Java实现Excel转化为图片的代码详解

// 创建workbook
Workbook workbook = new Workbook();
IWorksheet worksheet = workbook.getWorksheets().get(0);

// 添加数据
worksheet.getRange("A1").setValue("Sales Report");
worksheet.getRange("A1").getFont().setColor(Color.FromArgb(56, 93, 171));
worksheet.getRange("A1").getFont().setSize(24);
worksheet.getRange("A1").getFont().setBold(true);
worksheet.getRange("A3:E7")
    .setValue(new Object[][] { { "Date", "Product", "Customer", "Amount", "Show" },
        { "1/1/2021", "Bose 785593-0050", "Fabrikam, Inc.", "$1,886.00", "1" },
        { "1/3/2021", "Canon EOS 1500D", "Alpine Ski House", "$4,022.00", "" },
        { "1/4/2021", "Haier 394L 4Star", "Coho Winery", "$8,144.00", "" },
        { "1/7/2021", "IFB 6.5 Kg FullyAuto", "Southridge Video", "$8,002.00", "1" } });
// 初始化 ImageSaveOptions 并且配置属性
ImageSaveOptions options = new ImageSaveOptions();
options.setScaleX(3.0);
options.setScaleY(2.0);
options.setShowRowHeadings(true);
options.setShowColumnHeadings(false);
options.setShowDrawingObjects(true);
options.setBackgroundColor(Color.FromArgb(226, 231, 243));
options.setShowGridlines(true);
options.setGridlineColor(Color.FromArgb(145, 167, 214));

// 直接把工作表保存为图片
worksheet.toImage("WorksheetToImage.png");

// 通过ImageSaveOptions把工作表保存为图片
worksheet.toImage("WorksheetToImage_UsingImageSaveOptions.png", options);

// 创建workbook
Workbook workbook = new Workbook();
IWorksheet worksheet = workbook.getWorksheets().get(0);

// 添加数据
worksheet.getRange("D10:F10").setValue(new String[] { "Device", "Quantity", "Unit Price" });
worksheet.getRange("D11:F14").setValue(new Object[][] { { "T540p", 12, 9850 }, { "T570", 5, 7460 },
    { "Y460", 6, 5400 }, { "Y460F", 8, 6240 } });

IRange range = worksheet.getRange("D10:F14");

// 初始化 ImageSaveOptions 并且配置属性
ImageSaveOptions options = new ImageSaveOptions();
options.setScaleX(3.0);
options.setScaleY(2.0);
options.setShowRowHeadings(true);
options.setShowColumnHeadings(false);
options.setShowDrawingObjects(true);
options.setBackgroundColor(Color.FromArgb(226, 231, 243));
options.setShowGridlines(true);
options.setGridlineColor(Color.FromArgb(145, 167, 214));

// 直接把区域保存为图片
range.toImage("RangeToImage.png");

// 通过 ImageSaveOptions 保存区域为图片
range.toImage("RangeToImage_UsingImageSaveOptions.png", options);

// 创建workbook
Workbook workbook = new Workbook();
IWorksheet worksheet = workbook.getWorksheets().get(0);

// 添加一个椭圆形状
IShape shape = worksheet.getShapes().addShape(AutoShapeType.Oval, 20, 20, 200, 100);

// 初始化 ImageSaveOptions 并且配置属性
ImageSaveOptions options = new ImageSaveOptions();
options.setScaleX(3.0);
options.setScaleY(2.0);
options.setBackgroundColor(Color.GetLimeGreen());

// 直接保存为形状
shape.toImage("ShapeToImage.png");

// 通过 ImageSaveOptions 来保存图片
shape.toImage("ShapeToImage_UsingImageSaveOptions.png", options);

// 创建workbook
Workbook workbook = new Workbook();
IWorksheet worksheet = workbook.getWorksheets().get(0);

// 准备图表的数据
worksheet.getRange("A1:D4")
    .setValue(new Object[][] { { null, "Q1", "Q2", "Q3" }, { "Mobile Phones", 1330, 2345, 3493 },
        { "Laptops", 2032, 3632, 2197 }, { "Tablets", 6233, 3270, 2030 } });

worksheet.getRange("A:D").getColumns().autoFit();

// 增加面积图
IShape shape = worksheet.getShapes().addChart(ChartType.Area, 250, 20, 360, 230);

// 给SeriesCollection添加系列
shape.getChart().getSeriesCollection().add(worksheet.getRange("A1:D4"), RowCol.Columns, true, true);

// 设置图表标题
shape.getChart().getChartTitle().getTextFrame().getTextRange().getParagraphs().add("Annual Sales Record");

// 保存为图片
shape.toImage("ConvertChartToImage.png");