Re: Unable to validate a JDOM document or element with the Schema class of jdom contrib package.

Hi,

You only have the schema validation API in the classpath (isorelax.jar) but no 
implementation. None is provided with JDOM contrib.

You can use Sun's Multi-Schema XML Validator that can be found at 
https://msv.dev.java.net/

Regards,

Laurent


John Dous a écrit :
> Unable to validate a JDOM document or element with the Schema class of 
> jdom contrib package.
> 
> **I make a customValidation method and i try to Validate a JDOM 
> document. the problem is that
> 
> *e*very time I get an exception "Failed to parse schema 
> "file:/C:/messages.xsd": no validation engine available *for*: 
> http://www.w3.org/2001/XMLSchema."
> 
> I have try to Parse the xsd with following String values but all the 
> times I failed.
> 
> String uriFile = "C:/messages.xsd"
> 
> String uriFile = "file:/C:/messages.xsd"
> 
> Below is the code and the xml,xsd.
> 
> *public* *void* customValidation() *throws* JDOMException, IOException{
> 
>      
> 
>       String xmlFile = "C:/messages.xml";
> 
>       SAXBuilder builder = *new* SAXBuilder();
> 
>       Document doc = builder.build(*new* FileInputStream(xmlFile));
> 
>              
> 
>       String schemaFile = "C:/messages.xsd";
> 
>       File file = *new* File(schemaFile);
> 
>            
> 
>       String uriFile = file.toURL().toString();
> 
>       Schema schema = Schema./parse/( uriFile, Schema./W3C_XML_SCHEMA/);
> 
>            
> 
>       List errors = schema.validate(doc);
> 
>             *if* (errors != *null*) {
> 
>           // Validation errors
> 
>           *for* (Iterator i=errors.iterator(); i.hasNext(); ) {
> 
>                ValidationError e = (ValidationError)(i.next());
> 
>                System./out/.println(e);
> 
>             }
> 
>             }
> 
>           // Else: No error, document is valid.
> 
>       }
> 
>  
> 
> messages.xml
> 
> <?xml version="1.0" encoding="UTF-8"?>
> <messages xmlns="http://www.w3schools.com" 
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
> xsi:schemaLocation="http://www.w3schools.com messages.xsd">
> 
>   <message id="first">
>     <english>first msg</english>
>     <greek>first msg.</greek>
>   </message>
>  
>   <message id="second">
>     <english>second msg</english>
>     <greek>second msg.</greek>
>   </message>
>  
> </messages>
> 
> 
> messages.xsd:
> 
> <?xml version="1.0"?>
> 
> <xs:schema
> xmlns:xs="http://www.w3.org/2001/XMLSchema"
> xmlns="http://www.w3schools.com"
> targetNamespace="http://www.w3schools.com"
> elementFormDefault="qualified">
> 
> <xs:element name="messages" >
>   <xs:complexType>
>     <xs:sequence>
>         <xs:element name="message" maxOccurs="unbounded">
>             <xs:complexType>
>                 <xs:sequence>
>                     <xs:element name="english" type="xs:string" 
> minOccurs="0" />
>                     <xs:element name="greek" type="xs:string" 
> minOccurs="0" />
>                 </xs:sequence>
>                 <xs:attribute name="id" type="xs:string" />
>             </xs:complexType>
>         </xs:element>
>     </xs:sequence>
>   </xs:complexType>
> </xs:element>
> </xs:schema>
> 
> Thanks in advance.
> 
> John Dousaitis.
> 
> 
> 
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