public  void doExport(Writer out) throws IOException, JspException 
{
        if (log.isDebugEnabled())
        {
            log.debug(getClass().getName());
        }
        final String DOCUMENT_START = getDocumentStart();
        final String DOCUMENT_END = getDocumentEnd();
        final String ROW_START = getRowStart();
        final String ROW_END = getRowEnd();
        final String CELL_START = getCellStart();
        final String CELL_END = getCellEnd();
        final boolean ALWAYS_APPEND_CELL_END = getAlwaysAppendCellEnd();
        final boolean ALWAYS_APPEND_ROW_END = getAlwaysAppendRowEnd();
        // document start
        write(out, DOCUMENT_START);
        if (this.header)
        {
            write(out, doHeaders());
        }
        // get the correct iterator (full or partial list according to the exportFull field)
        RowIterator rowIterator = this.model.getRowIterator(this.exportFull);
        // iterator on rows
        while (rowIterator.hasNext())
        {
            Row row = rowIterator.next();
            if (this.model.getTableDecorator() != null)
            {
                String stringStartRow = this.model.getTableDecorator().startRow();
                write(out, stringStartRow);
            }
            // iterator on columns
            ColumnIterator columnIterator = row.getColumnIterator(this.model.getHeaderCellList());
            write(out, ROW_START);
            while (columnIterator.hasNext())
            {
                Column column = columnIterator.nextColumn();
                // Get the value to be displayed for the column
                String value = escapeColumnValue(column.getValue(this.decorated));
                write(out, CELL_START);
                write(out, value);
                if (ALWAYS_APPEND_CELL_END || columnIterator.hasNext())
                {
                    write(out, CELL_END);
                }
            }
            if (ALWAYS_APPEND_ROW_END || rowIterator.hasNext())
            {
                write(out, ROW_END);
            }
        }
        // document end
        write(out, DOCUMENT_END);
}

 protected String doHeaders() 
{
        final String ROW_START = getRowStart();
        final String ROW_END = getRowEnd();
        final String CELL_START = getCellStart();
        final String CELL_END = getCellEnd();
        final boolean ALWAYS_APPEND_CELL_END = getAlwaysAppendCellEnd();
        StringBuffer buffer = new StringBuffer(1000);
        Iterator iterator = this.model.getHeaderCellList().iterator();
        // start row
        if (ROW_START != null)
        {
            buffer.append(ROW_START);
        }
        while (iterator.hasNext())
        {
            HeaderCell headerCell = (HeaderCell) iterator.next();
            String columnHeader = headerCell.getTitle();
            if (columnHeader == null)
            {
                columnHeader = StringUtils.capitalize(headerCell.getBeanPropertyName());
            }
            columnHeader = escapeColumnValue(columnHeader);
            if (CELL_START != null)
            {
                buffer.append(CELL_START);
            }
            if (columnHeader != null)
            {
                buffer.append(columnHeader);
            }
            if (CELL_END != null && (ALWAYS_APPEND_CELL_END || iterator.hasNext()))
            {
                buffer.append(CELL_END);
            }
        }
        // end row
        if (ROW_END != null)
        {
            buffer.append(ROW_END);
        }
        return buffer.toString();
}

Write table header.

 abstract protected String escapeColumnValue(Object value)
can be implemented to escape values for different output.

 abstract protected boolean getAlwaysAppendCellEnd()
always append cell end string?

 abstract protected boolean getAlwaysAppendRowEnd()
always append row end string?

 abstract protected String getCellEnd()
String to add after a cell.

 protected String getCellStart() 
{
        return null;
}

String to add before a cell.

 protected String getDocumentEnd() 
{
        return null;
}

String to add to the end of document.

 protected String getDocumentStart() 
{
        return null;
}

String to add to the top of document.

 protected String getRowEnd() 
{
        return null;
}

String to add after a row.

 protected String getRowStart() 
{
        return null;
}

String to add before a row.

 public boolean outputPage() 
{
        return false;
}

 public  void setParameters(TableModel tableModel,
    boolean exportFullList,
    boolean includeHeader,
    boolean decorateValues) 
{
              
        this.model = tableModel;
        this.exportFull = exportFullList;
        this.header = includeHeader;
        this.decorated = decorateValues;
}