package mytiny.com.common;
import java.awt.Color;
import java.awt.Graphics2D;import java.awt.Image;import java.awt.image.BufferedImage;import java.io.File;import javax.imageio.ImageIO;
public class ImageZipUtil {
public static void main(String[] args) {
zipWidthHeightImageFile(new File("D:\\3.png"), new File("D:\\3.png"), 375, 180, 0.8f);// System.out.println("ok");
}/**
* 根据设置的宽高等比例压缩图片文件<br> * 先保存原文件，再压缩、上传 * * @param oldFile * 要进行压缩的文件 * @param newFile * 新文件 * @param width * 宽度 //设置宽度时（高度传入0，等比例缩放） * @param height * 高度 //设置高度时（宽度传入0，等比例缩放） * @param quality * 质量 * @return 返回压缩后的文件的全路径 */ public static String zipImageFile(File oldFile, File newFile, int width, int height, float quality) { if (oldFile == null) { return null; } try { /** 对服务器上的临时文件进行处理 */ Image srcFile = ImageIO.read(oldFile); int w = srcFile.getWidth(null); int h = srcFile.getHeight(null); double bili; if (width > 0) { bili = width / (double) w; height = (int) (h * bili); } else { if (height > 0) { bili = height / (double) h; width = (int) (w * bili); } }String srcImgPath = newFile.getAbsoluteFile().toString();
// System.out.println(srcImgPath); String subfix = "jpg"; subfix = srcImgPath.substring(srcImgPath.lastIndexOf(".") + 1, srcImgPath.length());BufferedImage buffImg = null;
if (subfix.equals("png")) { buffImg = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB); } else { buffImg = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); }Graphics2D graphics = buffImg.createGraphics();
graphics.setBackground(new Color(255, 255, 255)); graphics.setColor(new Color(255, 255, 255)); graphics.fillRect(0, 0, width, height); graphics.drawImage(srcFile.getScaledInstance(width, height, Image.SCALE_SMOOTH), 0, 0, null);ImageIO.write(buffImg, subfix, new File(srcImgPath));
} catch (Exception e) {
e.printStackTrace(); } return newFile.getAbsolutePath(); }/**
* 按设置的宽度高度压缩图片文件<br> * 先保存原文件，再压缩、上传 * * @param oldFile * 要进行压缩的文件全路径 * @param newFile * 新文件 * @param width * 宽度 * @param height * 高度 * @param quality * 质量 * @return 返回压缩后的文件的全路径 */ public static boolean zipWidthHeightImageFile(File oldFile, File newFile, int width, int height, float quality) { if (oldFile == null) { return false; } Image srcFile = null; BufferedImage buffImg = null; try { /** 对服务器上的临时文件进行处理 */ srcFile = ImageIO.read(oldFile);String srcImgPath = newFile.getAbsoluteFile().toString();
// System.out.println(srcImgPath); String subfix = "jpg"; subfix = srcImgPath.substring(srcImgPath.lastIndexOf(".") + 1, srcImgPath.length());if (subfix.equals("png")) {
buffImg = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB); } else { buffImg = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); }Graphics2D graphics = buffImg.createGraphics();
graphics.setBackground(new Color(255, 255, 255)); graphics.setColor(new Color(255, 255, 255)); graphics.fillRect(0, 0, width, height); graphics.drawImage(srcFile.getScaledInstance(width, height, Image.SCALE_SMOOTH), 0, 0, null);ImageIO.write(buffImg, subfix, new File(srcImgPath));
return true;} catch (Exception e) {
e.printStackTrace(); return false; } finally { if (srcFile != null) { srcFile.flush(); } if (buffImg != null) { buffImg.flush(); }}
}
}