Help appending dtd's to XML programmatically(SAX parser)

Hi
If i want to validate an xml by writing a dtd and if i want to append that dtd to my xml programattically then how will i do it
i am using java's sax parser currently .
can any one help me out.
Reply will b appritiated
Regards
Geetanjali P.

Parsers are for inputting XML data. Your question is about outputting XML data, so your choice of parser is irrelevant. What is relevant is how you are outputting your XML, and you didn't say anything about that. So please do.

Similar Messages

Problem in parsing an XML using SAX parser

Hai All,
I have got a problem in parsing an XML using SAX parser.
I have an XML (sample below) which need to be parsed
<line-items>
<item num="1">
     <part-number>PN1234</part-number>
     <quantity uom="ea">10</quantity>
     <lpn>LPN1060</lpn>
     <reference num="1">Line ref 1</reference>
     <reference num="2">Line ref 2</reference>
     <reference num="3">Line ref 3</reference>
</item>
<item num="2">
     <part-number>PN1527</part-number>
     <quantity uom="lbs">5</quantity>
     <lpn>LPN2152</lpn>
     <reference num="1">Line ref 1</reference>
     <reference num="2">Line ref 2</reference>
     <reference num="3">Line ref 3</reference>
</item>
<item num="n">
</item>
</line-items>
There can be any number of items( 1 to n). I need to parse these
item values using SAX parser and invoke a stored procedure for
each item with its
values(partnumber,qty,lpn,refnum1,refnum2,refnum3).
Suppose if there are 100 items, i need to invoke the stored
procedure sp1() 100 times for each item.
I need to invoke the stored procedure in endDocument() method of
SAX event handler and not in endelement() method.
What is the best way to store those values and invoke the stored
procedure in enddocument() method.
Any help would br greatly appreciated.
Thanks in advance
Pooja.

VO or ValueObject is a trendy new name for Beans.
So just create an item class with variables for each of the sub elements.
<item>
<part-number>PN1234</part-number>
<quantity uom="ea">10</quantity>
<lpn>LPN1060</lpn>
<reference num="1">Line ref 1</reference>
<reference num="2">Line ref 2</reference>
<reference num="3">Line ref 3</reference>
</item>
public class ItemVO
String partNumber;
int quantity;
String quantityType;
String lpn;
List references = new ArrayList();
* @return Returns the lpn.
public String getLpn()
return this.lpn;
* @param lpn The lpn to set.
public void setLpn(String lpn)
this.lpn = lpn;
* @return Returns the partNumber.
public String getPartNumber()
return this.partNumber;
* @param partNumber The partNumber to set.
public void setPartNumber(String partNumber)
this.partNumber = partNumber;
* @return Returns the quantity.
public int getQuantity()
return this.quantity;
* @param quantity The quantity to set.
public void setQuantity(int quantity)
this.quantity = quantity;
* @return Returns the quantityType.
public String getQuantityType()
return this.quantityType;
* @param quantityType The quantityType to set.
public void setQuantityType(String quantityType)
this.quantityType = quantityType;
* @return Returns the references.
public List getReferences()
return this.references;
* @param references The references to set.
public void setReferences(List references)
this.references = references;

How to parse XML using SAX Parser sequencially

I have a requirement to parse XML file sequencially. But I need to stop the parsing in-between for doing some processing.
Let me explain with example
I have a file with following structure.
<InputFile>
<Invoice>
     <InvoiceNo = "Inv1"/>
<InvoiceDt = "12012002"/>
</Invoice>
<Invoice>
     <InvoiceNo = "Inv2"/>
<InvoiceDt = "12012002"/>
</Invoice>
<Invoice>
     <InvoiceNo = "Inv3"/>
<InvoiceDt = "12012002"/>
</Invoice>
For each Invoice node I need to process some activites. So I need to write a method which will open the XML file and parse and returns me a complete element from <invoice> to </Invoice> sequencially.
Please let me know whther some body has solution for this.
Manoj.

If you're using a SAX parser then you can implement your code in the startElement(), endElement(), and characters() methods... have a look at the tutorial here:
http://java.sun.com/xml/jaxp/dist/1.1/docs/tutorial/index.html

Illegal XML character SAX Parser exception

The element type "body" must be terminated by the matching end-tag "". i get this exception, its thrown from the SAXParser. if you look at the end tag it shows you an empty string end-tag "". . This should get displayed as end-tag "</body>". instead.
What can i do to make it displayed as end-tag "</body" . There are loads of similar issues on-line, but non of them had a satisfactory answer.
help !

and thanks for the replies :)Most of the replies you thank pointed you at searching how to escape HTML markup when copying the plain text to an HTML document. DId you consider doing this search?
For example, Jakarta's Commons-Lang library has a [StringEscapeUtils class|http://commons.apache.org/lang/api-release/org/apache/commons/lang/StringEscapeUtils.html] with methods that seem to provide just this capability.
now what i think i should do is, to append the auto generated error message with some special characters so it could display in html.No. The "special characters", or merely, special markup, are what makes the browser not render the string correctly (it probably thinks +</body>+ is the closing tag of the similarly-named HTML element. You need to escape this markup, or a at least the lower/greater signs that make it look like markup.
but how can i chnage the auto generated message ?You shouldn't strive to change the message itself, but to convert it to something that renders correctly when embedded into an HTML document.
Edited by: jduprez on Mar 17, 2010 12:35 PM

Problem reading ' from XML uisng SAX Parser

Hi All,
I have a XML which contains the following element
<DataText>This is simple ' Text</DataText>I have included & apos ; in the element called DataText.
When parsing the element, am getting only the text that appears before & apos ;
When Not including & apos ; am able to get the full text from this element.
I observed that in the method characters(char buf[], int offset, int len)
Thelen attribute shows the total length from start position to the position where & apos ; starts...
How can i get the whole text which includes even " & apos ; "
Thanks
Note : while posting this request, & apos; is being formatted to ' . thats the reason included space between them

HI,
Was not doing much in the characters method, anyway here is the code
public void characters(char buf[], int offset, int len) throws SAXException{
elementText = new String(buf, offset, len).trim();
}The value for len is from the start position of the element value and the start position of the ' & apos; ' in the XML File...
If i remove the ' & apos; ' in the element value , then the len is the full character length in between the element.
Very confused why this is happening !!
Did anyone face this problem ever before ?

XML - SAX Parsing Question

Hi,
I am parsing XML using SAX parser and fill the values into the HashTable ( like Key value pair ).. so i can get the vaues for a particular key using hash get function.
For the following XML. There are 2 "subscriberNumber" attribute, one is under "sn:Subscriber" and the another is under "sn:SubscriberChange".
I can able to put this values in hash table and when i print the Hash table it is printing as sn:subscriberNumber=[1234567890, 1234567890] .. But how will i know which one is from "sn:Subscriber" and which is from "sn:SubscriberChange"
This is the XML :
<sn:SubscriberNotification>
<sn:notificationSubType>1120</sn:notificationSubType>
<sn:Subscriber>
     <cng:PaymentType>PostPaid</cng:PaymentType>
     <sn:subscriberNumber>1234567890</sn:subscriberNumber>
</sn:Subscriber>
<sn:SubscriberChange>
     <sn:subscriberNumber>1234567890</sn:subscriberNumber>
</sn:SubscriberChange>
</sn:SubscriberNotification>
Any suggestion and pointers are really helpful
Thanks,
-Raj..

Try something like this:
import java.util.Stack;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
class MyHandler extends DefaultHandler {
    Stack openTags = new Stack();
    public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
        if (qName.equals("sn:subscriberNumber")) {
            String parentTag = (String)openTags.peek();
            System.out.println("Parent tag of this <sn:subscriberNumber> is : <" + parentTag + ">");
        openTags.push(qName);
    public void endElement(String uri, String localName, String qName) throws SAXException {
        openTags.pop();
}Regards

Parsing the large XML ( 1GB) using SAX PARSER

We have very large XMLs being generated by processes. These XMLs should be validated first and then parsed next. We have implementation that works for small files. My question is
how can we validate and parse large XMLs with SAX parser?

The same way as parsing a small XML file, no? Why don't you try it? Then if you have problems that you can't solve, ask about them here.

Why are all the events in the XML SAX parser not activated?

Hi everyone,
I have written a mini server that parses XML files into SQL queries.
Below is a segment of my code;
          try          {
               Class.forName( JDBC_DRIVER );
               myConnection = DriverManager.getConnection( DATABASE_URL, "username", "password");
               EventXMLParser myEXP = new EventXMLParser(directory, myConnection);
               File[] xmlFiles = directory.listFiles();
               for (File xmlFile : xmlFiles)               {
                    myEXP.XMLtoDB(xmlFile);
                    outWriter.println("File:" + xmlFile.getName() + " DONE");
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               System.err.println("SQLException for establishing connection");
               e.printStackTrace();
          } catch (ClassNotFoundException e)     {
               System.err.println("CLASS NOT FOUND EXCEPTION HERE");
               e.printStackTrace();
          } catch (Exception e)     {
               System.err.println(e);
               e.printStackTrace();
          finally {
               outWriter.println("PARSING COMPLETED");
               outWriter.close();
     }Where the constructor EventXMLParser constructs the following:
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          super();
          try     {
               this.XMLpath = path;
               this.db_connection = connection;
               this.xr = XMLReaderFactory.createXMLReader();
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               this.xr.setContentHandler(XMLSAXhandler);
               this.xr.setErrorHandler(XMLSAXhandler);
               //System.out.println("DEBUG: db_connection is " + db_connection.toString());
          catch (Exception e)     {
               System.out.println("Constructor Error!");
               e.printStackTrace();
     }Below are all my helper methods within EventXMLParser.java
     public void XMLtoDB(String XMLpath) throws Exception {
          try     {
               //Input
               System.out.println("XMLpath is : " + XMLpath);
               /*FileReader r = new FileReader(XMLpath); debug
               InputSource in = new InputSource(r);
               xr.parse(in);
               xr.parse(XMLpath);
               /* Note that while parsing, the end of each event, </event>
                * will trigger sendSQL to execute the query on the database
          catch (Exception e)     {
               throw new Exception("Error with XMLtoDB!! Exception: " + e);
     public void sendSQL(Event event, Connection sql_connection) throws SQLException     {
               //JDBC part
               try     {
                    System.err.println("DEBUG sendSQL");
                    Statement sql_statement = sql_connection.createStatement();
                    ResultSet resultSet = sql_statement.executeQuery( event.toSQL() );
               catch (SQLException e)     {
                    e.printStackTrace();
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      * From here onwards it's all designed for the SAX Parsing with different event calling methods
     public void startDocument()     {
          System.err.println("Start Document");
     public void endDocument()     {
          System.err.println("End Document");
     public void startElement(String uri, String name, String qName, Attributes atts)     {
          CurrentElement= name;
          System.out.println("This is parsing");
     public void characters(char ch[], int start, int length)     {
          SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
          StringBuffer sb = new StringBuffer();
          for (int i = start; i < start + length; i++)
               sb.append(ch);
          String content = sb.toString();
          if (CurrentElement.equals("eid"))
               temp.setEventID( (Integer.valueOf(content)).intValue() ) ;
          else if (CurrentElement.equals("sd"))
               temp.setShort_description(content);
          else if (CurrentElement.equals("ld"))
               temp.setLong_description(content);
          else if ( (CurrentElement.equals("dt")))
               temp.setDate_Time( formatter.parse(content, new ParsePosition(0)) );
          else if (CurrentElement.equals("repeat"))
               temp.setRepeat_pattern( (Integer.valueOf(content)).intValue() );
          else if (CurrentElement.equals("valid"))
               temp.setValid_period(content);
          else if (CurrentElement.equals("status"))     {
               temp.setStatus( (Integer.valueOf(content)).intValue() );
          else {}
     public void endElement(String uri, String name, String qName)     {
          System.err.println("DEBUG" + temp.toString()); /*debug*/
          if (name.equals("event"))     {
               try     {
                    /*debug*/ temp.setUserID(1);
                    /*debug*/ System.err.println("DEBUG: " + temp.toString());
                    sendSQL(temp, db_connection);
                    //temp = new Event();
               catch (SQLException e)     {
                    System.err.println(e);
               }//end catch
          }//end try
Where event is a public class Event     {
     //fields
     private int userID = 1; // = 1 only applies for testing
     private int eventID;
     private String short_description;
     private String long_description;
     private Date date_time = null;
     private int repeat_pattern;
     private String valid_period;
     private int status;     //1 for new, 0 for modification and -1 for delete
     SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
     //Constructors
     //every event requires the following: userID eventID and short_Description
     public Event(int uID, int eID, String shortDescrp)     {
          setUserID(uID);
          setEventID(eID);
          setShort_description(shortDescrp);
     public Event(int uid, int eid, String sd,
                              String ld, Date d_t, int r_p, String v_p, int s)     {
          setUserID(uid);
          setEventID(eid);
          setShort_description(sd);
          setLong_description(ld);
          setDate_Time(d_t);
          setRepeat_pattern(r_p);
          setValid_period(v_p);
          setStatus(s);
     //set
     public void setUserID (int x)                         { this.userID = x ;}
     public void setEventID (int x)                         { this.eventID = x ;}
     public void setShort_description (String x)          { this.short_description = x ;}
     public void setLong_description (String x)          { this.long_description = x ;}
     public void setDate_Time(Date x)                    { this.date_time = x ;}
     public void setRepeat_pattern (int x)               { this.repeat_pattern = x ;}
     public void setValid_period (String x)               { this.valid_period = x ;}
     public void setStatus (int x)                         { this.status = x; }
     //get
     public int           getUserID()                              { return this.userID;}
     public int           getEventID()                         { return this.eventID;}
     public String      getShort_description()               { return this.short_description;}
     public String      getLong_description()               { return this.long_description;}
     public Date        getDate_Time()                         { return this.date_time;}
     public int         getRepeat_pattern()                    { return this.repeat_pattern;}
     public String      getValid_period()                    { return this.valid_period;}
     public int           getStatus()                              { return this.status; }
     //Event to SQL statements;
     public String toSQL()     {
          StringBuffer sb = new StringBuffer();
          ///if ( status == 1)     {
               sb.append( "INSERT INTO events SET" );
               sb.append( " userID = " + userID + ", ");
               sb.append( "eventID = " + eventID + ", " );
               sb.append( "short_description = " + "\'" + short_description + "\'" + ", "); //String
               sb.append( "long_description = " + "\'" + long_description + "\'" + ", "); //String
               sb.append( "date_time = " + "\'" + formatter.format(date_time) + "\'" + ", ");
               sb.append( "repeat_pattern = " + repeat_pattern + ", " );
               sb.append( "valid_period = " + "\'" + valid_period + "\'" ); //String
               sb.append( ";");
          //} else if ( status == 2)      {
          System.err.println(sb.toString());
          return sb.toString();
}     My question is: I have taken my SQL query generated by toSQL() method in events and it worked.
Here is the funny thing:
Everything is correct syntax wise: No complaints what soever
The mysql part works: Tested separately.
So I tend to think that the problem lies within the SAX parser. I have written SAX2 parsers on this machine before and they have worked too. I tried inserting println statements all over startElement endElement etc etc only to find out that the SAX parser did not call any of the methods that I overided!! Why is that so?
Can you guys spot where my SAX parser fails?

I see.
I try to correct this problem by removing super();
so right now my code looks like this:
     static Event temp = new Event(0, 0, "null", "null", new Date(), 0, "null", 0);
     static String CurrentElement = null;
     static File XMLpath;
     static Connection db_connection;
     static XMLReader xr;
     static DefaultHandler XMLSAXhandler;
     //Constructor,      Build the SAX Parser
     public EventXMLParser(File path, Connection connection)     {
          try     {
               this.XMLpath = path;
               this.db_connection = connection;
               this.xr = XMLReaderFactory.createXMLReader();
               this.XMLSAXhandler = new DefaultHandler(); //create a new own handler
               this.xr.setContentHandler(XMLSAXhandler);
               this.xr.setErrorHandler(XMLSAXhandler);
               //System.out.println("DEBUG: db_connection is " + db_connection.toString());
          catch (Exception e)     {
               System.out.println("Constructor Error!");
               e.printStackTrace();
     }This time, I created a new instance of default handler() which can be referenced by as the objects's XMLSAXhandler. However, that did not solve the problem, why does the problem still persist?
Right now, there is only one instance of a default handler created. So why does all my parsing event functions still get ignored?

How to Create XML file with SAX parser instead of DOM parser

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Hi,
You must write a XMLWriter class yourself, and that Class extends DefaultHandle ....., the overwrite the startElement(url, localName, qName, attributeList), startDocument(), endElement().....and so on.
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By using:
XMLWriter out = new XMLWriter()
out.startDocument();
Attribute attr1 = new Atribute();
attr1.add("name", "value");
out.startElement("","","Element1", attr1);
Attribute attr2 = new Atribute();
attr2.add("name", "value");
out.startElement("","","Element2", attr2);
out.endElement("","","Element2");
out.endElement("","","Element1");
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How to ignore the DTD in an XML file

I am using XMLReader as
XMLReader parser = XMLReaderFactory.createXMLReader("org.apache.xerces.parsers.SAXParser");
to parse an xml document. The XML has a <!DOCTYPE ....> in it which specifies a dtd file. If I do not have the dtd file on my local machine, the parser will fail. How can I tell the parser to ignore the <!DOCTYPE..> line, since I do not want it to validate against the dtd anyway?
Thanks.

just comment out the <!DOCTYPE> element and you will not have any problem and moreover the default behaviour of xerces is not to validate but see the well formedness .If you want to validate the xml document then do this
parser.setFeature("http://xml.org/sax/features/validation" ,true);
this will validate.
hope this will help you

Configure mapViewerConfig.xml Programmatically

Is it possible to add a datasource entry to mapViewerConfig.xml programmatically so that we can avoid using the GUI?
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I presume your servlet is in a package called CheckServlets?
ie it starts something like
package CheckServlets
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<servlet>
<servlet-name>test</servlet-name>
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evnafets

Xml sax parser

Hi all,
I am newbie to xml. I am using SAX parser for parsing xml documents. I have to write a code which parses all types of xsd files(including which can contain inline , referenced or both). Can anyone help / guide me how to code a generic xsd parser??
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An XSD file is an XML file, so you can parse it using sax.
See :
http://java.sun.com/webservices/jaxp/dist/1.1/docs/tutorial/sax/2a_echo.html
http://java.sun.com/webservices/jaxp/dist/1.1/docs/tutorial/sax/work/Echo02.java
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http://www.oracle.com/technology/tech/xml/xdk/doc/production/java/doc/java/javadoc/oracle/xml/parser/schema/XMLSchema.html#getXMLSchemaNodeTable

XML SAX parser that support LexicalHandler

Hello,
I'm looking for an XML SAX parser that support a LexicalHandler.
I have xml files that are not well formed, ie: (&, <, >, etc...) characters within tags and I need to ignore them.
Anyone have a link to some opensource library ??
Thanks,
Samir

Don't waste your time. Using a LexicalHandler isn't going to help with parsing malformed XML. You should get the person who produced those files to replace them with correct XML.
PC²

XSL problem with javax.xml.transform.sax.SAXTransformerFactory

Dear sirs,
I use SAXTransformerFactory in order to transform a Hashtable to SAX Event and apply a XSL.
I try this code with the lastest version of apache parser.
It run well.
But, I put this software to WEBLOGIC 6.2 server and no run.
this check is true:
          if (transFact.getFeature(javax.xml.transform.sax.SAXTransformerFactory.FEATURE)&&transFact.getFeature(javax.xml.transform.sax.SAXSource.FEATURE))
Some one can help me.
Thank in avance
The code:
java.io.ByteArrayOutputStream bout = new java.io.ByteArrayOutputStream();
          com.cajarural.xml.HashtableParser parser = new com.cajarural.xml.HashtableParser(hashtable);
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               if (transFact.getFeature(javax.xml.transform.sax.SAXTransformerFactory.FEATURE)&&transFact.getFeature(javax.xml.transform.sax.SAXSource.FEATURE))
javax.xml.transform.sax.SAXTransformerFactory saxTransFact = (javax.xml.transform.sax.SAXTransformerFactory) transFact;
javax.xml.transform.sax.TransformerHandler transHand = saxTransFact.newTransformerHandler(templates);
transHand.setResult(new javax.xml.transform.stream.StreamResult(bout));
parser.setContentHandler(transHand);
// attach the XSLT processor to the           parser.parse();
          return new String(bout.toByteArray());

put Xalan in your war file then try using this kind of commands:     System.setProperty("org.xml.sax.parser", "org.apache.xerces.parsers.SAXParser");
System.setProperty("javax.xml.parsers.SAXParserFactory", "org.apache.xerces.jaxp.SAXParserFactoryImpl");
System.setProperty("javax.xml.parsers.DocumentBuilderFactory", "org.apache.xerces.jaxp.DocumentBuilderFactoryImpl");
System.setProperty("javax.xml.transform.TransformerFactory", "org.apache.xalan.processor.TransformerFactoryImpl");This tells JAXP what implementations it should use without even asking your administrator to modify the WebLogic setup...
It's what I've done with the WLS7.0 server I am using ;-)

Need to add DTD to my XML file

Hi,
i have created my XML file and now i have to add DTD to this file. Is there a method to do this?
     DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();          try {
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I'm Having the same problem.
I generate a XML document using DOM. And the content of this document varies a lot. It is built based on the resultset of a database query. If the query results 3 columns: name, address and fone. The document will have 3 a structure like this:
<root>
<row number=1>
<name>John</name>
<address>J Street</address>
<fone>12345678</fone>
</row>
<row number=2>
<name>Peter</name>
<address>K Street</address>
<fone>87654321</fone>
</row>
</root>
What i mean is. The tags inside the row tag will allways be different. Depending on the columns from the query.
This document will be parsed by a SAX Parser (impossible to use DOM becouse the machine where it will be parsed has very few resources). And then I'll need the DTD for parsing it better.
The problem is. How to create Dynamicaly the DTD for a DOM Document? How to put it in the resulting XML File?
Thanks!

Help appending dtd's to XML programmatically(SAX parser)

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