在Java中创建XML文件的最佳方法是什么？
我们目前正在使用dom4j来创建XML文件。 但是，我猜现在有更好的东西了。 如果我们是Java 1.6或更高版本，那么在写出XML文件时使用的最好（运行时最快，使用简单）类是什么。
我不需要构建DOM然后编写整个DOM。 当我将它们传递给类时，我只需要能够写出元素/属性的东西。
谢谢 – 戴夫
如果您只想编写一个XML文档，可以精确控制元素，属性和其他文档组件的创建，那么您可以使用StAX API中的XMLStreamWriter 。
我猜你知道StAX和SAX框架。
如果您没有考虑过它们，请提及它们。
http://docs.oracle.com/javase/tutorial/jaxp/stax/example.html#bnbgx
http://docs.oracle.com/javaee/1.4/tutorial/doc/JAXPXSLT5.html
我的2美分用于java-xmlbuilder 。 仅限于建筑。 它比JAXP复杂得多。
希望以下代码可以帮助您
package test.util.doc; import java.io.ByteArrayOutputStream; import java.io.File; import java.io.OutputStream; import java.io.Writer; import java.util.Map; import java.util.function.Consumer; import javax.xml.parsers.DocumentBuilderFactory; import javax.xml.parsers.ParserConfigurationException; import javax.xml.transform.OutputKeys; import javax.xml.transform.Result; import javax.xml.transform.Transformer; import javax.xml.transform.TransformerException; import javax.xml.transform.TransformerFactory; import javax.xml.transform.dom.DOMSource; import javax.xml.transform.stream.StreamResult; import org.w3c.dom.Document; import org.w3c.dom.Element; import org.w3c.dom.Node; import org.w3c.dom.Text; /** XML/HTML document writer class
* Internally uses w3c DOM
* @see Document * @author Dharmendrasinh Chudasama */ public class XMLWriter { /** * @param rootElementTagName * @param elementFillerConsume * @return instance of xml-writer * @author Dharmendrasinh Chudasama * @throws ParserConfigurationException */ public static XMLWriter create(String rootElementTagName, Consumer elementFillerConsume) throws ParserConfigurationException { return new XMLWriter(rootElementTagName, elementFillerConsume); } private Document doc; public XMLWriter(String rootElementTagName, Consumer elementFillerConsume) throws ParserConfigurationException { doc = DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument(); // doc.setXmlStandalone(true); ElementWrapper wrapper = ElementWrapper.createChildWrapper(doc, doc, rootElementTagName); //fill elementFillerConsume.accept(wrapper); } public String toXMLString() throws TransformerException { /* StringBuilderWriter writer = new StringBuilderWriter(); writer.append("").append(System.lineSeparator()); write(writer); return writer.toString().replace("/>", " />");*/ //OR /* StringBuilderWriter writer = new StringBuilderWriter(); write(writer); return writer.toString();*/ //OR ByteArrayOutputStream out = new ByteArrayOutputStream(700); write(out); return out.toString(); } public void write(File out) throws TransformerException { write(new StreamResult(out)); } public void write(OutputStream out) throws TransformerException { write(new StreamResult(out)); } public void write(Writer out) throws TransformerException { write(new StreamResult(out)); } private void write(Result result) throws TransformerException { //export Transformer transformer = TransformerFactory.newInstance().newTransformer(); transformer.setOutputProperty(OutputKeys.METHOD,"xml"); transformer.setOutputProperty(OutputKeys.VERSION, "1.0"); transformer.setOutputProperty(OutputKeys.ENCODING,"UTF-8"); transformer.setOutputProperty(OutputKeys.INDENT, "yes");//in multi lines, def="no" // transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");//remove tag, def="no" // transformer.setOutputProperty(OutputKeys.STANDALONE,"no"); // transformer.setOutputProperty(OutputKeys.MEDIA_TYPE,"text/xml"); // transformer.setOutputProperty("xalan:indent-amount", "0"); //def="0" // transformer.setOutputProperty("xalan:content-handler", "org.apache.xml.serializer.ToXMLStream"); // transformer.setOutputProperty("xalan:entities", "org/apache/xml/serializer/XMLEntities"); transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "3");//prefix spaces before tags, def="0" transformer.transform(new DOMSource(doc), result); } /** * @author Dharmendrasinh Chudasama */ public static class ElementWrapper { private Element element; private ElementWrapper(Element element) { this.element = element; } public Element getElement() { return element; } public Document getDoc() { return getElement().getOwnerDocument(); } private static Element createChildElement(final Document doc, final Node parent, final String childTagName){ Element child = doc.createElement(childTagName); parent.appendChild(child); return child; } private static ElementWrapper createChildWrapper(final Document doc, final Node parent, final String childTagName){ Element child = createChildElement(doc, parent, childTagName); return new ElementWrapper(child); } /**create and append child tag to current element * @return created child tag */ public Element createChildElement(String tagName){ return createChildElement(getDoc(), getElement(), tagName); } public ElementWrapper createChildWrapper(final String childTagName){ return createChildWrapper(getDoc(), getElement(), childTagName); } public void childText(String textContent){ if(textContent != null && !textContent.isEmpty()){ Text textNode = getDoc().createTextNode(textContent); getElement().appendChild(textNode); } } /* public ElementWrapper child(String tagName){ return new ElementWrapper(getDoc(), createChild(tagName)); } */ /** append tag with string content */ public void child(String tagName, String textContent){ createChildWrapper(tagName).childText(textContent); } /** * @param parent * @param tagName * @return child element */ /* public Element child(Element parent, String tagName){ final Document doc = parent.getOwnerDocument(); Element element = doc.createElement(tagName); parent.appendChild(element); return element; }*/ public void child(String tagName, Consumer elementConsumer){ elementConsumer.accept(createChildWrapper(tagName)); } /** @param dataMap {tagName, contentText} * @see #child(String, String) */ public void child(Map dataMap){ dataMap.forEach((tagName,contentText)->child(tagName, contentText)); } public void children(String[] childLoopTree, Consumer lastChildConsumer){ final Document doc = getDoc(); Element element = getElement(); for (String tagName : childLoopTree) { element = createChildElement(doc, element, tagName); } lastChildConsumer.accept(new ElementWrapper(element)); } /** Add / replace attribute */ public void attr(String attrName, String value){ getElement().setAttribute(attrName, value); } public void attr(Map dataMap){ dataMap.forEach((attrName,value)->attr(attrName, value)); } } /* //example public static void main(String[] args) throws Exception { ByteArrayOutputStream out = new ByteArrayOutputStream(); XMLWriter.create("html", html->{ html.childs(new String[]{"head","title"}, title->title.childText("My TITLE")); html.child("body", body->{ body.attr("bgcolor", "red"); body.child("div", div->{ Map userMap = new LinkedHashMap(); userMap.put("roll-no", "1"); userMap.put("name", "Dharm"); div.child(userMap); }); body.child("div", div->{ Map userMap = new LinkedHashMap(); userMap.put("roll-no", "2"); userMap.put("name", "Rajan"); div.child(userMap); }); }); }).write(out); System.out.println(out.toString()); } */ }