【转】Jmagick的使用例子

jar包地址  http://downloads.jmagick.org/6.3.9/      



我在window下使用的是    jmagick-win-6.3.9-Q8.zip 和  ImageMagick-6.3.9-0-Q8-windows-dll.exe 

      linux下使用的是         JMagick-6.2.6-0.tar.gz    和 ImageMagick-x86_64-pc-linux-gnu.tar.gz             






doc地址   http://downloads.jmagick.org/jmagick-doc/ 



windows 

一 .  安装 ImageMagick-6.3.9-0-Q8-windows-dll.exe 



二 .  将 安装目录下 “C:\Program Files\ImageMagick-6.3.9-Q8\ ”(按自己所安装的目录找) 下的所有dll文件 copy 到系统盘下的 “C:\WINDOWS\system32\”文件夹里 



三 .  配置环境变量 

     再环境变量path里添加新的值 “C:\Program Files\ImageMagick-6.3.9-Q8” 



四 .  解压jmagick-win-6.3.9-Q8.zip 

       将 jmagick.dll 复制到系统盘下的 “C:\WINDOWS\system32\”文件夹里 

      将 jmagick.jar 项目lib下 



linux 

  朋友配的 得自己去网上找资料 









操作范例 

Java代码 
package com.utils;  

import java.awt.Dimension;  
import java.awt.Rectangle;  
import java.text.SimpleDateFormat;  
import java.util.Date;  



import magick.CompositeOperator;  
import magick.CompressionType;  
import magick.DrawInfo;  
import magick.ImageInfo;  
import magick.MagickException;  
import magick.MagickImage;  
import magick.PixelPacket;  
import magick.PreviewType;  

public class Aa {  

      
    static{  
        //不能漏掉这个，不然jmagick.jar的路径找不到  
        System.setProperty("jmagick.systemclassloader","no");  
    }  
      
    /** 
     * 压缩图片 
     * @param filePath 源文件路径 
     * @param toPath   缩略图路径 
     */ 
    public static void createThumbnail(String filePath, String toPath) throws MagickException{  
        ImageInfo info = null;  
        MagickImage image = null;  
        Dimension imageDim = null;  
        MagickImage scaled = null;  
        try{  
            info = new ImageInfo(filePath);  
            image = new MagickImage(info);  
            imageDim = image.getDimension();  
            int wideth = imageDim.width;  
            int height = imageDim.height;  
            if (wideth > height) {  
                height = 660 * height / wideth;  
                wideth = 660;  
            }   
            scaled = image.scaleImage(wideth, height);//小图片文件的大小.  
            scaled.setFileName(toPath);  
            scaled.writeImage(info);  
        }finally{  
            if(scaled != null){  
                scaled.destroyImages();  
            }  
        }    
    }  
      
    /** 
     * 水印(图片logo) 
     * @param filePath  源文件路径 
     * @param toImg     修改图路径 
     * @param logoPath  logo图路径 
     * @throws MagickException 
     */ 
    public static void initLogoImg(String filePath, String toImg, String logoPath) throws MagickException {  
        ImageInfo info = new ImageInfo();  
        MagickImage fImage = null;  
        MagickImage sImage = null;  
        MagickImage fLogo = null;  
        MagickImage sLogo = null;  
        Dimension imageDim = null;  
        Dimension logoDim = null;  
        try {  
            fImage = new MagickImage(new ImageInfo(filePath));  
            imageDim = fImage.getDimension();  
            int width = imageDim.width;  
            int height = imageDim.height;  
            if (width > 660) {  
                height = 660 * height / width;  
                width = 660;  
            }  
            sImage = fImage.scaleImage(width, height);  
              
            fLogo = new MagickImage(new ImageInfo(logoPath));  
            logoDim = fLogo.getDimension();  
            int lw = width / 8;  
            int lh = logoDim.height * lw / logoDim.width;  
            sLogo = fLogo.scaleImage(lw, lh);  

            sImage.compositeImage(CompositeOperator.AtopCompositeOp, sLogo,  width-(lw + lh/10), height-(lh + lh/10));  
            sImage.setFileName(toImg);  
            sImage.writeImage(info);  
        } finally {  
            if(sImage != null){  
                sImage.destroyImages();  
            }  
        }  
    }  
      
    /** 
     * 水印(文字) 
        * @param filePath 源文件路径 
     * @param toImg    修改图路径 
     * @param text     名字(文字内容自己随意) 
     * @throws MagickException 
     */ 
    public static void initTextToImg(String filePath, String toImg,  String text) throws MagickException{  
            ImageInfo info = new ImageInfo(filePath);  
            if (filePath.toUpperCase().endsWith("JPG") || filePath.toUpperCase().endsWith("JPEG")) {  
                info.setCompression(CompressionType.JPEGCompression); //压缩类别为JPEG格式  
                info.setPreviewType(PreviewType.JPEGPreview); //预览格式为JPEG格式  
                info.setQuality(95);  
            }  
            MagickImage aImage = new MagickImage(info);  
            Dimension imageDim = aImage.getDimension();  
            int wideth = imageDim.width;  
            int height = imageDim.height;  
            if (wideth > 660) {  
                height = 660 * height / wideth;  
                wideth = 660;  
            }  
            int a = 0;  
            int b = 0;  
            String[] as = text.split("");  
            for (String string : as) {  
                if(string.matches("[\u4E00-\u9FA5]")){  
                    a++;  
                }  
                if(string.matches("[a-zA-Z0-9]")){  
                    b++;  
                }  
            }  
            int tl = a*12 + b*6 + 300;  
            MagickImage scaled = aImage.scaleImage(wideth, height);  
            if(wideth > tl && height > 5){  
                DrawInfo aInfo = new DrawInfo(info);  
                aInfo.setFill(PixelPacket.queryColorDatabase("white"));  
                aInfo.setUnderColor(new PixelPacket(0,0,0,100));  
                aInfo.setPointsize(12);  
                //解决中文乱码问题,自己可以去随意定义个自己喜欢字体，我在这用的微软雅黑  
                String fontPath = "C:/WINDOWS/Fonts/MSYH.TTF";  
//              String fontPath = "/usr/maindata/MSYH.TTF";  
                aInfo.setFont(fontPath);  
                aInfo.setTextAntialias(true);  
                aInfo.setOpacity(0);  
                aInfo.setText("　" + text + "于　" + new SimpleDateFormat("yyyy-MM-dd").format(new Date()) + "　上传于XXXX网，版权归作者所有！");  
                aInfo.setGeometry("+" + (wideth-tl) + "+" + (height-5));  
                scaled.annotateImage(aInfo);  
            }  
            scaled.setFileName(toImg);  
            scaled.writeImage(info);  
            scaled.destroyImages();  
    }  
      
      
    /** 
     * 切图 
     * @param imgPath 源图路径 
     * @param toPath  修改图路径 
     * @param w        
     * @param h        
     * @param x        
     * @param y 
     * @throws MagickException 
     */ 
    public static void cutImg(String imgPath, String toPath, int w, int h, int x, int y) throws MagickException {  
        ImageInfo infoS = null;  
        MagickImage image = null;  
        MagickImage cropped = null;  
        Rectangle rect = null;  
        try {  
            infoS = new ImageInfo(imgPath);  
            image = new MagickImage(infoS);  
            rect = new Rectangle(x, y, w, h);  
            cropped = image.cropImage(rect);  
            cropped.setFileName(toPath);  
            cropped.writeImage(infoS);  
              
        } finally {  
            if (cropped != null) {  
                cropped.destroyImages();  
            }  
        }  
    }  
}