图片压缩

骑猪看日落 2021-12-20 14:27 456阅读 0赞

/\*\*  
\* ��������ͼ��  
\*/  
package utils;

/\*\*  
\* @author advance  
\*  
\*/  
import java.awt.Color;  
import java.awt.Graphics2D;  
import java.awt.Image;  
import java.awt.RenderingHints;  
import java.awt.image.BufferedImage;  
import java.io.File;

public class ThumbnailGenerator \{  
public static void main(String\[\] args) throws Exception \{  
transform("C:\\\\Users\\\\Administrator\\\\vspider\\\\files\\\\20190111\\\\image\\\\jpg\\\\0a08179283e02baefc529affd2dd30fe.jpg","C:\\\\Users\\\\Administrator\\\\Desktop\\\\新建文件夹 (2)\\\\aaa.jpg",200,300,1000);  
\}  
  
public static void transform(String originalFile, String thumbnailFile, int thumbWidth, int thumbHeight, int quality) throws Exception  
\{  
Image image = javax.imageio.ImageIO.read(new File(originalFile));  
  
double thumbRatio = (double)thumbWidth / (double)thumbHeight;  
int imageWidth = image.getWidth(null);  
int imageHeight = image.getHeight(null);  
double imageRatio = (double)imageWidth / (double)imageHeight;  
if (thumbRatio < imageRatio)  
\{  
thumbHeight = (int)(thumbWidth / imageRatio);  
\}  
else  
\{  
thumbWidth = (int)(thumbHeight \* imageRatio);  
\}  
  
if(imageWidth < thumbWidth && imageHeight < thumbHeight)  
\{  
thumbWidth = imageWidth;  
thumbHeight = imageHeight;  
\}  
else if(imageWidth < thumbWidth)  
thumbWidth = imageWidth;  
else if(imageHeight < thumbHeight)  
thumbHeight = imageHeight;

BufferedImage thumbImage = new BufferedImage(thumbWidth, thumbHeight, BufferedImage.TYPE\_INT\_RGB);  
Graphics2D graphics2D = thumbImage.createGraphics();  
graphics2D.setBackground(Color.WHITE);  
graphics2D.setPaint(Color.WHITE);  
graphics2D.fillRect(0, 0, thumbWidth, thumbHeight);  
graphics2D.setRenderingHint(RenderingHints.KEY\_INTERPOLATION, RenderingHints.VALUE\_INTERPOLATION\_BILINEAR);  
graphics2D.drawImage(image, 0, 0, thumbWidth, thumbHeight, null);  
  
javax.imageio.ImageIO.write(thumbImage, "JPG", new File(thumbnailFile));  
\}  
\}

转载于:https://www.cnblogs.com/chinaifae/p/10255537.html