[英]SyndicationFeed - can't read url, error row and position
我在SyndicationFeed上遇到了一些问题,该问题引发了一个我无法弄清的异常,一直在寻找答案。 尝试了其他用户建议的大多数解决方案,但没有运气。 这是代码。
// the feed that will throw Exception.
var stream = "http://www.gamespot.com/feeds/news/";
try
{
var settings = new XmlReaderSettings()
{
ProhibitDtd = false,
IgnoreComments = true
};
using (XmlReader xmlReader = XmlReader.Create(stream, settings))
{
xmlReader.Read();
var t = 0;
var rss = new Rss20FeedFormatter();
var atom = new Atom10FeedFormatter();
_feed = new SyndicationFeed();
// the problem is here when i try to load to
// the feed with xmlReader, for some reason the
//feed can't read the xmlReader. getting row and
//position error.
if (atom.CanRead(xmlReader))
{
_feed = SyndicationFeed.Load(xmlReader);
}
else if (rss.CanRead(xmlReader))
{
_feed = SyndicationFeed.Load(xmlReader);
}
xmlReader.Close();
}
}
catch (Exception ex)
{
var message = ex.Message;
}
类似的问题,我真的需要某种打击。
提前谢谢了。
问题出在缓存节点中,请在解析之前将其删除。
var stream = "http://www.gamespot.com/feeds/news/";
try
{
var settings = new XmlReaderSettings()
{
ProhibitDtd = false,
IgnoreComments = true,
IgnoreWhitespace=true
};
string xml = new WebClient().DownloadString(stream);
XDocument doc = XDocument.Parse(xml);
doc.Descendants().Where(e => e.Name == "cache").Remove();
using (Stream memoryStream = new MemoryStream()) // Create a stream
{
doc.Save(memoryStream); // Save XDocument into the stream
memoryStream.Position = 0; // Rewind the stream ready to read from it elsewhere
using (XmlReader xmlReader = XmlReader.Create(memoryStream, settings))
{
xmlReader.Read();
var rss = new Rss20FeedFormatter();
var atom = new Atom10FeedFormatter();
var _feed = new SyndicationFeed();
// the problem is here when i try to load to
// the feed with xmlReader, for some reason the
//feed can't read the xmlReader. getting row and
//position error.
if (atom.CanRead(xmlReader))
{
_feed = SyndicationFeed.Load(xmlReader);
}
else if (rss.CanRead(xmlReader))
{
_feed = SyndicationFeed.Load(xmlReader);
}
xmlReader.Close();
}
}
}
catch (Exception ex)
{
var message = ex.Message;
}
对我来说,此解决方案有效的答案。
public XmlReader CleanXdocument(XmlReader xmlReader)
{
var xdoc = new XDocument();
xdoc = XDocument.Load(xmlReader);
if (xdoc.Descendants("cache").Any())
{
xdoc.Descendants().FirstOrDefault(e => e.Name == "cache").Remove();
}
var str = xdoc.ToString();
TextReader tr = new StringReader(str);
xmlReader =XmlReader.Create(tr);
return xmlReader;
}
也许不是最好的方法,但是它可以工作。 非常感谢亚历山大为我的问题提供的提示和解决方案。
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