/**
* 按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
*/
@SuppressWarnings("restriction")
public static String zipWidthHeightImageFile(
File oldFile, File newFile, int width, int height, float quality) {
if (oldFile == null) {
return null;
}
String newImage = 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);
/** 宽,高设定 */
BufferedImage tag = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
tag.getGraphics().drawImage(srcFile, 0, 0, width, height, null);
// String filePrex = oldFile.substring(0, oldFile.indexOf('.'));
/** 压缩后的文件名 */
// newImage = filePrex + smallIcon+ oldFile.substring(filePrex.length());
/** 压缩之后临时存放位置 */
FileOutputStream out = new FileOutputStream(newFile);
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
JPEGEncodeParam jep = JPEGCodec.getDefaultJPEGEncodeParam(tag);
/** 压缩质量 */
jep.setQuality(quality, true);
encoder.encode(tag, jep);
out.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return newImage;
}
private void createImage(OutputStream out) {
int width = 100;
int height = 100;
BufferedImage bi = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
Graphics2D g = bi.createGraphics();
// set background color
g.setBackground(Color.BLUE);
g.clearRect(0, 0, width, height);
// set color
g.setColor(Color.RED);
g.drawLine(0, 0, 99, 99);
g.dispose();
bi.flush();
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(bi);
param.setQuality(1.0f, false);
encoder.setJPEGEncodeParam(param);
try {
encoder.encode(bi);
} catch (IOException e) {
e.printStackTrace();
}
}
public static void saveJPG(Image img, String s) {
BufferedImage bi =
new BufferedImage(img.getWidth(null), img.getHeight(null), BufferedImage.TYPE_INT_RGB);
Graphics2D g2 = bi.createGraphics();
g2.drawImage(img, null, null);
FileOutputStream out = null;
try {
out = new FileOutputStream(s);
} catch (java.io.FileNotFoundException io) {
System.out.println("File Not Found");
}
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(bi);
param.setQuality(0.5f, false);
encoder.setJPEGEncodeParam(param);
try {
encoder.encode(bi);
out.close();
} catch (java.io.IOException io) {
System.out.println("IOException");
}
}
/**
* @param bufInputStream
* @param outputStream
*/
private void writeScaledImage(BufferedInputStream bufInputStream, OutputStream outputStream) {
long millis = System.currentTimeMillis();
try {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
int bytesRead = 0;
byte[] buffer = new byte[8192];
while ((bytesRead = bufInputStream.read(buffer, 0, 8192)) != -1) {
bos.write(buffer, 0, bytesRead);
}
bos.close();
byte[] imageBytes = bos.toByteArray();
Image image = Toolkit.getDefaultToolkit().createImage(imageBytes);
MediaTracker mediaTracker = new MediaTracker(new Container());
mediaTracker.addImage(image, 0);
mediaTracker.waitForID(0);
// determine thumbnail size from WIDTH and HEIGHT
int thumbWidth = 300;
int thumbHeight = 200;
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);
}
// draw original image to thumbnail image object and
// scale it to the new size on-the-fly
BufferedImage thumbImage =
new BufferedImage(thumbWidth, thumbHeight, BufferedImage.TYPE_INT_RGB);
Graphics2D graphics2D = thumbImage.createGraphics();
graphics2D.setRenderingHint(
RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
graphics2D.drawImage(image, 0, 0, thumbWidth, thumbHeight, null);
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(outputStream);
JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(thumbImage);
int quality = 70;
quality = Math.max(0, Math.min(quality, 100));
param.setQuality((float) quality / 100.0f, false);
encoder.setJPEGEncodeParam(param);
encoder.encode(thumbImage);
} catch (IOException ex) {
log.error(ex.getMessage(), ex);
} catch (InterruptedException ex) {
log.error(ex.getMessage(), ex);
} finally {
log.debug("Time for thumbnail: " + (System.currentTimeMillis() - millis) + "ms");
}
}
/** Derived classes should implement this method and encode the input BufferedImage as needed */
public void encodeImage(BufferedImage buf, File imageFile) throws SVGGraphics2DIOException {
try {
OutputStream os = new FileOutputStream(imageFile);
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(os);
JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(buf);
param.setQuality(1, false);
encoder.encode(buf, param);
os.flush();
os.close();
} catch (IOException e) {
throw new SVGGraphics2DIOException(ERR_WRITE + imageFile.getName());
}
}
public static void crop(
String src, String dest, int scaledWith, int scaledHeight, int x, int y, int w, int h)
throws IOException {
BufferedImage image = ImageIO.read(new File(src));
int widthOrigin = image.getWidth();
int heightOrigin = image.getHeight();
if (x < 0 || y < 0 || w <= 0 || h <= 0) {
throw new IllegalArgumentException("裁剪参数不正确");
}
// 需要缩放
if (scaledWith > 0
&& scaledHeight > 0
&& scaledWith != heightOrigin
&& scaledHeight != widthOrigin) {
BufferedImage imageScale =
new BufferedImage(scaledWith, scaledHeight, BufferedImage.TYPE_INT_RGB);
imageScale
.getGraphics()
.drawImage(
image.getScaledInstance(scaledWith, scaledHeight, java.awt.Image.SCALE_SMOOTH),
0,
0,
null);
image = imageScale;
} else {
scaledWith = widthOrigin;
scaledHeight = heightOrigin;
}
if (x + w > scaledWith || y + h > scaledHeight) {
throw new IllegalArgumentException("裁剪参数不正确");
}
// 开始裁剪
BufferedImage imageCrop = image.getSubimage(x, y, w, h);
FileOutputStream newimage = null;
try {
newimage = new FileOutputStream(dest);
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(newimage);
JPEGEncodeParam jep = JPEGCodec.getDefaultJPEGEncodeParam(imageCrop);
jep.setQuality(1.0f, true);
encoder.encode(imageCrop, jep);
} finally {
if (newimage != null) {
newimage.close();
}
}
}
// write a buffered image to a jpeg file.
protected static void saveJPG(Image img, String filename) {
BufferedImage bi = imageToBufferedImage(img);
FileOutputStream out = null;
try {
out = new FileOutputStream(filename);
} catch (java.io.FileNotFoundException io) {
System.out.println("File Not Found");
}
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(bi);
param.setQuality(0.8f, false);
encoder.setJPEGEncodeParam(param);
try {
encoder.encode(bi);
out.close();
} catch (java.io.IOException io) {
System.out.println("IOException");
}
}
/**
* ����gifͼƬ
*
* @param originalFile ԭͼƬ
* @param resizedFile ���ź��ͼƬ
* @param newWidth ���
* @param quality ���ű��� (�ȱ���)
* @throws IOException
*/
private static void resize(File originalFile, File resizedFile, int newWidth, float quality)
throws IOException {
if (quality < 0 || quality > 1)
throw new IllegalArgumentException("Quality has to be between 0 and 1");
ImageIcon ii = new ImageIcon(originalFile.getCanonicalPath());
Image i = ii.getImage();
Image resizedImage = null;
int iWidth = i.getWidth(null);
int iHeight = i.getHeight(null);
if (iWidth > iHeight)
resizedImage = i.getScaledInstance(newWidth, newWidth * iHeight / iWidth, Image.SCALE_SMOOTH);
else
resizedImage = i.getScaledInstance(newWidth * iWidth / iHeight, newWidth, Image.SCALE_SMOOTH);
// This code ensures that all the pixels in the image are loaded.
Image temp = new ImageIcon(resizedImage).getImage();
// Create the buffered image.
BufferedImage bufferedImage =
new BufferedImage(temp.getWidth(null), temp.getHeight(null), BufferedImage.TYPE_INT_RGB);
// Copy image to buffered image.
Graphics g = bufferedImage.createGraphics();
// Clear background and paint the image.
g.setColor(Color.white);
g.fillRect(0, 0, temp.getWidth(null), temp.getHeight(null));
g.drawImage(temp, 0, 0, null);
g.dispose();
// Soften.
float softenFactor = 0.05f;
float[] softenArray = {
0, softenFactor, 0, softenFactor, 1 - softenFactor * 4, softenFactor, 0, softenFactor, 0
};
Kernel kernel = new Kernel(3, 3, softenArray);
ConvolveOp cOp = new ConvolveOp(kernel, ConvolveOp.EDGE_NO_OP, null);
bufferedImage = cOp.filter(bufferedImage, null);
// Write the jpeg to a file.
FileOutputStream out = new FileOutputStream(resizedFile);
// Encodes image as a JPEG data stream
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(bufferedImage);
param.setQuality(quality, true);
encoder.setJPEGEncodeParam(param);
encoder.encode(bufferedImage);
}
/**
* 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);
}
}
/** 宽,高设定 */
BufferedImage tag = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
tag.getGraphics().drawImage(srcFile, 0, 0, width, height, null);
// String filePrex = oldFile.getName().substring(0, oldFile.getName().indexOf('.'));
/** 压缩后的文件名 */
// newImage = filePrex + smallIcon+ oldFile.getName().substring(filePrex.length());
/** 压缩之后临时存放位置 */
FileOutputStream out = new FileOutputStream(newFile);
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
JPEGEncodeParam jep = JPEGCodec.getDefaultJPEGEncodeParam(tag);
/** 压缩质量 */
jep.setQuality(quality, true);
encoder.encode(tag, jep);
out.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return newFile.getAbsolutePath();
}
/**
* @see ImageWriter#writeImage(java.awt.image.RenderedImage, java.io.OutputStream,
* org.apache.batik.ext.awt.image.spi.ImageWriterParams)
*/
public void writeImage(RenderedImage image, OutputStream out, ImageWriterParams params)
throws IOException {
BufferedImage bi;
if (image instanceof BufferedImage) {
bi = (BufferedImage) image;
} else {
// TODO Is this the right way?
bi = GraphicsUtil.makeLinearBufferedImage(image.getWidth(), image.getHeight(), false);
}
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
if (params != null) {
JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(bi);
if (params.getJPEGQuality() != null) {
param.setQuality(
params.getJPEGQuality().floatValue(), params.getJPEGForceBaseline().booleanValue());
}
encoder.encode(bi, param);
} else {
encoder.encode(bi);
}
}