使用Jmagick
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http://www.agoit.com/images/smiles/icon_sad.gif
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 logoPathlogo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("")){
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();
}
}
}
}
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