How to get the "encoding" of a XML file using JDOM

As in XML file, <?xml version="1.0" encoding="UTF-8" ?> indicates the encoding of this file
while using JDOM to parse a XML file, how can I get the encoding type?
thanx!!!

What my program do is to get the encoding of XML files and convert them to UTF-8 encoding files, while I need this "encoding" information of the original XML document thus I can convert...
After reading specifications and JDOM docs, the truth turns to be disappointed, no function is provided to get this information in JDOM level 2(the current released one), while it's promissed that this function will be provided in JDOM level API....
Thanx all for your help and attention!!!

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I am trying to retrieve the above encoding="SJIS", but I can't seem to locate the API for doing so.
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Eric

Hi ddossot,
Thanks for your suggestion.
However, the xerces.jar file that comes with my old tomcat server is an old version and thus, the getEncoding method is not even present in the DocumentImpl class. The option to update to a newer version of tomcat and xerces is not available. What a pity... :-(
Well, I just have to try to find a way around. Worst case scenario, parse the first line in the xml file myself.
Regards,
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then you can use:
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Michelle

* Version : 1.00
* File Purpose : Given the xml file loads into dom and recreate the file with the updated values.
* Developer : Kashif Qasim : 25/july/04
* Modify detail :
import java.lang.*;
import java.io.*;
import java.util.*;
import java.text.*;
import org.w3c.dom.*;
import org.apache.xerces.parsers.DOMParser;
import org.apache.xerces.*;
public class XMLWriter
private String displayStrings[] = new String[5000];
private int numberDisplayLines = 0;
private Document document;
//private final Node c;
public synchronized void displayDocument(String uri,Vector UpdatedValues,String getTaskID)
try {
DOMParser parser = new DOMParser();
parser.parse(uri);
document = parser.getDocument();
display(document, "",UpdatedValues);
} catch (Exception e) {
e.printStackTrace(System.err);
ReadXmlConfig objReadXmlConfig = null;
FileWriter filewriter = null;
try {
filewriter = new FileWriter(uri);
for(int loopIndex = 0; loopIndex < numberDisplayLines; loopIndex++){
filewriter.write(displayStrings[loopIndex].toCharArray());
//System.out.println("displayStrings[loopIndex].toCharArray() "+displayStrings[loopIndex].toString());
//filewriter.write("\n");
filewriter.close();
System.gc();
objReadXmlConfig = new ReadXmlConfig();
objReadXmlConfig.ITSLog("File updated for "+getTaskID+" succesfully, file is closed now ");
} catch (IOException e) {
System.err.println("Caught IOException: " + e.getMessage());
objReadXmlConfig = new ReadXmlConfig();
objReadXmlConfig.ITSErrorLog("File updated FAILED for "+getTaskID+". Reason for file error "+e.toString());
}finally {
if (filewriter != null) {
System.out.println("Closing File");
objReadXmlConfig =null;
try{
filewriter.close();
}catch(IOException e){
System.err.println("Caught IOException: " + e.getMessage());
} else {
System.out.println("File not open");
private void display(Node node, String indent, Vector UpdtRecs)
if (node == null) {
return;
int type = node.getNodeType();
NodeList nodeList = document.getElementsByTagName("QueryParm");
int TotalRecs = UpdtRecs.size();
switch (type) {
case Node.DOCUMENT_NODE: {
displayStrings[numberDisplayLines] = indent;
displayStrings[numberDisplayLines] +=
"<?xml version=\"1.0\" encoding=\""+
"UTF-8" + "\"?>";
numberDisplayLines++;
displayStrings[numberDisplayLines] += "\n";
display(((Document)node).getDocumentElement(), "",UpdtRecs);
break;
case Node.ELEMENT_NODE: {
if(node.getNodeName().equals("QueryParm")) {
for(int i =0 ; i< nodeList.getLength() ; i++)
Node nodeQry = nodeList.item(i);
NamedNodeMap nnp = nodeQry.getAttributes();
for(int j= 0 ; j < nnp.getLength() ; j++)
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if(atr.getName().equalsIgnoreCase("value_"+(i+1)))
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displayStrings[numberDisplayLines] = indent;
displayStrings[numberDisplayLines] += "<";
displayStrings[numberDisplayLines] += node.getNodeName();
int length = (node.getAttributes() != null) ?
node.getAttributes().getLength() : 0;
Attr attributes[] = new Attr[length];
for (int loopIndex = 0; loopIndex < length; loopIndex++) {
attributes[loopIndex] = (Attr)node.getAttributes().item(loopIndex);
for (int loopIndex = 0; loopIndex < attributes.length; loopIndex++) {
Attr attribute = attributes[loopIndex];
displayStrings[numberDisplayLines] += " ";
displayStrings[numberDisplayLines] += attribute.getNodeName();
displayStrings[numberDisplayLines] += "=\"";
displayStrings[numberDisplayLines] += attribute.getNodeValue();
displayStrings[numberDisplayLines] += "\"";
displayStrings[numberDisplayLines]+=">";
numberDisplayLines++;
NodeList childNodes = node.getChildNodes();
if (childNodes != null) {
length = childNodes.getLength();
indent += " ";
for (int loopIndex = 0; loopIndex < length; loopIndex++ ) {
display(childNodes.item(loopIndex), indent,UpdtRecs);
break;
case Node.CDATA_SECTION_NODE: {
displayStrings[numberDisplayLines] = "";
displayStrings[numberDisplayLines] += "<![CDATA[";
displayStrings[numberDisplayLines] += node.getNodeValue();
displayStrings[numberDisplayLines] += "]]>";
numberDisplayLines++;
break;
case Node.TEXT_NODE: {
displayStrings[numberDisplayLines] = "";
String newText = node.getNodeValue().trim();
if(newText.indexOf("\n") < 0 && newText.length() > 0) {
displayStrings[numberDisplayLines] += newText;
displayStrings[numberDisplayLines] += "\n";
numberDisplayLines++;
break;
case Node.PROCESSING_INSTRUCTION_NODE: {
displayStrings[numberDisplayLines] = "";
displayStrings[numberDisplayLines] += "<?";
displayStrings[numberDisplayLines] += node.getNodeName();
String text = node.getNodeValue();
if (text != null && text.length() > 0) {
displayStrings[numberDisplayLines] += text;
displayStrings[numberDisplayLines] += "?>";
displayStrings[numberDisplayLines] += "\n";
numberDisplayLines++;
break;
if (type == Node.ELEMENT_NODE) {
displayStrings[numberDisplayLines] = indent.substring(0,
indent.length() - 4);
displayStrings[numberDisplayLines] += "</";
displayStrings[numberDisplayLines] += node.getNodeName();
displayStrings[numberDisplayLines] += ">";
displayStrings[numberDisplayLines] += "\n";
numberDisplayLines++;
indent += " ";
public static void main(String args[])
Vector xmlValue = new Vector();
xmlValue.add(0,"Kashif");
xmlValue.add(1,"Qasim");
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<?xml version="1.0" encoding="UTF-8"?>
<Mediation>
<Task1>
<Source>
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<SourceConnection>jdbc:microsoft:sqlserver://10.2.1.58:1433;DatabaseName=MTCVB_HDS;</SourceConnection>
<SourceUser>sa</SourceUser>
<SourcePassword>sa</SourcePassword>
<Table>
<SourceTable>t_Agent</SourceTable>
<SourceQuery><![CDATA[SELECT SkillTargetID,PersonID,PeripheralID,EnterpriseName,PeripheralNumber,Deleted,TemporaryAgent,AgentStateTrace,ChangeStamp FROM t_Agent where SkillTargetID > {value_1} order by SkillTargetID]]>
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</SourceParm>
<SourceParm BusinessRule="" ColumnName="ENTERPRISENAME" ColumnNumber="4" DataType="String" DefaultValue="" Format="">
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<SourceParm BusinessRule="" ColumnName="PERIPHERALNUMBER" ColumnNumber="5" DataType="String" DefaultValue="" Format="">
</SourceParm>
<SourceParm BusinessRule="" ColumnName="DELETED" ColumnNumber="6" DataType="String" DefaultValue="" Format="">
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<SourceParm BusinessRule="" ColumnName="TEMPORARYAGENT" ColumnNumber="7" DataType="String" DefaultValue="" Format="">
</SourceParm>
<SourceParm BusinessRule="" ColumnName="AGENTSTATETRACE" ColumnNumber="8" DataType="String" DefaultValue="" Format="">
</SourceParm>
<SourceParm BusinessRule="" ColumnName="CHANGESTAMP" ColumnNumber="9" DataType="String" DefaultValue="" Format="">
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<QueryParm FldName_1="SkillTargetID" FldType_1="Number" value_1="0">
</QueryParm>
</Table>
</Source>
</Task1>
</Mediation>
The QueryParm values are updated thru this code :)
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