Question

java apache poi 框架向excel中插入对象

在做项目的过程中需要在导出excel前 向excel 中用 poi框架插入图片的一个包装对象，点击可以打开图片，请问怎么实现？

Answer 1

Java 中，调用 Apache 的 POI 操作 Excel，往 Excel 中插入一张图片。
举例如下：
//create a new workbook
Workbook wb = new XSSFWorkbook(); //or new HSSFWorkbook();

//add picture data to this workbook.

// 打开图片
InputStream is = new FileInputStream("image1.jpeg");
byte[] bytes = IOUtils.toByteArray(is);

// 增加图片到 Workbook
int pictureIdx = wb.addPicture(bytes, Workbook.PICTURE_TYPE_JPEG);
is.close();

CreationHelper helper = wb.getCreationHelper();

//create sheet
Sheet sheet = wb.createSheet();

// Create the drawing patriarch. This is the top level container for all shapes.
Drawing drawing = sheet.createDrawingPatriarch();

//add a picture shape
ClientAnchor anchor = helper.createClientAnchor();
//set top-left corner of the picture,
//subsequent call of Picture#resize() will operate relative to it

// 设置图片位置
anchor.setCol1(3);
anchor.setRow1(2);
Picture pict = drawing.createPicture(anchor, pictureIdx);

//auto-size picture relative to its top-left corner
pict.resize();

//save workbook
String file = "picture.xls";
if(wb instanceof XSSFWorkbook) file += "x";

// 输出文件
FileOutputStream fileOut = new FileOutputStream(file);
wb.write(fileOut);
fileOut.close();