使用touchXML解析``RSS提要标签
问题描述:
我有以下RSS提要,我试图使用touchXML解析iphone应用程序。使用touchXML解析`<media:content>`RSS提要标签
<rss version="2.0" xmlns:media="http://search.yahoo.com/mrss/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:ext="http://ooyala.com/syndication/ext/" xmlns:mediasl="http://www.slide.com/funspace/developer/" xmlns:itunes="http://www.itunes.com/dtds/podcast-1.0.dtd" xmlns:boxee="http://boxee.tv/spec/rss/">
<channel>
<title>Channel Title</title>
<description>Channel Description</description>
<link>link</link>
<item>
<title>title</title>
<guid isPermaLink="false">k2dDRpMTpto4kdpU_NhGmNGKRK0Ny0PH</guid>
<pubDate>Fri, 25 Jun 2010 06:53:48 +0000</pubDate>
<media:title>title</media:title>
<media:keywords>Others</media:keywords>
<media:category scheme="http://www.ooyala.com">/JBay10</media:category>
<media:category scheme="http://www.ooyala.com">/JBay10/Webisodes</media:category>
<media:thumbnail url="http://ak.c.ooyala.com/k2dDRpMTpto4kdpU_NhGmNGKRK0Ny0PH/BqcWmm1bH0zjWgL35lMDoxOjBrO7OBB8" width="640" height="360"/>
<dcterms:valid>start=2010-06-25T06:53+00:00;scheme=W3C-DTF</dcterms:valid>
<media:group>
<media:content url="http://api.ooyala.com/syndication/stream_redirect?pcode=N2d2U6Azh1SxAcZeoJia-srBQAtY&expires=1277743230&streamID=2678810&signature=beZ2o45XNredayqbtIzzL7khsnt1EEjwByf0yMgSEv8&size=20985109&length=163280" type="video/mp4" medium="video" expression="full" bitrate="900" framerate="25.0" samplingrate="32.0" duration="163" lang="en"/>
</media:group>
</item>
...
</channel>
我遇到的问题是,我不能在<media:content>
访问<media:...>
标签特别的URL。我正在使用以下方法解析rss提要的代码。
-(NSMutableArray *) grabXMLFeed:(NSString *)feedAddress{
NSURL *url = [NSURL URLWithString: feedAddress];
CXMLDocument *rssParser = [[[CXMLDocument alloc] initWithContentsOfURL:url options:0 error:nil] autorelease];
NSArray *resultNodes = NULL;
resultNodes = [rssParser nodesForXPath:@"//item" error:nil];
NSMutableArray *videos = [[NSMutableArray alloc] init];
for (CXMLElement *resultElement in resultNodes) {
int counter;
NSMutableDictionary *video = [[NSMutableDictionary alloc] init];
for(counter = 0; counter < [resultElement childCount]; counter++) {
NSString *val = [[resultElement childAtIndex:counter] stringValue];
if ([val length] != 0) {
[video setObject:[[resultElement childAtIndex:counter] stringValue] forKey:[[resultElement childAtIndex:counter] name]];
}
}
[videos addObject:[video copy]];
[video release];
}
return videos;
}
我能做些什么来获取存储在<media:content>
的url?
感谢
答
使用touchXML可以解析标签,如<media:content>
,<media:group>
,等...通过使用:
media:title -> title
media:keywords -> keywords
答
变化后到来的标签的一部分
resultNodes = [rssParser nodesForXPath:@“// item”error:nil];
到
resultNodes = [rssParser nodesForXPath:@ “// * [本地名称()= '项目']” 错误:无];
+0
如何解析来自此解析器的XSD架构SOAP XML,因为它返回null – user366584 2012-01-03 10:14:50
嗨;)这是一个名称空间数据。我不确定,但是在TouchXML的google代码页上,他们提到了命名空间支持的路线图:http://code.google.com/p/touchcode/wiki/TouchXML – rogeriopvl 2010-06-28 17:29:02
为什么不使用NSXMLParser? – Warrior 2010-06-28 17:58:05
好吧,我会那样做的。 – ametade 2010-06-29 10:44:46