java处理图片

public class ImageUtils {
/**
* 对图片进行放大
* @param originalImage 原始图片
* @param times 放大倍数
* @return
*/
public static BufferedImage  zoomInImage(BufferedImage  originalImage, Integer times){
int width = originalImage.getWidth()*times;
int height = originalImage.getHeight()*times;
BufferedImage newImage = new BufferedImage(width,height,originalImage.getType());
Graphics g = newImage.getGraphics();
g.drawImage(originalImage, 0,0,width,height,null);
g.dispose();
return newImage;
}
/**
* 对图片进行放大
* @param srcPath 原始图片路径(绝对路径)
* @param newPath 放大后图片路径（绝对路径）
* @param times 放大倍数
* @return 是否放大成功
*/
public static boolean zoomInImage(String srcPath,String newPath,Integer times){
BufferedImage bufferedImage = null;
try {
File of = new File(srcPath);
if(of.canRead()){
bufferedImage =  ImageIO.read(of);
}
} catch (IOException e) {
//TODO: 打印日志
return false;
}
if(bufferedImage != null){
bufferedImage = zoomInImage(bufferedImage,times);
try {
//TODO: 这个保存路径需要配置下子好一点
ImageIO.write(bufferedImage, "JPG", new File(newPath)); //保存修改后的图像,全部保存为JPG格式
} catch (IOException e) {
// TODO 打印错误信息
return false;
}
}
return true;
}
/**
* 对图片进行缩小
* @param originalImage 原始图片
* @param times 缩小倍数
* @return 缩小后的Image
*/
public static BufferedImage  zoomOutImage(BufferedImage  originalImage, Integer times){
int width = originalImage.getWidth()/times;
int height = originalImage.getHeight()/times;
BufferedImage newImage = new BufferedImage(width,height,originalImage.getType());
Graphics g = newImage.getGraphics();
g.drawImage(originalImage, 0,0,width,height,null);
g.dispose();
return newImage;
}
/**
* 对图片进行缩小
* @param srcPath 源图片路径（绝对路径）
* @param newPath 新图片路径（绝对路径）
* @param times 缩小倍数
* @return 保存是否成功
*/
public static boolean zoomOutImage(String srcPath,String newPath,Integer times){
BufferedImage bufferedImage = null;
try {
File of = new File(srcPath);
if(of.canRead()){
bufferedImage =  ImageIO.read(of);
}
} catch (IOException e) {
//TODO: 打印日志
return false;
}
if(bufferedImage != null){
bufferedImage = zoomOutImage(bufferedImage,times);
try {
//TODO: 这个保存路径需要配置下子好一点
ImageIO.write(bufferedImage, "JPG", new File(newPath)); //保存修改后的图像,全部保存为JPG格式
} catch (IOException e) {
// TODO 打印错误信息
return false;
}
}
return true;
}