Image compression ratio

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Image compression ratio

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1. dependence introduced:

<dependency>
      <groupId>net.coobird</groupId>
      <artifactId>thumbnailator</artifactId>
      <version>0.4.8</version>
</dependency>

2. To achieve compressed code:

BufferedImage img = ImageIO.read(new File("D:/images/aa.png"));
File outFile = new File("D:/images/cc.png");	
		Thumbnails.of(img)
        .scale(0.25f)    //0-1f 图片压缩比例，接近0失真
        .outputQuality(1f)   //默认为1
        .toFile(outFile);