package com.mandi.common; import java.awt.AlphaComposite; import java.awt.Color; import java.awt.Font; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Image; import java.awt.RenderingHints; import java.awt.Toolkit; import java.awt.color.ColorSpace; import java.awt.image.BufferedImage; import java.awt.image.ColorConvertOp; import java.awt.image.CropImageFilter; import java.awt.image.FilteredImageSource; import java.awt.image.ImageFilter; import java.awt.image.ImagingOpException; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import javax.imageio.ImageIO; /** * @author mengly * @version 创建时间:2016å¹´4月21æ—¥ 下åˆ6:01:01 * 类说明 */ public class ImageUtils { /** * 相对于图片的ä½ç½® */ private static final int POSITION_UPPERLEFT=0; private static final int POSITION_UPPERRIGHT=10; private static final int POSITION_LOWERLEFT=1; private static final int POSITION_LOWERRIGHT=11; /** * å‡ ç§å¸¸è§çš„å›¾ç‰‡æ ¼å¼ */ public static String IMAGE_TYPE_GIF = "gif";// å›¾å½¢äº¤æ¢æ ¼å¼ public static String IMAGE_TYPE_JPG = "jpg";// è”åˆç…§ç‰‡ä¸“家组 public static String IMAGE_TYPE_JPEG = "jpeg";// è”åˆç…§ç‰‡ä¸“家组 public static String IMAGE_TYPE_BMP = "bmp";// 英文Bitmap(ä½å›¾ï¼‰çš„简写,它是Windowsæ“作系统ä¸çš„æ ‡å‡†å›¾åƒæ–‡ä»¶æ ¼å¼ public static String IMAGE_TYPE_PNG = "png";// å¯ç§»æ¤ç½‘络图形 private static ImageUtils instance; private ImageUtils() { instance = this; } /** * 获å–实例 * @return */ public static ImageUtils getInstance() { if (instance == null) { instance = new ImageUtils(); } return instance; } public BufferedImage image2BufferedImage(Image image){ System.out.println(image.getWidth(null)); System.out.println(image.getHeight(null)); BufferedImage bufferedImage = new BufferedImage(image.getWidth(null), image.getHeight(null), BufferedImage.TYPE_INT_ARGB); Graphics2D g = bufferedImage.createGraphics(); g.drawImage(image, null, null); g.dispose(); return bufferedImage; } /** * ç¼©æ”¾å¹¶è½¬æ¢æ ¼å¼åŽä¿å˜ * @param srcPathæºè·¯å¾„ * @param destPathç›®æ ‡è·¯å¾„ * @param widthï¼šç›®æ ‡å®½ * @param heightï¼šç›®æ ‡é«˜ * @param formatï¼šæ–‡ä»¶æ ¼å¼ * @return */ public static boolean scaleToFile(String srcPath, String destPath, int width, int height,String format) { boolean flag = false; try { File file = new File(srcPath); File destFile = new File(destPath); if (!destFile.getParentFile().exists()) { destFile.getParentFile().mkdir(); } BufferedImage src = ImageIO.read(file); // 读入文件 Image image = src.getScaledInstance(width, height, Image.SCALE_DEFAULT); BufferedImage tag = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); Graphics g = tag.getGraphics(); g.drawImage(image, 0, 0, null); // 绘制缩å°åŽçš„图 g.dispose(); flag = ImageIO.write(tag, format, new FileOutputStream(destFile));// è¾“å‡ºåˆ°æ–‡ä»¶æµ } catch (IOException e) { e.printStackTrace(); } return flag; } /** * 缩放Imageï¼Œæ¤æ–¹æ³•返回æºå›¾åƒæŒ‰ç™¾åˆ†æ¯”缩放åŽçš„å›¾åƒ * @param inputImage * @param percentage 百分比 å…许的输入0<percentage<10000 * @return */ public static BufferedImage scaleByPercentage(BufferedImage inputImage,int percentage){ //å…许百分比 if(0>percentage||percentage>10000){ throw new ImagingOpException("Error::ä¸åˆæ³•çš„å‚æ•°:percentage->"+percentage+",percentage应该大于0~å°äºŽ10000"); } //获å–原始图åƒé€æ˜Žåº¦ç±»åž‹ int type = inputImage.getColorModel().getTransparency(); //获å–ç›®æ ‡å›¾åƒå¤§å° int w=inputImage.getWidth()*percentage; int h=inputImage.getHeight()*percentage; //å¼€å¯æŠ—é”¯é½¿ RenderingHints renderingHints=new RenderingHints(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_ANTIALIAS_ON); //使用高质é‡åŽ‹ç¼© renderingHints.put(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_RENDER_QUALITY); BufferedImage img = new BufferedImage(w, h, type); Graphics2D graphics2d =img.createGraphics(); graphics2d.setRenderingHints(renderingHints); graphics2d.drawImage(inputImage, 0, 0, w, h, 0, 0, inputImage .getWidth(), inputImage.getHeight(), null); graphics2d.dispose(); return img; /*æ¤ä»£ç 将返回Image类型 return inputImage.getScaledInstance(inputImage.getWidth()*percentage, inputImage.getHeight()*percentage, Image.SCALE_SMOOTH); */ } /** * 缩放Imageï¼Œæ¤æ–¹æ³•返回æºå›¾åƒæŒ‰ç»™å®šæœ€å¤§å®½åº¦é™åˆ¶ä¸‹æŒ‰æ¯”例缩放åŽçš„å›¾åƒ * @param inputImage * @param maxWidth:压缩åŽå…许的最大宽度 * @param maxHeight:压缩åŽå…许的最大高度 * @throws java.io.IOException * return */ public static BufferedImage scaleByPixelRate(BufferedImage inputImage, int maxWidth, int maxHeight) throws Exception { //获å–原始图åƒé€æ˜Žåº¦ç±»åž‹ int type = inputImage.getColorModel().getTransparency(); int width = inputImage.getWidth(); int height = inputImage.getHeight(); int newWidth = maxWidth; int newHeight =maxHeight; //如果指定最大宽度超过比例 if(width*maxHeight<height*maxWidth){ newWidth=(int)(newHeight*width/height) ; } //如果指定最大高度超过比例 if(width*maxHeight>height*maxWidth){ newHeight=(int)(newWidth*height/width); } //å¼€å¯æŠ—é”¯é½¿ RenderingHints renderingHints=new RenderingHints(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_ANTIALIAS_ON); //使用高质é‡åŽ‹ç¼© renderingHints.put(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_RENDER_QUALITY); BufferedImage img = new BufferedImage(newWidth, newHeight, type); Graphics2D graphics2d =img.createGraphics(); graphics2d.setRenderingHints(renderingHints); graphics2d.drawImage(inputImage, 0, 0, newWidth, newHeight, 0, 0, width, height, null); graphics2d.dispose(); return img; } /** * 缩放Imageï¼Œæ¤æ–¹æ³•返回æºå›¾åƒæŒ‰ç»™å®šå®½åº¦ã€é«˜åº¦é™åˆ¶ä¸‹ç¼©æ”¾åŽçš„å›¾åƒ * @param inputImage * @param maxWidth:压缩åŽå®½åº¦ * @param maxHeight:压缩åŽé«˜åº¦ * @throws java.io.IOException * return */ public static BufferedImage scaleByPixel(BufferedImage inputImage, int newWidth, int newHeight) throws Exception { //获å–原始图åƒé€æ˜Žåº¦ç±»åž‹ int type = inputImage.getColorModel().getTransparency(); int width = inputImage.getWidth(); int height = inputImage.getHeight(); //å¼€å¯æŠ—é”¯é½¿ RenderingHints renderingHints=new RenderingHints(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); //使用高质é‡åŽ‹ç¼© renderingHints.put(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY); BufferedImage img = new BufferedImage(newWidth, newHeight, type); Graphics2D graphics2d =img.createGraphics(); graphics2d.setRenderingHints(renderingHints); graphics2d.drawImage(inputImage, 0, 0, newWidth, newHeight, 0, 0, width, height, null); graphics2d.dispose(); return img; } /** * 切割图åƒï¼Œè¿”å›žæŒ‡å®šèŒƒå›´çš„å›¾åƒ * @param inputImage * @param x èµ·ç‚¹æ¨ªåæ ‡ * @param y èµ·ç‚¹çºµåæ ‡ * @param width 切割图片宽度:如果宽度超出图片,将改为图片自x剩余宽度 * @param height 切割图片高度:如果高度超出图片,将改为图片自y剩余高度 * @param fill æŒ‡å®šç›®æ ‡å›¾åƒå¤§å°è¶…出时是å¦è¡¥ç™½ï¼Œå¦‚æžœtrue,则表示补白;false表示ä¸è¡¥ç™½ï¼Œæ¤æ—¶å°†é‡ç½®ç›®æ ‡å›¾åƒå¤§å° * @return */ public static BufferedImage cut(BufferedImage inputImage,int x,int y,int width,int height,boolean fill){ //获å–原始图åƒé€æ˜Žåº¦ç±»åž‹ int type = inputImage.getColorModel().getTransparency(); int w = inputImage.getWidth(); int h = inputImage.getHeight(); int endx=x+width; int endy=y+height; if(x>w) throw new ImagingOpException("èµ·ç‚¹æ¨ªåæ ‡è¶…出æºå›¾åƒèŒƒå›´"); if(y>h) throw new ImagingOpException("èµ·ç‚¹çºµåæ ‡è¶…出æºå›¾åƒèŒƒå›´"); BufferedImage img; //补白 if(fill){ img = new BufferedImage(width, height, type); //宽度超出é™åˆ¶ if((w-x)<width){ width=w-x; endx=w; } //高度超出é™åˆ¶ if((h-y)<height){ height=h-y; endy=h; } //ä¸è¡¥ }else{ //宽度超出é™åˆ¶ if((w-x)<width){ width=w-x; endx=w; } //高度超出é™åˆ¶ if((h-y)<height){ height=h-y; endy=h; } img = new BufferedImage(width, height, type); } //å¼€å¯æŠ—é”¯é½¿ RenderingHints renderingHints=new RenderingHints(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_ANTIALIAS_ON); //使用高质é‡åŽ‹ç¼© renderingHints.put(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_RENDER_QUALITY); Graphics2D graphics2d =img.createGraphics(); graphics2d.setRenderingHints(renderingHints); graphics2d.drawImage(inputImage, 0, 0, width, height, x, y, endx, endy, null); graphics2d.dispose(); return img; } /** * 切割图åƒï¼Œè¿”回指定起点ä½ç½®æŒ‡å®šå¤§å°å›¾åƒ * @param inputImage * @param startPoint 起点ä½ç½®ï¼šå·¦ä¸Šï¼š0ã€å³ä¸Š:10ã€å·¦ä¸‹:1ã€å³ä¸‹:11 * @param width 切割图片宽度 * @param height 切割图片高度 * @param fill æŒ‡å®šç›®æ ‡å›¾åƒå¤§å°è¶…出时是å¦è¡¥ç™½ï¼Œå¦‚æžœtrue,则表示补白;false表示ä¸è¡¥ç™½ï¼Œæ¤æ—¶å°†é‡ç½®ç›®æ ‡å›¾åƒå¤§å° * @return */ public static BufferedImage cut(BufferedImage inputImage,int startPoint,int width,int height,boolean fill){ //获å–原始图åƒé€æ˜Žåº¦ç±»åž‹ int type = inputImage.getColorModel().getTransparency(); int w = inputImage.getWidth(); int h = inputImage.getHeight(); BufferedImage img; //补白 if(fill){ img = new BufferedImage(width, height, type); if(width>w) width=w; if(height>h) height=h; //ä¸è¡¥ }else{ if(width>w) width=w; if(height>h) height=h; img = new BufferedImage(width, height, type); } //å¼€å¯æŠ—é”¯é½¿ RenderingHints renderingHints=new RenderingHints(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_ANTIALIAS_ON); //使用高质é‡åŽ‹ç¼© renderingHints.put(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_RENDER_QUALITY); Graphics2D graphics2d =img.createGraphics(); graphics2d.setRenderingHints(renderingHints); switch(startPoint){ //å³ä¸Š case POSITION_UPPERRIGHT: graphics2d.drawImage(inputImage, w-width, 0, w, height, 0, 0, width, height, null); break; //左下 case POSITION_LOWERLEFT: graphics2d.drawImage(inputImage, 0, h-height, width, h, 0, 0, width, height, null); break; //å³ä¸‹ case POSITION_LOWERRIGHT: graphics2d.drawImage(inputImage, w-width, h-height, w, h, 0, 0, width, height, null); break; //默认左上 case POSITION_UPPERLEFT: default: graphics2d.drawImage(inputImage, 0, 0, width, height, 0, 0, width, height, null); } graphics2d.dispose(); return img; } /** * 以指定角度旋转图片:使用æ£è§’度 theta 进行旋转,å¯å°†æ£ x è½´ä¸Šçš„ç‚¹è½¬å‘æ£ y 轴。 * @param inputImage * @param degree 角度:以度数为å•ä½ * @return */ public static BufferedImage rotateImage(final BufferedImage inputImage, final int degree) { int w = inputImage.getWidth(); int h = inputImage.getHeight(); int type = inputImage.getColorModel().getTransparency(); BufferedImage img=new BufferedImage(w, h, type); Graphics2D graphics2d =img.createGraphics(); //å¼€å¯æŠ—é”¯é½¿ RenderingHints renderingHints=new RenderingHints(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_ANTIALIAS_ON); //使用高质é‡åŽ‹ç¼© renderingHints.put(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_RENDER_QUALITY); graphics2d.setRenderingHints(renderingHints); graphics2d.rotate(Math.toRadians(degree), w / 2, h / 2); graphics2d.drawImage(inputImage, 0, 0, null); graphics2d.dispose(); return img; } /** * æ°´å¹³ç¿»è½¬å›¾åƒ * * @param bufferedimage ç›®æ ‡å›¾åƒ * @return */ public static BufferedImage flipHorizontalImage(final BufferedImage inputImage) { int w = inputImage.getWidth(); int h = inputImage.getHeight(); BufferedImage img; Graphics2D graphics2d; (graphics2d = (img = new BufferedImage(w, h, inputImage .getColorModel().getTransparency())).createGraphics()) .drawImage(inputImage, 0, 0, w, h, w, 0, 0, h, null); graphics2d.dispose(); return img; } /** * ç«–ç›´ç¿»è½¬å›¾åƒ * * @param bufferedimage ç›®æ ‡å›¾åƒ * @return */ public static BufferedImage flipVerticalImage(final BufferedImage inputImage) { int w = inputImage.getWidth(); int h = inputImage.getHeight(); BufferedImage img; Graphics2D graphics2d; (graphics2d = (img = new BufferedImage(w, h, inputImage .getColorModel().getTransparency())).createGraphics()) .drawImage(inputImage, 0, 0, w, h, 0, h, w, 0, null); graphics2d.dispose(); return img; } /** * å›¾ç‰‡æ°´å° * * @param inputImage * 待处ç†å›¾åƒ * @param markImage * æ°´å°å›¾åƒ * @param x * æ°´å°ä½äºŽå›¾ç‰‡å·¦ä¸Šè§’çš„ x åæ ‡å€¼ * @param y * æ°´å°ä½äºŽå›¾ç‰‡å·¦ä¸Šè§’çš„ y åæ ‡å€¼ * @param alpha * æ°´å°é€æ˜Žåº¦ 0.1f ~ 1.0f * */ public static BufferedImage waterMark(BufferedImage inputImage,BufferedImage markImage, int x, int y, float alpha) { BufferedImage image = new BufferedImage(inputImage.getWidth(), inputImage .getHeight(), BufferedImage.TYPE_INT_ARGB); Graphics2D g = image.createGraphics(); g.drawImage(inputImage, 0, 0, null); // åŠ è½½æ°´å°å›¾åƒ g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, alpha)); g.drawImage(markImage, x, y, null); g.dispose(); return image; } /** * æ–‡å—æ°´å° * * @param inputImage * 待处ç†å›¾åƒ * @param text * æ°´å°æ–‡å— * @param font * æ°´å°å—ä½“ä¿¡æ¯ * @param color * æ°´å°å—体颜色 * @param x * æ°´å°ä½äºŽå›¾ç‰‡å·¦ä¸Šè§’çš„ x åæ ‡å€¼ * @param y * æ°´å°ä½äºŽå›¾ç‰‡å·¦ä¸Šè§’çš„ y åæ ‡å€¼ * @param alpha * æ°´å°é€æ˜Žåº¦ 0.1f ~ 1.0f */ public static BufferedImage textMark(BufferedImage inputImage, String text, Font font, Color color, int x, int y, float alpha) { Font dfont = (font == null) ? new Font("宋体", 20, 13) : font; BufferedImage image = new BufferedImage(inputImage.getWidth(), inputImage .getHeight(), BufferedImage.TYPE_INT_ARGB); Graphics2D g = image.createGraphics(); g.drawImage(inputImage, 0, 0, null); g.setColor(color); g.setFont(dfont); g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, alpha)); g.drawString(text, x, y); g.dispose(); return image; } /** * 图åƒå½©è‰²è½¬é»‘白色 * @param inputImage * @return 转æ¢åŽçš„BufferedImage */ public final static BufferedImage toGray(BufferedImage inputImage) { ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_GRAY); //å¯¹æº BufferedImage 进行颜色转æ¢ã€‚å¦‚æžœç›®æ ‡å›¾åƒä¸º null, //åˆ™æ ¹æ®é€‚当的 ColorModel 创建 BufferedImage。 ColorConvertOp op = new ColorConvertOp(cs, null); return op.filter(inputImage, null); } /** * 图åƒå½©è‰²è½¬ä¸ºé»‘白 * @param srcImageFile * æºå›¾åƒåœ°å€ * @param destImageFile * ç›®æ ‡å›¾åƒåœ°å€ * @param formatType * ç›®æ ‡å›¾åƒæ ¼å¼ï¼šå¦‚æžœformatType为null;将默认转æ¢ä¸ºPNG */ public final static void toGray(String srcImageFile, String destImageFile,String formatType) { try { BufferedImage src = ImageIO.read(new File(srcImageFile)); ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_GRAY); ColorConvertOp op = new ColorConvertOp(cs, null); src = op.filter(src, null); //如果formatType为null;将默认转æ¢ä¸ºPNG if(formatType==null){ formatType="PNG"; } ImageIO.write(src,formatType,new File(destImageFile)); } catch (IOException e) { e.printStackTrace(); } } /** * 图åƒç±»åž‹è½¬æ¢ï¼šGIF->JPGã€GIF->PNGã€PNG->JPGã€PNG->GIF(X)ã€BMP->PNG * * @param inputImage * æºå›¾åƒåœ°å€ * @param formatType * åŒ…å«æ ¼å¼éžæ£å¼åç§°çš„ String:如JPGã€JPEGã€GIFç‰ * @param destImageFile * ç›®æ ‡å›¾åƒåœ°å€ */ public final static void convert(BufferedImage inputImage, String formatType,String destImageFile) { try { ImageIO.write(inputImage, formatType, new File(destImageFile)); } catch (Exception e) { e.printStackTrace(); } } /** * 图åƒåˆ‡å‰²ï¼ˆæŒ‡å®šåˆ‡ç‰‡çš„行数和列数) * * @param srcImageFile * æºå›¾åƒåœ°å€ * @param destDir * åˆ‡ç‰‡ç›®æ ‡æ–‡ä»¶å¤¹ * @param formatType * ç›®æ ‡æ ¼å¼ * @param rows * ç›®æ ‡åˆ‡ç‰‡è¡Œæ•°ã€‚é»˜è®¤2,必须是范围 [1, 20] 之内 * @param cols * ç›®æ ‡åˆ‡ç‰‡åˆ—æ•°ã€‚é»˜è®¤2,必须是范围 [1, 20] 之内 */ public final static void cut(BufferedImage inputImage, String destDir, String formatType,int rows, int cols) { try { if (rows <= 0 || rows > 20) rows = 2; // 切片行数 if (cols <= 0 || cols > 20) cols = 2; // 切片列数 // è¯»å–æºå›¾åƒ //BufferedImage bi = ImageIO.read(new File(srcImageFile)); int w = inputImage.getHeight(); // æºå›¾å®½åº¦ int h = inputImage.getWidth(); // æºå›¾é«˜åº¦ if (w > 0 && h > 0) { Image img; ImageFilter cropFilter; Image image = inputImage.getScaledInstance(w, h, Image.SCALE_DEFAULT); int destWidth = w; // æ¯å¼ 切片的宽度 int destHeight = h; // æ¯å¼ 切片的高度 // 计算切片的宽度和高度 if (w % cols == 0) { destWidth = w / cols; } else { destWidth = (int) Math.floor(w / cols) + 1; } if (h % rows == 0) { destHeight = h / rows; } else { destHeight = (int) Math.floor(h / rows) + 1; } // 循环建立切片 // 改进的想法:是å¦å¯ç”¨å¤šçº¿ç¨‹åŠ å¿«åˆ‡å‰²é€Ÿåº¦ for (int i = 0; i < rows; i++) { for (int j = 0; j < cols; j++) { // å››ä¸ªå‚æ•°åˆ†åˆ«ä¸ºå›¾åƒèµ·ç‚¹åæ ‡å’Œå®½é«˜ // å³: CropImageFilter(int x,int y,int width,int height) cropFilter = new CropImageFilter(j * destWidth, i * destHeight, destWidth, destHeight); img = Toolkit.getDefaultToolkit().createImage( new FilteredImageSource(image.getSource(), cropFilter)); BufferedImage tag = new BufferedImage(destWidth, destHeight, BufferedImage.TYPE_INT_ARGB); Graphics g = tag.getGraphics(); g.drawImage(img, 0, 0, null); // 绘制缩å°åŽçš„图 g.dispose(); // 输出为文件 ImageIO.write(tag, formatType, new File(destDir + "_r" + i + "_c" + j + "."+formatType.toLowerCase())); } } } } catch (Exception e) { e.printStackTrace(); } } /** * ç»™å›¾ç‰‡æ·»åŠ æ–‡å—æ°´å° * * @param pressText * æ°´å°æ–‡å— * @param srcImageFile * æºå›¾åƒåœ°å€ * @param destImageFile * ç›®æ ‡å›¾åƒåœ°å€ * @param fontName * æ°´å°çš„å—体åç§° * @param fontStyle * æ°´å°çš„å—ä½“æ ·å¼ * @param color * æ°´å°çš„å—体颜色 * @param fontSize * æ°´å°çš„å—ä½“å¤§å° * @param x * ä¿®æ£å€¼ * @param y * ä¿®æ£å€¼ * @param alpha * 逿˜Žåº¦ï¼šalpha 必须是范围 [0.0, 1.0] 之内(包å«è¾¹ç•Œå€¼ï¼‰çš„ä¸€ä¸ªæµ®ç‚¹æ•°å— * @param formatType * ç›®æ ‡æ ¼å¼ */ public final static void pressText(String pressText, String srcImageFile, String destImageFile, String fontName, int fontStyle, Color color, int fontSize, int x, int y, float alpha,String formatType) { try { File img = new File(srcImageFile); Image src = ImageIO.read(img); int width = src.getWidth(null); int height = src.getHeight(null); BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB); Graphics2D g = image.createGraphics(); g.drawImage(src, 0, 0, width, height, null); g.setColor(color); g.setFont(new Font(fontName, fontStyle, fontSize)); g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, alpha)); // åœ¨æŒ‡å®šåæ ‡ç»˜åˆ¶æ°´å°æ–‡å— g.drawString(pressText, (width - (getLength(pressText) * fontSize)) / 2 + x, (height - fontSize) / 2 + y); g.dispose(); ImageIO.write((BufferedImage) image, formatType, new File(destImageFile));// è¾“å‡ºåˆ°æ–‡ä»¶æµ } catch (Exception e) { e.printStackTrace(); } } /** * ç»™å›¾ç‰‡æ·»åŠ å›¾ç‰‡æ°´å° * * @param pressImg * æ°´å°å›¾ç‰‡ * @param srcImageFile * æºå›¾åƒåœ°å€ * @param destImageFile * ç›®æ ‡å›¾åƒåœ°å€ * @param x * ä¿®æ£å€¼ã€‚ 默认在ä¸é—´ * @param y * ä¿®æ£å€¼ã€‚ 默认在ä¸é—´ * @param alpha * 逿˜Žåº¦ï¼šalpha 必须是范围 [0.0, 1.0] 之内(包å«è¾¹ç•Œå€¼ï¼‰çš„ä¸€ä¸ªæµ®ç‚¹æ•°å— * @param formatType * ç›®æ ‡æ ¼å¼ */ public final static void pressImage(String pressImg, String srcImageFile, String destImageFile, int x, int y, float alpha,String formatType) { try { File img = new File(srcImageFile); Image src = ImageIO.read(img); int wideth = src.getWidth(null); int height = src.getHeight(null); BufferedImage image = new BufferedImage(wideth, height, BufferedImage.TYPE_INT_ARGB); Graphics2D g = image.createGraphics(); g.drawImage(src, 0, 0, wideth, height, null); // æ°´å°æ–‡ä»¶ Image src_biao = ImageIO.read(new File(pressImg)); int wideth_biao = src_biao.getWidth(null); int height_biao = src_biao.getHeight(null); g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, alpha)); g.drawImage(src_biao, (wideth - wideth_biao) / 2, (height - height_biao) / 2, wideth_biao, height_biao, null); // æ°´å°æ–‡ä»¶ç»“æŸ g.dispose(); ImageIO.write((BufferedImage) image, formatType, new File(destImageFile)); } catch (Exception e) { e.printStackTrace(); } } /** * 计算textçš„é•¿åº¦ï¼ˆä¸€ä¸ªä¸æ–‡ç®—两个å—符) * * @param text * @return */ public final static int getLength(String text) { int length = 0; for (int i = 0; i < text.length(); i++) { if (new String(text.charAt(i) + "").getBytes().length > 1) { length += 2; } else { length += 1; } } return length / 2; } }