xml教學 - java解析xml




有沒有比這個代碼更優雅的方式將XML文檔轉換為Java中的String? (3)

依賴DOM Level3加載/保存

public String getStringFromDoc(org.w3c.dom.Document doc)    {
    DOMImplementationLS domImplementation = (DOMImplementationLS) doc.getImplementation();
    LSSerializer lsSerializer = domImplementation.createLSSerializer();
    return lsSerializer.writeToString(doc);   
}

這是當前使用的代碼。

public String getStringFromDoc(org.w3c.dom.Document doc)    {
        try
        {
           DOMSource domSource = new DOMSource(doc);
           StringWriter writer = new StringWriter();
           StreamResult result = new StreamResult(writer);
           TransformerFactory tf = TransformerFactory.newInstance();
           Transformer transformer = tf.newTransformer();
           transformer.transform(domSource, result);
           writer.flush();
           return writer.toString();
        }
        catch(TransformerException ex)
        {
           ex.printStackTrace();
           return null;
        }
    }

您可以使用XOM來執行此操作:

org.w3c.dom.Document domDocument = ...;
nu.xom.Document xomDocument = 
    nu.xom.converters.DOMConverter.convert(domDocument);
String xml = xomDocument.toXML();

這更簡潔一點:

try {
    Transformer transformer = TransformerFactory.newInstance().newTransformer();
    StreamResult result = new StreamResult(new StringWriter());
    DOMSource source = new DOMSource(doc);
    transformer.transform(source, result);
    return result.getWriter().toString();
} catch(TransformerException ex) {
    ex.printStackTrace();
    return null;
}

否則你可以使用像Apache的XMLSerializer這樣的庫:

//Serialize DOM
OutputFormat format    = new OutputFormat (doc); 
// as a String
StringWriter stringOut = new StringWriter ();    
XMLSerializer serial   = new XMLSerializer (stringOut,format);
serial.serialize(doc);
// Display the XML
System.out.println(stringOut.toString());






xml