File Upload and Reading from Ex cel

Hi ALL,
In my jsp page I have the file form field (input type=file) by which i browse for a excel file in local system and when i select the file and clicks on the submit button.
The excel file should be uploaded to server and at the same time the contents of the excel file should be read and inserted into the database.
Can any one help me in this regard
My html looks like this
<tr>
<td>Select File</td>
<td><input type="file" name="file">
</td>
</tr>
<tr>
<td colspan="2"><div align="center">
<input type="submit" name="Submit" value="Submit">
</div></td>
</tr>
Thanks in advance
Ravi

you actually have several problems here.... the first is getting the file to the servlet/jsp. look into the IFleUpload component from apache. http://jakarta.apache.org they have an File uploading system that works really well. After that, you have to "understand" the spreadsheet. If the user(s) have sent it up as a CSV or some other type of simple file, cool, otherwise you are going to have to either write or find a library to parse and interpret excel's file format. I realize I only gave a hint of answer to the first part of your question, but it should at least point you in the write direction.
Ona side note - do they HAVE to upload an excel file? is there any way you can convince them to first save the excel file as a CSV or better, a tab delimited file? this would make your parsing job trivial. :)

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    public void actionPerformed(java.awt.event.ActionEvent evt) {
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    unitsInStockField.setEditable(false);
    unitPriceLbl.setText("Unit Price $");
    unitPriceField.setEditable(false);
    invenValueLbl.setText("Inventory Value $");
    invenValueField.setEditable(false);
    restockingFeeLbl.setText("5% Restocking Fee $");
    restockingFeeField.setEditable(false);
    javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
    jPanel1.setLayout(jPanel1Layout);
    jPanel1Layout.setHorizontalGroup(
    jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
    .addGroup(jPanel1Layout.createSequentialGroup()
    .addContainerGap()
    .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
    .addComponent(unitPriceLbl)
    .addComponent(unitsInStockLbl)
    .addComponent(colorLbl)
    .addComponent(prodNameLbl)
    .addComponent(IDNumberLbl)
    .addComponent(restockingFeeLbl)
    .addComponent(invenValueLbl))
    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
    .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
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    .addComponent(unitsInStockField, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, 176, Short.MAX_VALUE)
    .addComponent(unitPriceField, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, 176, Short.MAX_VALUE)
    .addComponent(restockingFeeField, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, 176, Short.MAX_VALUE)
    .addComponent(invenValueField, javax.swing.GroupLayout.DEFAULT_SIZE, 176, Short.MAX_VALUE))
    .addContainerGap())
    jPanel1Layout.setVerticalGroup(
    jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
    .addGroup(jPanel1Layout.createSequentialGroup()
    .addContainerGap()
    .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
    .addComponent(IDNumberLbl)
    .addComponent(IDNumberField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
    .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
    .addComponent(prodNameLbl)
    .addComponent(prodNameField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
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    .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
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    .addComponent(colorLbl))
    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
    .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
    .addComponent(unitsInStockField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
    .addComponent(unitsInStockLbl))
    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
    .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
    .addComponent(unitPriceField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
    .addComponent(unitPriceLbl))
    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
    .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
    .addComponent(restockingFeeField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
    .addComponent(restockingFeeLbl))
    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 10, Short.MAX_VALUE)
    .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
    .addComponent(invenValueField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
    .addComponent(invenValueLbl))
    .addContainerGap())
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    jbtFirst.addActionListener(new java.awt.event.ActionListener() {
    public void actionPerformed(java.awt.event.ActionEvent evt) {
    jbtFirstActionPerformed(evt);
    jbtNext.setText("Next");
    jbtNext.addActionListener(new java.awt.event.ActionListener() {
    public void actionPerformed(java.awt.event.ActionEvent evt) {
    jbtNextActionPerformed(evt);
    jbtPrevious.setText("Previous");
    jbtPrevious.addActionListener(new java.awt.event.ActionListener() {
    public void actionPerformed(java.awt.event.ActionEvent evt) {
    jbtPreviousActionPerformed(evt);
    jbtLast.setText("Last");
    jbtLast.addActionListener(new java.awt.event.ActionListener() {
    public void actionPerformed(java.awt.event.ActionEvent evt) {
    jbtLastActionPerformed(evt);
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    jbtAdd.addActionListener(new java.awt.event.ActionListener() {
    public void actionPerformed(java.awt.event.ActionEvent evt) {
    jbtAddActionPerformed(evt);
    jbtDelete.setText("Delete");
    jbtModify.setText("Modify");
    jbtModify.addActionListener(new java.awt.event.ActionListener() {
    public void actionPerformed(java.awt.event.ActionEvent evt) {
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    public void actionPerformed(java.awt.event.ActionEvent evt) {
    jbtSaveActionPerformed(evt);
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    searchResults.setFont(new java.awt.Font("Tahoma", 1, 12));
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    jPanel2.setLayout(jPanel2Layout);
    jPanel2Layout.setHorizontalGroup(
    jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
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    .addContainerGap()
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    .addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
    .addGroup(jPanel2Layout.createSequentialGroup()
    .addGap(259, 259, 259)
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    .addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
    .addComponent(jbtSearch, javax.swing.GroupLayout.PREFERRED_SIZE, 83, javax.swing.GroupLayout.PREFERRED_SIZE)
    .addComponent(searchIDNumbField, javax.swing.GroupLayout.PREFERRED_SIZE, 143, javax.swing.GroupLayout.PREFERRED_SIZE)))
    .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
    jPanel2Layout.setVerticalGroup(
    jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
    .addGroup(jPanel2Layout.createSequentialGroup()
    .addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
    .addComponent(searchIDNumLbl)
    .addComponent(searchIDNumbField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
    .addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
    .addGroup(jPanel2Layout.createSequentialGroup()
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    .addGroup(jPanel2Layout.createSequentialGroup()
    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
    .addComponent(jbtSearch)))
    .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
    jbtExit.setText("Save and Exit");
    jbtExit.addActionListener(new java.awt.event.ActionListener() {
    public void actionPerformed(java.awt.event.ActionEvent evt) {
    jbtExitActionPerformed(evt);
    jbtExitwoSave.setText("Exit");
    jbtExitwoSave.addActionListener(new java.awt.event.ActionListener() {
    public void actionPerformed(java.awt.event.ActionEvent evt) {
    jbtExitwoSaveActionPerformed(evt);
    javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
    getContentPane().setLayout(layout);
    layout.setHorizontalGroup(
    layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
    .addGroup(layout.createSequentialGroup()
    .addContainerGap()
    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
    .addGroup(layout.createSequentialGroup()
    .addComponent(jPanel2, javax.swing.GroupLayout.PREFERRED_SIZE, 248, javax.swing.GroupLayout.PREFERRED_SIZE)
    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 44, Short.MAX_VALUE)
    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
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    .addComponent(jbtExit)))
    .addGroup(layout.createSequentialGroup()
    .addComponent(jbtFirst)
    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
    .addComponent(jbtNext)
    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
    .addComponent(jbtPrevious)
    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
    .addComponent(jbtLast))
    .addGroup(layout.createSequentialGroup()
    .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
    .addGap(12, 12, 12)
    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
    .addComponent(jbtAdd)
    .addComponent(jbtDelete)
    .addComponent(jbtModify)
    .addComponent(jbtSave))))
    .addContainerGap())
    layout.linkSize(javax.swing.SwingConstants.HORIZONTAL, new java.awt.Component[] {jbtFirst, jbtLast, jbtNext, jbtPrevious});
    layout.linkSize(javax.swing.SwingConstants.HORIZONTAL, new java.awt.Component[] {jbtAdd, jbtDelete, jbtModify, jbtSave});
    layout.setVerticalGroup(
    layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
    .addGroup(layout.createSequentialGroup()
    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
    .addGroup(layout.createSequentialGroup()
    .addGap(21, 21, 21)
    .addComponent(jbtAdd)
    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
    .addComponent(jbtDelete)
    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
    .addComponent(jbtModify)
    .addGap(39, 39, 39)
    .addComponent(jbtSave))
    .addGroup(layout.createSequentialGroup()
    .addContainerGap()
    .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
    .addComponent(jbtFirst)
    .addComponent(jbtNext)
    .addComponent(jbtPrevious)
    .addComponent(jbtLast))
    .addGap(15, 15, 15)
    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
    .addComponent(jPanel2, javax.swing.GroupLayout.PREFERRED_SIZE, 80, javax.swing.GroupLayout.PREFERRED_SIZE)
    .addGroup(layout.createSequentialGroup()
    .addComponent(jbtExit)
    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
    .addComponent(jbtExitwoSave)))
    .addContainerGap())
    pack();
    }// </editor-fold>
    private void jbtExitwoSaveActionPerformed(java.awt.event.ActionEvent evt) {                                             
    System.exit(0);
    private void jbtSaveActionPerformed(java.awt.event.ActionEvent evt) {                                       
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    double unitsInStockMod, unitPriceMod;
    int idNumMod;
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    prodNameMod = prodNameField.getText();
    unitsInStockMod = Double.parseDouble(unitsInStockField.getText());
    unitPriceMod = Double.parseDouble(unitPriceField.getText());
    colorMod = colorField.getText();
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    out.writeUTF(i.getProdName());
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    System.exit(0);
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    private static DataOutputStream openOutputStream(String name) {
    DataOutputStream out = null;
    try {
    File file = new File(name);
    out =
    new DataOutputStream(
    new BufferedOutputStream(
    new FileOutputStream(file)));
    } catch (IOException e) {
    JOptionPane.showMessageDialog(null, "I/O Error", "", JOptionPane.ERROR_MESSAGE);
    System.exit(0);
    return out;
    } // end openOutputStream()
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    try {
    out.close();
    } catch (IOException e) {
    JOptionPane.showMessageDialog(null, "I/O Exception closing file",
    "", JOptionPane.ERROR_MESSAGE);
    System.exit(0);
    } // end closeFile()
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    DataInputStream in = null;
    try {
    File file = new File(name);
    in = new DataInputStream(
    new BufferedInputStream(
    new FileInputStream(file)));
    } catch (FileNotFoundException e) {
    JOptionPane.showMessageDialog(null, "The file doesn't exist",
    "", JOptionPane.ERROR_MESSAGE);
    System.exit(0);
    } catch (IOException e) {
    JOptionPane.showMessageDialog(null, "I/O Error creating file",
    "", JOptionPane.ERROR_MESSAGE);
    System.exit(0);
    return in;
    private static void closeInputFile(DataInputStream in) {
    try {
    in.close();
    } catch (IOException e) {
    JOptionPane.showMessageDialog(null, "I/O Exception closing file",
    "", JOptionPane.ERROR_MESSAGE);
    System.exit(0);
    } // end closeInputFile()
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    // after each product's inventory is added to it
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    for (int index = 0; index < inventory.length; index++) {
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    currentProductIndex = inventory.length-1; // move to the last product
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    if (currentProductIndex != 0) // it's not the first product displayed
    currentProductIndex -- ; // move to the previous product (decrement the current index)
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    currentProductIndex = inventory.length-1; // move to the last product
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    if (currentProductIndex != inventory.length-1) // it's not the last product displayed
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    prodNameField.setFocusable(true);
    unitsInStockField.setEditable(true);
    unitPriceField.setEditable(true);
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    IDNumberField.setEditable(true);
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    unitPriceField.setText("");
    unitPriceField.setEditable(true);
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    <a href="http://help.sap.com/saphelp_nw04/helpdata/en/5a/90ff4cd0c8cd48a69b836e5e550880/frameset.htm">http://help.sap.com/saphelp_nw04/helpdata/en/5a/90ff4cd0c8cd48a69b836e5e550880/frameset.htm</a>
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