[英]XML validation against xsd's in Java
Issue: We have several services that generate a fair amount of XML via XSLT.问题:我们有几个服务通过 XSLT 生成大量 XML。 We don't have any XSD's.我们没有任何 XSD。 I have taken the time to create the XSD's and want to confirm they are correct.我花时间创建了 XSD 并想确认它们是正确的。 Currently I am attempting to verify that the XSD and the XML are validate correctly.目前我正在尝试验证 XSD 和 XML 是否正确验证。
Problem: I have an xsd(common.xsd) that is imported into all the xsd's.问题:我有一个 xsd(common.xsd),它被导入到所有的 xsd 中。 It is not publicly hosted yet, so only recently I found putting the full path of the common.xsd in the AccountList.xsd I was able to get further.它尚未公开托管,所以直到最近我才发现将 common.xsd 的完整路径放在 AccountList.xsd 中,我能够更进一步。 I am now receiving the following:我现在收到以下信息:
org.xml.sax.SAXParseException; org.xml.sax.SAXParseException; lineNumber: 9;行号:9; columnNumber: 70;列数:70; s4s-att-invalid-value: Invalid attribute value for 'type' in element 'element'. s4s-att-invalid-value:元素“element”中“type”的无效属性值。 Recorded reason: UndeclaredPrefix: Cannot resolve 'common:response' as a QName: the prefix 'common' is not declared.记录的原因:UndeclaredPrefix:无法将“common:response”解析为 QName:未声明前缀“common”。
I am at a loss.我很茫然。 I cannot find an example that has been asked in forums or a source code snippet that gets a success.我找不到在论坛中提出的示例或成功的源代码片段。 I'd appreciate any assistance in getting this to successfully validate my xml.我很感激能帮助我成功验证我的 xml。
common.xsd常见的.xsd
<xs:schema version="1.0" elementFormDefault="qualified" attributeFormDefault="unqualified"
xmlns="http://www.myorg.com/xsd/gen_fin"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://www.myorg.com/xsd/gen_fin">
<xs:complexType name="response">
<xs:sequence>
<xs:element name="code" type="xs:string"/>
<xs:element name="description" type="xs:string"/>
</xs:sequence>
</xs:complexType>
</xs:schema>
AccountList.xsd帐户列表.xsd
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<xs:schema version="1.0" elementFormDefault="qualified" attributeFormDefault="unqualified"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:tns="http://www.myorg.com/xsd/accList"
targetNamespace="http://www.myorg.com/xsd/accList"
xmlns:common="http://www.myorg.com/xsd/gen_fin">
<xs:import namespace="http://www.myorg.com/xsd/gen_fin"
schemaLocation="/home/me/dev/projects/svn/myorg/xsd/src/main/resources/bg/gen_resp/common.xsd"/>
<xs:element name="fundamo">
<xs:complexType>
<xs:sequence>
<xs:element name="response" type="common:response" minOccurs="1" maxOccurs="1"/>
<xs:element name="transaction" type="tns:transaction" minOccurs="0" maxOccurs="1"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:complexType name="transaction">
<xs:sequence>
<xs:element name="transactionRef" type="xs:string"/>
<xs:element name="dateTime" type="xs:string"/>
<xs:element name="userName" type="xs:string"/>
</xs:sequence>
</xs:complexType>
</xs:schema>
Test.java测试.java
final InputStream commonXsdStream = getXsd(BG_GEN_RESP_XSD_PATH, COMMON);
ClassPathResource fullXsdListing = new ClassPathResource(BG_GEN_RESP_XSD_PATH);
File[] allXsds = fullXsdListing.getFile().listFiles();
for (File currentXsd : allXsds) {
final int filenameLength = currentXsd.getName().length();
final String filenameSanExt = currentXsd.getName().substring(0, filenameLength - 4);
if (!IGNORE.contains(filenameSanExt)) {
final InputStream xsltStream = getXslt(BG_GEN_RESP_XSLT_PATH, filenameSanExt);
final InputStream xsdStream = getXsd(BG_GEN_RESP_XSD_PATH, filenameSanExt);
TransformerFactory xmlTransformer = TransformerFactory.newInstance();
Templates xsltTemplate = xmlTransformer.newTemplates(new StreamSource(xsltStream));
final XSLToXMLConvertor converter = new XSLToXMLConvertor();
String generatedXml = converter.getXML(inputData, xsltTemplate);
LOG.info(generatedXml);
SchemaFactory schemaFactory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
Schema schema = schemaFactory.newSchema(lnew StreamSource(xsdStream));
Validator validator = schema.newValidator();
validator.validate(new StreamSource(new StringReader(generatedXml)));
/*
DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
docBuilderFactory.setNamespaceAware(true);
docBuilderFactory.setValidating(true);
DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder();
docBuilder.parse(new InputSource(new ByteArrayInputStream(generatedXml.getBytes("utf-8"))));
*/
}
}
}
It's usually a good idea to have a namespace and targetNamespace defined, although as Petru Gardea pointed out, not strictly necessary.定义命名空间和目标命名空间通常是个好主意,尽管正如 Petru Gardea 指出的那样,并非绝对必要。 Here's a combination that absolutely works:这是一个绝对有效的组合:
AccountList.xsd帐户列表.xsd
<xs:schema
version="1.0"
elementFormDefault="qualified"
attributeFormDefault="unqualified"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:tns="http://www.myorg.com/xsd/accList"
targetNamespace="http://www.myorg.com/xsd/accList"
xmlns:common="http://www.myorg.com/xsd/gen_fin">
<xs:import namespace="http://www.myorg.com/xsd/gen_fin" schemaLocation="common.xsd" />
<xs:element name="fundamo">
<xs:complexType>
<xs:sequence>
<xs:element name="response" type="common:response"
minOccurs="1" maxOccurs="1" />
<xs:element name="transaction" type="tns:transaction"
minOccurs="0" maxOccurs="1" />
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:complexType name="transaction">
<xs:sequence>
<xs:element name="transactionRef" type="xs:string" />
<xs:element name="dateTime" type="xs:string" />
<xs:element name="userName" type="xs:string" />
</xs:sequence>
</xs:complexType>
</xs:schema>
common.xsd常见的.xsd
<xs:schema
version="1.0"
elementFormDefault="qualified"
attributeFormDefault="unqualified"
xmlns="http://www.myorg.com/xsd/gen_fin"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://www.myorg.com/xsd/gen_fin">
<xs:complexType name="response">
<xs:sequence>
<xs:element name="code" type="xs:string" />
<xs:element name="description" type="xs:string" />
</xs:sequence>
</xs:complexType>
</xs:schema>
NewFile.xml (based on that schema): NewFile.xml(基于该架构):
<tns:fundamo xmlns:p="http://www.myorg.com/xsd/gen_fin"
xmlns:tns="http://www.myorg.com/xsd/accList" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.myorg.com/xsd/accList AccountList.xsd ">
<tns:response>
<p:code>p:code</p:code>
<p:description>p:description</p:description>
</tns:response>
</tns:fundamo>
ValidateXml.java:验证Xml.java:
import java.io.File;
import java.io.IOException;
import javax.xml.XMLConstants;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.dom.DOMSource;
import javax.xml.validation.Schema;
import javax.xml.validation.SchemaFactory;
import javax.xml.validation.Validator;
import org.w3c.dom.Document;
import org.xml.sax.SAXException;
public class ValidateXml {
/**
* @param args
*/
public static void main(String[] args) {
SchemaFactory schemaFactory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
try {
DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
documentBuilderFactory.setNamespaceAware(true);
DocumentBuilder parser = documentBuilderFactory.newDocumentBuilder();
Document document = parser.parse(new File("NewFile.xml"));
Schema schema = schemaFactory.newSchema(new File("AccountList.xsd"));
Validator validator = schema.newValidator();
validator.validate(new DOMSource(document));
} catch (SAXException e) {
e.printStackTrace();
} catch (ParserConfigurationException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
You error related to "cannot find the declaration of element" is usually related to the XML document not being namespace-aware.与“找不到元素声明”相关的错误通常与 XML 文档不具有命名空间感知能力有关。 Verify that your path to both XSDs is correct, and go back to the block of code where you build an XML document that is namespace-aware.验证您到两个 XSD 的路径是否正确,然后返回到构建可识别名称空间的 XML 文档的代码块。
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