Exporting the datas from jsp to excel spreadsheet

Question

Hi:
I would like to know how to publish the datas from a jsp page to an excel spreadsheet . Is there ay software I've to use or an API.
and how to use it.
Would appreciate the replies.
Thanks.

Answer 1

OK. Lets say you query a DB and get back a results set with 2 rows from a DB table where each row has 4 columns (all columns are string types). Here is some code that should give you the idea, note I didn't compile it so you'll have to work out the bugs.
Example data:
col1      col2       col3       col4
a1           a2          a3          a4
b1            b2          b3          b4
    public void printFile(ResultSet rs, File file) throws Exception {
        FileWriter fout = null;
        int index;
        final String DELIM = "\t";  // tab delimiter, use the character you prefer
        final String NL =  System.getProperty("line.separator", "\n")
        try {
            fout = new FileWriter(file);
            while (rs.next()) {
                  index = 1;
                  fout.write(rs.getString(index++) + DELIM + rs.getString(index++) + DELIM
                                   rs.getString(index++) + DELIM +rs.getString(index++) + NL);
        } catch(Exception e) {
            e.printStackTrace();
            throw e;
        } finally {
            try { fout.close(); } catch (Exception e) {} // do nothing