如何从Java创建xml文件

Question

我正在构建一个创建XML文件的简单Java程序。 我正在构建此代码：

public static void creaXMLOrdine(OrdiniNuovo ordine,String codiceNegozio,
            String pathFile){
        try{
            DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
            DocumentBuilder docBuilder = docFactory.newDocumentBuilder();

            Document doc = docBuilder.newDocument();
            Element rootElement = doc.createElement("ORDER");
            doc.appendChild(rootElement);

            Element info = doc.createElement("INFO");
            rootElement.appendChild(info);

            Attr attr = doc.createAttribute("id");
            attr.setValue(ordine.getCodiceOrdine()+"");
            info.setAttributeNode(attr);

            TransformerFactory transformerFactory = TransformerFactory.newInstance();
            Transformer transformer = transformerFactory.newTransformer();
            DOMSource source = new DOMSource(doc);
            String nomeFile = pathFile+codiceNegozio+"_"+ordine.getCodiceOrdine()+".xml";
            StreamResult result = new StreamResult(new File(nomeFile));

            // Output to console for testing
            // StreamResult result = new StreamResult(System.out);

            transformer.transform(source, result);

            System.out.println("File saved!");
        }catch(Exception e){
            log.logStackTrace(e);
            VisualMessage.getErrore();
        }
    }

但是，如果我尝试启动此代码，则会出现此错误：

线程“ AWT-EventQueue-0”中的异常java.lang.AbstractMethodError：com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.setDocumentInfo（DOM2TO中的gnu.xml.dom.DomDocument.getXmlStandalone（）Z .java：377）（位于com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse（DOM2TO.java:131），位于com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transformIdentity（TransformerImpl.java:702）的.parse（DOM2TO.java:98）com.sun.org.apache.xalan.internal.xsltc的.parse（DOM2TO.java:98） com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform（TransformerImpl.java:359）上的.trax.TransformerImpl.transform（TransformerImpl.java:746），位于supporto.Utility.creaXMLOrdine（Utility.java ：142）在PanelFornitoriClienti.PanelNuovoOrdine.inviaOrdineXFile（PanelNuovoOrdine.java:461）在PanelFornitoriClienti.PanelNuovoOrdine $ 10.actionPerformed（PanelNuovoOrdine.java:776）在javax.swing.AbstractButton.fireActionPerwings：2018。 AbstractButton $韩 dler.actionPerformed（AbstractButton.java:2341）at javax.swing.DefaultButtonModel.fireActionPerformed（DefaultButtonModel.java:402）at javax.swing.DefaultButtonModel.setPressed（DefaultButtonModel.java:259）at javax.swing.plaf.basic.BasicButtonListener java.awt.AWTEventMulticaster.mouseReleased（AWTEventMulticaster.java:289）的.mouseReleased（BasicButtonListener.java:252）java.awt.Component.processMouseEvent（Component）的java.awt.AWTEventMulticaster.mouseReleased（AWTEventMulticaster.java:289）的。的javax.swing.JComponent.processMouseEvent（JComponent.java:3320）处的java：6516）的java.awt.Container.processEvent（Container.java:2229）处的java.awt.Component.processEvent（Component.java:6281）处java.awt.LightweightDispatcher上的java.awt.Component.dispatchEvent（Component.java:4698）上的java.awt.Container.dispatchEventImpl（Container.java:2287）上的java.awt.Component.dispatchEventImpl（Component.java:4872） .retargetMouseEvent（Container.java:4832），位于java.awt.LightweightDispatcher.processMouseEvent（Container。 java.awt.LightweightDispatcher.dispatchEvent（Container.java:4422）at java.awt.Container.dispatchEventImpl（Container.java:2273）at java.awt.Window.dispatchEventImpl（Window.java:2719） java.awt.EventQueue.access $ 200（EventQueue.java:103）处的java.awt.EventQueue.dispatchEventImpl（EventQueue.java:735）处的java.awt.Component.dispatchEvent（Component.java:4698）。 EventQueue $ 3.run（EventQueue.java:694）at java.awt.EventQueue $ 3.run（EventQueue.java:692）at java.security.AccessController.doPrivileged（Native Method）at java.security.ProtectionDomain $ 1.doIntersectionPrivilege（ProtectionDomain .java：76）at java.security.ProtectionDomain $ 1.doIntersectionPrivilege（ProtectionDomain.java:87）at java.awt.EventQueue $ 4.run（EventQueue.java:708）at java.awt.EventQueue $ 4.run（EventQueue.java ：706），位于java.security.AccessController.doPrivileged（本机方法），位于java.security.ProtectionDomain $ 1.doIntersectionPrivilege（ProtectionDomain.java：76），位于java.awt.EventQueue.dispatchEvent（事件队列）。 位于java.awt.EventDispatchThread.pumpOneEventForFilters（EventDispatchThread.java:242）处的java.awt.EventDispatchThread.pumpEventsForHierarchy（EventDispatchThread.java:150）处的java.awt.EventDispatchThread.pumpOneEventForFilters（EventDispatchThread.java:242） java.awt.EventDispatchThread.pumpEvents（EventDispatchThread.java:138）上的java.awt.EventDispatchThread.pumpEvents（EventDispatchThread.java:146）at java.awt.EventDispatchThread.run（EventDispatchThread.java:91）

Answer 1

查看是否有此帮助：

public class UtilsXML {

    private static Document doc;

    // Root "ORDER"
    public static Element addRoot(String rootName) {
        Element root = doc.createElement(rootName);
        doc.appendChild(root);
        return root;
    }

    // Elements inside ROOT like INFO, OTHERS
    public static Element addElement(String rootName, Element root) {
        Element e = doc.createElement(rootName);
        root.appendChild(e);
        return e;
    }

    // Elements inside other elements INFO -> Id, Value
    public static void addNode(Element e, String tagName, String content) {
        Element employ = doc.createElement(tagName);
        employ.appendChild(doc.createTextNode(content));
        e.appendChild(employ);
    }

    // Document
    public static void makeDoc() throws ParserConfigurationException {
        DocumentBuilderFactory dF = DocumentBuilderFactory.newInstance();
        DocumentBuilder docB = dF.newDocumentBuilder();
        doc = docB.newDocument();       
    }

    // Save the xml file
    public static void makeFile(String filePath) throws TransformerException {
        TransformerFactory tF = TransformerFactory.newInstance();
        Transformer t = tF.newTransformer();
        DOMSource source = new DOMSource(doc);
        File xml = new File(filePath);
        StreamResult r = new StreamResult(xml);
        t.transform(source, r);
    }
}

例：

    try {
        UtilsXML.makeDoc();

        Element order = UtilsXML.addRoot("ORDER");

        Element info = UtilsXML.addElement("INFO", order);
        UtilsXML.addNode(info, "Id", "123456");
        UtilsXML.addNode(info, "Value", "99999");

        Element other = UtilsXML.addElement("OTHERS", order);
        UtilsXML.addNode(other, "Date", "01/01/2017");
        UtilsXML.addNode(other, "Status", "Finish");            

        UtilsXML.makeFile("c:/opensource/myXml.xml");
    } catch (ParserConfigurationException e) {          
        e.printStackTrace();
    }
<ORDER>
    <INFO>
        <Id>123456</Id>
        <Value>99999</Value>
    </INFO>
    <OTHERS>
        <Date>01/01/2017</Date>
        <Status>Finish</Status>
    </OTHERS>
</ORDER>