天记录...并从didSelectRowAtIndexPath方法调用此方法，并将目标ID作为参数传递
-(void)getChatHistory:(NSString*)jidString1
{
NSManagedObjectContext *context=[[self appDelegate] managedObjectContext];
NSEntityDescription *entity=[NSEntityDescription entityForName:@"ChatHistory" inManagedObjectContext:context];
NSFetchRequest *req=[[NSFetchRequest alloc] init];
NSPredicate *predicate=[NSPredicate predicateWithFormat:@"receiver=%@",jidString1];
[req setEntity:entity];
[req setPredicate:predicate];
NSManagedObject *matchRecords=nil;
NSError *error;
NSArray *objects=[context executeFetchRequest:req error:&error];
if([objects count]==0)
{
UIAlertView *alertView=[[UIAlertView alloc] initWithTitle:@"No Record found" message:@"there is no previous chat history" delegate:self cancelButtonTitle:@"ok" otherButtonTitles:nil];
[alertView show];
}
else
{
for(int i=0;i<[objects count];i++)
{
matchRecords=[objects objectAtIndex:i ];
NSLog(@"sender is %@",[matchRecords valueForKey:@"sender"]);
NSLog(@"reciver is %@",[matchRecords valueForKey:@"receiver"]);
NSLog(@"messages is %@",[matchRecords valueForKey:@"message"]);
NSLog(@"time is %@",[matchRecords valueForKey:@"time"]);
}
}
}
我希望这对你有用