如何使用 DOM (JAVA) 在 XML 文档中添加 Doctype
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How to add Doctype in XML document using DOM (JAVA)
提问by wali
I have created a XML document using DOM in java. I am unable to add doctype. I want the doctype like this.
我在 Java 中使用 DOM 创建了一个 XML 文档。我无法添加文档类型。我想要这样的文档类型。
<!DOCTYPE IndInfo PUBLIC "EDAFileSomething" "EDAFileSomething_2_0.dtd">
Here is the document creation code.
这是文档创建代码。
DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder = docFactory.newDocumentBuilder();
Document doc = docBuilder.newDocument();
Here is the Transformer Object Code.
这是变压器目标代码。
TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = null;
try {
transformer = transformerFactory.newTransformer();
} catch (TransformerConfigurationException ex) {
Logger.getLogger(Reader.class.getName()).log(Level.SEVERE, null, ex);
}
DOMSource source = new DOMSource(doc);
try {
StreamResult result = new StreamResult(System.out);
transformer.transform(source, result);
} catch (TransformerException ex) {
Logger.getLogger(Reader.class.getName()).log(Level.SEVERE, null, ex);
}
System.out.println("File saved!");
回答by Adam
You can construct the doctype with the DOM and set the doctype as an output property.
您可以使用 DOM 构造文档类型并将文档类型设置为输出属性。
TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
transformer.setOutputProperty(OutputKeys.INDENT, "yes");
transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "no");
transformer.setOutputProperty(OutputKeys.METHOD, "xml");
DOMImplementation domImpl = document.getImplementation();
DocumentType doctype = domImpl.createDocumentType("doctype",
"-//Oberon//YOUR PUBLIC DOCTYPE//EN",
"YOURDTD.dtd");
transformer.setOutputProperty(OutputKeys.DOCTYPE_PUBLIC, doctype.getPublicId());
transformer.setOutputProperty(OutputKeys.DOCTYPE_SYSTEM, doctype.getSystemId());
DOMSource source = new DOMSource(document);
StreamResult result = new StreamResult(new File(database));
transformer.transform(source, result);
回答by Magnus
If you get an instance of DOMImplementationby invoking the getDOMImplementation()method on the DocumentBuilder, you can use the createDocumentmethod to create a new Documentwith the specified doctype.
如果DOMImplementation通过调用 上的getDOMImplementation()方法获得 的实例 DocumentBuilder，则可以使用该createDocument方法创建Document具有指定文档类型的新对象。
It also has a createDocumentTypemethod for creating a DocumentTypeobject
它还有一个createDocumentType创建DocumentType对象的方法
Refer to http://docs.oracle.com/javase/1.5.0/docs/api/org/w3c/dom/DOMImplementation.htmland http://docs.oracle.com/javase/1.5.0/docs/api/javax/xml/parsers/DocumentBuilder.htmlfor more info.
请参阅http://docs.oracle.com/javase/1.5.0/docs/api/org/w3c/dom/DOMImplementation.html和http://docs.oracle.com/javase/1.5.0/docs/ api/javax/xml/parsers/DocumentBuilder.html了解更多信息。
