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📄 資料內容

import javax.xml.parsers.*;



public class XmlFactoryHolder {

    private static final DocumentBuilderFactory FACTORY;



    static {

        FACTORY = DocumentBuilderFactory.newInstance();

        try {

            // 安全設定（防 XXE）

            FACTORY.setFeature("http://apache.org/xml/features/disallow-doctype-decl", true);

            FACTORY.setFeature("http://xml.org/sax/features/external-general-entities", false);

            FACTORY.setFeature("http://xml.org/sax/features/external-parameter-entities", false);

            FACTORY.setXIncludeAware(false);

            FACTORY.setExpandEntityReferences(false);

        } catch (Exception e) {

            throw new RuntimeException("XML Factory init failed", e);

        }

    }



    public static DocumentBuilder newBuilder() {

        try {

            return FACTORY.newDocumentBuilder(); // 每次要新的 builder

        } catch (Exception e) {

            throw new RuntimeException(e);

        }

    }

}

🔐 Base64 編碼內容

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