我正在修改一个用ASP/C构建的站点,其中一个任务是添加2个RSS提要的显示—一个来自站点的内部博客,另一个来自站点的Twitter帐户。然而,我似乎不断地从这两个站点得到空的feed,即使我已经确认我指向了feed的正确URL。我的代码如下所示。
private void GetTwitterRSS()
{
IEnumerable items = Cache["TwitterFeed"] as List<SyndicationItem>;
if (items == null)
{
try
{
SyndicationFeed blogFeed = SyndicationFeed.Load(XmlReader.Create("http://twitter.com/statuses/user_timeline/84668697.rss"));
items = blogFeed.Items;
}
catch
{
items = new List<SyndicationItem>();
}
Cache.Insert("TwitterFeed", items, null, DateTime.Now.AddMinutes(5.0),TimeSpan.Zero);
twitterrssRepeater.DataSource = items;
twitterrssRepeater.DataBind();
}
}
private void GetBlogRSS()
{
IEnumerable items = Cache["BlogFeed"] as List<SyndicationItem>;
if (items == null)
{
try
{
SyndicationFeed blogFeed = SyndicationFeed.Load(XmlReader.Create("http://www.rentseeker.ca/blog/?feed=rss2"));
items = blogFeed.Items;
}
catch
{
items = new List<SyndicationItem>();
}
Cache.Insert("BlogFeed", items, null, DateTime.Now.AddHours(1.0),TimeSpan.Zero);
blogrssRepeater.DataSource = items;
blogrssRepeater.DataBind();
}
}
protected string DisplayBlogFeedItem(SyndicationItem item)
{
return string.Format(@"<p>{1}</p><p><strong>{2}</strong></p><p>{3}</p>",
FormatPublishDate(item.PublishDate.DateTime),
item.Title.Text,
item.Summary.Text);
}
protected string DisplayTwitterFeedItem(SyndicationItem item)
{
return string.Format(@"<li>{1}</li>",
item.Title.Text);
}
页面上的代码是:
<ul>
<asp:ListView ID="twitterrssRepeater" runat="server">
<ItemTemplate>
<%# DisplayTwitterFeedItem((Container as ListViewDataItem).DataItem as System.ServiceModel.Syndication.SyndicationItem) %>
</ItemTemplate>
</asp:ListView>
</ul>
和
<asp:ListView ID="blogrssRepeater" runat="server">
<ItemTemplate>
<%# DisplayBlogFeedItem((Container as ListViewDataItem).DataItem as System.ServiceModel.Syndication.SyndicationItem) %>
</ItemTemplate>
</asp:ListView>
很明显,我遗漏了什么。从我所读到的内容来看,我理解为了查看Twitter feed,我应该对自己进行身份验证——我有凭据,但不知道如何在加载SyndicationFeed时将它们传递给SyndicationFeed。