Apache POI Excel 图像
在 Apache POI 中,图像是绘图支持的一部分。要添加图像,只需在绘图族长上调用 createPicture() 即可。Apache POI 支持以下图像类型:
- PNG
- JPG
- DIB
应该注意的是,一旦我们将新图像添加到工作表中,任何现有的绘图都可能会被删除。让我们看一个例子。
Apache POI Excel 图像示例
package com.yiidian;
import org.apache.poi.hssf.usermodel.HSSFClientAnchor;
import org.apache.poi.hssf.usermodel.HSSFPatriarch;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.*;
public class OutlineExample {
public static void main(String[] args) {
FileOutputStream fileOut = null;
BufferedImage bufferImg = null;
//先把读进来的图片放到一个ByteArrayOutputStream中,以便产生ByteArray
try {
ByteArrayOutputStream byteArrayOut = new ByteArrayOutputStream();
bufferImg = ImageIO.read(new File("d:/logo.png"));
ImageIO.write(bufferImg, "png", byteArrayOut);
HSSFWorkbook wb = new HSSFWorkbook();
HSSFSheet sheet1 = wb.createSheet("测试生成图片");
//画图的顶级管理器,一个sheet只能获取一个(一定要注意这点)
HSSFPatriarch patriarch = sheet1.createDrawingPatriarch();
//anchor主要用于设置图片的属性
HSSFClientAnchor anchor = new HSSFClientAnchor(0, 0, 255, 255, (short) 1, 1, (short) 5, 8);
anchor.setAnchorType(3);
//插入图片
patriarch.createPicture(anchor, wb.addPicture(byteArrayOut.toByteArray(), HSSFWorkbook.PICTURE_TYPE_JPEG));
fileOut = new FileOutputStream("yiidian.xls");
// 写入excel文件
wb.write(fileOut);
} catch (Exception e) {
e.printStackTrace();
} finally {
if (fileOut != null) {
try {
fileOut.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}
输出结果为:
热门文章
优秀文章