我为来自xmpp的每条消息获取以下xml格式
- (void)xmppStream:(XMPPStream *)sender didReceiveMessage:(XMPPMessage *)message
{
NSLog(@"Message %@",message);
}
在控制台中打印
<message
xmlns="jabber:client" from="[email protected]" to="[email protected]/mobile">
<result
xmlns="urn:xmpp:mam:tmp" id="1483781596098940">
<forwarded
xmlns="urn:xmpp:forward:0">
<message
xmlns="jabber:client" from="[email protected]/mobile" to="[email protected]" type="chat">
<body>Hi</body>
<delay
xmlns="urn:xmpp:delay" from="xmpp-dev.peeks.com" stamp="2016-12-22T04:50:17.023Z">Offline Storage
</delay>
</message>
<delay
xmlns="urn:xmpp:delay" from="xmpp-dev.peeks.com" stamp="2017-01-07T09:33:16.099Z">
</delay>
</forwarded>
</result>
</message>
我想从每条消息中获取“from”，“to”，“body”和“stamp”，我做了以下操作
NSXMLElement *body = message;
NSXMLElement *messageb = [body elementForName:@"result" xmlns:@"urn:xmpp:mam:tmp"];
NSXMLElement *forwa=[messageb elementForName:@"forwarded" xmlns:@"urn:xmpp:forward:0"];
NSXMLElement *msg=[forwa elementForName:@"message" xmlns:@"jabber:client"];
NSXMLElement *TD=[forwa elementForName:@"delay" xmlns:@"urn:xmpp:delay"];
NSString *from=[[msg elementForName:@"from" xmlns:@"jabber:client"] stringValue];
NSString *to=[[msg elementForName:@"to" xmlns:@"jabber:client"] stringValue];
NSString *bodyq=[[msg elementForName:@"body"] stringValue];
NSString *stmp=[[TD elementForName:@"stamp" xmlns:@"urn:xmpp:delay"] stringValue];
NSString *final=[NSString stringWithFormat:@"From: %@\nTo: %@\nBody: %@\nStamp: %@",from,to,bodyq,stmp];
NSLog(@"forwa %@", final);
我只能打印邮件正文和日志打印
From: (null)
To: (null)
Body: hi
Stamp: (null)
修复搜索属性：元素是节点（如Body，Result等），而其他元素只是以前元素的属性。
NSString *from=[[msg attributeForName:@"from"] stringValue];
NSString *to=[[msg attributeForName:@"to"] stringValue];
NSString *stmp=[[TD attributeForName:@"stamp"] stringValue];
编辑（对不起，我上次与ObjectiveC合作的时候真的很老了）。
xml namespace它是关于element而不是attributes。
如果你没有再次尝试，请尝试通过NSXMLNode
NSXMLNode *fromNode = [msg attributeForName:@"from"];
NSString *from = [fromNode stringValue];
对于快速5：
func xmppStream(_ sender: XMPPStream, didReceive message: XMPPMessage) {
if let msg = message.body {
if let from = message.attribute(forName: "from")?.stringValue{
print("msg: \(msg), \(from)")
}
}
}