Convert excel file to pdf using java, itext and POI API and save settings

Question

I have an Excel file in which there are 5 columns with several merged cells, empty cells, dates and other text information (regular excel file).

I am reading this file using the POI API in java. I can convert the file to a pdf table using iText jar.

But the whole format is not copied to pdf. (for example, merged cells fall into one column, while other formatting or settings all disappeared).

A simple pdf table is created.

How to save the same format as in excel? (I want an exact copy of an Excel pdf sheet)

Here is the code I'm using

     //First we read the Excel file in binary format into FileInputStream
             FileInputStream input_document = new FileInputStream(new File("K:\\DCIN_TER\\DCIN_EPU2\\CIRCUIT FROM BRANCH\\RAINBOW ORDERS\\" + SONo.trim() + "\\" + SONo.trim() + " - Checklist.xls"));

             // Read workbook into HSSFWorkbook
             HSSFWorkbook my_xls_workbook = new HSSFWorkbook(input_document);

             // Read worksheet into HSSFSheet
             HSSFSheet my_worksheet = my_xls_workbook.getSheetAt(0);

             // To iterate over the rows
             Iterator<Row> rowIterator = my_worksheet.iterator();

             //We will create output PDF document objects at this point
             com.itextpdf.text.Document iText_xls_2_pdf = new com.itextpdf.text.Document();

             PdfWriter.getInstance(iText_xls_2_pdf, new FileOutputStream("K:\\DCIN_TER\\DCIN_EPU2\\CIRCUIT FROM BRANCH\\RAINBOW ORDERS\\" + SONo.trim() + "\\" + SONo.trim() + " - Checklist.pdf"));

             iText_xls_2_pdf.open();

             //we have 5 columns in the Excel sheet, so we create a PDF table with 5 columns; Note: There are ways to make this dynamic in nature, if you want to.
             PdfPTable my_table = new PdfPTable(5);

             //We will use the object below to dynamically add new data to the table
             PdfPCell table_cell;

             //Loop through rows.
             while(rowIterator.hasNext())
                    {
                     Row rowi = rowIterator.next();

                     Iterator<Cell> cellIterator = rowi.cellIterator();

                            while(cellIterator.hasNext())
                            {
                                    Cell celli = cellIterator.next(); //Fetch CELL

                                    switch(celli.getCellType())
                                    {
                                            //Identify CELL type you need to add more code here based on your requirement / transformations
                                     case Cell.CELL_TYPE_STRING:

                                            //Push the data from Excel to PDF Cell
                                            table_cell = new PdfPCell(new Phrase(celli.getStringCellValue()));

                                            //move the code below to suit to your needs
                                            my_table.addCell(table_cell);

                                            break;

                                            case Cell.CELL_TYPE_NUMERIC:

                                            //Push the data from Excel to PDF Cell
                                            table_cell = new PdfPCell(new Phrase("" + celli.getNumericCellValue()));

                                            //move the code below to suit to your needs
                                            my_table.addCell(table_cell);

                                            break;
                                    }
                                    //next line
                            }
             }

             //Finally add the table to PDF document
             iText_xls_2_pdf.add(my_table);
             iText_xls_2_pdf.close();

             //we created our pdf file..
             input_document.close(); //close xls  

I added excel file as image

Answer 1

ExcelToHtmlConverter? 3.13 Apache POI. , WordToHtmlConverter. Excel HTML iText HTML PDF. PDF, :

Answer 2

Apache Tika xlsx html- apache pdfbox HTML- pdf.