(原创)用dom4j实现提取网络的rss信息并存入本地的xml文件实例

1、一。constant.java 文件:public class constant public public public public public public public public publicstaticstaticstaticstaticstaticstaticstaticstaticstaticstringstringstringstringstringstringstringstringstringrs s_dom_root_t j： tle = n/channel/t irss_dom_r00t_link = n/channel/link"rss_dom_chi

2、ldren_root = n/channel/itemn;rss_dom_children_roo t_ ti tle =rss_dom_children_roo t_l ink = nlinkit;rss_dom_ch1：ldren_root_pubdate = npubda te”；r ss_dom_children_ r00 t_type = "type*;“id”；rss dom children root id =rss dom children root description ="description"二。xmldom4j.java 文件：写入文件

3、d:/qqq.xmlimport org.dom4j.document;import org.dom4j.documenthelper;import org.dom4j.element;import org.dom4j.io.xmlwriter;import java.io.*;public class xmldom4jpublic void generatedocument()document document = documenthelper.createdocument();element catalogelement = document.addelementc'catalog

4、1'); catalogelement.addcomment(,an xml catalog11);catalogeleme nt.addprocessi ngln structi ontarget't'text1');element journalelement = catalogelement.addelementcjournat1); journalelement.addattribute("title", "xml zone*'); journalelement.addattribute("publishe

5、r", "ibm developerworks");element articleelement二journalelement.addelementrarticle1'); articleelement.addattributec'level", "intermediate"); articleelement.addattribute("date", "december-2001");eleme nt titleelement=articleeleme nt.addeleme n

6、t(”title”)； titleelement.settext(”java configuration with xml schema'*);element authorelement=articleelement.addelement(”authol);element firstnameelement=authorelement.addeleme nt(”first name”);firstnameelement.settext(,marcello,');element lastnameelement二authorelement.addelementlastname”)；

7、lastnameelement.settext("vitalettin)；tryxmlwriter output = new xmlwriter(new filewriter( new file("d:/qqql.xml"); output.write( document);output.close();catch(ioexception e)system.out.pri ntln (e.getmessage();public static void main(string args)xmldom4j dom4j=new xmldom4j();dom4j.ge n

8、eratedocume nt();三。xmlparse. java 文件：import javaiofile;import javaio.filewriter;import javaioioexception;import javaneturl;import java.text.simpledateformat;import javautdate;import javautiliterator;import java.util.list;import org.dom4 jdocument;import org.dom4 jdocumenthelper;import org.dom4 jelem

9、ent;import orgdom4 jnode;import orgdom4 j.io.xmlwriter;public class xmlparse / * param args*/public static void main(string args) xmlutils xu = new xmlutils();url url;try url = newurl (11 http: /www. hl jdlys . gov cn/rss_f eed/xzzf_nodate xmln );list<?> list = xu.getxmllnfo(constantrss_dom_ch

10、ildren_root url);document document = documenthelper.createdocument();/element elementroot = (element) listiterator () next (); node noderoottitle =elementroot.selectsinglenode(constant.rss_dom_root_title);node noderootlink =elementroot.selectsinglenode(constantrss_dom_root_link);element channeleleme

11、nt = document addelement (l!channel,t); element titleelement = channelelementaddelement("titlen); titleelementsettext(noderoottitlegettext ();/element linkelement = channelelement. addelement (lflink,f); linkelementsettext(noderootlinkgettext();for (iterator<?> iter = list.iterator (); it

12、er.hasnext();) element element = (element) iter.next();node nodet=elementselectsinglenode(constantrss_dom_children_root_title);node nodelink =elementselectsinglenode(constantrss_dom_children_root_link);node nodepubdate =elementselectsinglenod©(constantrss_dom_children_root_pubdate);node nodetyp

13、e =elementselectsinglenode(constantrss_dom_children_root_type);node nodeld =elementselectsinglenode(constantrss_dom_children_root_id);node nodedescription =element.selectsinglenode(constant.rss_dom_children_root_description);/system, out .printin (element. attributevalue (hversionh ) ) ; /获取)阪本 elem

14、ent itemelement = channelelement. addelement ( h item11); element cldtitleelement =itemelementaddelement("title”);cldtitleelementsettext(nodetitlegettext() ) ;/element cldlinkelement = itemelement.addelement(hlinkn); cldlinkelementsettext(nodelinkgettext();element pubdateelement =itemelementadd

15、element(npubdaten);pubdateelementsettext(nodepubdatqgettext();tryelement typeelement = itemelement.addelement(htypeh);typeelementsettext(nodetypegettext ();catch(nullpointerexception e)element idelement = itemelementaddelement("id”); idelementsettext(nodeidgettext();element descriptionelement =

16、itemelementaddelement("description”);descriptionelementsettext(nodedescription.gettext(); /trydate time = new date ();simpledateformat sdf = newsimpledateform且t(hyyyy-mm-dd-hh-mm-ss");string nowtime = sdf.format(time);/system.out.printin(nowtime);string f ilename = nowtime + 11. xml,f;xmlwriter output = new xmlwri