Java转excel 表格转图片

将Java生成的Excel表格转换为图片可以使用POI和Apache Batik库。

首先，使用POI库将Excel表格转换为BufferedImage对象，代码示例：

FileInputStream fileInputStream = new FileInputStream("excelFile.xlsx");
Workbook workbook = new XSSFWorkbook(fileInputStream);
Sheet sheet = workbook.getSheetAt(0);

// Convert the sheet to a buffered image
ByteArrayOutputStream baos = new ByteArrayOutputStream();
sheet.getWorkbook().write(baos);
ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
BufferedImage bufferedImage = ImageIO.read(bais);

然后，使用Batik库将BufferedImage对象转换为PNG格式的图片，代码示例：

// Convert the buffered image to PNG format
File outputFile = new File("outputFile.png");
OutputStream outputStream = new FileOutputStream(outputFile);
TranscoderInput transcoderInput = new TranscoderInput(bufferedImage);
TranscoderOutput transcoderOutput = new TranscoderOutput(outputStream);
PNGTranscoder pngTranscoder = new PNGTranscoder();
pngTranscoder.transcode(transcoderInput, transcoderOutput);
outputStream.flush();
outputStream.close();

这样就可以将Java生成的Excel表格转换为PNG格式的图片了。