Modify XML file for Java manipulation of XML

Source: Internet
Author: User

Modify XML file for Java manipulation of XML

First, JAVA DOM PARSER

DOM Interfaces
The DOM defines several Java interfaces. Here is the most common interfaces:
Node-the Base datatype of the DOM.
Element-the vast majority of the objects you ' ll deal with is Elements.
Attr represents a attribute of an element.
Text the actual content of an Element or Attr.
Document represents the entire XML document. A Document object is an often referred to as a DOM tree.
Common DOM Methods
When you're working with the DOM, there is several methods you'll use often:
Document.getdocumentelement ()-Returns The root element of the document.
Node.getfirstchild ()-Returns The first child of a given Node.
Node.getlastchild ()-Returns The last child of a given Node.
Node.getnextsibling ()-These methods return the next sibling of a given Node.
Node.getprevioussibling ()-These methods return the previous sibling of a given Node.
Node.getattribute (Attrname)-for a given Node, returns the attribute with the requested name.

Second, source code: Modifyxmlfile.java

1  PackageCn.com.zfc.lesson26.xml;2 3 ImportJava.io.File;4 5 ImportJavax.xml.parsers.DocumentBuilder;6 Importjavax.xml.parsers.DocumentBuilderFactory;7 ImportJavax.xml.transform.Transformer;8 Importjavax.xml.transform.TransformerFactory;9 ImportJavax.xml.transform.dom.DOMSource;Ten ImportJavax.xml.transform.stream.StreamResult; One  A Importorg.w3c.dom.Document; - Importorg.w3c.dom.Element; - ImportOrg.w3c.dom.NamedNodeMap; the ImportOrg.w3c.dom.Node; -  - /** - * Using Java DOM PARSER: Modifying an XML file +  *  -  * @authorZFC + * @date December 7, 2017 pm 8:31:55 A  */ at  Public classModifyxmlfile { -      Public Static voidMain (string[] args) { -         Try { -String FilePath = "i:\\code_workspace\\javase_workspace\\javase\\src\\cn\\com\\zfc\\lesson26\\xml\\ Modifyxmlfile.xml "; -             //1. Creating a File object, mapping XML files -File File =NewFile (filePath); in             //2. Create a Documentbuilderfactory object to create a Documentbuilder object -Documentbuilderfactory documentbuilderfactory =documentbuilderfactory.newinstance (); to             //3. Create a Documentbuilder object to convert the XML file to a Document object +Documentbuilder Documentbuilder =Documentbuilderfactory.newdocumentbuilder (); -             //4. Create Document object, parse XML file theDocument document =documentbuilder.parse (file); *             //Modify the first student $             //5. Get the first Student nodePanax NotoginsengNode student = document.getElementsByTagName ("Student"). Item (0); -             //get all the properties of a node student node theNamedNodeMap NamedNodeMap =student.getattributes (); +             //Gets the attribute ID that defines the student ANode id = namednodemap.getnameditem ("id"); the             //Reset value for attribute ID +Id.settextcontent ("student11"); -             //6, obtain the root node students the first direct sub-node student $Student = document.getElementsByTagName ("Student"). Item (0); $Element studentelement =(Element) student; -             //7. Get the direct sub-node of node student name, sex . -Node name = Studentelement.getelementsbytagname ("name"). Item (0); theNode sex = studentelement.getelementsbytagname ("Sex"). Item (0); -Element nameelement =(Element) name;WuyiElement sexelement =(Element) sex; the             //8. Set the value to the node -Nameelement.settextcontent ("TomTom"); WuSexelement.settextcontent ("Femalefemale"); -             //9. Create a Transformerfactory object AboutTransformerfactory transformerfactory =transformerfactory.newinstance (); $             //10. Create a Transformer object -Transformer Transformer =Transformerfactory.newtransformer (); -             //11. Create a Domsource object -Domsource Domsource =NewDomsource (document); A             //12. Create a Streamresult object +Streamresult Restreamresult =Newstreamresult (file); the Transformer.transform (Domsource, restreamresult); -  $             //Output Test Results theStreamresult Consoleresult =NewStreamresult (System.out); the Transformer.transform (Domsource, consoleresult); the  the}Catch(Exception e) { - e.printstacktrace (); in         } the     } the}

Modifyxmlfile.xml

1 <?XML version= "1.0" encoding= "UTF-8" standalone= "no"?>2 <Students>3     <StudentID= "Student1">4         <name>Tom</name>5         <Sex>Female</Sex>6     </Student>7     <StudentID= "Student2">8         <name>Lucy</name>9         <Sex>Male</Sex>Ten     </Student> One </Students>

Third, the operation effect:

1 <?XML version= "1.0" encoding= "UTF-8" standalone= "no"?><Students>2     <StudentID= "Student11">3         <name>TomTom</name>4         <Sex>Femalefemale</Sex>5     </Student>6     <StudentID= "Student2">7         <name>Lucy</name>8         <Sex>Male</Sex>9     </Student>Ten </Students>

Modify XML file for Java manipulation of XML

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