im4java-ImageMagick图片压缩处理

之前需要处理的图片一般都大于5mb，曾想利用java默认的工具处理图片，但后来经常内存溢出，于是找到   ImageMagick，GraphicsMagick ，发现 ImageMagick的处理能力很强，于是写了这个工具类，希望能帮助有需要的人。

因为im4java是基于imagemagick的commandline进行调用的java接口，不像 jmagick那样用java jni调用本地imagemagick的api那么复杂。其实安装imagemagick在任何平台都是一样的安装，在linux下面有rpm包，安装那个包，指定目录就可以了。windows一样，安装并指定安装路径就可以了。

图片压缩处理工具类：

package com.finddog.util;

import org.im4java.core.*;
import org.im4java.process.ArrayListOutputConsumer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * 图片处理工具类，经过测试ImageMagick7.x版本不支持，命令貌似换了，安装之后文件都不一样了
 * @author qixuan.chen
 *
 */
public class ImageMagickUtils {
    private static final Logger LOG = LoggerFactory.getLogger(ImageMagickUtils.class);

    /**
     * 是否使用 GraphicsMagick
     */
    private static final boolean USE_GRAPHICS_MAGICK_PATH = false;

    /**
     * GraphicsMagick
     */
    private static final String GRAPHICS_MAGICK_PATH = "";

    /**
     * 水印
     */
    private static String watermarkImagePath = "";

    /**
     * 水印图片
     */
    private static Image watermarkImage = null;

    static {
        try {
            //watermarkImage = ImageIO.read(new URL(watermarkImagePath));
            watermarkImagePath = SystemConfig.getWatermarkImagePath();
            watermarkImage = ImageIO.read(new File(SystemConfig.getWatermarkImagePath()));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * 命令类型
     */
    private enum CommandType {
        convert("转换处理"), identify("图片信息"), compositecmd("图片合成");
        private String name;

        CommandType(String name) {
            this.name = name;
        }
    }

    /**
     * 获取 ImageCommand
     *
     * @param command 命令类型
     * @return
     */
    private static ImageCommand getImageCommand(CommandType command) {
        ImageCommand cmd = null;
        switch (command) {
            case convert:
                cmd = new ConvertCmd(USE_GRAPHICS_MAGICK_PATH);
                break;
            case identify:
                cmd = new IdentifyCmd(USE_GRAPHICS_MAGICK_PATH);
                break;
            case compositecmd:
                cmd = new CompositeCmd(USE_GRAPHICS_MAGICK_PATH);
                break;
        }
        if (cmd != null && System.getProperty("os.name").toLowerCase().indexOf("windows") != -1) {
            cmd.setSearchPath(USE_GRAPHICS_MAGICK_PATH ? GRAPHICS_MAGICK_PATH : SystemConfig.getImageMagickPath());
        }
        return cmd;
    }

    /**
     * 获取图片信息
     *
     * @param srcImagePath 图片路径
     * @return Map {height=, filelength=, directory=, width=, filename=}
     */
    public static Map getImageInfo(String srcImagePath) {
        IMOperation op = new IMOperation();
        op.format("%w,%h,%d,%f,%b");
        op.addImage(srcImagePath);
        IdentifyCmd identifyCmd = (IdentifyCmd) getImageCommand(CommandType.identify);
        ArrayListOutputConsumer output = new ArrayListOutputConsumer();
        identifyCmd.setOutputConsumer(output);
        try {
            identifyCmd.run(op);
        } catch (Exception e) {
            e.printStackTrace();
        }
        ArrayList cmdOutput = output.getOutput();
        if (cmdOutput.size() != 1)
            return null;
        String line = cmdOutput.get(0);
        String[] arr = line.split(",");
        Map info = new HashMap();
        info.put("width", Integer.parseInt(arr[0]));
        info.put("height", Integer.parseInt(arr[1]));
        info.put("directory", arr[2]);
        info.put("filename", arr[3]);
        info.put("filelength", Integer.parseInt(arr[4]));
        return info;
    }

    /**
     * 文字水印
     *
     * @param srcImagePath 源图片路径
     * @param destImagePath 目标图片路径
     * @param content 文字内容（不支持汉字）
     * @throws Exception
     */
    public static void addTextWatermark(String srcImagePath, String destImagePath, String content)
            throws Exception {
        IMOperation op = new IMOperation();
        op.font("微软雅黑");
        // 文字方位-东南
        op.gravity("SouthEast");
        // 文字信息
        op.pointsize(18).fill("#BCBFC8").draw("text 80,10 " + content);
        // 原图
        op.addImage(srcImagePath);
        // 目标
        op.addImage(createDirectory(destImagePath));
        ImageCommand cmd = getImageCommand(CommandType.convert);
        cmd.run(op);
    }

    /**
     * 图片水印
     *
     * @param srcImagePath 源图片路径
     * @param destImagePath 目标图片路径
     * @param dissolve 透明度（0-100）
     * @throws Exception
     */
    public static void addImgWatermark(String srcImagePath, String destImagePath, Integer dissolve)
            throws Exception {
        // 原始图片信息
        BufferedImage buffimg = ImageIO.read(new File(srcImagePath));
        int w = buffimg.getWidth();
        int h = buffimg.getHeight();

        IMOperation op = new IMOperation();
        // 水印图片位置
        op.geometry(watermarkImage.getWidth(null), watermarkImage.getHeight(null), w
                - watermarkImage.getWidth(null) - 10, h - watermarkImage.getHeight(null) - 10);
        // 水印透明度
        op.dissolve(dissolve);
        // 水印
        op.addImage(watermarkImagePath);
        // 原图
        op.addImage(srcImagePath);
        // 目标
        op.addImage(createDirectory(destImagePath));
        ImageCommand cmd = getImageCommand(CommandType.compositecmd);
        cmd.run(op);
    }

    /**
     * 压缩图片
     *
     * @param srcImagePath 源图片路径
     * @param destImagePath 目标图片路径
     * @param width 压缩后的宽
     * @param height 压缩后的高
     * @param quality 压缩质量（0-100）
     * @param needWatermark 是否加水印
     * @return
     * @throws Exception
     */
    public static void resize(String srcImagePath, String destImagePath, int width, int height,
                              Double quality, boolean needWatermark) throws Exception {
        // 按照原有形状压缩（横图、竖图）
        BufferedImage buffimg = ImageIO.read(new File(srcImagePath));
        int w = buffimg.getWidth();
        int h = buffimg.getHeight();
        if ((w > h && width < height) || (w < h && width > height)) {
            int temp = width;
            width = height;
            height = temp;
        }
        // 是否压缩
        if (w < width || h < height) {
            // 不压缩-是否加水印
            if (needWatermark) {
                // 不压缩，加水印
                addImgWatermark(srcImagePath, destImagePath, 100);
            }
            return;
        }
        // 压缩-是否加水印
        if (needWatermark) {
            // 压缩-加水印比例
            double cropRatio = 0f;
            if ((width + 0.0) / (w + 0.0) > (height + 0.0) / (h + 0.0)) {
                cropRatio = (height + 0.0) / (h + 0.0);
            } else {
                cropRatio = (width + 0.0) / (w + 0.0);
            }
            IMOperation op = new IMOperation();
            ImageCommand cmd = getImageCommand(CommandType.compositecmd);
            op.geometry(watermarkImage.getWidth(null), watermarkImage.getHeight(null),
                    (int) (w * cropRatio) - watermarkImage.getWidth(null) - 10,
                    (int) (h * cropRatio) - watermarkImage.getHeight(null) - 10);
            op.addImage(watermarkImagePath);
            op.addImage(srcImagePath);
            op.quality(quality);
            op.resize(width, height);
            op.addImage(createDirectory(destImagePath));
            cmd.run(op);
            return;
        }

        // 压缩-不加水印
        ImageCommand cmd = getImageCommand(CommandType.convert);
        IMOperation op = new IMOperation();
        op.addImage(srcImagePath);
        op.quality(quality);
        op.resize(width, height);
        op.addImage(createDirectory(destImagePath));
        cmd.run(op);
    }

    /**
     * 去除Exif信息，可减小文件大小
     *
     * @param srcImagePath 源图片路径
     * @param destImagePath 目标图片路径
     * @throws Exception
     */
    public static void removeProfile(String srcImagePath, String destImagePath) throws Exception {
        IMOperation op = new IMOperation();
        op.addImage(srcImagePath);
        op.profile("*");
        op.addImage(createDirectory(destImagePath));
        ImageCommand cmd = getImageCommand(CommandType.convert);
        cmd.run(op);
    }

    /**
     * 等比缩放图片（如果width为空，则按height缩放; 如果height为空，则按width缩放）
     *
     * @param srcImagePath 源图片路径
     * @param destImagePath 目标图片路径
     * @param width 缩放后的宽度
     * @param height 缩放后的高度
     * @throws Exception
     */
    public static void scaleResize(String srcImagePath, String destImagePath, Integer width,
                                   Integer height) throws Exception {
        IMOperation op = new IMOperation();
        op.addImage(srcImagePath);
        op.sample(width, height);
        op.addImage(createDirectory(destImagePath));
        ImageCommand cmd = getImageCommand(CommandType.convert);
        cmd.run(op);
    }

    /**
     * 从原图中裁剪出新图
     *
     * @param srcImagePath 源图片路径
     * @param destImagePath 目标图片路径
     * @param x 原图左上角
     * @param y 原图左上角
     * @param width 新图片宽度
     * @param height 新图片高度
     * @throws Exception
     */
    public static void crop(String srcImagePath, String destImagePath, int x, int y, int width,
                            int height) throws Exception {
        IMOperation op = new IMOperation();
        op.addImage(srcImagePath);
        op.crop(width, height, x, y);
        op.addImage(createDirectory(destImagePath));
        ImageCommand cmd = getImageCommand(CommandType.convert);
        cmd.run(op);
    }

    /**
     * 将图片分割为若干小图
     *
     * @param srcImagePath 源图片路径
     * @param destImagePath 目标图片路径
     * @param width 指定宽度（默认为完整宽度）
     * @param height 指定高度（默认为完整高度）
     * @return 小图路径
     * @throws Exception
     */
    public static List subsection(String srcImagePath, String destImagePath, Integer width,
                                          Integer height) throws Exception {
        IMOperation op = new IMOperation();
        op.addImage(srcImagePath);
        op.crop(width, height);
        op.addImage(createDirectory(destImagePath));

        ImageCommand cmd = getImageCommand(CommandType.convert);
        cmd.run(op);

        return getSubImages(destImagePath);
    }

    /**
     * 旋转图片
     *
     * @param srcImagePath 源图片路径
     * @param destImagePath 目标图片路径
     * @param angle 旋转的角度
     * @return
     * @throws Exception
     */
    public static void rotate(String srcImagePath, String destImagePath, Double angle)
            throws Exception {
        File sourceFile = new File(srcImagePath);
        if (!sourceFile.exists() || !sourceFile.canRead() || !sourceFile.isFile()) {
            return;
        }

        BufferedImage buffimg = ImageIO.read(sourceFile);
        int w = buffimg.getWidth();
        int h = buffimg.getHeight();
        // 目标图片
        // if (w > h) { //如果宽度不大于高度则旋转过后图片会变大
        ImageCommand cmd = getImageCommand(CommandType.convert);
        IMOperation operation = new IMOperation();
        operation.addImage(srcImagePath);
        operation.rotate(angle);
        operation.addImage(destImagePath);
        cmd.run(operation);
        // }
    }

    /**
     * 获取图片分割后的小图路径
     *
     * @param destImagePath 目标图片路径
     * @return 小图路径
     */
    private static List getSubImages(String destImagePath) {
        // 文件所在目录
        String fileDir = destImagePath.substring(0, destImagePath.lastIndexOf(File.separatorChar));
        // 文件名称
        String fileName = destImagePath
                .substring(destImagePath.lastIndexOf(File.separatorChar) + 1);
        // 文件名（无后缀）
        String n1 = fileName.substring(0, fileName.lastIndexOf("."));
        // 后缀
        String n2 = fileName.replace(n1, "");

        List fileList = new ArrayList();
        String path = null;
        for (int i = 0;; i++) {
            path = fileDir + File.separatorChar + n1 + "-" + i + n2;
            if (new File(path).exists())
                fileList.add(path);
            else
                break;
        }
        return fileList;
    }

    /**
     * 创建目录
     *
     * @param path
     * @return path
     */
    private static String createDirectory(String path) {
        File file = new File(path);
        if (!file.exists())
            file.getParentFile().mkdirs();
        return path;
    }

    /**
     * 通过文件名获取文件类型
     *
     * @param fileName 文件名
     */
    private static String getFileType(String fileName) {
        if (fileName == null || "".equals(fileName.trim()) || fileName.lastIndexOf(".") == -1) {
            return null;
        }
        String type = fileName.substring(fileName.lastIndexOf(".") + 1);
        return type.toLowerCase();
    }
}

测试类：

package com.finddog.image;

import java.util.List;

import com.finddog.util.ImageMagickUtils;
import org.junit.Test;


/**
 * Unit test for simple App.
 * @author qixuan.chen
 */
public class AppTest {

    public static String path = "C:\\Users\\lenovo\\Pictures\\image\\xue.jpg";

    public static String newpath = "C:\\Users\\lenovo\\Pictures\\image\\test01.jpg";

    @Test
    public void test_getImageInfo() {

        System.out.println(ImageMagickUtils.getImageInfo(path));
    }

    @Test
    public void test_addTextMark() throws Exception {

        ImageMagickUtils.addTextWatermark(path, newpath, "finddog.time-weekly.com");
    }

    @Test
    public void test_addImgMark() throws Exception {

        ImageMagickUtils.addImgWatermark(path, newpath, 50);
    }


    @Test
    public void test_removeProfile() throws Exception {

        ImageMagickUtils.removeProfile(path, newpath);
    }

    @Test
    public void test_scaleResizeImage() throws Exception {

        ImageMagickUtils.scaleResize(path, newpath, 256, null);
    }

    @Test
    public void test_cropImage() throws Exception {

        ImageMagickUtils.crop(path, newpath, 0, 100, 400, 400);
    }

    @Test
    public void test_subsectionImage() throws Exception {

        List list = ImageMagickUtils.subsection(path, newpath, 200, 200);
        System.out.println(list);
    }

    @Test
    public void test_rotate() throws Exception {

        ImageMagickUtils.rotate(path, newpath, 10d);
    }

}

资源： http://download.csdn.net/detail/u010363836/9817963