Problem on sax parser

why this does not work
import java.io.*;
import org.xml.sax.*;
import org.xml.sax.helpers.DefaultHandler;
import javax.xml.parsers.SAXParserFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
public class XMLParser extends DefaultHandler
SAXParserFactory factory = SAXParserFactory.newInstance();
SAXParser myparser = factory.newSAXParser();
myparser.parse(new File("c:/first.xml"), handler);

Put your code inside a method!

Similar Messages

Problem with sax parser

Hello..
I have the following problem. When I parse an xml document with blank spaces and numbers with decimals, its sometimes comes out as one string and sometimes as two, for example "First A" sometimes comes out as "First" and "A" and sometimes as "First A", which is how its stored in the xml file. Same with numbers like 19.20. Im enclosing a little of my code..
public void characters(char buf[], int offset, int len)
throws SAXException
if (textBuffer != null) {
SaveString = ""+textBuffer;
if(i>-1)
numbers = SaveString;
Whats wrong and how do I fix it.
Best Regards Dan
PS I have more code, in data and out data if needed.Ds

Hello,
I do not know if this is your problem, yet please find hereafter an excerpt of the SAX API:
public void characters(char[] ch,
                       int start,
                       int length)
                throws SAXException
... SAX parsers may return all contiguous character data in a single chunk, or they may split it into several chunks;...
... Note that some parsers will report whitespace in element content using the ignorableWhitespace method rather than this one (validating parsers must do so)...
In other words, I am afraid that your issue is the "standard behaviour" of a SAX parser.
I hope it helps.

Problem with SAX parser - entity must finish with a semi-colon

Hi,
I'm pretty new to the complexities of using SAXParserFactory and its cousins of XMLReaderAdapter, HTMLBuilder, HTMLDocument, entity resolvers and the like, so wondered if perhaps someone could give me a hand with this problem.
In a nutshell, my code is really nothing more than a glorified HTML parser - a web page editor, if you like. I read in an HTML file (only one that my software has created in the first place), parse it, then produce a Swing representation of the various tags I've parsed from the page and display this on a canvas. So, for instance, I would convert a simple <TABLE> of three rows and one column, via an HTMLTableElement, into a Swing JPanel containing three JLabels, suitably laid out.
I then allow the user to amend the values of the various HTML attributes, and I then write the HTML representation back to the web page.
It works reasonably well, albeit a bit heavy on resources. Here's a summary of the code for parsing an HTML file:
      htmlBuilder = new HTMLBuilder();
parserFactory = SAXParserFactory.newInstance();
parserFactory.setValidating(false);
parserFactory.setNamespaceAware(true);
FileInputStream fileInputStream = new FileInputStream(htmlFile);
InputSource inputSource = new InputSource(fileInputStream);
DoctypeChangerStream changer = new DoctypeChangerStream(inputSource.getByteStream());
changer.setGenerator(
   new DoctypeGenerator()
      public Doctype generate(Doctype old)
         return new DoctypeImpl
         old.getRootElement(),
                          old.getPublicId(),
                          old.getSystemId(),
         old.getInternalSubset()
      resolver = new TSLLocalEntityResolver("-//W3C//DTD XHTML 1.0 Transitional//EN", "xhtml1-transitional.dtd");
      readerAdapter = new XMLReaderAdapter(parserFactory.newSAXParser().getXMLReader());
      readerAdapter.setDocumentHandler(htmlBuilder);
      readerAdapter.setEntityResolver(resolver);
      readerAdapter.parse(inputSource);
      htmlDocument = htmlBuilder.getHTMLDocument();
      htmlBody = (HTMLBodyElement)htmlDocument.getBody();
      traversal = (DocumentTraversal)htmlDocument;
      walker = traversal.createTreeWalker(htmlBody,NodeFilter.SHOW_ELEMENT, null, true);
      rootNode = new DefaultMutableTreeNode(new WidgetTreeRootNode(htmlFile));
      createNodes(walker); However, I'm having a problem parsing a piece of HTML for a streaming video widget. The key part of this HTML is as follows:
            <object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"
              id="client"
        width="100%"
        height="100%"
              codebase="http://fpdownload.macromedia.com/get/flashplayer/current/swflash.cab">
              <param name="movie" value="client.swf?user=lkcl&stream=stream2&streamtype=live&server=rtmp://192.168.250.206/oflaDemo" />
         etc....You will see that the <param> tag in the HTML has a value attribute which is a URL plus three URL parameters - looks absolutely standard, and in fact works absolutely correctly in a browser. However, when my readerAdapter.parse() method gets to this point, it throws an exception saying that there should be a semi-colon after the entity 'stream'. I can see whats happening - basically the SAXParser thinks that the ampersand marks the start of a new entity. When it finds '&stream' it expects it to finish with a semi-colon (e.g. much like and other such HTML characters). The only way I can get the parser past this point is to encode all the relevant ampersands to %26 -- but then the web page stops working ! Aaargh....
Can someone explain what my options are for getting around this problem ? Some property I can set on the parser ? A different DTD ? Not to use SAX at all ? Override the parser's exception handler ? A completely different approach ?!
Could you provide a simple example to explain what you mean ?
Thanks in anticipation !

You probably don't have the ampersands in your "value" attribute escaped properly. It should look like this:
value="client.swf?user=lkcl&stream=...{code}
Most HTML processors (i.e. browsers) will overlook that omission, because almost nobody does it right when they are generating HTML by hand, but XML processors won't.

Problem Using Sax parser with Eclipse 3.0 and command line

Hi,
I am parsing a xml file with sax. When I am running my programm in the command line everthing is ok and I get the right results from parsing.
But if I am running the programm in Eclipse 3.0 (the same java code) I get an other result (the wrong results).
Does anybody know what this can be the reason for. Is Eclipse using an other xml parser and if where I can change the parser?
It would be very kind if somebody can give me a reason for this strange behaviour.
Thanks in advance

I have solved my problem.
In the command line I used jre 1.4 and in Eclipse I used jre 1.5.
I think jre 1.5 uses an other xml parser so I got an other result.
If i use in Eclipse jre1.4 I get the same result as in the command line.

Problem with SAX parser with String format

hi, all I have the next problem:
I try to parse xml file with success, I write next code:
====================
my_class saxUms = new my_class();
File file = new File( "c:\\my_try_Response.xml" );
InputSource src1 = new InputSource( new FileInputStream( file ) );
XMLReader rdr = XMLReaderFactory.createXMLReader( "org.apache.xerces.parsers.SAXParser" ); rdr.setContentHandler( saxUms );
rdr.parse(src1);
===================
but when I try to parse the same in string variable, I write:
===================
my_class saxUms = new my_class();
StringReader strr = new StringReader(my_str);
InputSource intt = new InputSource(strr);
XMLReader prs= XMLReaderFactory.createXMLReader( "org.apache.xerces.parsers.SAXParser" );
prs.setContentHandler(saxUms);
prs.parse(intt);
===================
and error occurs:
"Exception: java.lang.ClassCastException: java.lang.StringBuffer"
how to fix the problem?
Thank you for collaboration!

where does the exception stack trace say the error is occurring?

Sax parser problem

hi,
i am assuming the problem is with sax parser but i cant be sure. I am parsing a xml file (about 1.4MB) with some data in it. the parser i have created reads the xml file correctly for the most part but when at some point the
"public void characters(char buf[], int offset, int len) throws SAXException"
function stops working correctly....i.e it doesnt fully read read the data between the "<start>" and "</start>" element. say it reads about 100 id's correctly---for 101 ID it does this. This is just an example. Since, the problem might be with how :
"public void characters(char buf[], int offset, int len) throws SAXException"
function is reading the data i was wondering if anybody else had encountered this problem or please let me know if i need to change something in the code: here's a part of the code :
Bascially i have created three classes to enter data into three mysql tables and as i parse the data i fill up the columns by matching the column header with the tagName.
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.*;
import java.io.*;
import java.util.ArrayList;
import java.lang.Object;
import org.xml.sax.*;
import org.xml.sax.helpers.DefaultHandler;
import java.util.*;
import javax.xml.parsers.SAXParserFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
public class Echo03 extends DefaultHandler
StringBuffer textBuffer;
int issuedValue, prodValue;
OrdHeader header = new OrdHeader();
OrdDetail detail = new OrdDetail();
Member memInfo = new Member();
//new addition to store the dynamic value of the products
TestOrdheader prod = new TestOrdheader();
int counter;
String tag, newTag;
SetValue setVal = new SetValue();
String test;
public static void main(String argv[])
if (argv.length != 1) {
System.err.println("Usage: cmd filename");
System.exit(1);
// Use an instance of ourselves as the SAX event handler
DefaultHandler handler = new Echo03();
// Use the default (non-validating) parser
SAXParserFactory factory = SAXParserFactory.newInstance();
try {
// Set up output stream
out = new OutputStreamWriter(System.out, "UTF8");
// Parse the input
SAXParser saxParser = factory.newSAXParser();
saxParser.parse( new File(argv[0]), handler);
} catch (Throwable t) {
t.printStackTrace();
System.exit(0);
static private Writer out;
private String indentString = " "; // Amount to indent
private int indentLevel = 0;
//===========================================================
// SAX DocumentHandler methods
//===========================================================
public void startDocument()
throws SAXException
nl();
nl();
emit("START DOCUMENT");
nl();
emit("<?xml version='1.0' encoding='UTF-8'?>");
header.assign();
public void endDocument()
throws SAXException
nl(); emit("END DOCUMENT");
try {
nl();
out.flush();
} catch (IOException e) {
throw new SAXException("I/O error", e);
public void startElement(String namespaceURI,
String lName, // local name
String qName, // qualified name
Attributes attrs)
throws SAXException
indentLevel++;
nl(); //emit("ELEMENT: ");
String eName = lName; // element name
if ("".equals(eName)) eName = qName; // namespaceAware = false
if (qName.equals("Billing")){
issuedValue = 1;
}else if (qName.equals("Shipping")){
issuedValue = 2;
}else if (qName.equals("ShippingTotal")){
issuedValue = 3;
//check to see if "Product" is the name of the element thats coming next
if (qName.equals("Product")){
if (issuedValue != 3){
prodValue = 1;
prod.addCounter();
}else{
prodValue = 0;
tag = eName;
if (attrs != null) {
for (int i = 0; i < attrs.getLength(); i++) {
String aName = attrs.getLocalName(i); // Attr name
if ("".equals(aName)) aName = attrs.getQName(i);
nl();
emit(" ATTR: ");
emit(aName);
emit("\t\"");
emit(attrs.getValue(i));
emit("\"");
if (attrs.getLength() > 0) nl();
public void endElement(String namespaceURI,
String sName, // simple name
String qName // qualified name
throws SAXException
nl();
String eName = sName; // element name
if ("".equals(eName)){
eName = qName; // not namespaceAware
if ("Order".equals(eName)){
//enter into database
     databaseEnter();
textBuffer = null;
indentLevel--;
public void characters(char buf[], int offset, int len)
throws SAXException
nl();
try {
String s = new String(buf, offset, len);
if (!s.trim().equals("")){
settag(tag, s);
s = null;
}catch (NullPointerException E){
System.out.println("Null pointer Exception:"+E);
//===========================================================
// Utility Methods ...
//===========================================================
// Wrap I/O exceptions in SAX exceptions, to
// suit handler signature requirements
private void emit(String s)
throws SAXException
try {
out.write(s);
out.flush();
} catch (IOException e) {
throw new SAXException("I/O error", e);
// Start a new line
// and indent the next line appropriately
private void nl()
throws SAXException
String lineEnd = System.getProperty("line.separator");
try {
out.write(lineEnd);
for (int i=0; i < indentLevel; i++) out.write(indentString);
} catch (IOException e) {
throw new SAXException("I/O error", e);
===================================================================
///User defined methods
===================================================================
private String strsplit(String splitstr){
String delimiter = new String("=");
String[] value = splitstr.split(delimiter);
value[1] = value[1].replace(':', ' ');
return value[1];
public void settag(String tag, String s){
String pp_transid = null, pp_respmsg = null,pp_authid = null, pp_avs = null, pp_avszip = null;
if ((tag.equals("OrderDate")) || (tag.equals("OrderProcessingInfo"))){
if (tag.equals("OrderDate")){
StringTokenizer st = new StringTokenizer(s);
String orddate = st.nextToken();
String ordtime = st.nextToken();
header.put("ordDate", orddate);
header.put("ordTime", ordtime);
}else if (tag.equals("OrderProcessingInfo")){
StringTokenizer st1 = new StringTokenizer(s);
int tokenCount = 1;
while (tokenCount <= st1.countTokens()){
switch(tokenCount){
case 1:
String extra = st1.nextToken();
break;
case 2:
String Opp_transid = st1.nextToken();
pp_transid = strsplit(Opp_transid);
break;
case 3:
String Opp_respmsg = st1.nextToken();
pp_respmsg = strsplit(Opp_respmsg);
break;
case 4:
String Opp_authid = st1.nextToken();
pp_authid = strsplit(Opp_authid);
break;
case 5:
String Opp_avs = st1.nextToken();
pp_avs = strsplit(Opp_avs);
break;
case 6:
String Opp_avszip = st1.nextToken();
pp_avszip = strsplit(Opp_avszip);
break;
tokenCount++;
header.put("pp_transid", pp_transid);
header.put("pp_respmsg", pp_respmsg);
header.put("pp_authid", pp_authid);
header.put("pp_avs", pp_avs);
header.put("pp_avszip", pp_avszip);
}else{
newTag = new String(setVal.set_name(tag, issuedValue));
header.put(newTag, s);
//detail.put(newTag, s);
prod.put(newTag, s);
memInfo.put(newTag,s);
//Check to see-- if we should add this product to the database or not
boolean check = prod.checkValid(newTag, prodValue);
if (check){
prod.addValues(s);
setVal.clearMod();
==================================================================
Here's the error that i get:
java.util.NoSuchElementException
at org.apache.crimson.parser.Parser2.parseInternal(Parser2.java:691)
at org.apache.crimson.parser.Parser2.parse(Parser2.java:337)
at org.apache.crimson.parser.XMLReaderImpl.parse(XMLReaderImpl.java:448)
at javax.xml.parsers.SAXParser.parse(SAXParser.java:345)
at javax.xml.parsers.SAXParser.parse(SAXParser.java:281)
at Echo03.main(Echo03.java:47)

I haven't gone through your code but I also had a similar error....and the exception in my was because of an "&" instead of the entity reference & in one of the element values. I use a non-validating parser but if you use a validating one then this might not be the reason for your exception.

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;

Problem in using SAX parser.

Hai All,
I have got a problem in using SAX parser.
My XML looks like this:
<authorizer>
<first-name>HP</first-name>
<last-name>Services</last-name>
<phone>800-22-1984</phone>
</authorizer>
<destination>
<first-name>John</first-name>
<last-name>Doe</last-name>
<company>John Doe Enterprises, Inc.</company>
<department>Manufacturing</department>
<phone>800-555-1234</phone>
<address>
<street-one>1654 Peachtree Str</street-one>
<street-two>Suite Y</street-two>
<city>Atlanta</city>
<province>GA</province>
<country>US</country>
<postal-code>30326</postal-code>
</address>
</destination>
my part of SAX parser code is:
public void startElement (String name, AttributeList attrs)
throws SAXException
accumulator.setLength(0);
public void characters (char buf [], int offset, int len)
throws SAXException
accumulator.append(buf, offset, len);
public void endElement (String name)
throws SAXException
if (name.equals("first-name") )
firstname=accumulator.toString().trim();
if (name.equals("last-name"))
lastname=accumulator.toString().trim();
My problem is that i have to store the values of first-name and last-name.
but i have that in both
<authorizer> </authorizer> Tag and
<destination> </destination>
I need to retrive authorizer's firstname,lastname and
destination's firstname and lastname.
what i mean is i need to store authorizerFirstName,authorizerLastName
destinationFirstname and destinationLastname.
Pls let me know how to do that.
Thanks in advance.
Pooja.

hi pooja,
I think you are using DataHandler for parsing. Its deprecated. try using contentHandler . You can get the value of the element at the beginning. say for example
<firstname>sdfs</firstname>
the startElement will be firstname
the next method that it invokes will be characters method which has the text associated with the element. I am sending a sample code for your problem. try using it .
boolean m_boolinAuth = false;
boolean m_boolinDest = false;
boolean m_bAuthFName = false;
boolean m_bAuthLName = false;
public void startElement(String namespaceURI, String elementName, String qName, Attributes atts)
//does the logic for startElement
if(qName.equals("Authorization"))
m_boolinAuth = true;
m_boolinDest = false;
else if(qName.equals("Destination"))
m_boolinDest = true;
m_boolinAuth = false;
if(qName.equals("firstname"))
m_bFirstName = true;
if(qName.equals("lastname"))
m_bLastName = true;
public void characters(char[] ch, int start, int length)
//does the logic for characters.
String str = new String(ch,start,length);
if(m_bFirstName)
if(m_boolinAuth)
m_strAuthFirstName =str;
else if(m_boolinDest)
m_strDestFirstName = str;
m_bFirstName = false;
if(m_bLastName)
//same as first name case;
}

SAX Parser and special character problem

Hi,
Could anyone help with the following problem?
Background:
1. Using a SAX Parser (Oracle Implementation) to read XML from a CLOB, convert this XML to another format to be inserted in the database.
2. Due to performance issues we parse the input stream from the CLOB.
3. For same reason, we are not using XSL.
This is the problem we face:
1. Values of some of the tags in the XML have special characters (Ex: &, <, >).
2. While using the SAX Parser, the element handler function for the SAX Parser is called by the frame work with the value of these tags broken up with each of these characters being treated as a tag delimiter.
Ex: <Description>SomeText_A & SomeText_B</Description>
is treated as SomeText_A in first call to the handler; SomeText_B in the second call.
The handler function does not get to see the "&" character.
Thus, the final conversion is
Say, <Description> is to be converted to <FreeText>
we, get <FreeText>SomeText_A</FreeText>
<FreeText>SomeText_B</FreeText>
We tried using &; but it then breaks it up into SomeText_A, & and SomeText_B.
How can we get the whole value for the <Description> tag in the characters() function in the SAXParser so that we can convert it to <FreeText>SomeText_A & SomeText_B</FreeText>.
Thanks in advance..
Chirdeep.

We already tried that..looks like the line where I mentioned that it converted the entity referece characters to an ampersand..
"We tried using <entity reference for &> but it then breaks it up into SomeText_A, & and SomeText_B."
null

SAX parser problem in JDK1.5

I have parse the xml file using SAX in jdk1.5 environment. During the parsing, it missed the some text content.
for example
<employeeid>
<empid>1001</empid>
<empid>1002</empid>
</employeeid>
If i have parse the above xml file using SAX in jdk1.5 environment. The output is
1001
100
during the parsing , SAX parser misses digit of 2.
if i have parse the above xml file using SAX in jdk1.4 environment , it is working fine.
what is the problem in jdk1.5
please help
bala

What I expect the problem to be was discussed recently in a topic titled "SAX Parser Problems" that was started on March 14 at 6:59 AM by JackoBS.
Read that and see if it fixes your problem. If so, it is not a JDK1.5 problem, but a user error.
Dave Patterson

SAX parsing problem

Thanks for reading this msg!
I am using SAX parsing XML , everthing is looks OK but only one I don't get it, one element out put is being splited but all other no problem even same data...
XML element :
<item> RO(contains 160 FT)</item>
after parsing the data is like this: 'RO(c', 'ontains 160 FT)'
Thanks for your help!

This is a FAQ, search the forums or look at the API documentation
http://java.sun.com/j2se/1.4.2/docs/api/org/xml/sax/ContentHandler.html#characters(char[],%20int,%20int)
Pete

I've a problem with errors message in the sax parser

Hello,
I'm quite new to Java.
I'm trying to create a SAX parser for my XML file, with a XML schema.
When my pars run a XML file, the following mistakes go out:
1)org.sax.SAXParseException:s4s-elt-must-match: the content of 'restriction' must match (annotation?,.....)
2)org.sax.SAXParseException: src-ct.0.1:Complex Type Definition Rappresentation Error for type..... Element 'sequence' is invalid,misplaced or occurs to often
but I don't understand where I must go in the schema to correct.
Many thanks!

Hi,
Perhaps it would help if you post your XML file.

XDK for C - SAX Parser Memory Problem

Hi,
I'm using the SAX Parser with custom Callbacks with XDK for C - version : Oracle XML Parser 9.2.0.6.0.
i'm parsing a single large XML file using the custom callbacks.
The issue i'm facing that the SAX Parser does not release any memory till complete parsing is over for the whole document(until xmlterm is called). This causes the parser to fail with LPX-00002 : OUT OF MEMORY error before the document parsing is complete.
I tried using custom memory callbacks but what i noticed is that the parser does not invoke the free Memory callback untill xmlterm is invoked.
If anybody has found an alternative to allow memory to be freed while SAX parsing is going on pls help me too.
Regards,
Vineet Mago

Can you send the test case?

Sax parser problem plz help

hi !!!!!!!!!!!!
Im using a SAX parser to parse an xml file im successful in doing it i got tit parse after parising i want the value of a particular tag for example i have a tag as
<filtername>datasource</filtername>
i want datasource after parsing the xml and without using DOM concept how do i do it please help

hi i have a parser for start parsing and for start element
when im doing this i get the complete xml parsed after the xml is parsed how do i get it i still could not get how to soak the characters .....
private void startParsing()
          try
               InputStream instream = getClass().getClassLoader().getResourceAsStream(contextFile);
               InputSource in = new InputSource(instream);
               SAXParser parser = SAXParserFactory.newInstance().newSAXParser();
               XMLReader reader = parser.getXMLReader();
               reader.setContentHandler(this);
               reader.parse(in);
          catch(ParserConfigurationException pce)
               System.out.println(pce);
          catch(SAXException se)
               System.out.println(se);
          catch(IOException ie)
               System.out.println(ie);
     public void startElement(String uri,String localName,String qName,Attributes attributes)
          System.out.format("uri : %s localName %s qName %s %n",uri,localName,qName);
so now i have an attribut but i need content of the opening and closingtag like
attribute is name
<name>jack</name>
im successfull in getting name but now i want jill ....

SAX parsing and loops problem

Hi!
I currently have an XML file which looks like this:
<jel>
<admin creation="Fri Nov 09 17:14:55 GMT 2007" xsdversion="1.0.0" version="1.0.0"/>
−
     <jelclass superclass="Object" visibility="public" package="" superclassfulltype="java.lang.Object" fulltype="Player" type="Player">
−
     <implements>
<interface fulltype="java.awt.event.ActionListener" type="ActionListener"/>
<interface fulltype="java.awt.event.KeyListener" type="KeyListener"/>
</implements>
−
     <methods>
−
     <constructor visibility="public" name="Player">
−
     <params>
<param name="newProtocol" fulltype="NewProtocol" type="NewProtocol"/>
<param name="x" fulltype="int" type="int"/>
<param name="y" fulltype="int" type="int"/>
</params>
</constructor>
−
     <method visibility="public" name="actionPerformed" fulltype="void" type="void">
−
     <params>
<param name="e" fulltype="java.awt.event.ActionEvent" type="ActionEvent"/>
</params>
</method>
−
     <method visibility="public" name="keyPressed" fulltype="void" type="void">
−
     <params>
<param name="e" fulltype="java.awt.event.KeyEvent" type="KeyEvent"/>
</params>
</method>
−
     <method visibility="public" name="keyReleased" fulltype="void" type="void">
−
     <params>
<param name="e" fulltype="java.awt.event.KeyEvent" type="KeyEvent"/>
</params>
</method>
−
     <method visibility="public" name="keyTyped" fulltype="void" type="void">
−
     <params>
<param name="e" fulltype="java.awt.event.KeyEvent" type="KeyEvent"/>
</params>
</method>
<method visibility="public" name="getX" fulltype="int" type="int"/>
−
     <method visibility="public" name="setX" fulltype="void" type="void">
−
     <params>
<param name="x" fulltype="int" type="int"/>
</params>
</method>
<method visibility="public" name="getY" fulltype="int" type="int"/>
−
     <method visibility="public" name="setY" fulltype="void" type="void">
−
     <params>
<param name="y" fulltype="int" type="int"/>
</params>
</method>
</methods>
</jelclass>And I have SAX parsing code that looks like this:
public class SaxParser{
      private HashSet <String>packageSet = new HashSet<String>();
      private ArrayList <String> classList = new ArrayList<String>();
      private ArrayList <String> packageList = new ArrayList<String>();
      private ArrayList <String> methodList = new ArrayList<String>();
      private Object[] packageNames;
      private HashMap <String, ArrayList> h = new HashMap <String, ArrayList>();
      public SaxParser()throws Exception{
          String fname = "eclipse/jel.xml";
         DefaultHandler handler = new DefaultHandler()
             private int numberOfClasses = 0;
         public void startElement(String namespaceURI,String localName, String qname, Attributes attrs)
              if(qname.equals("jelclass")) {
                   numberOfClasses ++;
              for(int i = 0; i< attrs.getLength();i++){
                    if(attrs.getQName(i).equals("type")){
                         classList.add(attrs.getValue(i));
                         if(attrs.getQName(i).equals("package")){
                              packageList.add(attrs.getValue(i));
                              packageSet.add(attrs.getValue(i));
              for(int i = 0; i< attrs.getLength();i++){
                   for(int j = 0; j < classList.size(); j++){
          if(attrs.getQName(i).equals("type") && attrs.getValue(i).equals(classList.get(j))){
              if(qname.equals("method")){
                    if(attrs.getQName(i).equals("name")){
                                h.put(classList.get(i), methodList.add(attrs.getValue(i));
               packageNames = new String[packageSet.size()];
              packageNames = packageSet.toArray();
         public void endElement(String namespaceURI,String localName, String qname){}};
        SAXParserFactory factory = SAXParserFactory.newInstance();
        SAXParser saxParser = factory.newSAXParser();
        saxParser.parse(new File(fname), handler);
     public int getPackageNumber(){
          return packageSet.size();
     public Object[] getPackageNames(){
          return packageNames;
     public ArrayList getPackageList(){
          return packageList;
     public ArrayList getClassList(){
          return classList;
     public ArrayList getMethodList(){
          return methodList;
      public static void main(String[] args)throws Exception{
           new SaxParser();
}I am currently pulling out the package names, pulling out the classnames and then mapping these in a separate class - this works because the class and package names are declared in the same line, so if a package name appears in the package list 7 times, i know this package has 7 classes, and therefore i count the first 7 classes out of an array of all the classes and know that these are the right 7 for that package. However, the methods are a bit different:
What I would like to do is to: for every class make a hashmap which maps the class name onto an arraylist of the methods, but i think i'm getting confused with my for loops. Or even just keep a tally of how many methods each class has, then I can work it out as i did with the packages -> classes.
Does anyone know where im going wrong, or have any ideas at all?
Thank you for your time,
beccy
:)

I don't know if stacks are specifically mentioned in any SAX documentation.
Basically, SAX sends you a stream of XML elements (open and close tags, characters, etc.), but it doesn't know anything about the underlying XML structure. You have to add that part (usually -- sometimes when writing a SAX application, you don't really care about the XML structure). XML structure is a tree.
If you've ever written a recursive function that spans a tree, you'll have an idea what to do. You can use a stack to keep track of where you are in the tree. For example, if you open tag A, then you're "in" the A element for subsequent content in that document; if you then open tag B, you're in the B element; but when you close the B tag, you need the stack to tell you that now you're back in the A element.
You may not need stacks, but it's likely. Find a good tutorial about SAX that mentions stacks and you'll be fine.
Edited by: paulcw on Nov 14, 2007 4:09 PM

Problem on sax parser

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