Java XML parsing with Xerces in Eclipse using Oxygen problem

Hey everybody,
Got me a stickler of a prob here and i'm hoping sum one out there will be able to help. I am trying to parse XML files into JDom objects so i can use them in the rest of my project with ease, but i'm having trouble parsing anything wihtout getting these errors
Error: URI = /filelocat/personal-schema.xml", Line = "3", : Document root element "personnel", must match DOCTYPE root "null".
Error: URI = /filelocat/personal-schema.xml", Line = "3", : Document is invalid: no grammar found.
Error: URI = /filelocat/personal-schema.xml", Line = "3", : cvc-complex-type.3.2.2: Attribute 'xsi:noNamespaceSchemaLocation' is not allowed to appear in element 'personnel'.
Error: URI = /filelocat/personal-schema.xml", Line = "3", : cvc-complex-type.3.2.2: Attribute 'xsi:noNamespaceSchemaLocation' is not allowed to appear in element 'personnel'.
The are the files are ones that come in Oxygens samples folder so they should be correct. The code is as follows
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setValidating(true);
SchemaFactory sFact = SchemaFactory.newInstance("http://www.w3.org/2001/XMLSchema");
Schema schema = sFact.newSchema(schemaFile);
factory.setSchema(schema);
DocumentBuilder dommer = factory.newDocumentBuilder();
Document doco = dommer.parse(xmlFile.getAbsolutePath());None of these errors appears to be fatal, i can still use the doco object and extract the information i require, but i want to understand where the errors are coming from. There must be a parser setting or sumthing i've missed somewhere.
Can anyone help?
Any ideas/surgestions/critique welcome.
Tom

When we are parsing this xml: "<CustomerInfo><VCID/>77888</CustomerInfo>".
See comments in following code.
Element docEle = d.getDocumentElement(); // Returns "CustomerInfo" element node.
NodeList childNodes2 = docEle.getChildNodes(); // Returns two nodes: <VCID/> element node and 77888 text node.
Node item4 = childNodes2.item( 0 ); // First node (element node) of the "CustomerInfo" tag. <VCID/>
Node item5 = childNodes2.item( 1 ); // Second node (text node) of the "CustomerInfo" tag is 77888. Look this text is not child of VCID, it's second child node of "CustomerInfo" tag.
NodeList childNodes3 = item4.getChildNodes(); // Returns null because <VCID/> node is empty.
String nodeValue = item5.getNodeValue(); // Returns 77888 ( text node ). Regards,
Sławomir Wojtasiak

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<connection support="no" />
<row-element support="yes" destag="row-name" />
<rowset-element support="yes" destag="rowset-name" />
<id-attribute support="no" />
<tag-case support="no" />
<null-indicator support="no" />
<cnv:addattr name="debug" value="yes" />
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<responsedata support="no" child="yes" />
<responsedata2 support="no" child="yes" />
<page destag="page1" support="yes">
<connection support="no" /> <debug destag="MyDebug" />
<cnv:addattr name="tt" value="t1" />
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<xsql:set-page-param support="yes" destag="setpageparam">
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<cnv:roottag support="yes" destag="xfw:script">
<cnv:addattr name="debug" value="no" />
<cnv:addattr name="xmlns:xfw" value="urn:scb-xfw-v2" />
</cnv:roottag>
<cnv:roottag support="yes" destag="xfw:script">
<cnv:addattr name="debug" value="no" />
<cnv:addattr name="xmlns:xfw" value="urn:scb-xfw-v2" />
</cnv:roottag>
<xsql:query support="yes" destag="xfw:genxml">
<connection support="no" />
<row-element support="yes" destag="row-name" />
<rowset-element support="yes" destag="rowset-name" />
<id-attribute support="no" />
<tag-case support="no" />
<null-indicator support="no" />
<cnv:addattr name="debug" value="yes" />
<cnv:addattr name="Attribute1" value="Value1" />
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<responsedata support="no" child="yes" />
<responsedata2 support="no" child="yes" />
<page destag="page1" support="yes">
<connection support="no" /> <debug destag="MyDebug" />
<cnv:addattr name="tt" value="t1" />
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<name destag="myname" />
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<name destag="mylocalname" />
</xsql:set-page-param-local>
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import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
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Regards
Bunny

I suggest you create a DTD or a XSD file to validate your existing XML document, because it's easier that i looks, and will help in future changes.
If you want to do it in Java code, you can always store each line of the XML file in some form (like a class) in a List, and the each time you read a line, you compare with everything on the list.
But don't go that way, make a XSD file

JAVA XML Parsing

i have an xml sturcture as shown below:
<cnv:conversion xmlns:cnv="urn:ssis-conv" xmlns:xsql="urn:oracle-xsql">
     <cnv:roottag support="yes" destag="xfw:script">
          <cnv:addattr name="debug" value="no" />
          <cnv:addattr name="xmlns:xfw" value="urn:scb-xfw-v2" />
     </cnv:roottag>
     <xsql:query support="yes" destag="xfw:genxml">
          <connection support="no" />
          <row-element support="yes" destag="row-name" />
          <rowset-element support="yes" destag="rowset-name" />
          <id-attribute support="no" />
          <tag-case support="no" />
          <null-indicator support="no" />
          <cnv:addattr name="debug" value="yes" />
          <cnv:addattr name="Attribute1" value="Value1" />
     </xsql:query>
     <xsql:no-rows-query support="no" child="no" />
     <responsedata support="no" child="yes" />
     <responsedata2 support="no" child="yes" />
     <page destag="page1" support="yes">
          <connection support="no" /> <debug destag="MyDebug" />
          <cnv:addattr name="tt" value="t1" />
     </page>
     <xsql:set-page-param support="yes" destag="setpageparam">
          <name destag="myname" />
     </xsql:set-page-param>
     <xsql:set-page-param-local support="yes" destag="Myset-page-param-local">
          <name destag="mylocalname" />
     </xsql:set-page-param-local>
</cnv:conversion>
I want this xml to be validated by the dom parser which i had done and its showing it as valid XML.
If there are any repeating tags like:
<cnv:conversion xmlns:cnv="urn:ssis-conv" xmlns:xsql="urn:oracle-xsql">
<cnv:conversion xmlns:cnv="urn:ssis-conv" xmlns:xsql="urn:oracle-xsql">
     <cnv:roottag support="yes" destag="xfw:script">
          <cnv:addattr name="debug" value="no" />
          <cnv:addattr name="xmlns:xfw" value="urn:scb-xfw-v2" />
     </cnv:roottag>
     <xsql:query support="yes" destag="xfw:genxml">
          <connection support="no" />
          <row-element support="yes" destag="row-name" />
          <rowset-element support="yes" destag="rowset-name" />
          <id-attribute support="no" />
          <tag-case support="no" />
          <null-indicator support="no" />
          <cnv:addattr name="debug" value="yes" />
          <cnv:addattr name="Attribute1" value="Value1" />
     </xsql:query>
     <xsql:no-rows-query support="no" child="no" />
     <responsedata support="no" child="yes" />
     <responsedata2 support="no" child="yes" />
     <page destag="page1" support="yes">
          <connection support="no" /> <debug destag="MyDebug" />
          <cnv:addattr name="tt" value="t1" />
     </page>
     <xsql:set-page-param support="yes" destag="setpageparam">
          <name destag="myname" />
     </xsql:set-page-param>
     <xsql:set-page-param-local support="yes" destag="Myset-page-param-local">
          <name destag="mylocalname" />
     </xsql:set-page-param-local>
</cnv:conversion>
</cnv:conversion>
or like this....................
<cnv:conversion xmlns:cnv="urn:ssis-conv" xmlns:xsql="urn:oracle-xsql">
     <cnv:roottag support="yes" destag="xfw:script">
          <cnv:addattr name="debug" value="no" />
          <cnv:addattr name="xmlns:xfw" value="urn:scb-xfw-v2" />
     </cnv:roottag>
<cnv:roottag support="yes" destag="xfw:script">
          <cnv:addattr name="debug" value="no" />
          <cnv:addattr name="xmlns:xfw" value="urn:scb-xfw-v2" />
     </cnv:roottag>
     <xsql:query support="yes" destag="xfw:genxml">
          <connection support="no" />
          <row-element support="yes" destag="row-name" />
          <rowset-element support="yes" destag="rowset-name" />
          <id-attribute support="no" />
          <tag-case support="no" />
          <null-indicator support="no" />
          <cnv:addattr name="debug" value="yes" />
          <cnv:addattr name="Attribute1" value="Value1" />
     </xsql:query>
     <xsql:no-rows-query support="no" child="no" />
     <responsedata support="no" child="yes" />
     <responsedata2 support="no" child="yes" />
     <page destag="page1" support="yes">
          <connection support="no" /> <debug destag="MyDebug" />
          <cnv:addattr name="tt" value="t1" />
     </page>
     <xsql:set-page-param support="yes" destag="setpageparam">
          <name destag="myname" />
     </xsql:set-page-param>
     <xsql:set-page-param-local support="yes" destag="Myset-page-param-local">
          <name destag="mylocalname" />
     </xsql:set-page-param-local>
</cnv:conversion>
or any row is being repeated it not a valid XML....
my java code is :
My java code is shown below :
import java.io.*;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.*;
public class sample2
     public void processXML(String path)
          File docFile=new File(path);
          Document doc=null;
          try
               DocumentBuilderFactory dbf=DocumentBuilderFactory.newInstance();                     DocumentBuilder db=dbf.newDocumentBuilder();
               doc=db.parse(docFile);
          catch(IOException ioe)
               System.out.println("cant find file");
          catch(Exception e)
               System.out.println("Error has occured");
          Element root=doc.getDocumentElement();
          NodeList children=root.getChildNodes();
          StringBuffer sbuf=new StringBuffer();
          for(Node child=root.getFirstChild(); child!=null; child=child.getNextSibling())
               if(child.getNodeType()==child.TEXT_NODE)                sbuf.append(child.getNodeValue()) ;
               else if(child.getNodeType()==child.ELEMENT_NODE)                if(child.getChildNodes()!=null)
               getnodes(child, sbuf);
public void getnodes(Node Child, StringBuffer sbf)
     NodeList children=Child.getChildNodes();
     if(children.getLength() > 0)
          System.out.println(children.getLength() + Child.getNodeName());
     for(Node child=Child.getFirstChild(); child!=null;child=child.getNextSibling())
          if(child.getNodeType()==child.TEXT_NODE) sbf.append((child.getNodeValue()).trim());
     else if(child.getNodeType()==child.ELEMENT_NODE)
     if(child.getChildNodes()!=null)
          getnodes(child, sbf); sbf.append(";");
public static void main(String[] args)
     testxml txml=new testxml(); txml.processXML("E:\\Naresh\\conversion_fxsql.xml");
can any body tell me how to validate the repeating tags with the given code.... if any one of the tags are repeating it should raise an exception thats its not a valid xml
Thanks in advance
Regards
Bunny

The first problem about this document is that it contains a space at the very first position whereas <?xml... must appear at the very beginning of a document. I think this was the cause of the parsing fault.
Also you have a dash before the root element of the document, which is illegal.

XML parsing with DOM

I'm using xerces to parse an XML file and am running in to trouble. Do you have to parse child nodes before attributes? I do this in every node except for one called "table" in my parser. However, I have an abstract class called "Table" that is subclassed by Table1D and Table2D, and I need to parse the attributes to know which to instantiate.
The problem is, I have a child node called scale. For some reason, scale is being parsed as if it were a table.
Here is a look at my unmarshallTable method. Ignore the lack of exception handling.
private Table unmarshallTable(Node tableNode) {
     Table table;
        if (unmarshallAttribute(tableNode, "type", "unknown").equals("3D")) {
            table = new Table3D();
        } else if (unmarshallAttribute(tableNode, "type", "unknown").equals("2D")) {
        } else {
            //exception
            return null;
        table.setName(unmarshallAttribute(tableNode, "name", "unknown"));
        if (table.getType().equals("2D")) {
            ((Table2D)table).setFlipX(Boolean.parseBoolean(unmarshallAttribute(tableNode, "flipx", "unknown")));
     Node n;
     NodeList nodes = tableNode.getChildNodes();
     for (int i = 0; i < nodes.getLength(); i++) {
         n = nodes.item(i);
         if (n.getNodeType() == Node.ELEMENT_NODE) {
          if (tableNode.getNodeName().equals("table")) {
              if (table.getType().equals("2D")) {
                        if (unmarshallTable(n).getType().equals("Static Y Axis")) {
                            ((Table2D)table).setStaticYAxis((Table1D)unmarshallTable(n));
                    } else if (table.getType().equals("3D")) {
                        if (unmarshallTable(n).getType().equals("X Axis")) {
                            ((Table3D)table).setXAxis((Table1D)unmarshallTable(n));
                        } else if (unmarshallTable(n).getType().equals("Y Axis")) {
                            ((Table3D)table).setYAxis((Table1D)unmarshallTable(n));
                } else if (tableNode.getNodeName().equals("scaling")) {
                    table.setScale(unmarshallScale(n));
          } else {
              // unexpected element in Article
         } else {
          // unexpected node-type in Article
     return table;
    }

Doh! I got it.
if (tableNode.getNodeName().equals("table")) {
should be
if (n.getNodeName().equals("table")) {

XML Parsing with namespace

Hi All,
I have a requirement to convert XML to itab to be processed further.
I couldn't parse the XML which contains ns0 (namespace?) as following:
<ns0:OrderNo>887140</ns0:OrderNo>
<ns0:CPROD>BD</ns0:CPROD>
<ns0:CURR>USD</ns0:CURR>
I'm able to parse If I remove the namespace ns0 from the file as following:
<OrderNo>887140</OrderNo>
<CPROD>BD</CPROD>
<CURR>USD</CURR>
The thing is the XML file will always come with the namespace ns0.
I'm using IF_IXML, IF_IXML_STREAM_FACTORY, IF_IXML_ISTREAM, IF_IXML_PARSER, IF_IXML_DOCUMENT to parse the XML.
Any idea on how to overcome this?
Thanks,
Victor.

Hello Victor,
fine. I am glad, I could help you.
Just one note to XSLT Transformations: When using them, you got even the ability to map directly to internal abap tables:
CALL TRANSFORMATION ZXSLT_YOUR_TRANSFORMATION
SOURCE XML l_xmlstring
RESULT DATA = lt_data.
You just need to transform you xml to the asx:abap name space and that's it
Look at Re: Help needed XML to Internal table and vice versa, where I show a simple example, how this works.
Kind regards,
Hendrik

XML parsing with DocumentBuilder

Hi,
I use to parse an XML document using DocumentBuilder and Document objects.
When i have within my XML document the following line :
<value>MY_VALUE</toto>
How can i get the value "MY_VALUE" using Node objects without searching elements by tag name or criteria ???
Chris

Parse document with dom4j parser and get the tag value with xpath.
http://www.dom4j.org/guide.html

Java XML parsing with Xerces in Eclipse using Oxygen problem

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