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這篇文章將為大家詳細講解有關解析rss問題的示例分析，小編覺得挺實用的，因此分享給大家做個參考，希望大家閱讀完這篇文章后可以有所收獲。
try{
org.dom4j.io.SAXReader saxReader = new org.dom4j.io.SAXReader();
org.dom4j.Document document = saxReader.read(rssUrl);
org.dom4j.Element channel = (org.dom4j.Element) document.getRootElement().element("channel");
int index =0;
for (java.util.Iterator i = channel.elementIterator("item"); i.hasNext();){
if(index+1>rssTable.Rows.length){
break;
}
org.dom4j.Element element = (org.dom4j.Element) i.next();
String title = element.elementText("title");
String link = element.elementText("link");
String pubDate = element.elementText("pubDate");
String source = element.elementText("source");
ci.adp.DataRow rssRow = rssTable.getDataRowByIndex(index);
rssRow.setValue("TITLE", title);
rssRow.setValue("LINK", link);
rssRow.setValue("PUBDATE", pubDate);
rssRow.setValue("SOURCE", source);
/*
System.out.println("title標題: " + title);
System.out.println("link鏈接: " + link);
System.out.println("pubDate發布時間: " +pubDate);
System.out.println("source來源: " + source);
*/
index++;
}
}catch (Exception e) {
e.printStackTrace();
}折騰了一上午，終于換一種方式搞定了。
上面這種dom4j方式，在我本機環境（windows+weblogic10+jdk1.6）下沒問題，
放到服務器上（linux5.4 x64+weblogic10+jdk1.6）上，始終都報這個錯：
[oracle@ablw010215 bin]$ Warning: Caught exception attempting to use SAX to load a SAX XMLReader Warning: Exception was: java.lang.ClassCastException: com.sun.org.apache.xerces.internal.parsers.XIncludeAwareParserConfiguration Warning: I will print the stack trace then carry on using the default SAX parser java.lang.ClassCastException: com.sun.org.apache.xerces.internal.parsers.XIncludeAwareParserConfiguration at org.xml.sax.helpers.XMLReaderFactory.loadClass(XMLReaderFactory.java:199) at org.xml.sax.helpers.XMLReaderFactory.createXMLReader(XMLReaderFactory.java:150) at org.dom4j.io.SAXHelper.createXMLReader(SAXHelper.java:83) at org.dom4j.io.SAXReader.createXMLReader(SAXReader.java:894) at org.dom4j.io.SAXReader.getXMLReader(SAXReader.java:715) at org.dom4j.io.SAXReader.read(SAXReader.java:435) at org.dom4j.io.SAXReader.read(SAXReader.java:321) at jsp_servlet._ajax._comm._bbs.__iframearticlecontent._jspService(__iframearticlecontent.java:100) at weblogic.servlet.jsp.JspBase.service(JspBase.java:35) at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227) at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125) at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300) at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:27) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:57) at ci.filter.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:107) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:57) at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3715) at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3681) at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321) at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120) at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2277) at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2183) at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1454) at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209) at weblogic.work.ExecuteThread.run(ExecuteThread.java:178) org.dom4j.DocumentException: SAX2 driver class weblogic.xml.jaxp.RegistryXMLReader does not implement XMLReader Nested exception: SAX2 driver class weblogic.xml.jaxp.RegistryXMLReader does not implement XMLReader at org.dom4j.io.SAXReader.read(SAXReader.java:484) at org.dom4j.io.SAXReader.read(SAXReader.java:321) at jsp_servlet._ajax._comm._bbs.__iframearticlecontent._jspService(__iframearticlecontent.java:99) at weblogic.servlet.jsp.JspBase.service(JspBase.java:35) at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227) at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125) at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300) at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:27) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:57) at ci.filter.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:107) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:57) at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3715) at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3681) at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321) at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120) at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2277) at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2183) at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1454) at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209) at weblogic.work.ExecuteThread.run(ExecuteThread.java:178) Nested exception: java.lang.ClassCastException: com.sun.org.apache.xerces.internal.parsers.XIncludeAwareParserConfiguration at org.dom4j.io.SAXHelper.createXMLReader(SAXHelper.java:98) at org.dom4j.io.SAXReader.createXMLReader(SAXReader.java:894) at org.dom4j.io.SAXReader.getXMLReader(SAXReader.java:715) at org.dom4j.io.SAXReader.read(SAXReader.java:435) at org.dom4j.io.SAXReader.read(SAXReader.java:321) at jsp_servlet._ajax._comm._bbs.__iframearticlecontent._jspService(__iframearticlecontent.java:100) at weblogic.servlet.jsp.JspBase.service(JspBase.java:35) at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227) at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125) at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300) at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:27) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:57) at ci.filter.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:107) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:57) at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3715) at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3681) at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321) at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120) at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2277) at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2183) at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1454) at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209) at weblogic.work.ExecuteThread.run(ExecuteThread.java:178) Nested exception: java.lang.ClassCastException: com.sun.org.apache.xerces.internal.parsers.XIncludeAwareParserConfiguration at org.dom4j.io.SAXHelper.createXMLReader(SAXHelper.java:98) at org.dom4j.io.SAXReader.createXMLReader(SAXReader.java:894) at org.dom4j.io.SAXReader.getXMLReader(SAXReader.java:715) at org.dom4j.io.SAXReader.read(SAXReader.java:435) at org.dom4j.io.SAXReader.read(SAXReader.java:321) at jsp_servlet._ajax._comm._bbs.__iframearticlecontent._jspService(__iframearticlecontent.java:100) at weblogic.servlet.jsp.JspBase.service(JspBase.java:35) at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227) at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125) at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300) at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:27) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:57) at ci.filter.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:107) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:57) at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3715) at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3681) at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321) at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120) at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2277) at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2183) at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1454) at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209) at weblogic.work.ExecuteThread.run(ExecuteThread.java:178)
<2012-11-8 上午10時56分08秒 CST> <Warning> <Socket> <BEA-000449> <Closing socket as no data read from it on 10.16.99.18:53,874 during the configured idle timeout of 5 secs>
<2012-11-8 上午10時56分08秒 CST> <Warning> <Socket> <BEA-000449> <Closing socket as no data read from it on 10.16.99.18:53,875 during the configured idle timeout of 5 secs>
在weblogic.xml加配置文件、加lib包等等都不起作用，換成這個就好了（依賴lib在我上傳的資源中，完全免費）：
try { URL url = new URL(rss); // 讀取Rss源 XmlReader reader = new XmlReader(url); System.out.println("Rss源的編碼格式為：" + reader.getEncoding()); SyndFeedInput input = new SyndFeedInput(); SyndFeed feed = input.build(reader); // 得到SyndFeed對象，即得到Rss源里的所有信息 List entries
= feed.getEntries(); // 得到Rss新聞中子項列表 int index =0; for (int i = 0; i < entries.size(); i++) { // 循環得到每個子項信息 if(index+1>rssTable.Rows.length){ break; } SyndEntry entry = (SyndEntry) entries.get(i); /* System.out.println("標題：" + entry.getTitle()); System.out.println("連接地址："
+ entry.getLink()); SyndContent description = entry.getDescription(); System.out.println("標題簡介：" + description.getValue()); System.out.println("發布時間：" + entry.getPublishedDate()); // 以下是Rss源可先的幾個部分 System.out.println("標題的作者：" + entry.getAuthor()); */ ci.adp.DataRow
rssRow = rssTable.getDataRowByIndex(index); rssRow.setValue("TITLE", entry.getTitle()); rssRow.setValue("LINK", entry.getLink()); rssRow.setValue("PUBDATE", entry.getPublishedDate()); rssRow.setValue("SOURCE", entry.getAuthor()); /* // 此標題所屬的范疇 List categoryList
= entry.getCategories(); if (categoryList != null) { for (int m = 0; m < categoryList.size(); m++) { SyndCategory category = (SyndCategory) categoryList .get(m); System.out.println("此標題所屬的范疇：" + category.getName()); } } */ index++; /* // 得到流媒體播放文件的信息列表 List
enclosureList = entry.getEnclosures(); if (enclosureList != null) { for (int n = 0; n < enclosureList.size(); n++) { SyndEnclosure enclosure = (SyndEnclosure) enclosureList .get(n); System.out.println("流媒體播放文件：" + entry.getEnclosures()); } } */ } } catch (Exception
e) { e.printStackTrace(); }org.dom4j.io.SAXReader saxReader = new org.dom4j.io.SAXReader();org.dom4j.Document document = saxReader.read(rssUrl);org.dom4j.Element channel = (org.dom4j.Element) document.getRootElement().element("channel"); int index =0; for (java.util.Iterator i = channel.elementIterator("item");
i.hasNext();){ if(index+1>rssTable.Rows.length){ break; } org.dom4j.Element element = (org.dom4j.Element) i.next(); String title = element.elementText("title"); String link = element.elementText("link"); String pubDate = element.elementText("pubDate"); String
source = element.elementText("source"); ci.adp.DataRow rssRow = rssTable.getDataRowByIndex(index); rssRow.setValue("TITLE", title); rssRow.setValue("LINK", link); rssRow.setValue("PUBDATE", pubDate); rssRow.setValue("SOURCE", source); /* System.out.println("title標題:
" + title); System.out.println("link鏈接: " + link); System.out.println("pubDate發布時間: " +pubDate); System.out.println("source來源: " + source); */ index++; }關于“解析rss問題的示例分析”這篇文章就分享到這里了，希望以上內容可以對大家有一定的幫助，使各位可以學到更多知識，如果覺得文章不錯，請把它分享出去讓更多的人看到。
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