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Updating xml file using java

updating xml file using java-70

PI can be used for inserting non-XML statements, such as scripts, into the document, to be passed to an application for processing.

updating xml file using java-78updating xml file using java-6updating xml file using java-34

SAXException; public class Java Xml Dom Tree Walker Ex $ mvn -q exec:java continents europe slovakia capital Bratislava population 421000 hungary capital Budapest population 1759000 poland capital Warsaw population 1735000 asia china capital Beijing population 21700000 vietnam capital Hanoi population 7500000 package com.zetcode; import Markup Builder */ response.value.books.book[0].replace Node def new Node = response.value.books.book[0] assert new Node.name() == "book" assert new [email protected] == "3" assert new Node.title.text() == "To Kill a Mockingbird" assert new Node.author.text() == "Harper Lee" assert new [email protected]() == "3"def response = new Xml Slurper().parse Text(books) /* Use the same syntax as Markup Builder */ response.value.books.book[0].replace Node assert response.value.books.book[0].title.text() == "Don Quixote" /* That mkp is a special namespace used to escape away from the normal building mode of the builder and get access to helper markup methods 'yield', 'pi', 'comment', 'out', 'namespaces', 'xml Declaration' and 'yield Unescaped' */ def result = new Streaming Markup Builder()String() def changed Response = new Xml Slurper().parse Text(result) assert changed Response.value.books.book[0].title.text() == "To Kill a Mockingbird" Finally both parsers also use the same approach for adding a new attribute to a given attribute.A DOM parser comes with JDK, so there is no need to download a dependency. SAXException; public class Java Xml Dom Read Ex Node node1 = Elements By Tag Name("firstname").item(0); String fname = node1Text Content(); Node node2 = Elements By Tag Name("lastname").item(0); String lname = node2Text Content(); Node node3 = Elements By Tag Name("occupation").item(0); String occup = node3Text Content(); $ mvn -q exec:java Root element: users Current Element: user User id: 1 First name: Peter Last name: Brown Occupation: programmer Current Element: user User id: 2 First name: Martin Last name: Smith Occupation: accountant Current Element: user User id: 3 First name: Lucy Last name: Gordon Occupation: teacher package com.zetcode; import Java DOM parser traverses the XML file and creates the corresponding DOM objects.

These DOM objects are linked together in a tree structure.

is a standard tree structure, where each node contains one of the components from an XML structure.

Element nodes and text nodes are the two most common types of nodes.

SAXException; public class Java Xml Dom Read Elements $ mvn -q exec:java 1 continents 2 europe 3 slovakia 4 capital 5 population 6 hungary 7 capital 8 population 9 poland 10 capital 11 population 12 asia 13 china 14 capital 15 population 16 vietnam 17 capital 18 population package com.zetcode; import

SAXException; public class Java Xml Dom Read Text package com.zetcode; import

In the following sample we want to get the first book’s author’s id. Let’s see the code first: def response = new Xml Slurper().parse Text(books) def book = response.value.books.book[0] (1) def book Author Id1 = [email protected] (2) def book Author Id2 = book['@id'] (3) assert book Author Id1 == '1' (4) assert book Author Id1Integer() == 1 (5) assert book Author Id1 == book Author Id2def response = new Xml Slurper().parse Text(books) // .'*' could be replaced by .children() def catcher In The Rye = response.value.books.'*'assert catcher In The Rye.title.text() == 'Catcher in the Rye' What if we would like to look for a given value without having to know exactly where it is.