java - 使用 apache-poi 在 excel 中画一条线

Question

谁能给我写几行代码，展示如何使用 apache poi 在 excel 的单元格中写一行？! 在普通 Excel 中，我会转到插入 - 形状 - 线条。 基本上，编写如下代码:

Workbook wb = new HSSFWorkbook();
Sheet sheet = wb.createSheet();
Row row=sheet.createRow(0);
Cell cell = row.createCell(0);

现在，缺少的代码会放在这里。 当我在网上搜索时，我应该使用类 HSSFSimpleShape 和 OBJECT_TYPE_LINE。 但我不知道如何在我的代码中实现它:(

我想我应该有我想画线的单元格或一些像素作为坐标或其他东西。

帮助! :)

Answer 1

看看这个例子:

Workbook wb = new HSSFWorkbook();
Sheet sheet = wb.createSheet();
HSSFPatriarch patriarch = (HSSFPatriarch) sheet.createDrawingPatriarch();

/* Here is the thing: the line will go from top left in cell (0,0) to down left 
of cell (0,1) */
HSSFClientAnchor anchor = new HSSFClientAnchor(
  0, 0, 0, 255, (short) 0, 0,(short) 1, 0);

HSSFSimpleShape shape = patriarch.createSimpleShape(anchor);
shape.setShapeType(HSSFSimpleShape.OBJECT_TYPE_LINE);
shape.setLineStyleColor(10, 10, 10);
shape.setFillColor(90, 10, 200);
shape.setLineWidth(HSSFShape.LINEWIDTH_ONE_PT);
shape.setLineStyle(HSSFShape.LINESTYLE_SOLID);

// you don't even need the cell, but if you also want to write anything...
Row row = sheet.createRow(0);
Cell cell = row.createCell(0);
cell.setCellValue("Test"); 

我还建议看一下 HSSFClientAnchor Javadoc