To Convert table/ListObject to image
Get ListObject
ListObject listObject = worksheet.getListObjects().get(0);
Now create a new workbook with having only this listObject.
public static Workbook createWorkBook(final Worksheet worksheet, final ListObject listObject) throws Exception {
Workbook workbook = new Workbook();
Cells cells = workbook.getWorksheets().get(0).getCells();
Cells cellsTobeCopied = worksheet.getCells();
int totalNoOfRows = listObject.getEndRow() - listObject.getStartRow() + 1;
int totalNoOfColumns = listObject.getEndColumn() - listObject.getStartColumn() + 1;
cells.setStandardHeight(cellsTobeCopied.getStandardHeight());
cells.setStandardWidth(cellsTobeCopied.getStandardWidth());
// Set height of each row as the height of actual rows of table
for (int row = 0; row < totalNoOfRows; row++) {
cells.setRowHeight(row, cellsTobeCopied.getRowHeight(row));
}
// Set width of each column as the width of actual columns of table
for (int column = 0; column < totalNoOfColumns; column++) {
cells.setColumnWidth(column, cellsTobeCopied.getColumnWidth(column));
}
// Copy data of table from worksheet to newly created workbook cells
for (int row = 0; row < totalNoOfRows; row++) {
for (int column = 0; column < totalNoOfColumns; column++) {
Cell copiedFrom = worksheet.getCells().get(listObject.getStartRow() + row, listObject.getStartColumn() + column);
Cell copyTo = cells.get(row, column);
copyTo.setHtmlString(copiedFrom.getHtmlString());
}
}
// Create table in newly created workbook
ListObjectCollection tables = workbook.getWorksheets().get(0).getListObjects();
tables.add(0, 0, totalNoOfRows - 1, totalNoOfColumns - 1, listObject.getShowHeaderRow());
return workbook;
}
- Then convert this workbook as image with image option as property 'setOnlyArea' as true
public static void toImage(final Workbook workbook, final String outputFilePath) throws Exception {
ImageOrPrintOptions imgOptions = new ImageOrPrintOptions();
imgOptions.setImageFormat(ImageFormat.getPng());
imgOptions.setOnlyArea(true);
Worksheet sheet = workbook.getWorksheets().get(0);
SheetRender sr = new SheetRender(sheet, imgOptions);
for (int j = 0; j < sr.getPageCount(); j++) {
sr.toImage(j, outputFilePath);
}
}
Workbook is the newly created workbook only having tha listObject and output file path is the absolute path where to save the output image.
Link: http://iandjava.blogspot.com/2013/07/convert-excel-document-to-images.html with this link you can convert excel and its components to images.