使用Apache xercesc验证XML文件的Schema-优快云博客

本文链接：https://blog.youkuaiyun.com/rabbit729/article/details/3847630

本文介绍了一个使用Xerces C++库进行XML文件及其对应XSD模式验证的示例程序。通过命令行参数传递XML文件及XSD文件路径，程序能够检查XML文件是否符合指定的XSD模式。

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#include <iostream> #include <list> #include <string> #include <xercesc/util/OutOfMemoryException.hpp> #include <xercesc/dom/DOM.hpp> #include <xercesc/parsers/XercesDOMParser.hpp> #include <xercesc/framework/XMLGrammarDescription.hpp> #include <xercesc/sax/ErrorHandler.hpp> #include <xercesc/sax/SAXParseException.hpp> using std::cerr; using std::endl; XERCES_CPP_NAMESPACE_USE class StrX { char* fLocalForm; public : StrX(const XMLCh* const toTranscode) { fLocalForm = XMLString::transcode(toTranscode); } ~StrX() { XMLString::release(&fLocalForm); } const char* localForm() const { return fLocalForm; } }; std::ostream& operator<<(std::ostream& target, const StrX& toDump) { target << toDump.localForm(); return target; } class DOMTreeErrorReporter : public ErrorHandler { public: void warning(const SAXParseException& toCatch) {} void resetErrors() {} void DOMTreeErrorReporter::error(const SAXParseException& toCatch) { cerr << "Error at file /"" << StrX(toCatch.getSystemId()) << "/", line " << toCatch.getLineNumber() << ", column " << toCatch.getColumnNumber() << endl << " Message: " << StrX(toCatch.getMessage()) << endl; } void DOMTreeErrorReporter::fatalError(const SAXParseException& toCatch) { cerr << "Fatal Error at file /"" << StrX(toCatch.getSystemId()) << "/", line " << toCatch.getLineNumber() << ", column " << toCatch.getColumnNumber() << endl << " Message: " << StrX(toCatch.getMessage()) << endl; } }; // --------------------------------------------------------------------------- int main(int argc, const char** argv) { try { XMLPlatformUtils::Initialize(); } catch(const XMLException& e) { StrX tmp_e(e.getMessage()); cerr << "Xerces initialization error: " << tmp_e.localForm() << endl; return 2; } if ( argc < 1 ) { cerr << "usage: schema-check <xml-file> [<schema-file> ...]" << endl; return 3; } XercesDOMParser *parser = new XercesDOMParser; DOMTreeErrorReporter *errReporter = new DOMTreeErrorReporter(); parser->setErrorHandler(errReporter); parser->setDoNamespaces(true); parser->setCreateEntityReferenceNodes(true); parser->useCachedGrammarInParse(true); if ( argc > 2 ) { parser->setDoSchema(true); parser->setDoValidation(true); parser->setValidationSchemaFullChecking(true); for ( int i = 2; i < argc; i++ ) { if ( parser->loadGrammar(argv[i], Grammar::SchemaGrammarType, true) == 0 ) { cerr << "Error loading grammar " << std::string(argv[i]) << endl; return 4; } } } bool errorsOccured = true; try { parser->parse(argv[1]); errorsOccured = false; } catch ( const OutOfMemoryException& ) { cerr << "Out of memory exception." << endl; } catch ( const XMLException& e ) { cerr << "An error occurred during parsing" << endl << " Message: " << StrX(e.getMessage()) << endl; } catch ( const DOMException& e ) { const unsigned int maxChars = 2047; XMLCh errText[maxChars + 1]; cerr << endl << "DOM Error during parsing: '" << std::string(argv[1]) << "'" << endl << "DOM Exception code is: " << e.code << endl; if ( DOMImplementation::loadDOMExceptionMsg(e.code, errText, maxChars) ) cerr << "Message is: " << StrX(errText) << endl; } catch (...) { cerr << "An error occurred during parsing." << endl; } if (!errorsOccured) { cerr<<"验证成功"<<endl; return 1; } else { cerr<<"验证失败"<<endl; return 0; } }

-------------------------booklist.xsd----------------------------------------

<?xml version="1.0" encoding="GB2312"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified">
<xs:element name="booklist">
  <xs:complexType>
   <xs:sequence>
    <xs:element name="book" type="bookType" maxOccurs="unbounded"/>
   </xs:sequence>
  </xs:complexType>
</xs:element>
<xs:complexType name="bookType">
  <xs:sequence>
   <xs:element name="ISBN" type="xs:string"/>
   <xs:element name="title" type="xs:string"/>
   <xs:element name="authorlist" type="authorlistType"/>
   <xs:element name="price" type="xs:decimal"/>
  </xs:sequence>
  <xs:attribute name="classify" use="required">
   <xs:simpleType>
    <xs:restriction base="xs:string">
     <xs:enumeration value="社会科学"/>
     <xs:enumeration value="自然科学"/>
    </xs:restriction>
   </xs:simpleType>
  </xs:attribute>
</xs:complexType>
<xs:complexType name="authorlistType">
  <xs:sequence maxOccurs="4">
   <xs:element name="author" type="xs:string"/>
  </xs:sequence>
</xs:complexType>
</xs:schema>

-------------------------------booklist.xml--------------------------------

<?xml version="1.0" encoding="GB2312"?>
<booklist xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="booklist.xsd">
<book classify="自然科学">
  <ISBN>7-302-12066-8</ISBN>
  <title>JAVA使用教程</title>
  <authorlist>
   <author>Herbert Scihldt</author>
   <author>马海军</author>
  </authorlist>
  <price>64.00</price>
</book>
<book classify="社会科学">
  <ISBN>7-5037-1978</ISBN>
  <title>投资学</title>
  <authorlist>
   <author>张中华</author>
   <author>谢老三</author>
  </authorlist>
  <price>19.00</price>
</book>
</booklist>
使用如下命令行参数验证booklist.xml是否符合booklist.xsd