使用Jmagick压缩高质量图片

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 和 复制到jdk的bin(例“E:/Java/jdk1.5.0_10/bin”)文件里各一份 

      将 jmagick.jar 复制到Tomcat下的lib文件夹里 和 所使用项目的WEB-INF下lib文件里 各一份

 

linux

  朋友配的 得自己去网上找资料 :(

 

 

 

 

操作范例

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();
            }
        }
    }
}