Aspose单元格Java，如何从table / ListObject创建图像

Question

如何将表/ ListObject转换为和图像？

在excel文件中，我有表格，图表和图像，并且正在使用aspose单元格java。 我的要求是将所有这些详细信息作为独立的图像获取，并且有用于将图表和形状转换为图像的api，但是对于表/ ListObject没有api。 所以有人知道如何使用aspose调用java liberary将表转换为图像吗？

Answer 1

将表/ ListObject转换为图像

1. 获取ListObject

   ListObject listObject = worksheet.getListObjects（）。get（0）;

2. 现在，仅使用此listObject创建一个新的工作簿。

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;
}

1. 然后将此工作簿转换为图像，并将图像选项的属性“ setOnlyArea”设置为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);
    }
}

工作簿是仅具有listObject的新创建的工作簿，输出文件路径是保存输出图像的绝对路径。

链接： http : //iandjava.blogspot.com/2013/07/convert-excel-document-to-images.html使用此链接，您可以将excel及其组件转换为图像。