Fwd: [jdom-interest] help please GURUS.. !!!
krishna muthyala
muthyalakris at yahoo.com
Mon Jun 4 09:36:10 PDT 2001
Its me again
Just tried something else and got this error
org.jdom.JDOMException: Error on line 1: The root element is required in a well-formed document.
at org.jdom.input.SAXBuilder.build(SAXBuilder.java:407)
at org.jdom.input.SAXBuilder.build(SAXBuilder.java:499)
at com.sone.util.XMLResourceTagParser.parseXml(XMLResourceTagParser.java:89)
at com.sone.util.XMLResourceTagParser.getResourceTag(XMLResourceTagParser.java:64)
at com.sone.servlets.CommandServlet.service(CommandServlet.java:101)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:404)
at org.apache.tomcat.core.Handler.service(Handler.java:286)
at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
at org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:797)
at org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
at org.apache.tomcat.service.connector.Ajp12ConnectionHandler.processConnection(Ajp12ConnectionHandler.java:166)
at org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
at org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:498)
at java.lang.Thread.run(Thread.java:484)
Root cause: org.xml.sax.SAXParseException: The root element is required in a well-formed document.
at org.apache.xerces.framework.XMLParser.reportError(XMLParser.java:1008)
at org.apache.xerces.framework.XMLDocumentScanner.reportFatalXMLError(XMLDocumentScanner.java:625)
at org.apache.xerces.framework.XMLDocumentScanner$XMLDeclDispatcher.endOfInput(XMLDocumentScanner.java:841)
at org.apache.xerces.framework.XMLDocumentScanner.endOfInput(XMLDocumentScanner.java:417)
at org.apache.xerces.validators.common.XMLValidator.sendEndOfInputNotifications(XMLValidator.java:565)
at org.apache.xerces.readers.DefaultEntityHandler.changeReaders(DefaultEntityHandler.java:1026)
at org.apache.xerces.readers.XMLEntityReader.changeReaders(XMLEntityReader.java:168)
at org.apache.xerces.readers.AbstractCharReader.changeReaders(AbstractCharReader.java:150)
at org.apache.xerces.readers.AbstractCharReader.lookingAtChar(AbstractCharReader.java:217)
at org.apache.xerces.framework.XMLDocumentScanner$XMLDeclDispatcher.dispatch(XMLDocumentScanner.java:741)
at org.apache.xerces.framework.XMLDocumentScanner.parseSome(XMLDocumentScanner.java:380)
at org.apache.xerces.framework.XMLParser.parse(XMLParser.java:900)
at org.jdom.input.SAXBuilder.build(SAXBuilder.java:395)
at org.jdom.input.SAXBuilder.build(SAXBuilder.java:499)
at com.sone.util.XMLResourceTagParser.parseXml(XMLResourceTagParser.java:89)
at com.sone.util.XMLResourceTagParser.getResourceTag(XMLResourceTagParser.java:64)
at com.sone.servlets.CommandServlet.service(CommandServlet.java:101)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:404)
at org.apache.tomcat.core.Handler.service(Handler.java:286)
at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
at org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:797)
at org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
at org.apache.tomcat.service.connector.Ajp12ConnectionHandler.processConnection(Ajp12ConnectionHandler.java:166)
at org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
at org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:498)
at java.lang.Thread.run(Thread.java:484)
this is what I did
doc = sax.build(new StringReader(XmlStream));
as suggested in FAQ and by some gurus here... so what changes do I need to make in my createDocument(), to make it a well formed document with a root etc..
Thanks
Krishna
krishna muthyala <muthyalakris at yahoo.com> wrote: From krishna muthyala Mon Jun 4 09:10:34 2001
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From: krishna muthyala
To: jdom-interest at jdom.org
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Subject: [jdom-interest] help please GURUS.. !!!
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Date: Mon, 4 Jun 2001 09:10:34 -0700 (PDT)
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Hi
I request some help, the following is the task
I have an application which spits out xml as a string
something like this
"xml=<?xml version="1.0" encoding="UTF-8"?>
<session>
<!--Session Element -->
<resource>Session</resource>
<useridElement>kris</useridElement>
<passwordElement>kris</passwordElement>
</session>"
the code for writing xml is as follows
public static String createDocument()
{
String xmlString="";
// Create the root element
Element sessionElement = new Element("session");
//create the document
Document myDocument = new Document (sessionElement);
//add a comment
sessionElement.addContent(new Comment("Session Element "));
//add some child elements
/*
* Note that this is the first approach to adding an element and
* textual content. The second approach is commented out.
*/
Element resource = new Element("resource");
resource.addContent("session");
sessionElement.addContent(resource);
//add some more elements
sessionElement.addContent(new Element("useridElement").addContent("kris"));
sessionElement.addContent(new Element("! passwordElement").addContent("kris"));
//print the document
try
{
XMLOutputter outputter = new XMLOutputter(" ", true);
outputter.output(myDocument, System.out);
System.out.println("XMLOUtputter created");
//xmlString=outputter.outputString(myDocument);
}
catch (java.io.IOException e)
{
e.printStackTrace();
}
! ;
//return myDocument;
return xmlString;
}
***************end method *******************
This string is posted to a servlet, which then does a
String value = request.getParameter("xml");
MyParser myparser = new MyParser();
resource = myparser.parseXML(value);
and gets the whole xml string. I want to pass this string to a class that uses the JDOM API and extract the value for resource tag and do some processing.
My question is how is it done? , also is there a better way to set the identifier in the request object from the application for the servlet to get it out of the request object?
I tried something like this in my parsing class
public String parseXml(String XmlStream)
{
String resource="";
Document doc;
try
{
System.out.println("inside parseXML");
SAXBuilder sax = new SAXBuilder();
doc = sax.build(XmlStream);
Element root = doc.getRootElement();
Element r = root.getChild(resource);
String re = r.toString();
resource = re;
}
catch(JDOMException e)
{
e.printStackTrace();
}
catch (Exception e)
{
e.printStackTrace();
System.out.println("parsing exceptio! n");
}
return resource;
}
and this throws the following exception
********** error *******************
org.jdom.JDOMException: Error on line 0: File "" not found.
at org.jdom.input.SAXBuilder.build(SAXBuilder.java:407)
at org.jdom.input.SAXBuilder.build(SAXBuilder.java:533)
at com.sone.util.XMLResourceTagParser.parseXml(XMLResourceTagParser.java:87)
at com.sone.util.XMLResourceTagParser.getResourceTag(XMLResourceTagParser.java:64)
at com.sone.servlets.CommandServlet.service(CommandServlet.java:101)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:404)
at org.apache.tomcat.core.Handler! .service(Handler.java:286)
at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
at org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:797)
at org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
at org.apache.tomcat.service.connector.Ajp12ConnectionHandler.processConnection(Ajp12ConnectionHandler.java:166)
at org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
at org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:498)
at java.lang.Thread.run(Thread.java:484)
Root cause: org.xml.sax.SAXParseException: File "" not found.
&nbs! p; at org.apache.xerces.framework.XMLParser.reportError(XMLParser.java:1014)
at org.apache.xerces.readers.DefaultEntityHandler.startReadingFromDocument(DefaultEntityHandler.java:499)
at org.apache.xerces.framework.XMLParser.parseSomeSetup(XMLParser.java:304)
at org.apache.xerces.framework.XMLParser.parse(XMLParser.java:899)
at org.jdom.input.SAXBuilder.build(SAXBuilder.java:395)
at org.jdom.input.SAXBuilder.build(SAXBuilder.java:533)
at com.sone.util.XMLResourceTagParser.parseXml(XMLResourceTagParser.java:87)
at com.sone.util.XMLResourceTagParser.getResourceTag(XMLResourceTagParser.java:64)
at com.sone.servlet! s.CommandServlet.service(CommandServlet.java:101)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:404)
at org.apache.tomcat.core.Handler.service(Handler.java:286)
at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
at org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:797)
at org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
at org.apache.tomcat.service.connector.Ajp12ConnectionHandler.processConnection(Ajp12ConnectionHandler.java:166)
at org.apache.tomcat.service.T! cpWorkerThread.runIt(PoolTcpEndpoint.java:416)
at org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:498)
at java.lang.Thread.run(Thread.java:484)
******************* end error****************************
can any of the gurus help me overcome this problem, this is very important for me right now...
Thanks
Appreciate your time and response
kris
concern for a cleaner world, for a better tomorrow
http://www.greenpeace.org
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concern for a cleaner world, for a better tomorrow
http://www.greenpeace.org
---------------------------------
Do You Yahoo!?
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