Java 将包含SOAP消息的XML文件转换为字符串，并更新特定标记的值

因此，我想看看是否有办法将带有soap消息的XML文件转换为字符串，然后更新特定标记的值。这里是我正在谈论的标签

 <o:Username>Bill</o:Username>
 <o:Password Type="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-username-token-profile-1.0#PasswordText">Hello123</o:Password>

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然而，我后来发现，由于这是一个资源文件，我不允许修改文件本身。我必须将xml文件存储为字符串，在不修改文件的情况下更新用户和密码值，然后返回xml文件的字节数组和更新后的值（不修改原始文档）。你知道我怎样才能做到这一点吗？

所以我提出的解决方案基本上是将结果更改为byteArrayOuputStream，而不是xml文件本身。发布更新代码：

try {
        String namespace = "http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd";
        configProperties.load(SecurityTokenHandler.class.getClassLoader().getResourceAsStream(PROPERTIES_FILE));
        DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
        documentBuilderFactory.setNamespaceAware(true);
        Document requestDoc = documentBuilderFactory.newDocumentBuilder().parse(SecurityTokenHandler.class.getClassLoader().getResourceAsStream(SOAP_REQUEST_FILE));
        Element docElement = requestDoc.getDocumentElement();
        docElement.getElementsByTagNameNS(namespace, "Username").item(0).setTextContent(configProperties.getProperty("username"));
        docElement.getElementsByTagNameNS(namespace,"Password").item(0).setTextContent(configProperties.getProperty("password"));
        Transformer docTransformer = TransformerFactory.newInstance().newTransformer();
        try (ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream()) {
            StreamResult result = new StreamResult(byteArrayOutputStream);
            DOMSource source = new DOMSource(requestDoc);
            docTransformer.transform(source, result);
            b = byteArrayOutputStream.toByteArray();
        }
    } catch(IOException | ParserConfigurationException | SAXException | TransformerException exception) {
        LOGGER.error("There was an error loading the properties file", exception);
    }

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@aUserHimself：有什么线索吗？使用XSLT转换如何？看起来这将是一个简单的转换。如果您认为这是一个选项，请将问题重新表述为：显示您期望的完整XML输入文件和输出XML文件。

try {
        String namespace = "http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd";
        configProperties.load(SecurityTokenHandler.class.getClassLoader().getResourceAsStream(PROPERTIES_FILE));
        DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
        documentBuilderFactory.setNamespaceAware(true);
        Document requestDoc = documentBuilderFactory.newDocumentBuilder().parse(SecurityTokenHandler.class.getClassLoader().getResourceAsStream(SOAP_REQUEST_FILE));
        Element docElement = requestDoc.getDocumentElement();
        docElement.getElementsByTagNameNS(namespace, "Username").item(0).setTextContent(configProperties.getProperty("username"));
        docElement.getElementsByTagNameNS(namespace,"Password").item(0).setTextContent(configProperties.getProperty("password"));
        Transformer docTransformer = TransformerFactory.newInstance().newTransformer();
        try (ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream()) {
            StreamResult result = new StreamResult(byteArrayOutputStream);
            DOMSource source = new DOMSource(requestDoc);
            docTransformer.transform(source, result);
            b = byteArrayOutputStream.toByteArray();
        }
    } catch(IOException | ParserConfigurationException | SAXException | TransformerException exception) {
        LOGGER.error("There was an error loading the properties file", exception);
    }