XML validation using DTD

My XML file is as follows:
<?xml version='1.0' encoding='us-ascii'?>

<!DOCTYPE esv SYSTEM "authentication.dtd">
<esv>
<authentication>
<username>esv_dba</username>
<password>esv_dba</password>
<host>rfi_dev</host>
<dbinstance>esv</dbinstance>
</authentication>
</esv>
File "authentication.dtd"
<?xml version='1.0' encoding='us-ascii'?>

<!ELEMENT esv (authentication)>
<!ELEMENT authentication ( username, password, host, dbinstance )>
<!ELEMENT username (#PCDATA)>
<!ELEMENT password (#PCDATA)>
<!ELEMENT host (#PCDATA)>
<!ELEMENT dbinstance (#PCDATA)>
I am using the following code to validate:
SAXParserFactory factory = SAXParserFactory.newInstance();
factory.setValidating(true);
When I remove file "authentication.dtd" from the system I still get the same results. How do I validate my XML using a DTD? I am using the example given in the tutorial at Sun's java site

Thanks for all your answers.
Regarding DTD, I have only the following in my XML file, but I do not get any error.
<?xml version='1.0' encoding='us-ascii'?>

<!DOCTYPE esv SYSTEM "authentication.dtd">
<esv>
</esv>

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XML validation with DTD in java 1.5 not supporting

Hi,
I am facing a problem regarding validation of xml file with DTD tag in it.
I have disabled the parser through setValidating(false) method.
xml file is not parsed in JRE 1.5.but it is parsed in JRE 1.6.
Why this is showing such a behavior?
I have used xerces 2.9.0,xml-api.jar and other jar regarding XML api but still it is giving error.
please help me.
please provide a jar file name or its issue resolution in jre 1.5 or 1.4.

thanks for your prompt reply.
I required that it should be completely disabled in jre 1.5(jdk1.5 or 1.4).
I am using DOM Parsing.I have currently disabled with follwowing method,
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builderFactory.setFeature("http://xml.org/sax/features/validation",
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     builderFactory.setFeature("http://apache.org/xml/features/nonvalidating/load-external-dtd",false);
     builderFactory.setFeature("http://xml.org/sax/features/external-general-entities", false);
     builderFactory.setFeature("http://xml.org/sax/features/external-parameter-entities", false);
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in 1.6 it is working fine but I required that i have to disabled it.but it is giving a error in jre1.5.
Exception in thread "main" java.lang.AbstractMethodError: javax.xml.parsers.DocumentBuilderFactory.setFeature(Ljava/lang/String;Z)V
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I am trying to validate xml against xsd using SAX/DOM parser, both the files are stored as CLOB column in the database. I have the requirement to report all the validation errors and based on some helpful advice/code from the earlier posts in this forum, I have used the following code to validate and report the errors.
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CREATE OR REPLACE AND RESOLVE JAVA SOURCE NAMED as package <package name>;
import java.net.*;
import java.io.*;
import java.util.*;
import java.sql.SQLException;
import oracle.sql.CLOB;
import oracle.xml.parser.schema.*;
import oracle.xml.parser.v2.*;
import org.w3c.dom.*;
public class XMLSchemaVal
public static String validate(CLOB xmlDoc, CLOB xsdDoc)
throws Exception
//Build Schema Object
XSDBuilder builder = new XSDBuilder();
Reader xsdInUnicodeFormat = xsdDoc.getCharacterStream();
XMLSchema schemadoc = (XMLSchema)builder.build(xsdInUnicodeFormat, null);
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Reader xmlInUnicodeFormat = xmlDoc.getCharacterStream();
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SAXParser saxparser_doc = new SAXParser();
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saxparser_doc.setXMLSchema(schemadoc);
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saxparser_doc.setPreserveWhitespace (true);
String returnValue;
try {
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catch (XMLParseException se) {
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returnValue += "<LN: " + se.getLineNumber(i) + ">: " + se.getMessage(i);
//returnValue = "Parser Exception: " + se.getNumMessages();
catch (Exception e) {
returnValue = "NonParserException: " + e.getMessage();
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Function to call the above utility from PL/SQL
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Thanks.

I have the same question. I have an external DTD. I wish to parse an xml file using XMLParser.xmlparse. If I first call XMLParser.xmlparseDTD and then call xmlparse with the XML_FLAG_VALIDATE will the xml automatically be validated against the previously parsed DTD? There is no DOCTYPE declaration in the xml file.
The demo code on OTN for Java is great but has no relation to the code you would use in C++ (no set functions in C++).

XML Validation with DTD... Urgent

Hi all,
I am using java 1.4
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Can anyone give me the code for that.
DTD should be external.
Thanks,
Vinayak.

If you are using Solaris , it has xml validation tool "xmllint", using this you can validate your xml against DTD.
try with "xmllint --help " to see all the option.
Message was edited by:
sasrivas

XML Validation using java for SQL Injection and script validation

I have an input coming from xml file.
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http://www.ibm.com/developerworks/library/x-javaxmlvalidapi.html?ca=dgr-lnxw07Java-XML-Val
http://java.sun.com/j2se/1.5.0/docs/api/javax/xml/validation/package-summary.html
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// define the type of schema - we use W3C:
String schemaLang = "http://www.w3.org/2001/XMLSchema";
SchemaFactory factory = SchemaFactory.newInstance(schemaLang);
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haishai

XML validation using javax.xml.validation

Hello,
I am trying to validate some xml against my xsd.
Here is my xml:
<host>
    <status>Unknown</status>
</host>Here is my xsd:
<?xml version="1.0"?>
                                                                                                                                                             <xsd:schema targetNamespace="blah"
        xmlns:tns="blah"
        xmlns:xsd="blah">
<xsd:simpleType name="Status">
<xsd:restriction base="xsd:string">
<xsd:enumeration value="Unknown"/>
</xsd:restriction>
</xsd:simpleType>
<xsd:element name="host">
   <xsd:complexType>
     <xsd:all>
       <xsd:element name="status" type="tns:Status"/>
     </xsd:all>
   </xsd:complexType>
</xsd:element>
                                                                                                                                                             </xsd:schema>My test code is:
        try
            DocumentBuilder parser = DocumentBuilderFactory.newInstance().newDocumentBuilder();
            Document document = parser.parse(new File("test.xml"));
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            // Load a WXS schema, represented by a Schema instance.
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        catch(Exception e)
            fail("XML validation failed: " + e.getMessage());
        }I get the following error:
ERROR: 'cvc-elt.1: Cannot find the declaration of element 'host'.'
If i replace "type=tns:Status' in the "status" element with just "type=string", it works fine.
Does anyone have any idea what the problem is?
Thank you,
David

To daft_davy:
1. Your XSD document is invalid: the xmlns attribute of schema documents must always have the following value: "http://www.w3.org/2001/XMLSchema"
All other values will result in the following validation error:
org.xml.sax.SAXParseException: s4s-elt-schema-ns: The namespace of element 'schema' must be from the schema namespace, 'http://www.w3.org/2001/XMLSchema'.
Your XSD should look like this:
<?xml version="1.0"?>
<xsd:schema targetNamespace="blah" xmlns:tns="blah" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<xsd:simpleType name="Status">
    <xsd:restriction base="xsd:string">
      <xsd:enumeration value="Unknown"/>
    </xsd:restriction>
</xsd:simpleType>
<xsd:element name="host">
    <xsd:complexType>
      <xsd:all>
        <xsd:element name="status" type="tns:Status"/>
      </xsd:all>
    </xsd:complexType>
</xsd:element>
</xsd:schema>2. Your XML document does not match the XSD schema (even if you use the one above) for the following reasons:
a) The root element of the XML document must be associated with the namespace defined by the targetNamespace attribute of the schema.
b) The "blah" namespace at the element <status> in the XML document has to be undeclared because there is no namespace declaration to this element in the schema document either. There are to ways to do this:
<host xmlns="blah">
<status xmlns="">Unknown</status>
</host>or:
<xxx:host xmlns:xxx="blah">
<status>Unknown</status>
</xxx:host>
To watertownjordan:
The namespace URI can be virtually any string, so you don't need to specify a valid URI to define a namespace.

XML validation with DTD stored in String object

Does anyone know if this is plausible......
I am trying to validate some XML with a DTD... easy enough, right? The catch is that the dtd is NOT stored in a file somewhere and is also not declared in the XML to be validated. It is stored in a String object (as is the XML file to be validated).
To clarify - I want to do something like this... but not sure how to incorporate the DTD.
String dtd = // dtd definition here
String xml = // xml text here (no URI at the top)
SAXParserFactory factory = SAXParserFactory.newInstance();
SAXParser parser = factory.newSAXParser();
DefaultHandler handler = new DefaultHandler(); // DTD handler??
parser.parse(new InputSource(new StringReader(xml.toString())), handler);any help would be greatly appreciated.
thanks in advance,
Terrance

I guess it makes the most sense to make the dtd local to the xml. Therefore I would only have one string with both the xml contents and dtd contents. That is how I am going to approach this unless I hear something different.

XML validation against DTD

Hi,
I have an application that receives XML from an external source. The XML received does not have the XML version and the doc type declaration lines. I want to validate the XML against a DTD.
One dirty way of doing this is to open the XML received and prepend the XML versions and doctype lines to it. And then parse the XML. But is it the right way to do it?
What I would like to know is that does the XML parser provide any API which can tell it to validate an XML document against a certain DTD.

Yes, there is an API to do this. You have to do something like this:
DocumentBuilderFactory dbf =DocumentBuilderFactory.newInstance();
dbf.setValidating(true);
DocumentBuilder db = dbf.newDocumentBuilder();
XMLErrors eh = new XMLErrors(frame);
db.setErrorHandler(eh);
Document doc = db.parse(f);
(where f is the XML file)
In this example, the class XMLErrors is used as the ErrorHandler. XMLErrors extends the DefaultHandler class and provides the user with information about the various error levels. A call to the over-ridden "error" method notifies the user (using a Dialog box) that the document doesn't meet the DTD.
Hope this helps.

XML validation with DTD

Hi Team,
I want to validate the XML content with DTD refered in the XML. I have problem now is my DTD are present in a jar file. How do I need to set systemid to the input source so that it works.
<!DOCTYPE test SYSTEM "test.dtd">
SAXParserFactory factory = SAXParserFactory.newInstance();
factory.setValidating(true);
factory.setNamespaceAware(true);
inputSource.setSystemId("path");
SAXParser parser = factory.newSAXParser();
XMLReader reader = parser.getXMLReader();
reader.setErrorHandler(new XmlValidationErrorHandler());
reader.parse(inputSource);
Regards
Richard

i believe the best way to handle that would be to set the EntityResolver on the XMLReader to your own implementation which loads the DTD from the jar.

XML Validation using custom DTD file

Well, I thought that my problem is about to be a trivial one, but now, I don't think so. I have to develop XML-based protocol over HTTP. XML Document doesn't contain any reference to DTD, but I have some DTDs. I want to validate my XML messages in real time and I want to find some library that allows to do something like that:
SomeXmlValidatingParser s = new SomeXmlValidatingParser(InputStream dtdFileStream);
for(;;)
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}So, the issue is to pass my custom DTD file (it is already loaded to memory) into validating parser.
So, which library have such functionality? And if there are some, could you be so kind to advice some of them?

Well, I've just realized that JDK 1.5 has standard way to validate XMLs using XSD schemas. Ok. But look at the sample
<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:import namespace="http://www.w3.org/XML/1998/namespace"
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<xs:element name="birthdate">
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      <xs:sequence>
        <xs:element name="month" type="xs:string" />
        <xs:element name="day" type="xs:int" />
        <xs:element name="year" type="xs:int" />
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</xs:element>
</xs:schema>Every time I process this schema, it goes to w3c.org... And I wonder if it cause some problems if I delete
<xs:import namespace="http://www.w3.org/XML/1998/namespace"
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XML validation against DTD.. Is it possible?

Hello all,
Sorry for what may be a trivial post, but I'll keep it short..
According to the docs:
"The Validate XML command will validate the XML against the schema defined in the XML file. This command on the context menu is disabled whenever an XML file does not have an XML namespace defined."
I'm used to the XML editor retrieving a DTD from somewhere and validating it against that.. is it possible to do this in JDev?

Unfortunately it's not. We only have support for validating against XML Schemas.
Rob

XML Validation using XDK SAX/DOM Parser

Hello,
I am trying to validate xml against xsd using SAX/DOM parser, both the files are stored as CLOB column in the database. I have the requirement to report all the validation errors and based on some helpful advice/code from the earlier posts in this forum, I have used the following code to validate and report the errors.
The code works fine but for large files it never goes beyond a certain number of errors i.e. getNumMessages() (XMLParseException) never returns value greater than 100 and thus limits the output of the validation errors. Any pointers to suggest change in code or an alternative will be extremely helpful.
Datebase Version : Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production
CREATE OR REPLACE AND RESOLVE JAVA SOURCE NAMED <> as package <package name>;
import java.net.*;
import java.io.*;
import java.util.*;
import java.sql.SQLException;
import oracle.sql.CLOB;
import oracle.xml.parser.schema.*;
import oracle.xml.parser.v2.*;
import org.w3c.dom.*;
public class XMLSchemaVal
public static String validate(CLOB xmlDoc, CLOB xsdDoc)
throws Exception
//Build Schema Object
XSDBuilder builder = new XSDBuilder();
Reader xsdInUnicodeFormat = xsdDoc.getCharacterStream();
XMLSchema schemadoc = (XMLSchema)builder.build(xsdInUnicodeFormat, null);
//Build XML Object
Reader xmlInUnicodeFormat = xmlDoc.getCharacterStream();
// Genereate the SAX
SAXParser saxparser_doc = new SAXParser();
// Set Schema Object for Validation
saxparser_doc.setXMLSchema(schemadoc);
saxparser_doc.setValidationMode(XMLParser.SCHEMA_VALIDATION);
saxparser_doc.setPreserveWhitespace (true);
String returnValue;
try {
saxparser_doc.parse (xmlInUnicodeFormat);
returnValue = "The input XML parsed without errors.\n";
catch (XMLParseException se) {
returnValue = "Parser Exception: ";
for (int i=0 ; i < se.getNumMessages(); i++)
returnValue += "<LN: " + se.getLineNumber(i) + ">: " + se.getMessage(i);
//returnValue = "Parser Exception: " + se.getNumMessages();
catch (Exception e) {
returnValue = "NonParserException: " + e.getMessage();
return returnValue;
Function to call the above utility from PL/SQL
CREATE OR REPLACE FUNCTION F_XMLSCHEMAVALIDATION (P_XML IN clob ,P_XSD IN clob) RETURN VARCHAR2 IS
LANGUAGE JAVA NAME XMLSchemaVal.validate(oracle.sql.CLOB,oracle.sql.CLOB) return java.lang.String';
Thanks.

Got the answer !!!
NetBeans it self support generation of dtd file based on XML file.
Open XML file and right click on the code block. Select option to generate dtd file.
This is the drtd file it has generated..
<?xml version='1.0' encoding='UTF-8'?>

<!ELEMENT book (person)*>

<!ELEMENT person (age|last|first)*>

<!ELEMENT first (#PCDATA)>

<!ELEMENT last (#PCDATA)>

<!ELEMENT age (#PCDATA)>

XML validation using Oracle XML parser v2

Not sure if this is the right forum for this question as I didn't found any.
I had a tough time trying to build an XMLSchema (Oracle XML Parser V2) object from the input schema having include/import. Actually I am working on a Java program to validate the input xml with input schema using Oracle XML parser v2 api.
The issue is that the code doesn't work for schema that has some "include" in it. The code is working fine for the schema without any import/include. Here is the lines of code -
XSDBuilder builder = new XSDBuilder();
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I also tried creating the EntityResolver to specify the path of included schema. But that doesn't solves the problem.
I am not sure whether parser is able to locate the included schema or not.The main schema and included schema are all in same folder. The included schema is perfectly fine and has no errors.
Please help if you have encountered this issue and resolved it. I will really appreciate any pointers or clue to solve this issue.
Thanks.

Thanks for the reply. But it does not seem to be working. Am I missing something
I put <TrxDate xsi:nil="true"/> but still getting error.
Here's my xsd:
<?xml version="1.0" encoding="ISO-8859-1"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
elementFormDefault="qualified">
<xsd:element name="TrxDate" type="xsd:date" nillable="true" />
XML:
<?xml version="1.0" encoding="UTF-8" ?>
<ServiceRequest>
<TrxDate nil="true"/>
</ServiceRequest>

XML Validation on HTTP Adaptor

Hi,
We are implementing a HTTP sender channel on PI 7.11 and requires XML validation to be performed upon receiving. The validation is required to check if all the tags are closed and ended properly. Failing to do so, an error XML will be generated and subsequently send back to the sender.
There is a blog /people/william.li/blog/2009/03/19/adapter-user-module-for-http-adapter detailing the development of user module for HTTP channel but we remain clueless on how can we change it to suit our needs. The XML messages can be of different format (different XSD) thus we need to make this as generic as possible.
Ultimately the intention is to prevent XML to fail at later stage within PI and stopped the communication. Hope any experts out there can point us to the right direction.
Thanks in advance!
Regards,
Wai Xin

Use SOAP sender channel and do it with java.
Chcek the possibility of creating fault message with custom validation code in java
check this thread stefans reply on same thing .it will give you a direction how to proceed with it.Hope it helps you
How to send the SOAP Fault Message to the Web Service Consumer
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XML Validation using JAVA

Validating an XML document using external DTD?

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I want to validate an XML file using external DTD with SAX parser.
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I dont think we can set a DTD file throug java while
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XML validation using DTD

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