java - 配置的XML解析器不会阻止也不限制外部实体的解析

Question

即使我将代码更改为在网络上找到的以下代码，我也始终会再次遇到此错误:

private Document convertInputToDocument(InputStream xml) {
    try {
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        factory.setFeature(XMLConstants.FEATURE_SECURE_PROCESSING, true);
        factory.setFeature("http://xml.org/sax/features/external-general-entities", false);
        factory.setFeature("http://xml.org/sax/features/external-parameter-entities", false);
        factory.setIgnoringElementContentWhitespace(true);
        DocumentBuilder builder = factory.newDocumentBuilder();
    return builder.parse(xml);
    } catch (Exception e) {
        e.printStackTrace();
        return null;
    }
}

Answer 1

其背后的原因是/是因为强化扫描未编译使用的那些软件包，因此看不到我们提供了足够的安全性!