java - 将 SAML2 AuthnRequest 转换为 Java 类

Question

我使用 OpenSAML 2.6.5 作为 SAML2 库。我还没有找到有关如何编码表示来自服务提供商的 AuthnRequest 的字符串(XML 文档)的文档。谁能帮我吗？

Answer 1

要读取来自 SP 的请求，您需要对传入的字符串进行编码和解码，如下所示:

    DefaultBootstrap.bootstrap(); //crucial in SAML2
    byte[] decodedSamlAsBytes = Base64.decode(incomingEncodedSaml);

    DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
    DocumentBuilder docBuilder = documentBuilderFactory.newDocumentBuilder();

    Document document = docBuilder.parse(new ByteArrayInputStream(decodedSamlAsBytes));
    Element element = document.getDocumentElement();

    UnmarshallerFactory unmarshallerFactory = Configuration.getUnmarshallerFactory();
    Unmarshaller unmarshaller = unmarshallerFactory.getUnmarshaller(element);
    XMLObject requestXmlObj = unmarshaller.unmarshall(element);
    AuthnRequest request = (AuthnRequest) requestXmlObj;