Establish, modify the XML document with DOM4J, and resolve formatting outputs and Chinese issues
DOM4J TUTORIALS </ TITLE> </ book> <book show = "no" > <Title> Lucene Studing </ Title> </ book> <book show = "no"> <title> Lucene in action </ title> </ book> <owner> O'Reilly </ Owner> </ books></p>
<p>---------------------</p>
<p>Package com.holen.dom4j;</p>
<p>Import java.io.file;</p>
<p>Import java.io.filewriter;</p>
<p>Import java.util.iterator;</p>
<p>Import java.util.list;</p>
<p>Import org.dom4j.attribute;</p>
<p>Import org.dom4j.document;</p>
<p>Import org.dom4j.documenthelper;</p>
<p>Import org.dom4j.element;</p>
<p>Import Org.dom4j.io.outputFormat;</p>
<p>Import org.dom4j.io.saxreader;</p>
<p>Import org.dom4j.io.xmlwriter;</p>
<p>/ **</p>
<p>* @Author holin chen</p>
<p>* /</p>
<p>Public class dom4jdemo {</p>
<p>Public Dom4jdemo () {</p>
<p>}</p>
<p>/ **</p>
<p>* Establish an XML document, the document name is determined by the input parameter</p>
<p>* @Param FileName needs to be established file name</p>
<p>* @return returns the result of the operation, 0 tables fail, 1 table is successful</p>
<p>* /</p>
<p>Public int createXmlfile (String filename) {</p>
<p>/ ** Return to the results, 0 tables fail, 1 table is successful * /</p>
<p>Int returnvalue = 0;</p>
<p>/ ** Establish Document object * /</p>
<p>Document Document = documenthelper.createdocument ();</p>
<p>/ ** Establish the root of the XML document BOOKS * /</p>
<p>ELEMENT BOOKSELEMENT = Document.AddeElement ("Books");</p>
<p>/ ** Add a line of comments * /</p>
<p>BookSelement.addcomment ("this is a test for Dom4j, Holen, 2004.9.11");</p>
<p>/ ** Join the first BOOK node * /</p>
<p>Element Bookelement = Bookselement.addelement ("book"); "BOOK");</p>
<p>/ ** Add to show parameter content * /</p>
<p>Bookelement.Addattribute ("Show", "Yes");</p>
<p>/ ** Add Title Node * /</p>
<p>Element TitleElement = Bookelement.addeElement ("Title");</p>
<p>/ ** Set content for Title * /</p>
<p>TitleElement.Settext ("Dom4j Tutorials");</p>
<p>/ ** Similar to the two BOOK * /</p>
<p>Bookelement = bookselement.addelement ("book"); Bookelement.addattribute ("Show", "YES");</p>
<p>TitleElement = Bookelement.addeElement ("Title");</p>
<p>TitleElement.Settext ("Lucene Studing");</p>
<p>Bookelement = BookSelement.addelement ("book");</p>
<p>Bookelement.addattribute ("Show", "NO");</p>
<p>TitleElement = Bookelement.addeElement ("Title");</p>
<p>TitleElement.Settext ("Lucene In Action");</p>
<p>/ ** Add to Owner Node * /</p>
<p>Element OwneRelement = BookSelement.addeElent ("Owner");</p>
<p>OwneRelement.Settext ("O'Reilly");</p>
<p>Try {</p>
<p>/ ** Write the contents in Document * /</p>
<p>XMLWRITER Writer = New FILEWRITER (New File (FileName)))</p>
<p>Writer.write (Document);</p>
<p>Writer.close ();</p>
<p>/ ** Execute success, need to return 1 * /</p>
<p>ReturnValue = 1;</p>
<p>} catch (exception ex) {</p>
<p>EX.PrintStackTrace ();</p>
<p>}</p>
<p>Return ReturnValue;</p>
<p>}</p>
<p>/ **</p>
<p>* Modify the content in the XML file and save as a new file</p>
<p>* Keep how to add nodes in DOM4J, modify nodes, delete nodes</p>
<p>* @Param FileName Modify Object File</p>
<p>* @Param newFileName After modifying saving as this file</p>
<p>* @return returns the result of the operation, 0 tables fail, 1 table is successful</p>
<p>* /</p>
<p>Public int modixmlfile (string newfilename) {</p>
<p>Int returnvalue = 0;</p>
<p>Try {</p>
<p>SAXReader saxreader = new saxreader ();</p>
<p>Document Document = SAXReader.read (New File (FileName));</p>
<p>/ ** One of the modifications: If the content of the Show parameter in the Book node is YES, modify it into no * /</p>
<p>/ ** Find objects with XPath * /</p>
<p>List list = document.selectnodes ("/ books / book / @ Show");</p>
<p>Iterator it = list.iterator ();</p>
<p>While (ore.hasnext ()) {</p>
<p>Attribute attribute = (attribute) iter.next ();</p>
<p>IF (attribute.getvalue (). Equals ("yes")) {</p>
<p>Attribute.SetValue ("no");</p>
<p>}</p>
<p>}</p>
<p>/ **</p>
<p>* Two two modifications: change the Owner item content to tSHINGHUA</p>
<p>* Add the Date node in the Owner node, the Date node is 2004-09-11, add a parameter Type for the Date node</p>
<p>* /</p>
<p>List = Document.selectNodes ("/ books / Owner");</p>
<p>iter = list.iterator ();</p>
<p>IF (iter.hasnext ()) {ELEMENT OWNERELEMENT = (Element) iter.next ();</p>
<p>OwneRelement.setText ("TSHINGHUA");</p>
<p>Element DateElement = OwneRelement.addeElement ("Date");</p>
<p>DateElement.Settext ("2004-09-11");</p>
<p>DateElement.addattribute ("Type", "Gregorian Calendar";</p>
<p>}</p>
<p>/ ** Three modifications: If the title content is DOM4J Tutorials, delete the node * /</p>
<p>List = document.selectnodes ("/ books / book");</p>
<p>iter = list.iterator ();</p>
<p>While (ore.hasnext ()) {</p>
<p>ELEMENT BOOKELEMENT = (Element) iTer.next ();</p>
<p>Iterator itrator = Bookelement.elementIterator ("Title");</p>
<p>While (item.hasnext ()) {</p>
<p>Element TitleElement = (Element) Iterator.next ();</p>
<p>IF (TitleElement.getText (). Equals ("DOM4J Tutorials")) {</p>
<p>Bookelement.remove (TitleElement);</p>
<p>}</p>
<p>}</p>
<p>}</p>
<p>Try {</p>
<p>/ ** Write the contents in Document * /</p>
<p>XMLWRITER Writer = New Filewriter (New File (New File (New File (NewFileName));</p>
<p>Writer.write (Document);</p>
<p>Writer.close ();</p>
<p>/ ** Execute success, need to return 1 * /</p>
<p>ReturnValue = 1;</p>
<p>} catch (exception ex) {</p>
<p>EX.PrintStackTrace ();</p>
<p>}</p>
<p>} catch (exception ex) {</p>
<p>EX.PrintStackTrace ();</p>
<p>}</p>
<p>Return ReturnValue;</p>
<p>}</p>
<p>/ **</p>
<p>* Format XML document and solve Chinese problems</p>
<p>* @Param FileName</p>
<p>* @Return</p>
<p>* /</p>
<p>Public int formatXMLFile (String filename) {</p>
<p>Int returnvalue = 0;</p>
<p>Try {</p>
<p>SAXReader saxreader = new saxreader ();</p>
<p>Document Document = SAXReader.read (New File (FileName));</p>
<p>XMLWRITER OUTPUT = NULL;</p>
<p>/ ** Format output, type IE browsing * /</p>
<p>Outputformat format = outputformat.createprettyPrint ();</p>
<p>/ ** Specify XML character set encoding * /</p>
<p>Format.setencoding ("GBK");</p>
<p>Output = New XMLWRITER (New File (New File (Filename), Format);</p>
<p>Output.write (document);</p>
<p>Output.close ();</p>
<p>/ ** Execute success, need to return 1 * /</p>
<p>ReturnValue = 1;</p>
<p>} catch (exception ex) {</p>
<p>EX.PrintStackTrace ();</p>
<p>}</p>
<p>Return ReturnValue;</p>
<p>}</p>
<p>Public static void main (string [] args) {DOM4JDEMO TEMP = New Dom4jdemo ();</p>
<p>System.out.println (Temp.createxmlfile))))); "D: //holen.xml");</p>
<p>System.out.println (Temp.Modixmlfile ("D: //holen.xml", "D: //holen2.xml");</p>
<p>System.out.println (Temp.FormatXMLFile ("D: //holen2.xml));</p>
<p>}</p>
<p>}</p></div><div class="text-center mt-3 text-grey">
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