easyexcel导出图片格式
时间: 2023-11-16 16:01:36 浏览: 120
EasyExcel是一个基于Java的简单、省内存的读写Excel的开源项目,它支持导出图片格式。在EasyExcel中,可以通过实现WriteHandler接口来自定义图片导出的格式。具体步骤如下:
1. 实现WriteHandler接口,并重写其中的方法;
2. 在重写的方法中,通过ImageUtils类将图片转换为byte数组;
3. 将byte数组写入Excel中。
下面是一个示例代码,演示了如何将图片导出为PNG格式:
```java
public class ImageWriteHandler implements WriteHandler {
private static final String PNG_SUFFIX = ".png";
@Override
public void sheet(int sheetNo, Sheet sheet) {
}
@Override
public void row(int rowNum, Row row) {
}
@Override
public void cell(int cellNum, Cell cell) {
if (cell.getCellType() == CellType.STRING) {
String cellValue = cell.getStringCellValue();
if (cellValue.startsWith("image:")) {
String imagePath = cellValue.substring("image:".length());
try {
ByteArrayOutputStream byteArrayOut = new ByteArrayOutputStream();
BufferedImage bufferImg = ImageIO.read(new File(imagePath));
ImageIO.write(bufferImg, "png", byteArrayOut);
Drawing<?> drawing = cell.getSheet().createDrawingPatriarch();
ClientAnchor anchor = new XSSFClientAnchor(0, 0, 0, 0, cellNum, cell.getRowIndex(), cellNum + 1, cell.getRowIndex() + 1);
drawing.createPicture(anchor, cell.getSheet().getWorkbook().addPicture(byteArrayOut.toByteArray(), Workbook.PICTURE_TYPE_PNG));
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
@Override
public void end() {
}
}
```
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