Question

在我的应用中，我实现了创建XMPPRoom并邀请用户。现在，我正在寻找一种方法来存储这些组（我创建的组或我被邀请的组），以便我可以在我想要的时候轻松地将其恢复到我的应用程序中。我遇到了书签XEP-0048但是，我找不到任何在线使用这个的例子。以前有人用过吗？你能分享一些例子吗？

http://www.xmpp.org/extensions/attic/xep-0048-1.0.html

艾哈迈德

Answer 1

根据XEP-0048: Bookmarks，要将书签上传到服务器，您必须发送iq这样的请求：

<iq from='juliet@capulet.lit/balcony' type='set' id='pip1'>
  <pubsub xmlns='http://jabber.org/protocol/pubsub'>
    <publish node='storage:bookmarks'>
      <item id='current'>
        <storage xmlns='storage:bookmarks'>
          <conference name='The Play&apos;s the Thing' 
                      autojoin='true'
                      jid='theplay@conference.shakespeare.lit'>
            <nick>JC</nick>
          </conference>
        </storage>
      </item>
    </publish>
    <publish-options>
      <x xmlns='jabber:x:data' type='submit'>
        <field var='FORM_TYPE' type='hidden'>
          <value>http://jabber.org/protocol/pubsub#publish-options</value>
        </field>
        <field var='pubsub#persist_items'>
          <value>true</value>
        </field>
        <field var='pubsub#access_model'>
          <value>whitelist</value>
        </field>
      </x>
    </publish-options>
  </pubsub>
</iq>

在使用NSXMLElement类的Objective-C中，上面的XML可以写成：

    NSXMLElement *pubsub = [[NSXMLElement alloc] initWithName:@"pubsub" xmlns:@"http://jabber.org/protocol/pubsub"];
    NSXMLElement *publish = [[NSXMLElement alloc] initWithName:@"publish"];
    [publish addAttributeWithName:@"node" stringValue:@"storage:bookmarks"];
    NSXMLElement *item = [[NSXMLElement alloc] initWithName:@"item"];
    [item addAttributeWithName:@"id" stringValue:@"current"];
    NSXMLElement *storage = [[NSXMLElement alloc] initWithName:@"storage" xmlns:@"storage:bookmarks"];
    NSXMLElement *conference = [[NSXMLElement alloc] initWithName:@"conference"];
    [conference addAttributeWithName:@"name" stringValue:@"The Play&apos;s the Thing"];
    [conference addAttributeWithName:@"autojoin" stringValue:@"true"];
    [conference addAttributeWithName:@"jid" stringValue:@"theplay@conference.shakespeare.lit"];
    NSXMLElement *nick = [[NSXMLElement alloc] initWithName:@"nick" stringValue:@"JC"];
    [conference addChild:nick];
    [storage addChild:conference];
    [item addChild:storage];
    [publish addChild:item];

    NSXMLElement *publish_options = [[NSXMLElement alloc] initWithName:@"publish-options"];
    NSXMLElement *x = [[NSXMLElement alloc] initWithName:@"x" xmlns:@"jabber:x:data"];
    [x addAttributeWithName:@"type" stringValue:@"submit"];
    NSXMLElement *field1 = [[NSXMLElement alloc] initWithName:@"field"];
    [field1 addAttributeWithName:@"var" stringValue:@"FORM_TYPE"];
    [field1 addAttributeWithName:@"type" stringValue:@"hidden"];
    NSXMLElement *value1 = [[NSXMLElement alloc] initWithName:@"value" stringValue:@"http://jabber.org/protocol/pubsub#publish-options"];
    [field1 addChild:value1];
    [x addChild:field1];
    NSXMLElement *field2 = [[NSXMLElement alloc] initWithName:@"field"];
    [field2 addAttributeWithName:@"var" stringValue:@"pubsub#persist_items"];
    NSXMLElement *value2 = [[NSXMLElement alloc] initWithName:@"value" stringValue:@"whitelist"];
    [field2 addChild:value2];
    [x addChild:field2];
    [publish_options addChild:x];

    [pubsub addChild:publish];
    [pubsub addChild:publish_options];

    XMPPIQ *iq = [[XMPPIQ alloc] initWithType:@"set" child:pubsub];
    [iq addAttributeWithName:@"from" stringValue:@"juliet@capulet.lit/balcony"];
    [iq addAttributeWithName:@"id" stringValue:@"pip1"];

当然它只能用一个NSXMLElement编写，比如

NSXMLElement *iq = [NSXMLElement alloc] initWithName:@"iq" stringValue:[NSString stringWithFormat:@"all xml code from first paragraph with %@ to add your dynamic data...", data1, data2, ...];
[iq addAttributeWithName:@"from" stringValue:@"juliet@capulet.lit/balcony"];
[iq addAttributeWithName:@"id" stringValue:@"pip1"];

创建iq后，是时候将其发送到服务器，如

[xmppStream sendElement:iq];

这就是书签发送到服务器的方式。您在XMPPStream委托- (BOOL)xmppStream:(XMPPStream *)sender didReceiveIQ:(XMPPIQ *)iq中侦听服务器响应，服务器响应应该是这样的：

<iq to='juliet@capulet.lit/balcony' type='result' id='pip1'/>

或在objective-c代码中：

- (BOOL)xmppStream:(XMPPStream *)sender didReceiveIQ:(XMPPIQ *)iq
{
    if([iq isResultIQ])
    {
        if([[iq attributeStringValueForName:@"id"] isEqualToString:@"pip1"])
        {
            NSLog(@"Bookmarks with id %@ succesfully uploaded", [iq attributeStringValueForName:@"id"]);
        }
    }
}

现在，基于上面的示例，为xml创建Objective-c代码，clinet从服务器请求书签（XEP-0048: Bookmarks 3.3 Retrieving Data）：

<iq from='juliet@capulet.lit/randomID' type='get' id='retrieve1'>
  <pubsub xmlns='http://jabber.org/protocol/pubsub'>
    <items node='storage:bookmarks'/>
  </pubsub>
</iq>

objective-c代码：

NSXMLElement *pubsub = [[NSXMLElement alloc] initWithName:@"pubsub" xmlns:@"http://jabber.org/protocol/pubsub"];
NSXMLElement *items = [[NSXMLElement alloc] initWithName:@"items"];
[items addAttributeWithName:@"node" stringValue:@"storage:bookmarks"];
[pubsub addChild:items];

XMPPIQ *iq = [[XMPPIQ alloc] initWithType:@"get" child:pubsub];
[iq addAttributeWithName:@"from" stringValue:@"juliet@capulet.lit/balcony"];
[iq addAttributeWithName:@"id" stringValue:@"retrive1"];

像以前一样将它发送到服务器：

[xmppStream sendElement:iq];

并像以前一样监听服务器响应：

<iq type='result'
    to='juliet@capulet.lit/randomID'
    id='retrieve1'>
  <pubsub xmlns='http://jabber.org/protocol/pubsub'>
    <items node='storage:bookmarks'>
      <item id='current'>
        <storage xmlns='storage:bookmarks'>
          <conference name='The Play&apos;s the Thing' 
                      autojoin='true'
                      jid='theplay@conference.shakespeare.lit'>
            <nick>JC</nick>
          </conference>
        </storage>
      </item>
    </items>
  </pubsub>
</iq>

或objective-c代码：

- (BOOL)xmppStream:(XMPPStream *)sender didReceiveIQ:(XMPPIQ *)iq
{

    if([iq isResultIQ])
    {
        if([[iq attributeStringValueForName:@"id"] isEqualToString:@"retrive1"])
        {
            NSXMLElement *pubsub = [iq elementForName:@"pubsub"];
            NSArray *items = [pubsub elementsForName:@"items"];

            NSLog(@"Bookmarks for id %@ are: %@", [iq attributeStringValueForName:@"id"], items);
        }
    }
}

Answer 2

每当您创建一个组或接受聊天室邀请时，请使用必要的信息将该组存储到本地数据库。退出组时从数据库中删除它。

Answer 3

从jabber服务器获取用户组。

  XMPPIQ *iq = [[XMPPIQ alloc]init];
    [iq addAttributeWithName:@"type" stringValue:@"get"];
    NSString *from = [NSString stringWithFormat:@"%@/ResouseName",[[AppDelegate instance] xmppStream].myJID.bare];
    [iq addAttributeWithName:@"from" stringValue:from];
    NSXMLElement *query =[NSXMLElement elementWithName:@"query" xmlns:@"jabber:iq:private"];
    NSXMLElement *storage =   [NSXMLElement elementWithName:@"storage" xmlns:@"storage:bookmarks"];
    [query addChild:storage];
    [iq addChild:query];
    [xmppStream sendElement:iq];

Answer 4

你很容易这样做。请试试这个。您可以使用此方法添加到服务器中的书签。

-(void)bookMark :(NSString *)roomName{ 

  XMPPIQ *iq = [[XMPPIQ alloc]init];
 [iq addAttributeWithName:@"type" stringValue:@"set"];
NSString *from = [NSString stringWithFormat:@"%@/ResouseName",[[AppDelegate instance] xmppStream].myJID.bare];
[iq addAttributeWithName:@"from" stringValue: from];    
 NSXMLElement *query =[NSXMLElement elementWithName:@"query" xmlns:@"jabber:iq:private"];
 NSXMLElement *storage =   [NSXMLElement elementWithName:@"storage" xmlns:@"storage:bookmarks"];
NSXMLElement *conference_s = [NSXMLElement elementWithName:@"conference"];
[conference_s addAttributeWithName:@"autojoin" stringValue:@"true"];
[conference_s addAttributeWithName:@"jid" stringValue:roomName];    
[storage addChild:conference_s];
[query addChild:storage];
[iq addChild:query];    
NSLog(@"print eml log %@:",iq);
[xmppStream sendElement:iq];
}

Answer 5

最后，您可以获得您的小组列表。

- (BOOL)xmppStream:(XMPPStream *)sender didReceiveIQ:(XMPPIQ *)iq {

NSXMLElement *pubsub = [iq elementForName:@"query"];

NSXMLElement *storage = [pubsub elementForName:@"storage"];

 NSArray *conferenceName = [storage elementsForName:@"conference"];
for (NSXMLElement *conference in conferenceName) {
    NSString *jid = [[conference attributeForName:@"jid"]stringValue];
     NSLog(@"print conference jid=====%@",jid);

}
 NSLog(@"Bookmarks for id are: %@", conferenceName);

XMPPFramework - XEP-0048：书签存储

5 个答案: