使用XSD進行XML驗證

Question

我有我想驗證的這種XML產品。

（我把它放在xml.xml文件）

<?xml version="1.0" encoding="UTF-8"?> 
<catalog label="global"> 
    <catalog label="animals" link="/animals.php"> 
    <subject>Subject1</subject> 
    </catalog> 
    <catalog label="animals" link="/animals.php"> 
    <subject>Subject2</subject> 
    </catalog> 
</catalog> 

生成的XSD與this tool：（我把文件xml.xsd）

<?xml version="1.0" encoding="utf-8"?> 
<xsd:schema attributeFormDefault="unqualified" elementFormDefault="qualified" version="1.0" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> 
    <xsd:element name="catalog" type="catalogType" /> 
    <xsd:complexType name="catalogType"> 
    <xsd:sequence> 
     <xsd:element maxOccurs="unbounded" name="catalog" type="catalogType" /> 
    </xsd:sequence> 
    <xsd:attribute name="label" type="xsd:string" /> 
    </xsd:complexType> 
    <xsd:complexType name="catalogType"> 
    <xsd:sequence> 
     <xsd:element name="subject" type="xsd:string" /> 
    </xsd:sequence> 
    <xsd:attribute name="label" type="xsd:string" /> 
    <xsd:attribute name="link" type="xsd:string" /> 
    </xsd:complexType> 
</xsd:schema> 

和我使用的PHP代碼測試它們（在php.php文件）：

<?php 

function libxml_display_error($error) 
{ 
    $return = "<br/>\n"; 
    switch ($error->level) { 
    case LIBXML_ERR_WARNING: 
    $return .= "<b>Warning $error->code</b>: "; 
    break; 
    case LIBXML_ERR_ERROR: 
    $return .= "<b>Error $error->code</b>: "; 
    break; 
    case LIBXML_ERR_FATAL: 
    $return .= "<b>Fatal Error $error->code</b>: "; 
    break; 
    } 
    $return .= trim($error->message); 
    if ($error->file) { 
    $return .= " in <b>$error->file</b>"; 
    } 
    $return .= " on line <b>$error->line</b>\n"; 

    return $return; 
} 

    function checkXMLStructure($xml_object) 
    { 
     $xmlElement = $xml_object->catalog; 
     $dom_sxe = dom_import_simplexml($xmlElement); 

     $dom = new DOMDocument('1.0'); 
     $dom_sxe = $dom->importNode($dom_sxe, true); 
     $dom_sxe = $dom->appendChild($dom_sxe); 

     if (!$dom->schemaValidate(dirname(__FILE__) . '/xml.xsd')) { 
      echo "BAD XML\n"; 
     return; 
     } 

     echo "*GOOD* XML!\n"; 
    } 

// Enable user error handling 
libxml_use_internal_errors(true); 

$xml_object = simplexml_load_file('xml.xml'); 
checkXMLStructure($xml_object); 

// Display Errors 
$errors = libxml_get_errors(); 
foreach ($errors as $error) { 
print libxml_display_error($error); 
} 
libxml_clear_errors(); 

輸出：

PHP Warning: DOMDocument::schemaValidate(): Element '{http://www.w3.org/2001/XMLSchema}complexType': A global complex type definition 'catalogType' does already exist. in /path/php.php on line 13 
PHP Stack trace: 
PHP 1. {main}() /path/php.php:0 
PHP 2. checkXMLStructure() /path/php.php:23 
PHP 3. DOMDocument->schemaValidate() /path/php.php:13 
PHP Warning: DOMDocument::schemaValidate(): Invalid Schema in /path/php.php on line 13 
PHP Stack trace: 
PHP 1. {main}() /path/php.php:0 
PHP 2. checkXMLStructure() /path/php.php:23 
PHP 3. DOMDocument->schemaValidate() /path/php.php:13 
BAD XML 

我需要重寫模式，以便它會注意到主元素中的*許多元素（請注意相同的名稱用法）。

Answer 1

我用QTAssistant產生下面的架構（這將驗證您所提供的XML）：

<?xml version="1.0" encoding="utf-8"?> 
<!--W3C Schema generated by QTAssistant/W3C Schema Refactoring Module (http://www.paschidev.com)--> 
<xsd:schema attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> 
    <xsd:element name="catalog"> 
    <xsd:complexType> 
     <xsd:sequence> 
     <xsd:element maxOccurs="unbounded" name="catalog"> 
      <xsd:complexType> 
      <xsd:sequence> 
       <xsd:element name="subject" type="xsd:string" /> 
      </xsd:sequence> 
      <xsd:attribute name="label" type="xsd:string" use="required" /> 
      <xsd:attribute name="link" type="xsd:string" use="required" /> 
      </xsd:complexType> 
     </xsd:element> 
     </xsd:sequence> 
     <xsd:attribute name="label" type="xsd:string" use="required" /> 
    </xsd:complexType> 
    </xsd:element> 
</xsd:schema> 

你可以從上面開始並調整它，你走。

驗證結果：

如果你想手動修復您的工具創建的XSD，然後確保你重命名只的前兩個catalogType的出現到別的東西（如catalogType1 ）。