thumbnailator 压缩图片

由于上篇poi-tl导出word中携带大量图片, 导致导出word文档过大,考虑压缩图片,故记录

poi-tl导出word, 含表格单元格合并,表格单元格多图合并_xwpftemplate 表格_小菜鸡℡的博客-CSDN博客

1.导包

<dependency><groupId>net.coobird</groupId><artifactId>thumbnailator</artifactId><version>0.4.17</version>
</dependency>

2. 代码

java图片流

//压缩图片
BufferedImage bufferedImage = Thumbnails.of(new FileInputStream(picture)).outputQuality(0.5f)//原图片质量的1/2.scale(0.25f)//压缩为员图的1/4.asBufferedImage();

扩展:  BufferedImage转换InputStream

 BufferedImage bufferedImage = (BufferedImage) dicom.getImage();
            ByteArrayOutputStream os = new ByteArrayOutputStream();
            ImageIO.write(bufferedImage , "jpg", os);
            inputStream = new ByteArrayInputStream(os.toByteArray());