[英]Validate XML against XSD with SAXParser results in error
我有一個XML文件和一個XSD文件,我想針對XSD驗證XML。
但是我一直收到以下錯誤:
org.xml.sax.SAXParseException; schema_reference.4: Failed to read schema document '/connector/connector.xsd', because 1) could not find the document; 2) the document could not be read; 3) the root element of the document is not <xsd:schema>.
我打印了canonical path
,以確保嘗試使用正確的文件。 但它不會工作。
XML:
<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" attributeFormDefault="unqualified">
<Content>
<commandLine>
<commandCode>A1</commandCode>
<marks><mark><code>mail</code><value>test@test.com</value></mark></marks>
<customerID>1</customerID>
<MessageType>2</MessageType>
</commandLine>
<Antwoordregel></Antwoordregel>
</Content>
</xs:schema>
XSD:
<?xml version="1.0" encoding="UTF-8"?>
<xs:schema id="Message" xmlns="" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
<xs:element name="Content">
<xs:complexType>
<xs:sequence>
<xs:element name="commandLine" minOccurs="1" maxOccurs="1">
<xs:complexType>
<xs:sequence minOccurs="1" maxOccurs="1">
<xs:element name="commandCode" type="xs:string" minOccurs="1" maxOccurs="1"/>
<xs:element name="marks" minOccurs="0" maxOccurs="1">
<xs:complexType>
<xs:sequence >
<xs:element name="mark" minOccurs="1" maxOccurs="unbounded">
<xs:complexType>
<xs:sequence >
<xs:element name="code" type="xs:string" minOccurs="1" maxOccurs="1"/>
<xs:element name="value" type="xs:string" minOccurs="1" maxOccurs="1"/>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="customerID" type="xs:string" minOccurs="0" maxOccurs="1"/>
<xs:element name="MessageType" type="xs:string" minOccurs="0" maxOccurs="1"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="Antwoordregel" minOccurs="1" maxOccurs="1">
<xs:complexType>
<xs:sequence minOccurs="0" maxOccurs="1">
<xs:element name="resultCode" type="xs:string" minOccurs="0" maxOccurs="1"/>
<xs:element name="statusInfo" minOccurs="0" maxOccurs="unbounded">
<xs:complexType>
<xs:sequence>
<xs:element name="transactionInfo" type="xs:string" minOccurs="1" maxOccurs="1"/>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:schema>
我用來驗證的代碼:
static boolean validateAgainstXSD(String xml){
try{
File xsd = new File("connector/connector.xsd");
System.out.println(xsd.getCanonicalPath());
SchemaFactory factory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
Schema schema = factory.newSchema(new StreamSource("/connector/connector.xsd"));
System.out.println(schema.toString());
Validator validator = schema.newValidator();
validator.validate(new StreamSource(xml));
return true;
}catch(Exception exe){
exe.printStackTrace();
return false;
}
}
它將始終返回false。 我試圖通過在線工具使用XSD驗證XML,該工具可以在這里找到: www.utilities-online.info/xsdvalidation 。 該驗證器返回:
Not valid.
Error - Line 2, 122: org.xml.sax.SAXParseException; lineNumber: 2; columnNumber: 122; cvc-elt.1: Cannot find the declaration of element 'xs:schema'.
我該怎么做才能解決這個問題?
任何幫助表示贊賞,
謝謝!
從XML文件中刪除第二行
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
elementFormDefault="qualified" attributeFormDefault="unqualified">
正確的XML是
<?xml version="1.0" encoding="UTF-8"?>
<Content>
<commandLine>
<commandCode>A1</commandCode>
<marks><mark><code>mail</code><value>test@test.com</value></mark></marks>
<customerID>1</customerID>
<MessageType>2</MessageType>
</commandLine>
<Antwoordregel></Antwoordregel>
</Content>
解決方案:
請檢查文件夾結構,然后再次運行。
源代碼:
package com.shashi.mpoole;
import java.io.File;
import javax.xml.XMLConstants;
import javax.xml.transform.stream.StreamSource;
import javax.xml.validation.Schema;
import javax.xml.validation.SchemaFactory;
import javax.xml.validation.Validator;
public class XMLValid {
/**
* @param args
*/
public static void main(String[] args) throws Exception {
// TODO Auto-generated method stub
if(validateAgainstXSD(new File("connector/connector.xml")))
{
System.out.println("Success");
}
else
{
System.out.println("Failure");
}
}
static boolean validateAgainstXSD(File xml){
try{
SchemaFactory factory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
Schema schema = factory.newSchema(new StreamSource("connector/connector.xsd"));
Validator validator = schema.newValidator();
validator.validate(new StreamSource(xml));
return true;
}catch(Exception exe){
exe.printStackTrace();
return false;
}
}
}
文件夾結構
-----Project
------------- src
-------------XMLValid.java
------------- connector
-------------connector.xsd
-------------connector.xml
我可以通過更改名稱空間前綴為“ xs: ”的XSD並將所有實例搜索/替換為“ xsd: ”(以及xmlns:xsd =定義)來解決此類問題。 然后,我將此XSD托管在內部服務器上,並在XML的schemaLocation屬性中指向該服務器,一切正常。
我嘗試此操作的原因是確切的錯誤:
我知道,我知道,這不應該起作用,但確實可以。 如果沒有翻譯,對我不起作用的外部XSD是http://camel.apache.org/schema/spring/camel-spring.xsd
我不確定這是否是SAX或Eclipse中的錯誤。
嘗試使用此代碼來驗證您的XSD,這是避免發生異常的正確標准(這是完整的證明代碼)。
<?xml version="1.0" encoding="UTF-8"?>
<xs:schema id="Message" xmlns="" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
<xs:element name="commandCode" type="xs:string"/>
<xs:element name="code" type="xs:string"/>
<xs:element name="value" type="xs:string" />
<xs:element name="customerID" type="xs:string" />
<xs:element name="MessageType" type="xs:string" />
<xs:element name="resultCode" type="xs:string" />
<xs:element name="transactionInfo" type="xs:string" />
<xs:element name="mark" >
<xs:complexType>
<xs:sequence>
<xs:element ref="code" minOccurs="1" maxOccurs="1"/>
<xs:element ref="value" minOccurs="1" maxOccurs="1"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="marks" >
<xs:complexType>
<xs:sequence>
<xs:element ref="mark" minOccurs="1" maxOccurs="unbounded" />
<!--End element Mark -->
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="commandLine">
<xs:complexType>
<xs:sequence minOccurs="1" maxOccurs="1">
<xs:element ref="commandCode" minOccurs="1" maxOccurs="1"/>
<xs:element ref="marks" minOccurs="0" maxOccurs="1"/>
<xs:element ref="customerID" minOccurs="0" maxOccurs="1"/>
<xs:element ref="MessageType" minOccurs="0" maxOccurs="1"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="statusInfo">
<xs:complexType>
<xs:sequence>
<xs:element ref="transactionInfo" minOccurs="1" maxOccurs="1"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="Antwoordregel" >
<xs:complexType>
<xs:sequence minOccurs="0" maxOccurs="1">
<xs:element ref="resultCode" minOccurs="0" maxOccurs="1"/>
<xs:element ref="statusInfo" minOccurs="0" maxOccurs="unbounded" />
</xs:sequence>
</xs:complexType>
</xs:element>
<!-- First Content Document Element -->
<xs:element name="Content">
<xs:complexType>
<xs:sequence>
<xs:element ref="commandLine" minOccurs="1" maxOccurs="1" />
<xs:element ref="Antwoordregel" minOccurs="1" maxOccurs="1"/>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:schema>
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