Java 字符串作为文档

下面是关于使用XPath解析XML的教程，其中给出了以下打开文档的示例：

DocumentBuilderFactory domFactory = DocumentBuilderFactory.newInstance();
domFactory.setNamespaceAware(true); // never forget this!
DocumentBuilder builder = domFactory.newDocumentBuilder();
Document doc = builder.parse("books.xml");

我想做的是更改它，使

文档

读取我已经生成的

字符串

变量，而不是从文件中读取。我该怎么做呢？

看

builder.parse（新的InputSource（新的StringReader（“”））；

您可以试试这个：

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

builder.parse(new InputSource(new StringReader("<some><xml></xml></some>")));

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