Java : Text (XML) con ejemplos
Text (Java SE 22 & JDK 22) en Java con ejemplos.
Encontrará ejemplos de código en la mayoría de los métodos de Text.
Nota :
- Este artículo puede utilizar software de traducción para su comodidad. Consulte también la versión original en inglés.
Summary
Code examples on this page use the printDocument method below.
public void printDocument(Document document) throws TransformerException {
final var transformer = TransformerFactory.newInstance().newTransformer();
transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
final var result = new StreamResult(new StringWriter());
transformer.transform(new DOMSource(document), result);
System.out.println(result.getWriter());
}
final var builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
final var document = builder.newDocument();
final var root = document.createElement("root");
System.out.println(root); // [root: null]
document.appendChild(root);
final var text = document.createTextNode("abcd");
System.out.println(text); // [#text: abcd]
root.appendChild(text);
//<root>abcd</root>
printDocument(document);
Fields declared in Node
ATTRIBUTE_NODE, CDATA_SECTION_NODE, COMMENT_NODE, DOCUMENT_FRAGMENT_NODE, DOCUMENT_NODE, DOCUMENT_POSITION_CONTAINED_BY, DOCUMENT_POSITION_CONTAINS, DOCUMENT_POSITION_DISCONNECTED, DOCUMENT_POSITION_FOLLOWING, DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC, DOCUMENT_POSITION_PRECEDING, DOCUMENT_TYPE_NODE, ELEMENT_NODE, ENTITY_NODE, ENTITY_REFERENCE_NODE, NOTATION_NODE, PROCESSING_INSTRUCTION_NODE, TEXT_NODE
Consulte el siguiente enlace.
Methods
String getWholeText ()
final var xml = """
<root/>
""";
final var builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
final var document = builder.parse(new ByteArrayInputStream(xml.getBytes()));
final var root = document.getDocumentElement();
System.out.println(root);
final var aaa = document.createTextNode("aaa");
System.out.println(aaa); // [#text: aaa]
final var bbb = document.createTextNode("bbb");
System.out.println(bbb); // [#text: bbb]
root.appendChild(aaa);
//<root>aaa</root>
printDocument(document);
System.out.println(aaa.getWholeText()); // aaa
System.out.println(bbb.getWholeText()); // bbb
root.appendChild(bbb);
//<root>aaabbb</root>
printDocument(document);
System.out.println(aaa.getWholeText()); // aaabbb
System.out.println(bbb.getWholeText()); // aaabbb
boolean isElementContentWhitespace ()
final var xml = """
<!DOCTYPE root [
<!ELEMENT child-a (dummy?)>
<!ELEMENT child-b (#PCDATA)>
]>
<root>
<child-a> </child-a>
<child-b> </child-b>
</root>
""";
final var factory = DocumentBuilderFactory.newInstance();
final var builder = factory.newDocumentBuilder();
builder.setErrorHandler(new DefaultHandler());
final var document = builder.parse(new ByteArrayInputStream(xml.getBytes()));
final var childA = document.getElementsByTagName("child-a").item(0);
System.out.println(childA); // [child-a: null]
if (childA.getFirstChild() instanceof Text text) {
System.out.println(text); // [#text: ]
System.out.println(text.isElementContentWhitespace()); // true
}
final var childB = document.getElementsByTagName("child-b").item(0);
System.out.println(childA); // [child-b: null]
if (childB.getFirstChild() instanceof Text text) {
System.out.println(text); // [#text: ]
System.out.println(text.isElementContentWhitespace()); // false
}
Text replaceWholeText (String content)
final var xml = """
<root>aaa</root>
""";
final var builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
final var document = builder.parse(new ByteArrayInputStream(xml.getBytes()));
final var root = document.getDocumentElement();
System.out.println(root); // [root: null]
if (root.getFirstChild() instanceof Text text) {
System.out.println(text); // [#text: aaa]
//<root>aaa</root>
printDocument(document);
System.out.println(text.replaceWholeText("AAA")); // [#text: AAA]
//<root>AAA</root>
printDocument(document);
root.appendChild(document.createTextNode("BBB"));
//<root>AAABBB</root>
printDocument(document);
System.out.println(text.replaceWholeText("XXX")); // [#text: XXX]
//<root>XXX</root>
printDocument(document);
}
Text splitText (int offset)
final var xml = """
<root>abcde</root>
""";
final var builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
final var document = builder.parse(new ByteArrayInputStream(xml.getBytes()));
final var root = document.getDocumentElement();
System.out.println(root); // [root: null]
if (root.getFirstChild() instanceof Text text) {
System.out.println(text); // [#text: abcde]
System.out.println(text.splitText(2)); // [#text: cde]
}
final var nodes = root.getChildNodes();
System.out.println("-- nodes --");
for (int i = 0; i < nodes.getLength(); i++) {
System.out.println(nodes.item(i));
}
// Result
// ↓
//-- nodes --
//[#text: ab]
//[#text: cde]
Methods declared in CharacterData
appendData, deleteData, getData, getLength, insertData, replaceData, setData, substringData
Consulte el siguiente enlace.
Methods declared in Node
appendChild, cloneNode, compareDocumentPosition, getAttributes, getBaseURI, getChildNodes, getFeature, getFirstChild, getLastChild, getLocalName, getNamespaceURI, getNextSibling, getNodeName, getNodeType, getNodeValue, getOwnerDocument, getParentNode, getPrefix, getPreviousSibling, getTextContent, getUserData, hasAttributes, hasChildNodes, insertBefore, isDefaultNamespace, isEqualNode, isSameNode, isSupported, lookupNamespaceURI, lookupPrefix, normalize, removeChild, replaceChild, setNodeValue, setPrefix, setTextContent, setUserData
Consulte el siguiente enlace.