在经历了很多挫折之后,我来到这里寻求帮助。我使用org.simpleframework.xml来解析Android中的RSS提要。当我尝试解析xml文件时,我得到以下错误:
org.simpleframework.xml.core.PersistenceException: Element 'link' is already used with @org.simpleframework.xml.Element(data=false, name=, required=true, type=void) on field 'link'
这是我试图解析的xml示例:
<?xml version="1.0" encoding="utf-8" ?>
<rss version="2.0" xml:base="http://www.somelink.com/" xmlns:atom="http://www.w3.org/2005/Atom">
<channel>
<title>My Title</title>
<description>Latest breaking news, sport, weather and opinion, from South Africa, Africa and the world.</description>
<link>http://www.somelink.com/</link>
<atom:link rel="self" href="http://www.someotherlink.com" />
</channel>
</rss>
这些是我在代码中使用的类和注释:
@Root(name = "rss")
@Namespace(reference = "http://www.w3.org/2005/Atom", prefix = "atom")
public class NewsFeed
{
@Version(revision = 2.0)
private float version;
@Attribute
private String base;
@Element
private Channel channel;
}
@Root(name = "channel")
public class Channel
{
@Element
private String title;
@Element
private String description;
@Element
private String link;
@Element
@Namespace(reference = "http://www.w3.org/2005/Atom", prefix = "atom")
private Link rssLink;
@ElementList(inline = true)
private List<NewsItem> newsItems;
}
@Root(name = "link")
public class Link
{
@Attribute
private String rel;
@Attribute
private String href;
public String getRel()
{
return rel;
}
public void setRel(String rel)
{
this.rel = rel;
}
public String getHref()
{
return href;
}
public void setHref(String href)
{
this.href = href;
}
}
我创建了Link类,以便可以使用原子名称空间。从错误中可以看到,库似乎没有考虑到名称空间,这就是为什么它抱怨已经使用了link元素。我做错了什么?非常感谢您的帮助。
我面临同样的问题,似乎link
和atom:link
即使在不同的命名空间中也被视为相同的条目,它们需要合并到一个List<Link> rssLink
列表。
这是我的kotlin模型代码解析rss提要,它工作得很好:
@Root(name = "rss", strict = false)
data class RssFeed(
@field:Element(name = "channel")
var channel: RssChannel = RssChannel()
)
@NamespaceList(
Namespace(prefix = "atom", reference = "http://www.w3.org/2005/Atom")
)
@Root(name = "channel", strict = false)
data class RssChannel(
@field:Element var title: String = "",
@field:Element var description: String = "",
@field:Element var generator: String = "",
@field:Element var lastBuildDate: String = "",
@field:ElementList(entry = "link", required = false, inline = true)
var links: List<RssLink> = ArrayList(),
@field:ElementList(inline = true)
var items: List<RssItem> = ArrayList()
)
@Root(name = "item", strict = false)
data class RssItem(
@field:Element
var title: String = "",
@field:Element
var pubDate: String = "",
@field:Element
var link: String = "",
@field:Element(required = false)
var description: String = "",
@field:Element
var guid: String = ""
)
@Root(name = "link", strict = false)
data class RssLink(
// for <link>http://www.somelink.com/</link>
@field:Text(required = false) var text: String = "",
// for <atom:link rel="self" href="http://www.someotherlink.com" />
@field:Attribute(required = false) var rel: String = "",
@field:Attribute(required = false, name = "type") var contentType: String = "",
@field:Attribute(required = false) var href: String = ""
)
你也可以点击这里查看