JDOM

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JDOM

Stable release	2.0.6.1 / December 9, 2021 (2021年12月09日)
Repository	github.com/hunterhacker/jdom Edit this at Wikidata
Written in	Java
Operating system	Cross-platform
Type	XML binding
License	Similar to Apache License
Website	jdom.org

JDOM in LePUS3

JDOM factories in LePUS3

JDOM is an open-source Java-based document object model for XML that was designed specifically for the Java platform so that it can take advantage of its language features.^[1] JDOM integrates with Document Object Model (DOM) and Simple API for XML (SAX), supports XPath and XSLT.^[2] It uses external parsers to build documents. JDOM was developed by Jason Hunter and Brett McLaughlin starting in March 2000.^[3] It has been part of the Java Community Process as JSR 102, though that effort has since been abandoned.^[4]

Examples

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Suppose the file "foo.xml" contains this XML document:

<shopname="shop for geeks"location="Tokyo, Japan">
<computername="iBook"price="1200$"/>
<comic_bookname="Dragon Ball vol 1"price="9$"/>
<geekyness_of_shopprice="priceless"/>
</shop>

One can parse the XML file into a tree of Java objects with JDOM, like so:

SAXBuilderbuilder=newSAXBuilder();
Documentdoc=builder.build(newFileInputStream("foo.xml"));
Elementroot=doc.getRootElement();
// root.getName() is "shop"
// root.getAttributeValue("name") is "shop for geeks"
// root.getAttributeValue("location") is "Tokyo, Japan"
// root.getChildren() is a java.util.List object that contains 3 Element objects.

In case you do not want to create the document object from any file or any input stream, you can create the document object against the element.

Elementroot=newElement("shop");// here <shop></shop> is the root
Documentdoc=newDocument(root);// create a new document with the supplied element as the root

As a converse, one can construct a tree of elements, then generate an XML file from it, as in the following example:

Elementroot=newElement("shop");
root.setAttribute("name","shop for geeks");
root.setAttribute("location","Tokyo, Japan");
Elementitem1=newElement("computer");
item1.setAttribute("name","iBook");
item1.setAttribute("price","1200$");
root.addContent(item1);
// perform similar steps for other elements
XMLOutputteroutputter=newXMLOutputter();
outputter.output(newDocument(root),newFileOutputStream("foo2.xml"));