Accessing the xml content

Question

can any one help me to access the xml contents using a servlet or a java code.
eg: there are some tags in xml and i want to access those contents from those tags and display it..
if u can please mail me to:
[email protected]

Answer 1

Hi Suresh
I need the same one for my requirement if u have please post to this site or send me an email .
[email protected]
I can able to parsed one structured XML file using SAX
Sample code :
// ===========================================================
     // SAX DocumentHandler methods
     // ===========================================================
     public void startDocument() throws SAXException {
          logger.info("Start of document");
     public void endDocument() throws SAXException {
          logger.info("End of document");
     public void startElement(String namespaceURI, String localName, // local
               // name
               String qualName, // qualified name
               Attributes attrs) throws SAXException {
          elemName = new String(localName); // element name
          if (elemName.equals(""))
               elemName = new String(qualName); // namespaceAware = false
          tagPosition = TAG_START;
          // Set the string for accumulating the text in a tag to empty
          elemChars = "";
          // If the element name is "row", create a new row instance
          // If the element is "indexxid", "ModelPrice", or "ModelSpread",
          // the value will be read in the method "characters" and stored.
          if (elemName.equals("row")) {
               row = new IndexRow();
               numRows++;
          // logger.info("Number of numRow:"+numRows);
     } // end method startElement
     public void endElement(String namespaceURI, String simpleName, // simple
               // name
               String qualName // qualified name
     ) throws SAXException {
          elemName = new String(simpleName);
          if (elemName.equals(""))
               elemName = new String(qualName); // namespaceAware = false
          tagPosition = TAG_END;
          String indexId = new String();
          Double dblVal = new Double(0);
          // If element name is "row", put the current row in the map for row
          // instances
          if (elemName.equals("row")) {
               if (numRows <= 5) { logger.info("Row is: " + row.toString()); }
               //ABX
               //indexRows.put(row.getIndexxId(), row);
               if (family.equals("ABX.HE")){
               indexRows.put(row.getIndexREDId(), row);
               else {
                    //CDX ITRXX
                         indexRows.put(row.getIndexxId(), row);
          } else if (elemName.equals("IndexID")) {
               row.setIndexxId(elemChars);
          else if (elemName.equals("ModelPrice")) {
               // Leave double value at default of zero if there are no chars
               if (elemChars.trim().length() != 0) {
                    dblVal = new Double(elemChars);
                    row.setModelPrice(dblVal);
                    indexId = row.getIndexxId();
          } else if (elemName.equals("ModelSpread")) {
               // Leave double value at default of zero if there are no chars
               if (elemChars.trim().length() != 0) {
                    dblVal = new Double(elemChars);
                    row.setModelSpread(dblVal);
                    indexId = row.getIndexxId();
          } else if (elemName.equals("CompositePrice")) {
               // Leave double value at default of zero if there are no chars
               if (elemChars.trim().length() != 0) {
                    dblVal = new Double(elemChars);
                    row.setCompositePrice(dblVal);
                    indexId = row.getIndexxId();
          } else if (elemName.equals("CompositeSpread")) {
               // Leave double value at default of zero if there are no chars
               if (elemChars.trim().length() != 0) {
                    dblVal = new Double(elemChars);
                    row.setCompositeSpread(dblVal);
                    indexId = row.getIndexxId();
          } else if (elemName.equals("REDCode")) {
               row.setRedCode(elemChars);
          else if (elemName.equals("Name")) {
               row.setRowName(elemChars);
          } else if (elemName.equals("Series")) {
               row.setSeries(elemChars);
          } else if (elemName.equals("Version")) {
               row.setVersion(elemChars);
          } else if (elemName.equals("Term")) {
               row.setTerm(elemChars);
          } else if (elemName.equals("Maturity")) {
               row.setMaturity(elemChars);
          } else if (elemName.equals("OnTheRun")) {
               row.setOnTheRun(elemChars);
          } else if (elemName.equals("Date")) {
               row.setRowDate(elemChars);
          } else if (elemName.equals("Depth")) {
               row.setDepth(elemChars);
          else if (elemName.equals("Heat")) {
               // logger.info("Chars for element " + elemName + " are '" +
               // elemChars + "'");
               // Leave double value at default of zero if there are no chars
               if (elemChars.trim().length() != 0) {
                    dblVal = new Double(elemChars);
                    row.setHeat(dblVal);
                    indexId = row.getIndexxId();
//          ABX.HE
          else if (elemName.equals("IndexREDId")){
               row.setIndexREDId(elemChars);
          else if (elemName.equals("Coupon")){
               row.setCoupon(elemChars);
          if (elemName.equals("Ontherun")) {
               row.setOnTheRun(elemChars);
     } // end method endElement
     public void characters(char buf[], int offset, int len) throws SAXException {
          // If at end of element, there will be no characters
          if (tagPosition == TAG_END) {
               return;
          // The characteres method may be called more than once
          // for an element if the internal buffer fills up.
          // Append the characters until the end of the element.
          String strVal = new String(buf, offset, len);
          elemChars = elemChars + strVal;
     } // end method characters
} // end class MarkItIndexLoader
but the problem is i want to parse any XML file means any Elemets would be change any time using SAX .In the above example
else if (elemName.equals("Heat")) {
else if (elemName.equals("IndexREDId")){
} else if (elemName.equals("Maturity")) {
like above I am doing hard code so i don't want hard coding the elements names I want to read any element name and value dynamically.
Dynamically i want to read the root and child elements
EX: I can give any XML file like
Student.XML: <root>..</StName>..</StAge>...</root>
Employee.XML: <root>..</EmpName>..</EmpAge>...</root>
CdCatalog.XML: <root>..</Cdtitle>...</CdNumber>...</root>
I need one java program can ready any type of XML file elements and send to the Database table.
Please any one done like this task please suggest some reference links or books or sample snippet which can help me to develop program in my requirement.