xml注入问题怎么解决

解决xml注入问题的方法包括：1）禁用外部实体引用，2）使用xml schema验证。通过禁用外部实体引用和实施xml schema验证，可以有效防范xml注入攻击，确保应用的安全性。

” + “” + “” + “” + “” + “”; try { DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); 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); DocumentBuilder builder = factory.newDocumentBuilder(); Document document = builder.parse(new InputSource(new StringReader(xmlInput))); SchemaFactory schemaFactory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI); Source schemaSource = new StreamSource(new StringReader(schemaInput)); Schema schema = schemaFactory.newSchema(schemaSource); Validator validator = schema.newValidator(); validator.validate(new StreamSource(new StringReader(xmlInput))); System.out.println(“XML is valid and safe.”); } catch (Exception e) { System.out.println(“XML is not valid or safe: ” + e.getMessage()); } }}