为什么80%的码农都做不了架构师?>>>
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PNGif(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;}}