package net.kitbox.util; 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:lldy  * time:2012-5-6下午6:37:18  * 图片处理工具类：<br>  * 功能：缩放图像、切割图像、图像类型转换、彩色转黑白、文字水印、图片水印等  */ public class ImageUtils {     /**      * 相对于图片的位置      */     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;     /**      * 几种常见的图片格式      */     public static String IMAGE_TYPE_GIF = "gif";// 图形交换格式     public static String IMAGE_TYPE_JPG = "jpg";// 联合照片专家组     public static String IMAGE_TYPE_JPEG = "jpeg";// 联合照片专家组     public static String IMAGE_TYPE_BMP = "bmp";// 英文Bitmap（位图）的简写，它是Windows操作系统中的标准图像文件格式     public static String IMAGE_TYPE_PNG = "png";// 可移植网络图形     private static ImageUtils instance;     private ImageUtils() {         instance = this;     }     /**      * 获取实例      * @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();         System.out.println(bufferedImage.getWidth());         System.out.println(bufferedImage.getHeight());         return bufferedImage;     }     /**      * 缩放并转换格式后保存      * @param srcPath源路径      * @param destPath目标路径      * @param width：目标宽      * @param height：目标高      * @param format：文件格式      * @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); // 绘制缩小后的图             g.dispose();             flag = ImageIO.write(tag, format, new FileOutputStream(destFile));// 输出到文件流         } catch (IOException e) {             e.printStackTrace();         }         return flag;     }     /**      * 缩放Image，此方法返回源图像按百分比缩放后的图像      * @param inputImage      * @param percentage 百分比 允许的输入0<percentage<10000      * @return      */     public static BufferedImage scaleByPercentage(BufferedImage inputImage,int percentage){         //允许百分比         if(0>percentage||percentage>10000){             throw new ImagingOpException("Error::不合法的参数:percentage->"+percentage+",percentage应该大于0~小于10000");         }               //获取原始图像透明度类型         int type = inputImage.getColorModel().getTransparency();         //获取目标图像大小         int w=inputImage.getWidth()*percentage;         int h=inputImage.getHeight()*percentage;         //开启抗锯齿         RenderingHints renderingHints=new RenderingHints(RenderingHints.KEY_INTERPOLATION,                 RenderingHints.VALUE_ANTIALIAS_ON);         //使用高质量压缩         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;         /*此代码将返回Image类型         return inputImage.getScaledInstance(inputImage.getWidth()*percentage,                 inputImage.getHeight()*percentage, Image.SCALE_SMOOTH);         */     }     /**      * 缩放Image，此方法返回源图像按给定最大宽度限制下按比例缩放后的图像      * @param inputImage      * @param maxWidth：压缩后允许的最大宽度      * @param maxHeight：压缩后允许的最大高度      * @throws java.io.IOException      * return      */     public static BufferedImage scaleByPixelRate(BufferedImage inputImage, int maxWidth, int maxHeight) throws Exception {         //获取原始图像透明度类型         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);         }         //开启抗锯齿         RenderingHints renderingHints=new RenderingHints(RenderingHints.KEY_INTERPOLATION,                 RenderingHints.VALUE_ANTIALIAS_ON);         //使用高质量压缩         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Image，此方法返回源图像按给定宽度、高度限制下缩放后的图像      * @param inputImage      * @param maxWidth：压缩后宽度      * @param maxHeight：压缩后高度      * @throws java.io.IOException      * return      */     public static BufferedImage scaleByPixel(BufferedImage inputImage, int newWidth, int newHeight) throws Exception {         //获取原始图像透明度类型         int type = inputImage.getColorModel().getTransparency();         int width = inputImage.getWidth();         int height = inputImage.getHeight();         //开启抗锯齿         RenderingHints renderingHints=new RenderingHints(RenderingHints.KEY_ANTIALIASING,                 RenderingHints.VALUE_ANTIALIAS_ON);         //使用高质量压缩         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;     }     /**      * 切割图像，返回指定范围的图像      * @param inputImage      * @param x 起点横坐标      * @param y 起点纵坐标      * @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 指定目标图像大小超出时是否补白，如果true，则表示补白；false表示不补白，此时将重置目标图像大小      * @return      */     public static BufferedImage cut(BufferedImage inputImage,int x,int y,int width,int height,boolean fill){         //获取原始图像透明度类型         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("起点横坐标超出源图像范围");         if(y>h)             throw new ImagingOpException("起点纵坐标超出源图像范围");         BufferedImage img;         //补白         if(fill){             img = new BufferedImage(width, height, type);             //宽度超出限制             if((w-x)<width){                 width=w-x;                 endx=w;             }             //高度超出限制             if((h-y)<height){                 height=h-y;                 endy=h;             }         //不补         }else{             //宽度超出限制             if((w-x)<width){                 width=w-x;                 endx=w;             }             //高度超出限制             if((h-y)<height){                 height=h-y;                 endy=h;             }             img = new BufferedImage(width, height, type);          }         //开启抗锯齿         RenderingHints renderingHints=new RenderingHints(RenderingHints.KEY_INTERPOLATION,                 RenderingHints.VALUE_ANTIALIAS_ON);         //使用高质量压缩         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;     }     /**      * 切割图像，返回指定起点位置指定大小图像      * @param inputImage      * @param startPoint 起点位置：左上：0、右上:10、左下:1、右下:11      * @param width 切割图片宽度      * @param height 切割图片高度      * @param fill 指定目标图像大小超出时是否补白，如果true，则表示补白；false表示不补白，此时将重置目标图像大小      * @return      */     public static BufferedImage cut(BufferedImage inputImage,int startPoint,int width,int height,boolean fill){         //获取原始图像透明度类型         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;         //不补         }else{             if(width>w)                 width=w;             if(height>h)                 height=h;             img = new BufferedImage(width, height, type);         }         //开启抗锯齿         RenderingHints renderingHints=new RenderingHints(RenderingHints.KEY_INTERPOLATION,                 RenderingHints.VALUE_ANTIALIAS_ON);         //使用高质量压缩         renderingHints.put(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_RENDER_QUALITY);               Graphics2D graphics2d =img.createGraphics();         graphics2d.setRenderingHints(renderingHints);         switch(startPoint){                 //右上             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;                 //右下             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：使用正角度 theta 进行旋转，可将正 x 轴上的点转向正 y 轴。      * @param inputImage      * @param degree 角度:以度数为单位      * @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();         //开启抗锯齿         RenderingHints renderingHints=new RenderingHints(RenderingHints.KEY_INTERPOLATION,                 RenderingHints.VALUE_ANTIALIAS_ON);         //使用高质量压缩         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;     }     /**      * 水平翻转图像      *      * @param bufferedimage 目标图像      * @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;     }     /**      * 竖直翻转图像      *      * @param bufferedimage 目标图像      * @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;     }       /**      * 图片水印      *      * @param inputImage      *            待处理图像      * @param markImage      *            水印图像      * @param x      *            水印位于图片左上角的 x 坐标值      * @param y      *            水印位于图片左上角的 y 坐标值      * @param alpha      *            水印透明度 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);             // 加载水印图像             g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP,                             alpha));             g.drawImage(markImage, x, y, null);             g.dispose();             return image;     }     /**      * 文字水印      *      * @param inputImage      *            待处理图像      * @param text      *            水印文字      * @param font      *            水印字体信息      * @param color      *            水印字体颜色      * @param x      *            水印位于图片左上角的 x 坐标值      * @param y      *            水印位于图片左上角的 y 坐标值      * @param alpha      *            水印透明度 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;     }      /**      * 图像彩色转黑白色      * @param inputImage      * @return 转换后的BufferedImage      */     public final static BufferedImage toGray(BufferedImage inputImage)     {             ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_GRAY);             //对源 BufferedImage 进行颜色转换。如果目标图像为 null，             //则根据适当的 ColorModel 创建 BufferedImage。             ColorConvertOp op = new ColorConvertOp(cs, null);             return op.filter(inputImage, null);     }     /**      * 图像彩色转为黑白      * @param srcImageFile      *            源图像地址      * @param destImageFile      *            目标图像地址      * @param formatType      *              目标图像格式：如果formatType为null;将默认转换为PNG      */     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;将默认转换为PNG             if(formatType==null){                 formatType="PNG";             }             ImageIO.write(src,formatType,new File(destImageFile));         } catch (IOException e)         {             e.printStackTrace();         }     }     /**      * 图像类型转换：GIF->JPG、GIF->PNG、PNG->JPG、PNG->GIF(X)、BMP->PNG      *      * @param inputImage      *            源图像地址      * @param formatType      *            包含格式非正式名称的 String：如JPG、JPEG、GIF等      * @param destImageFile      *            目标图像地址      */     public final static void convert(BufferedImage inputImage, String formatType,String destImageFile)     {         try         {             ImageIO.write(inputImage, formatType, new File(destImageFile));         } catch (Exception e)         {             e.printStackTrace();         }     }     /**      * 图像切割（指定切片的行数和列数）      *      * @param srcImageFile      *            源图像地址      * @param destDir      *            切片目标文件夹      * @param formatType      *              目标格式      * @param rows      *            目标切片行数。默认2，必须是范围 [1, 20] 之内      * @param cols      *            目标切片列数。默认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             // 读取源图像             //BufferedImage bi = ImageIO.read(new File(srcImageFile));             int w = inputImage.getHeight(); // 源图宽度             int h = inputImage.getWidth(); // 源图高度             if (w > 0 && h > 0)             {                 Image img;                 ImageFilter cropFilter;                 Image image = inputImage.getScaledInstance(w, h,                         Image.SCALE_DEFAULT);                 int destWidth = w; // 每张切片的宽度                 int destHeight = h; // 每张切片的高度                 // 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:是否可用多线程加快切割速度                 for (int i = 0; i < rows; i++)                 {                     for (int j = 0; j < cols; j++)                     {                         // 四个参数分别为图像起点坐标和宽高                         // 即: 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); // 绘制缩小后的图                         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();         }     }     /**      * 给图片添加文字水印      *      * @param pressText      *            水印文字      * @param srcImageFile      *            源图像地址      * @param destImageFile      *            目标图像地址      * @param fontName      *            水印的字体名称      * @param fontStyle      *            水印的字体样式      * @param color      *            水印的字体颜色      * @param fontSize      *            水印的字体大小      * @param x      *            修正值      * @param y      *            修正值      * @param alpha      *            透明度：alpha 必须是范围 [0.0, 1.0] 之内（包含边界值）的一个浮点数字      * @param formatType      *              目标格式      */     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));             // 在指定坐标绘制水印文字             g.drawString(pressText, (width - (getLength(pressText) * fontSize))                     / 2 + x, (height - fontSize) / 2 + y);             g.dispose();             ImageIO.write((BufferedImage) image, formatType,                     new File(destImageFile));// 输出到文件流         } catch (Exception e)         {             e.printStackTrace();         }     }     /**      * 给图片添加图片水印      *      * @param pressImg      *            水印图片      * @param srcImageFile      *            源图像地址      * @param destImageFile      *            目标图像地址      * @param x      *            修正值。 默认在中间      * @param y      *            修正值。 默认在中间      * @param alpha      *            透明度：alpha 必须是范围 [0.0, 1.0] 之内（包含边界值）的一个浮点数字      * @param formatType      *              目标格式      */     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);             // 水印文件             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);             // 水印文件结束             g.dispose();             ImageIO.write((BufferedImage) image, formatType,                     new File(destImageFile));         } catch (Exception e)         {             e.printStackTrace();         }     }     /**      * 计算text的长度（一个中文算两个字符）      *      * @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;     } }