【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(); 
            } 
        } 
    } 
}