Parsing XML problem

I parse XML String -> Document the next way:
public static Document parseXml(String fragment) {
try {
DocumentBuilderFactory factory = DocumentBuilderFactory.
newInstance();
Document d = factory.newDocumentBuilder().parse(
new InputSource(new StringReader(fragment)));
return d;
} catch (SAXException e) {
} catch (ParserConfigurationException e) {
} catch (IOException e) {
return null;
In desktop applications all works correctly, but when I invoke this function in servlet which is run under Tomcat, it returns empty Document data. Can anybody explain me, where to find solution ?

How do you know it is returning "empty" Document data? And what do you mean by "empty"?

Similar Messages

Exception in XML Parser (format problem?)

Hi Experts,
I am working on IDOC -> AS2 Configuration and the AS2 Configuration has the below structure
<RecordSet>
     <Row1>
                   <row1 - field1>
                   <row1 - field2>
                   <row1 - field3>
     </Row1>
     <Row2>
                   <row2 - field1>
                   <row2 - field2>
                   <row2 - field3>
     </Row2>
     <Records>
          <Record1>
                    <Record1-Field1>
                    <Record1-Field1>
                    <Record1-Field1>
          </Record1>
          <Record2>
                    <Record2-Field1>
                    <Record2-Field1>
                    <Record2-Field1>
          </Record2>
     </Records>
</RecordSet>
We are getting the expected Structure when we AS2 Receiver has the xml format. But while doing module development with the strctxml2Plain, we are getting the below error in RWB CC Monitoring.
Message processing failed. Cause: com.sap.aii.messaging.adapter.trans.TransformException: Error converting Message: 'java.lang.Exception: Exception in XML Parser (format problem?):'java.lang.NullPointerException''; nested exception caused by: java.lang.Exception: Exception in XML Parser (format problem?):'java.lang.NullPointerException'
Any ideas, why this error we are getting.....
Thanks in advance,
Regards,
Vasu

Hi Vasu,
Not in the Mapping of IR.
In BIC Mapping Designer you have to test with the standard Mappings by providing the sample file whether the Conversion is happening correctly or not.
You have to take the same input file that what ever you are having now.
So that it will say clearly what is the problem in converting the XMLto the required EDI Format...
Check whether you have any Date Format Values are comming from the input file.
Regards
Seshagiri

Attempt to process file failed with Exception in XML Parser-format problem

Hi all,
Iam getting an unusual error in the J2EE stack in XI.
And the message is:
006-11-30 17:31:07 Error Attempt to process file failed with Exception in XML Parser (format problem?):'com.sap.engine.lib.xml.parser.NestedSAXParserException: Fatal Error: com.sap.engine.lib.xml.parser.ParserException: Invalid char #0xf(:main:, row:1, col:1044002)(:main:, row=1, col=1044002) -> com.sap.engine.lib.xml.parser.ParserException: Invalid char #0xf(:main:, row:1, col:1044002)' 2006-11-30 17:31:07 Error Exception caught by adapter framework: null 2006-11-30 17:31:07 Error Delivery of the message to the application using connection AFW failed, due to: RecoverableException.
My scenerio iam posting IDOC to a flat file with content conversion in the receiver side,the mapping got executed successfully and in the audit log i found that the error was after the 'Start converting XML document content to plain text'.
This means that error occured during content conversion of XML to the prescribed file format.
Can anyone suggest any better approach using which we may trace the junk data in IDoc. Manual adhoc approach could take time and is error prone.
Thanks in advance...
karun

Hi Bhavesh,
Thanks for the early reply. I checked the mapping and everything is fine and the output is also in valid XML format.
The audit log shows that the mapping got executed successfully and the error is after the step 'Start converting XML document content to plain text '. Is there any constraint in the file adapter regarding the message size for parsing.
2006-11-30 17:30:50 Success Transfer: "BIN" mode, size 2912595 bytes, character encoding -
2006-11-30 17:30:50 Success Start converting XML document content to plain text
2006-11-30 17:31:07 Error Attempt to process file failed with Exception in XML Parser (format problem?):'com.sap.engine.lib.xml.parser.NestedSAXParserException: Fatal Error: com.sap.engine.lib.xml.parser.ParserException: Invalid char #0xf(:main:, row:1, col:1044002)(:main:, row=1, col=1044002) -> com.sap.engine.lib.xml.parser.ParserException: Invalid char #0xf(:main:, row:1, col:1044002)'
2006-11-30 17:31:07 Error Exception caught by adapter framework: null
2006-11-30 17:31:07 Error Delivery of the message to the application using connection AFW failed, due to: RecoverableException.
2006-11-30 17:31:07 Success The asynchronous message was successfully scheduled to be delivered at Thu Nov 30 17:36:07 GMT 2006.
2006-11-30 17:31:07 Success The message status set to WAIT.
2006-11-30 17:31:08 Success Acknowledgement creation triggered for type: SystemErrorAck
2006-11-30 17:31:08 Success Acknowledgement sent successfully for type: SystemErrorAck
2006-11-30 17:36:08 Success Retrying to deliver message to the application. Retry: 1

Problem parsing XML with schema when extracted from a jar file

I am having a problem parsing XML with a schema, both of which are extracted from a jar file. I am using using ZipFile to get InputStream objects for the appropriate ZipEntry objects in the jar file. My XML is encrypted so I decrypt it to a temporary file. I am then attempting to parse the temporary file with the schema using DocumentBuilder.parse.
I get the following exception:
org.xml.sax.SAXParseException: cvc-elt.1: Cannot find the declaration of element '<root element name>'
This was all working OK before I jarred everything (i.e. when I was using standalone files, rather than InputStreams retrieved from a jar).
I have output the retrieved XML to a file and compared it with my original source and they are identical.
I am baffled because the nature of the exception suggests that the schema has been read and parsed correctly but the XML file is not parsing against the schema.
Any suggestions?
The code is as follows:
public void open(File input) throws IOException, CSLXMLException {
    InputStream schema = ZipFileHandler.getResourceAsStream("<jar file name>", "<schema resource name>");
    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    DocumentBuilder builder = null;
    try {
      factory.setNamespaceAware(true);
      factory.setValidating(true);
      factory.setAttribute(JAXP_SCHEMA_LANGUAGE, W3C_XML_SCHEMA);
      factory.setAttribute(JAXP_SCHEMA_SOURCE, schema);
      builder = factory.newDocumentBuilder();
      builder.setErrorHandler(new CSLXMLParseHandler());
    } catch (Exception builderException) {
      throw new CSLXMLException("Error setting up SAX: " + builderException.toString());
    Document document = null;
    try {
      document = builder.parse(input);
    } catch (SAXException parseException) {
      throw new CSLXMLException(parseException.toString());
    }

I was originally using getSystemResource, which worked fine until I jarred the application. The problem appears to be that resources returned from a jar file cannot be used in the same way as resources returned directly from the file system. You have to use the ZipFile class (or its JarFile subclass) to locate the ZipEntry in the jar file and then use ZipFile.getInputStream(ZipEntry) to convert this to an InputStream. I have seen example code where an InputStream is used for the JAXP_SCHEMA_SOURCE attribute but, for some reason, this did not work with the InputStream returned by ZipFile.getInputStream. Like you, I have also seen examples that use a URL but they appear to be URL's that point to a file not URL's that point to an entry in a jar file.
Maybe there is another way around this but writing to a file works and I set use File.deleteOnExit() to ensure things are tidied afterwards.

Problem in parsing XML Schema

I am trying to parse XML Schema using XSOM. The Schema has <xs:include>s
e.g. I have first.xsd which includes second.xsd and second.xsd again includes third.xsd.
First.xsd
<xs:include schemaLocation="../Second.xsd">....
Second.xsd
<xs:include schemaLocation="Third.xsd">....
When I parse "First.xsd" parser passes the correct path "C:/XSDSchema/Second.xsd"(First.xsd resides in "C:/XSDSchema/Schema/") to the EntityResolver's resolveEntity method. But for Second.xsd it passes "Third.xsd" only (Third.xsd resides in "C:/XSDSchema/" ) .
Any Idea ?????

Here is a screenshort of the part of my workflow:
In the mappings of the "Set Value" activity, I have one line with those properties:
Location: /process_data/bonusValidationForm/object/data/xdp/datasets/data/BonusValidationForm/buMan agerID
Expression: /process_data/currentUser/object/@userId
Where:
bonusValidationForm is a process variable of my workflow that point my xdp form
buManagerID is the textfield I want to set
currentUser is a process variable (type User) that was well setted by the task Find BU Manager

Problem parsing xml in J2ME (using kxml2)

Hello.
May someone who knows how to use kxml help me please?
I'll try to be straight forward. (Please excuse my imperfect English)
My xml file look something like this:
<?xml version="1.0" encoding="utf-8"?>
<sample_tag1 xmlns:mysample="http://www.sample001.com/sample01schema">
<feature name=tag1_feature>
     <test name=xxxxx id=200 message=Hello.></test>
</feature>
<catalog name="shelf">
     <booklist name="book1" label="b1"></booklist>
     <booklist name="book2" label="b2"></booklist>
     <booklist name="book3" label="b3"></booklist>
</catalog>
</sample_tag1>
And here's my code
          //http request
               try{
               //I can guarantee that the URL is valid
httpConnection = (HttpConnection) Connector.open(URL);
}catch(IOException ioe){
ioe.printStackTrace();
               //Create the parser
KXmlParser parser = new KXmlParser();
try{
                    //I use this code section to test if the xml file is properly placed in the inputStream.
char[] tempChar = new char[500];
isr = new InputStreamReader(httpConnection.openInputStream());
isr.read(tempChar);
for(int i=0; i<tempChar.length;i++){
System.out.print(tempChar);
//set the xml input
parser.setInput(isr);
//skip the "<?xml version="1.0" encoding="utf-8"?>" tag
parser.nextTag();
parser.require(XmlPullParser.START_TAG, null, "sample_tag1");
                    System.out.println("name : " + parser.getName());
System.out.println("namespace : " + parser.getNamespace());
parser.nextTag(); // ***1
I compiled the app and run, here's the result:
name : sample_tag1
namespace :
org.xmlpull.v1.XmlPullParserException: attr value delimiter missing! (position:START_TAG <feature name='http://www.sample001.com/sample01schema'>@3:15 in java.io.InputStreamReader@e938beb1)
at org.kxml2.io.KXmlParser.exception(+47)
at org.kxml2.io.KXmlParser.error(+45)
at org.kxml2.io.KXmlParser.parseStartTag(+285)
at org.kxml2.io.KXmlParser.nextImpl(+314)
at org.kxml2.io.KXmlParser.next(+23)
at org.kxml2.io.KXmlParser.nextTag(+24)
at MyMidlet$ReadXML.run(MyMidlet.java:235)
But when I comment the last line (parser.nextTag(); // ***1), here's the result:
name : sample_tag1
namespace :
My code is the clone of the one in this tutorial:
http://www.developer.com/ws/article.php/3759471
where he get the weather forecast from Yahoo Weather RSS
What did I do wrong? I tried looking up google for "attr value delimiter missing!" but found no useful information.
Thank you in advance. =)

Please read this topic. I posted an answer about parsing xml using kxml2
http://forums.sun.com/thread.jspa?threadID=5291592&start=0&tstart=0
Regards,
David

Need help on parsing xml file...

Hi all,
I need to collect some data from an Xml file using java. I have the following code with me but I am unable to get the required result. I am unable to get the data from the tags belonging to the header and footer elements. Please find the code and the sample xml file below.
Program to parse XML:
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
public class JobLogDetails3{
     //No generics
     List myJobs;
     Document dom;
     public JobLogDetails3(){
          //create a list to hold the job objects
          myJobs = new ArrayList();
     public void runJobDetails() {
          //parse the xml file and get the dom object
          parseXmlFile();
          //get each joblog element and create a job object
          parseDocument();
          //Iterate through the list and print the data
          printData();
     private void parseXmlFile(){
          //get the factory
          DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
          try {
               //Using factory get an instance of document builder
               DocumentBuilder db = dbf.newDocumentBuilder();
               //parse using builder to get DOM representation of the XML file
               dom = db.parse("test.xml");
          }catch(ParserConfigurationException pce) {
               pce.printStackTrace();
          }catch(SAXException se) {
               se.printStackTrace();
          }catch(IOException ioe) {
               ioe.printStackTrace();
     private void parseDocument(){
          //get the root elememt
          Element docEle = dom.getDocumentElement();
          //get a nodelist of <joblog> elements
          NodeList nl = dom.getElementsByTagName("*");
          if(nl != null && nl.getLength() > 0) {
               for(int i = 0 ; i < nl.getLength();i++) {
                    //get the joblog element
                    Element el = (Element)nl.item(i);
                    //get the joblog object
                    Job J = getJob(el);
                    //add it to list
                    myJobs.add(J);
     * I take an joblog element and read the values in, create
     * an joblog object and return it
     * @param JobEl
     * @return
     private Job getJob(Element JobEl) {
          //for each <joblog> element get text or int values of
          //name ,id, age and name
          String jobServer = getTextValue(JobEl,"server");
          String jobName = getTextValue(JobEl,"name");
          String jobClient = getTextValue(JobEl,"machine_name");
          String jobStart = getTextValue(JobEl,"start_time");
          String jobType = getTextValue(JobEl,"type");
          String jobEnd = getTextValue(JobEl,"end_time");
          String jobSize = getTextValue(JobEl,"new_processed_bytes");
          //Create a new Job with the value read from the xml nodes
          Job J = new Job(jobServer,jobName,jobClient,jobStart,jobType,jobEnd,jobSize);
          return J;
     * I take a xml element and the tag name, look for the tag and get
     * the text content
     * i.e for <employee><name>John</name></employee> xml snippet if
     * the Element points to employee node and tagName is name I will return John
     * @param ele
     * @param tagName
     * @return
     private String getTextValue(Element ele, String tagName) {
          String textVal = null;
          NodeList nl = ele.getElementsByTagName(tagName);
          if(nl != null && nl.getLength() > 0) {
               Element el = (Element)nl.item(0);
               textVal = el.getFirstChild().getNodeValue();
          return textVal;
     * Calls getTextValue and returns a int value
     * @param ele
     * @param tagName
     * @return
     private int getIntValue(Element ele, String tagName) {
          //in production application you would catch the exception
          return Integer.parseInt(getTextValue(ele,tagName));
     * Iterate through the list and print the
     * content to console
     private void printData(){
          System.out.println("No of Jobs '" + myJobs.size() + "'.");
          Iterator it = myJobs.iterator();
          while(it.hasNext()) {
               System.out.println(it.next().toString());
     public static void main(String[] args){
          //create an instance
          JobLogDetails JLD = new JobLogDetails();
          //call run example
          JLD.runJobDetails();
Job Class
public class Job {
     private String jobServer;
private String jobName;
private String jobClient;
private String jobStart;
private String jobType;
private String jobEnd;
private String jobSize;
     public Job(){
     public Job(String jobServer,String jobName,String jobClient,String jobStart,String jobType,String jobEnd,String jobSize ) {
          this.jobServer = jobServer;
          this.jobName = jobName;
          this.jobClient = jobClient;
this.jobStart = jobStart;
          this.jobType = jobType;
this.jobEnd = jobEnd;
this.jobSize = jobSize;
     public String getjobServer() {
          return jobServer;
     public void setjobServer(String jobServer) {
          this.jobServer = jobServer;
     public String getjobName() {
          return jobName;
     public void setjobname(String jobName) {
          this.jobName = jobName;
     public String getjobClient() {
          return jobClient;
     public void setjobClient(String jobClient) {
          this.jobClient = jobClient;
public String getjobStart() {
          return jobStart;
     public void setjobStart(String jobStart) {
          this.jobStart = jobStart;
public String getjobType() {
          return jobType;
     public void setjobType(String jobType) {
          this.jobType = jobType;
public String getjobEnd() {
          return jobEnd;
     public void setjobEnd(String jobEnd) {
          this.jobEnd = jobEnd;
public String getjobSize() {
          return jobSize;
     public void setjobSize(String jobSize) {
          this.jobSize = jobSize;
     public String toString() {
          StringBuffer sb = new StringBuffer();
sb.append(getjobServer());
          sb.append(",");
sb.append(getjobName());
          sb.append(",");
          sb.append(getjobClient());
          sb.append(",");
          sb.append(getjobType());
          sb.append(",");
          sb.append(getjobStart());
          sb.append(",");
          sb.append(getjobEnd());
          sb.append(",");
          sb.append(getjobSize());
          sb.append(",");
          return sb.toString();
Sample XML File:
<?xml version="1.0" encoding="UTF-16" ?>
- <joblog>
<job_log_version version="2.0" />
- <header>
<filler>======================================================================</filler>
<server>Job server: TGBBAK</server>
<name>Job name: TGBSAP4-SQL-SQL DB Servers S2T - High-Weekly Full Backup</name>
<start_time>Job started: 26 September 2011 at 01:00:04</start_time>
<type>Job type: Backup</type>
<log_name>Job Log: GFD_TGBBAK_71887.xml</log_name>
<filler>======================================================================</filler>
</header>
<media_mount_date>Drive and media mount requested: 26/09/2011 01:00:04</media_mount_date>
- <media_drive_and_media_info>
<media_mount_date>Drive and media information from media mount: 26/09/2011 01:00:39</media_mount_date>
<robotic_library_name>Robotic Library Name: HP 1</robotic_library_name>
<drive_name>Drive Name: LTO4_2</drive_name>
<slot>Slot: 43</slot>
<media_label>Media Label: 000059L</media_label>
<media_guid>Media GUID: {a6ca0062-7a6f-4b4b-8144-732ca25f2f9d}</media_guid>
<media_overwrite_date>Overwrite Protected Until: 25/10/2011 19:24:58</media_overwrite_date>
<media_append_date>Appendable Until: 02/10/2011 14:00:30</media_append_date>
<media_set_target>Targeted Media Set Name: Weekly Tape</media_set_target>
</media_drive_and_media_info>
- <backup>
<filler>======================================================================</filler>
<title>Job Operation - Backup</title>
<append_or_overwrite>Media operation - append.</append_or_overwrite>
<compression>Compression Type: Hardware [if available, otherwise none]</compression>
<verify_option>WARNING: The option 'Verify after backup completes' was not selected. Performing a verify operation to make sure that media can be read after the backup has completed is recommended.</verify_option>
<filler>======================================================================</filler>
- <machine>
<machine_name>TGBSAP4.Tetley.Grp</machine_name>
<info>Network control connection is established between 10.22.2.18:3271 <--> 10.22.2.4:10000</info>
<info>Network data connection is established between 10.22.2.18:3301 <--> 10.22.2.4:3094</info>
- <set>
<set_resource_name>TGBSAP4.Tetley.Grp</set_resource_name>
<tape_name>Family Name: "Media created 25/09/2011 13:59:55"</tape_name>
- <volume>
<display_volume>Backup of "TGBSAP4.Tetley.Grp "</display_volume>
</volume>
<description>Backup set #45 on storage media #1 Backup set description: "Weekly Full Backup"</description>
<backup_type>Backup Method: Full - Back up entire database or filegroup</backup_type>
<agent_started>Microsoft SQL Server Agent: Started</agent_started>
<start_time>Backup started on 26/09/2011 at 01:01:45.</start_time>
- <database>
<database>Database PRD</database>
</database>
- <database>
<database>Database master</database>
</database>
- <database>
<database>Database model</database>
</database>
- <database>
<database>Database msdb</database>
</database>
<end_time>Backup completed on 26/09/2011 at 02:42:25.</end_time>
- <summary>
<backed_up_database>Backed up 4 databases</backed_up_database>
<new_processed_bytes>Processed 573363576542 bytes in 1 hour, 40 minutes, and 40 seconds.</new_processed_bytes>
<vlm_hist_rateformat2>Throughput rate: 5432 MB/min</vlm_hist_rateformat2>
</summary>
<filler>----------------------------------------------------------------------</filler>
</set>
</machine>
</backup>
- <footer>
<filler>======================================================================</filler>
<end_time>Job ended: 26 September 2011 at 02:43:12</end_time>
<engine_completion_status>Job completion status: Successful</engine_completion_status>
<filler>======================================================================</filler>
<completeStatus>19</completeStatus>
</footer>
</joblog>

1. your code does not compile (in your main method you try to create an instance of a class which does not exist).
2. your XML document is not well formed.
+[Fatal Error] test.xml:34:74: The content of elements must consist of well-formed character data or markup.+
org.xml.sax.SAXParseException: The content of elements must consist of well-formed character data or markup.
Maybe there are other problems but you can start by fixing these.

Parse XML in a java stored proc

I am trying to parse an xml document in a java stored procedure. Just following my nose, I have developed a stored proc that works fine in development (outside the database using JRE 1.4.1) using the Xerces 2.5 parser. But, after having transferred the xerces xercesImpl.jar, xmlapis.jar, and my implementation class into oracle using loadjava when I call my stored proc the code throws an exception trying to build the document with an error like:
NoClassDef exception org.apache.xerces.jaxp.DocumentFactoryBuilderImpl
My Code looks like this:
import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.FactoryConfigurationError;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.Document;
import org.xml.sax.SAXException;
InputStream is = getXMLAsInputStream(xml);
try {
DocumentBuilderFactory factory =
DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
Document document = builder.parse( is );
... parse the document ....
catch (FactoryConfigurationError e) {
// unable to get a document builder factory
The exception caught is a FactoryConfigurtionError.
I'm not particularly attached to xerces, I'm really just looking for a way to parse XML inside my java stored proc, so any help to solve my problem, or an alternative suggestion will be greatly appreciated.
thanks
Dale

I looked again and sure enough the xerces implementation classes were missing. I had run a .cmd file containing these two lines, but it looks like only the first one ran...
loadjava -u ncc/xyz@usd -v -r M:\Database\JavaGeocode\Xerces2_5_0\xml-apis.jar
loadjava -u ncc/xyz@usd -v -r M:\Database\JavaGeocode\Xerces2_5_0\xercesImpl.jar
Now I've got everything working fine with Xerces!
Dale

Error parsing XML: {err}FORG0005: expected exactly one item, got 0 items

Hi ,
Good Morning to all
in osb replace action am using xquery transformation resource.
source code of xquery is :
====================================================================================
(:: pragma bea:global-element-parameter parameter="$addition1" element="ns0:Addition" location="../wsdl/NewWSDLFile.wsdl" ::)
(:: pragma bea:global-element-return element="ns1:process" location="../bpelprocess1_client_ep.wsdl" ::)
declare namespace ns1 = "http://xmlns.oracle.com/POProcessing/AdditionOSB/BPELProcess1";
declare namespace ns0 = "http://www.example.org/NewWSDLFile/";
declare namespace xf = "http://tempuri.org/ServiceCallout/trans/route/";
declare function xf:route($addition1 as element(ns0:Addition))
as element(ns1:process) {
<ns1:process>
<ns1:value1>{ data($addition1/value1) }</ns1:value1>
<ns1:value2>{ data($addition1/value2) }</ns1:value2>
</ns1:process>
declare variable $addition1 as element(ns0:Addition) external;
xf:route($addition1)
=====================================================
at the time of running "error is Error parsing XML: {err}FORG0005: expected exactly one item, got 0 items " in replace action.
how to resolve this problem...
Thanks & Regards
venky

The reason for the error is the xquery is not able to find the values in the input... Check the input and namespaces...
Try...
<ns1:value1>{ data($addition1/ns0:value1) }</ns1:value1>
<ns1:value2>{ data($addition1/ns0:value2) }</ns1:value2>Cheers,
Vlad

How do you store parsed XML data in an array

Hi, i am trying to complete a small program which implements the SAX parser to parse an XML file. My problem is that i am writing a custom class to store the parsed data into an array, and then make the array available to the main program via a simple method which returns the array. I know this must be very simple to do, but i seem to have developed a mental block with this part of the program. I can parse the data and print all the elements to the screen, but i just cant figure out how to store all the data elements into the array. I will post the class which is supposed to do this, and ask anyone out there if they know what i'm doing wrong, and also, if there is a more effeicient way of achieving this ( i expect there definitely is!! but i have never used the SAX parser before and am getting confused by the API docs on it!!) Any help very much appreciated.
Here is my attempt at coding the class to handle the parsed XML data
class Sink extends org.xml.sax.helpers.DefaultHandler
     implements org.xml.sax.ContentHandler{
Customer[] customers = new Customer[20];
     int count = 1;
     int x = 0;
     int tagCount = 0;
     String name;
String custID;
     String username;
     String address;
     String phoneNum;
public void startElement(String uri, String localName, String rawName, final org.xml.sax.Attributes attributes)throws org.xml.sax.SAXException{
//count the number of <name> tags in the XML file
     if(rawName.equals("name")){
          tagCount++;
public void characters(char[] ch, int start, int len){
//get the current string
     String text = new String(ch, start, len);
     String text1 = text.trim();
//there are 5 elements for each customer found in the XML file so when the count reaches 6
// i reset this to 1
     if(count == 6){
     count = count - 5;
     if(text1.length()>0 && count == 1){
          name = text1;
          System.out.println(name);
          }else{
     if(text1.length()>0 && count == 2){
          custID = text1;
          System.out.println(custID);
               }else{
               if(text1.length()>0 && count == 3){
               username = text1;
               System.out.println(username);
               }else{
                    if(text1.length()>0 && count == 4){
                    address = text1;
                    System.out.println(address);
                    }else{
                    if(text1.length()>0 && count == 5){
                         phoneNum = text1;
                         System.out.println(phoneNum);
                         //add data to the customer array
                         customers[x] = new Customer(name, custID, username, address, phoneNum);
// increment the array index counter
                    x = x+1;
                    }//end of if
                    }//end else
                    }//end else
               }//end else
          }//end else
}//end of characters method
public void endDocument(){
     System.out.println("There are " + tagCount +
     " <name> elements.");
}//end of class Sink
Before the end of this class i also need to make the array available to the calling program!!
Any help would be much appreciated
Thanks
Iain

Ok, yer going about this all the wrong way. You shouldn't have to maintain a count of all the elements. Basically you are locking yourself into the XML tags not only all being there but are assuming they are all in the same order. What you should do is in your characters() method, put all of the characters into a string buffer. Then, in endElement() (which you dont use btw, you should) you grab the information that is in the string buffer and store it into your Customer object depending on what the tagName is.
Also, you should probably use a List to store all the Customer objects and not an single array, it's more dynamic and you arent locked into a set number of Customers.
I wont do it all for you, but I'll give you a good outline to use.
public class CustomerHandler extends DefaultHandler {
    private java.util.List customerList; // List of Customer objects
    private java.util.StringBuffer buf;   // StringBuffer to store the string of characters between the start and end tags
    private Customer customer; // Customer object that is initialized with each entry.
    public CustomerHandler() {
        customerList = new java.util.ArrayList();   // Initialize the List
        buf = new java.util.StringBuffer();   // Initialize the string buffer
    // Make your customer list available to other classes
    public java.util.List getCustomerList() {
        return customerList;
    public void startElement(String nsURI, String sName, String tagName, Attributes attributes) throws SAXException {
        // Clear the String Buffer
        // If the tagName is "Customer" then create a new Customer object
    public void characters(char[] ch, int start, int length) {
        // append the characters into the string buffer
    public void endElement(String nsURI, String sName, String tagName) throws SAXException {
        // If the tagName is "Customer" add your customer object to the List
        // Place the data from the String Buffer into a String
        // Depending on the tagName, call the appropriate set method on your customer object
}

Can't parse xml from applet using dom on linux on Netscape 7 using jre 1.4.

Hi,
I can't seem to parse xml from an applet on linux on Netscape 7 using the JRE 1.4.
My code looks like the following:
StringBufferInputStream is = new StringBufferInputStream("<foo></foo>");
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = null;
try
  builder = factory.newDocumentBuilder();
  domDocument = builder.parse(is); // this line creates an exception
catch (Exception e)
  System.out.println(e);
This code works fine from an applet on windows. On linux, the error message is:
java.security.AccessControlException: access denied (java.util.PropertyPermission entityExpansionLimit read)
I've tried both JRE 1.4.0_04 and 1.4.1_03
Thanks!
Q

There's another posting about this same problem (platform unspecified), but the same error message. I was also having this problem (Windows 1.4.03) and swithced back to 1.4.01 and the problem went away. In the future, I may sign my applets to get a more generous security policy. But, I'm sure it'll be a lot of work (vs. a line of code somewhere).

How to parse XML to Java object... please help really stuck

Thank you for reading this email...
If I have a **DTD** like:
<!ELEMENT person (name, age)>
<!ATTLIST person
     id ID #REQUIRED
>
<!ELEMENT name ((family, given) | (given, family))>
<!ELEMENT age (#PCDATA)>
<!ELEMENT family (#PCDATA)>
<!ELEMENT given (#PCDATA)>
the **XML** like:
<person id="a1">
<name>
     <family> Yoshi </family>
     <given> Samurai </given>
</name>
<age> 21 </age>
</person>
**** Could you help me to write a simple parser to parse my DTD and XML to Java object, and how can I use those objects... sorry if the problem is too basic, I am a beginner and very stuck... I am very confuse with SAXParserFactory, SAXParser, ParserAdapter and DOM has its own Factory and Parser, so confuse...
Thank you for your help, Yo

Hi, Yo,
Thank you very much for your help. And I Wish you are there...I'm. And I plan to stay - It's sunny and warm here in Honolulu and the waves are up :)
A bit more question for dear people:
In the notes, it's mainly focus on JAXB,
1. Is that mean JAXB is most popular parser for
parsing XML into Java object? With me, definitely. There are essentially 3 technologies that allow you to parse XML documents:
1) "Callbacks" (e.g. SAX in JAXP): You write a class that overrides 3 methods that will be called i) whenever the parser encounters a start tag, ii) an end tag, or iii) PCDATA. Drawback: You have to figure out where the heck in the document hierarchy you are when such a callback happens, because the same method is called on EACH start tag and similarly for the end tag and the PCDATA. You have to create the objects and put them into your own data structure - it's very tedious, but you have complete control. (Well, more or less.)
2) "Tree" (e.g. DOM in JAXP, or it's better cousin JDOM): You call a parser that in one swoop creates an entire hierarchy that corresponds to the XML document. You don't get called on each tag as with SAX, you just get the root of the resulting tree. Drawback: All the nodes in the tree have the same type! You probably want to know which tags are in the document, don't you? Well, you'll have to traverse the tree and ask each node: What tag do you represent? And what are your attributes? (You get only strings in response even though your attributes often represent numbers.) Unless you want to display the tree - that's a nice application, you can do it as a tree model for JTree -, or otherwise don't care about the individual tags, DOM is not of much help, because you have to keep track where in the tree you are while you traverse it.
3) Enter JAXB (or Castor, or ...): You give it a grammar of the XML documents you want to parse, or "unmarshall" as the fashion dictates to call it. (Actually the name isn't that bad, because "parsing" focuses on the input text while "unmarshalling" focuses on the objects you get, even though I'd reason that it should be marshalling that converts into objects and unmarshalling that converts objects to something else, and not vice versa but that's just my opinion.) The JAXB compiler creates a bunch of source files each with one (or now more) class(es) (and now interfaces) that correspond to the elements/tags of your grammar. (Now "compiler" is a true jevel of a misnomer, try to explain to students that after they run the "compiler", they still need to compile the sources the "compiler" generated with the real Java compiler!). Ok, you've got these sources compiled. Now you call one single method, unmarshall() and as a result you get the root node of the hierarchy that corresponds to the XML document. Sounds like DOM, but it's much better - the objects in the resulting tree don't have all the same type, but their type depends on the tag they represent. E.g if there is the tag <ball-game> then there will be an object of type myPackage.BallGame in your data structure. It gets better, if there is <score> inside <ball-game> and you have an object ballGame (of type BallGame) that you can simply call ballGame.getScore() and you get an object of type myPackage.Score. In other words, the child tags become properties of the parent object. Even better, the attributes become properties, too, so as far as your program is concerned there is no difference whether the property value was originally a tag or an attribute. On top of that, you can tell in your schema that the property has an int value - or another primitive type (that's like that in 1.0, in the early release you'll have to do it in the additional xjs file). So this is a very natural way to explore the data structure of the XML document. Of course there are drawbacks, but they are minor: daunting complexity and, as a consequence, very steep learning curve, documentation that leaves much to reader's phantasy - read trial and error - (the user's guide is too simplicistic and the examples too primitive, e.g. they don't even tell you how to make a schema where a tag has only attributes) and reference manual that has ~200 pages full of technicalities and you have to look with magnifying glas for the really usefull stuff, huge number of generated classes, some of which you may not need at all (and in 1.0 the number has doubled because each class has an accompanying interface), etc., etc. But overall, all that pales compared to the drastically improved efficiency of the programmer's efforts, i.e. your time. The time you'll spend learning the intricacies is well spent, you'll learn it once and then it will shorten your programming time all the time you use it. It's like C and Java, Java is order of magnitude more complex, but you'd probably never be sorry you gave up C.
Of course the above essay leaves out lots and lots of detail, but I think that it touches the most important points.
A word about JAXB 1.0 vs. Early Release (EA) version. If you have time, definitively learn 1.0, they are quite different and the main advantage is that the schema combines all the info that you had to formulate in the DTD and in the xjs file when using the EA version. I suggested EA was because you had a DTD already, but in retrospect, you better start from scratch with 1.0. The concepts in 1.0 are here to stay and once your surmounted the learning curve, you'll be glad that you don't have to switch concepts.
When parser job is done,
what kind of Java Object we will get? (String,
InputStream or ...)See above, typically it's an object whose type is defined as a class (and interface in 1.0) within the sources that JABX generates. Or it can be a String or one of the primitive types - you tell the "compiler" in the schema (xjs file in EA) what you want!
2. If we want to use JAXB, we have to contain a
XJS-file? Something like:In EA, yes. In 1.0 no - it's all in the schema.
I am very new to XML, is there any simpler way to get
around them? It has already take me 4 days to find a
simple parser which give it XML and DTD, then return
to me Java objects ... I mean if that kind of parser
exists....It'll take you probably magnitude longer that that to get really familiar with JAXB, but believe me it's worth it. You'll save countless days if not weeks once you'll start developing serious software with it. How long did it take you to learn Java and it's main APIs? You'll either invest the time learning how to use the software others have written, or you invest it writing it yourself. I'll take the former any time. But it's only my opinion...
Jan

How to parse xml

Hi All
I want to parse xml document which contains more then one occurrence of particular element.
I want to get some sub elements of that element and want take action on the basis of param tag inside this sub element.
for example :
<appender name="first" class="tempclass...">
<param name="File" value="d:/test.log" />
<filter class="">
<param name="LevelToMatch" value="sdsds" />
<param name="OtherParam" value="bla bla" />
</filter>
</appender>
<appender name="second" class="tempclass...">
</appender>
my problem is how do i differentiate all "<appender>".
I want values of "File" and "LevelToMatch" for each declaired appender
and depending upon the values i want to take some decision.
I dont know XML much
I am using DOM parser.
Please help me ASAP.
Thanks in advance,

hi,
i hope u need to get the attribute values, right...
if yes..create the DocumentBuilderFactory for the xml the uisng buildFactory method u will get the parser...from parser u cann go for anything....
if u r not clearly, reply where do u struck...
bye,
suryakant.

How to parse xml (kXML)

I have some problems when I try to parse xml with the kXML parser. My xml doc looks like this:
<?xml version="1.0" encoding="utf-8" ?>
- <dsGreenRoom>
- <Rooms>
- <RoomsInfo>
<ID>1</ID>
<Name>Rum 101</Name>
<Type>Dubbelrum</Type>
<NumberOfBeds>2</NumberOfBeds>
<Rate>980,00</Rate>
<Currency>SEK</Currency>
<Description>Ett genomtrevligt rum</Description>
</RoomsInfo>
- <RoomsInfo>
<ID>2</ID>
<Name>Mellanrummet</Name>
<Type>Enkelrum</Type>
<NumberOfBeds>1</NumberOfBeds>
<Rate>650,00</Rate>
<Currency>SEK</Currency>
<Description>Ett litet tr?ngt rum i mitten</Description>
</RoomsInfo>
- <RoomsInfo>
<ID>3</ID>
<Name>Rum 102</Name>
<Type>Flerb?ddsrum</Type>
<NumberOfBeds>3</NumberOfBeds>
<Rate>1250,00</Rate>
<Currency>SEK</Currency>
<Description>Ett ?nnu trevligare rum</Description>
</RoomsInfo>
</Rooms>
</dsGreenRoom>
And my code looks like this:
KXmlParser parser = new KXmlParser();
               parser.setInput(is, null);
               Document doc = new Document();
               doc.parse(parser);
               int child_count = root.getChildCount();
               System.out.println("child = " + child_count + "\n");
               for (int i=0; i < child_count; i++) {
          if (root.getType(i) == Node.ELEMENT) {
               Element kid = root.getElement(i);
                    System.out.println("kid = " + kid.getName());
               int babies = kid.getChildCount();
               System.out.println("babies = " + babies);
               for (int j=0; j < babies; j++) {
                    if (kid.getType(j) == Node.ELEMENT) {
                         Element room = kid.getElement(j);
                         System.out.println("room.getType() = " + room.getType(j));
                    if (room.getName().equals("ID")) {
          System.out.println("elName.getName() = " + room.getName());
          System.out.println("elName.geText() = " + room.getText(j));
          else if (room.getName().equals("Name")) {
          System.out.println("elName.getName() = " + room.getName());
          System.out.println("elName.geText() = " + room.getText(j));
               } // end for(int j...)
          } // end if (root.getType(i)
          } //for (int i...)
The problem is that I don't know how to get the values out of the tags:
<ID>1</ID>
<Name>Rum 101</Name>
<Type>Dubbelrum</Type>
<NumberOfBeds>2</NumberOfBeds>
<Rate>980,00</Rate>
<Currency>SEK</Currency>
<Description>Ett genomtrevligt rum</Description>
It's no problem to get the value from the firsts i.e. <ID> but I don't know how to get the value from <Name> ... <Description>. I have looked att examples but I don't understand how to do this. Can someone please help me =)

okay, sorry, I only read the half of your problem ;-)
You can read the content using the getText(0) method. the 0 indicates the number of the children which you want to get. That is always a 0 because you have always just one text-children in your text-tags. The content is again a children of type text!
hth
Kay

How to parse XML against XSD,DTD, etc.. locally (no internet connection) ?

i've searched on how to parse xml against xsd,dtd,etc.. without the needs of internet connection..
but unfortunately, only the xsd file can be set locally and still there needs the internet connection for the other features, properties.
XML: GML file input from gui
XSD: input from gui
javax.xml
package demo;
import java.io.File;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import javax.xml.XMLConstants;
import javax.xml.transform.Source;
import javax.xml.transform.stream.StreamSource;
import javax.xml.validation.Schema;
import javax.xml.validation.SchemaFactory;
import javax.xml.validation.Validator;
import org.xml.sax.SAXException;
public class Sample1WithJavaxXML {
     public static void main(String[] args) {
          URL schemaFile = null;
          try {
               //schemaFile = new URL("http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd");
               File file0 = new File("AppSchema-C01-v1_0.xsd");
               schemaFile = new URL(file0.toURI().toString());
          } catch (MalformedURLException e1) {
               // TODO Auto-generated catch block
               e1.printStackTrace();
          //Source xmlFile = new StreamSource(new File("web.xml"));
          Source xmlFile = new StreamSource(new File("C01.xml"));
          SchemaFactory schemaFactory = SchemaFactory
              .newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
          //File file1 = new File("XMLSchema.dtd");
          //SchemaFactory schemaFactory = SchemaFactory
               //.newInstance("javax.xml.validation.SchemaFactory:XMLSchema.dtd");
          Schema schema = null;
          try {
               schema = schemaFactory.newSchema(schemaFile);
          } catch (SAXException e1) {
               // TODO Auto-generated catch block
               e1.printStackTrace();
          Validator validator = schema.newValidator();
          try {
            validator.validate(xmlFile);
            System.out.println(xmlFile.getSystemId() + " is valid");
          } catch (SAXException e) {
            System.out.println(xmlFile.getSystemId() + " is NOT valid");
            System.out.println("Reason: " + e.getLocalizedMessage());
          } catch (IOException e) {
               // TODO Auto-generated catch block
               e.printStackTrace();
}Xerces
package demo;
import java.io.File;
import java.util.Date;
import org.apache.xerces.parsers.DOMParser;
public class SchemaTest {
     private String xmlFile = "";
     private String xsdFile = "";
     public SchemaTest(String xmlFile, String xsdFile) {
          this.xmlFile = xmlFile;
          this.xsdFile = xsdFile;
     public static void main (String args[]) {
          File file0 = new File("AppSchema-C01-v1_0.xsd");
          String xsd = file0.toURI().toString();
          SchemaTest testXml = new SchemaTest("C01.xml",xsd);
          testXml.process();
     public void process() {
          File docFile = new File(xmlFile);
          DOMParser parser = new DOMParser();
          try {
               parser.setFeature("http://xml.org/sax/features/validation", true);
               parser.setFeature("http://apache.org/xml/features/validation/schema", true);
               parser.setProperty("http://apache.org/xml/properties/schema/external-noNamespaceSchemaLocation",
                         xsdFile);
               ErrorChecker errors = new ErrorChecker();
               parser.setErrorHandler(errors);
               System.out.println(new Date().toString() + " START");
               parser.parse(docFile.toString());
          } catch (Exception e) {
               System.out.print("Problem parsing the file.");
               System.out.println("Error: " + e);
               System.out.println(new Date().toString() + " ERROR");
               return;
          System.out.println(new Date().toString() + " END");
}

Thanks a lot Sir DrClap..
I tried to use and implement the org.w3c.dom.ls.LSResourceResolver Interface which is based on the SAX2 EntityResolver.
please give comments the way I implement it. Here's the code:
LSResourceResolver Implementation
import org.w3c.dom.ls.LSInput;
import org.w3c.dom.ls.LSResourceResolver;
import abc.xml.XsdConstant.Path.DTD;
import abc.xml.XsdConstant.Path.XSD;
public class LSResourceResolverImpl implements LSResourceResolver {
     public LSResourceResolverImpl() {
      * {@inheritDoc}
     @Override
     public LSInput resolveResource(String type, String namespaceURI, String publicId, String systemId, String baseURI) {
          ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
          LSInput input = new LSInputImpl(publicId, systemId, baseURI);
          if ("http://www.w3.org/2001/xml.xsd".equals(systemId)) {
               input.setByteStream(classLoader.getResourceAsStream(XSD.XML));
          } else if (XsdConstant.PUBLIC_ID_XMLSCHEMA.equals(publicId)) {
               input.setByteStream(classLoader.getResourceAsStream(DTD.XML_SCHEMA));
          } else if (XsdConstant.PUBLIC_ID_DATATYPES.equals(publicId)) {
               input.setByteStream(classLoader.getResourceAsStream(DTD.DATATYPES));
          return input;
}I also implement org.w3c.dom.ls.LSInput
import java.io.InputStream;
import java.io.Reader;
import org.w3c.dom.ls.LSInput;
public class LSInputImpl implements LSInput {
     private String publicId;
     private String systemId;
     private String baseURI;
     private InputStream byteStream;
     private String stringData;
     public LSInputImpl(String publicId, String systemId, String baseURI) {
          super();
          this.publicId = publicId;
          this.systemId = systemId;
          this.baseURI = baseURI;
     //getters & setters
}Then, here's the usage/application:
I create XMLChecker class (SchemaFactory implementation is Xerces)
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import javax.xml.XMLConstants;
import javax.xml.stream.FactoryConfigurationError;
import javax.xml.transform.Source;
import javax.xml.transform.stream.StreamSource;
import javax.xml.validation.Schema;
import javax.xml.validation.SchemaFactory;
import javax.xml.validation.Validator;
import org.xml.sax.ErrorHandler;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
import abc.xml.XsdConstant.Path.XSD;
public class XMLChecker {
     private ErrorMessage errorMessage = new ErrorMessage();
     public boolean validate(String filePath){
          final ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
          List<Source> schemas = new ArrayList<Source>();
          schemas.add(new StreamSource(classLoader.getResourceAsStream(XSD.XML_SCHEMA)));
          schemas.add(new StreamSource(classLoader.getResourceAsStream(XSD.XLINKS)));
          schemas.add(new StreamSource(classLoader.getResourceAsStream("abc/xml/AppSchema.xsd")));
          SchemaFactory schemaFactory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
          schemaFactory.setResourceResolver(new LSResourceResolverImpl());
          try {
               Schema schema = schemaFactory.newSchema(schemas.toArray(new Source[schemas.size()]));
               Validator validator = schema.newValidator();
               validator.setErrorHandler(new ErrorHandler() {
                    @Override
                    public void error(SAXParseException e) throws SAXException {
                         errorMessage.setErrorMessage(e.getMessage());
                         errorMessage.setLineNumber(e.getLineNumber());
                         errorMessage.setColumnNumber(e.getLineNumber());
                         throw e;
                    @Override
                    public void fatalError(SAXParseException e) throws SAXException {
                         errorMessage.setErrorMessage(e.getMessage());
                         errorMessage.setLineNumber(e.getLineNumber());
                         errorMessage.setColumnNumber(e.getLineNumber());
                         throw e;
                    @Override
                    public void warning(SAXParseException e) throws SAXException {
                         errorMessage.setErrorMessage(e.getMessage());
                         errorMessage.setLineNumber(e.getLineNumber());
                         errorMessage.setColumnNumber(e.getLineNumber());
                         throw e;
               StreamSource source = new StreamSource(new File(filePath));
               validator.validate(source);
          } catch (SAXParseException e) {
               return false;
          } catch (SAXException e) {
               errorMessage.setErrorMessage(e.getMessage());
               return false;
          } catch (FactoryConfigurationError e) {
               errorMessage.setErrorMessage(e.getMessage());
               return false;
          } catch (IOException e) {
               errorMessage.setErrorMessage(e.getMessage());
               return false;
          return true;
     public ErrorMessage getErrorMessage() {
          return errorMessage;
}Edited by: erossy on Aug 31, 2010 1:56 AM

Parsing XML problem

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