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();
			}
		}
	}
}