我不确定如何使用 XMPPFramework 的核心数据来存储传入消息。有没有人有任何关于如何做到这一点的教程？我看到用户对象，它又可以有很多“资源”。收到的每条消息都应该是我创建并保留的新资源吗？
我不知道哪一部分是我的职责，以及框架提供的关于消息历史的哪一部分。我可以拦截每条传入的消息。那么我应该使用核心数据在 Messages 表中创建和存储每条消息吗？ 我会有一个消息实体。每个 XMPPUser 都会有一个 Message 对象数组。但是，我不会推出自己的解决方案，这将与框架相悖吗？
谢谢！
【问题讨论】：
标签： iphone ios core-data storage xmppframework
我知道这是一个旧线程，但由于我目前在 iOS 上使用 XMPP，我必须说在 XMPP 中内置了对归档消息的支持。
我下载了适用于 iOS 的 XMPP 框架，其中有一个标记为 XEP-0136 的文件夹。在您实例化 XMPP 客户端的类中使用以下代码行导入 XCode 中的文件夹并激活客户端归档：
xmppMessageArchivingStorage = [XMPPMessageArchivingCoreDataStorage sharedInstance];
xmppMessageArchivingModule = [[XMPPMessageArchiving alloc] initWithMessageArchivingStorage:xmppMessageArchivingStorage];
下面的一行代码使您免于将存档特定节发送到 xmpp 服务器 很可能会以未实现的服务响应
[xmppMessageArchivingModule setClientSideMessageArchivingOnly:YES];
[xmppMessageArchivingModule activate:xmppStream];
[xmppMessageArchivingModule addDelegate:self delegateQueue:dispatch_get_main_queue()];
你已经准备好了。从那一刻起，消息（传出和传入）将存储在框架创建的表中。
如果您需要更多信息，请发表评论，我会尽快回复您。
@PraviJay
我确实喜欢这样：
-(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]);
}
}
}
希望对你有帮助:)
【讨论】：
表示 XMPP Framework 不保存历史记录的响应不正确。
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];
【讨论】：
在 Swift 4 中获取存档消息的示例
声明并初始化变量 XMPPMessageArchivingCoreDataStorage 我在其中初始化 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)
这样做，每当消息到达时，这将导致它被归档而无需执行任何其他操作。
然后，检索归档的消息
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
}
}
【讨论】：
XMPPFramework不存储消息历史，所以我建议你最好使用核心数据。以发送者，接收者，消息，时间为列创建表。发送消息方法调用和接收消息方法调用时插入记录...
-(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];
}
}
当特定用户从 tableview 中选择时检索聊天历史......休闲方法展示了如何检索聊天历史......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"]);
}
}
}
希望对你有用
【讨论】：