Question

我想将xml字符串转换为xml文件。我得到一个xml字符串作为输出，到目前为止我有以下代码：

public static void stringToDom(String xmlSource) 
    throws SAXException, ParserConfigurationException, IOException {
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        DocumentBuilder builder = factory.newDocumentBuilder();
        Document doc = builder.parse(new InputSource(new StringReader(xmlSource)));
        //return builder.parse(new InputSource(new StringReader(xmlSource)));
    }

但是我不太确定我从哪里开始。我不是在任何地方创建文件，所以如何将其合并到其中？

我将xml字符串传递给xmlSource。

Answer 1

如果您只想将String的内容放在一个文件中，那么它实际上是否与XML无关。您可以跳过解析（这是一个相对昂贵的操作）并将String转储到文件中，如下所示：

public static void stringToDom(String xmlSource) 
        throws IOException {
    java.io.FileWriter fw = new java.io.FileWriter("my-file.xml");
    fw.write(xmlSource);
    fw.close();
}

如果你想要安全并避免编码问题，正如Joachim指出的那样，你需要解析。由于从不信任您的输入的良好做法，这可能是更好的方式。它看起来像这样：

public static void stringToDom(String xmlSource) 
        throws SAXException, ParserConfigurationException, IOException {
    // Parse the given input
    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    DocumentBuilder builder = factory.newDocumentBuilder();
    Document doc = builder.parse(new InputSource(new StringReader(xmlSource)));

    // Write the parsed document to an xml file
    TransformerFactory transformerFactory = TransformerFactory.newInstance();
    Transformer transformer = transformerFactory.newTransformer();
    DOMSource source = new DOMSource(doc);

    StreamResult result =  new StreamResult(new File("my-file.xml"));
    transformer.transform(source, result);
}

Answer 2

public static void stringToDom(String xmlSource) throws SAXException, ParserConfigurationException, IOException, TransformerException{
    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    DocumentBuilder builder = factory.newDocumentBuilder();
    Document doc = builder.parse(new InputSource(new StringReader(xmlSource)));
    // Use a Transformer for output
    TransformerFactory tFactory = TransformerFactory.newInstance();
    Transformer transformer = tFactory.newTransformer();

    DOMSource source = new DOMSource(doc);
    StreamResult result = new StreamResult(new File("c:/temp/test.xml"));
    transformer.transform(source, result);
}

来源：http://docs.oracle.com/javaee/1.4/tutorial/doc/JAXPXSLT4.html

Answer 3

只需将XML字符串的内容复制到扩展名为.xml的另一个文件即可。你可以使用java.io。

Answer 4

如果您的XML字符串是干净的并且可以写入，那么为什么不将它复制到最后带有.xml的文件中？

使用Java 1.7：

Path pathXMLFile = Paths.get("C:/TEMP/TOTO.XML");
Files.write(pathXMLFile, stringXML.getBytes(), StandardOpenOption.WRITE, StandardOpenOption.APPEND, StandardOpenOption.CREATE);

简单快捷：）

Java - 如何将XML字符串转换为XML文件？

4 个答案: