1

如何将 table/ListObject 转换为图像？

在 excel 文件中，我有表格、图表和图像，我正在使用 aspose 单元格 java。我的要求是将所有这些细节作为独立图像获取，并且有 api 可以将图表和形状转换为图像，但没有用于表/ListObject 的 api。那么任何人都可以知道如何使用 aspose 调用 java 库将表格转换为图像

4

1 回答 1

2

将表/列表对象转换为图像

  1. 获取列表对象

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

  2. 现在创建一个只有这个 listObject 的新工作簿。


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，图像选项为属性“setOnlyArea”为真


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);
    }
}

工作簿是新创建的工作簿，只有 listObject 和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 通过此链接，您可以将 excel 及其组件转换为图像。

于 2013-06-26T12:59:55.970 回答