使用java,itext和POI API将excel文件转换为pdf并保留设置

Question

我有一个Excel文件,其中有5列包含很少的合并单元格,空白单元格,日期和其他文本信息(普通的Excel文件).

我正在使用Java中的POI API读取此文件.我可以使用iText jar将文件转换为pdf表.

但是,整个格式不会复制到pdf中.(例如,合并的单元格进入一列,其他格式或设置都消失了).

创建一个简单的pdf表.

我如何保留与excel相同的格式？(我想要PDF格式的excel表格的精确副本)

这是我正在使用的代码

     //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  

我已将excel文件附加为图像

Answer 1

使用 Apache Tika，您可以将 xlsx 文件转换为 html 格式，通过 apache pdfbox 您可以将 html 格式的文本转换为 pdf。