java GraphicsMagick入门

1,安装GraphicsMagick

http://ftp.icm.edu.pl/pub/unix/graphics/GraphicsMagick/windows/

2，下载java的GraphicsMagick库

http://ncu.dl.sourceforge.net/project/im4java/im4java-1.4.0/im4java-1.4.0-bin.tar.bz2

3，例子

/**
 * 
 */

/**
 * @author Administrator
 *
 */
 
import org.im4java.core.ConvertCmd;
import org.im4java.core.IMOperation;
 

public class ImageMagick {
	 
	 /** * ImageMagick的路径 */
	  public static String imageMagickPath = null;
	  static{ /**获取ImageMagick的路径 */
	   //Properties prop = new PropertiesFile().getPropertiesFile();
	   //linux下不要设置此值，不然会报错
	   //imageMagickPath = prop.getProperty("imageMagickPath");
	  }
	   
	  /** * 根据坐标裁剪图片
	  * @param srcPath 要裁剪图片的路径
	  * @param newPath 裁剪图片后的路径
	  * @param x 起始横坐标
	  * @param y 起始挫坐标
	  * @param x1 结束横坐标
	  * @param y1 结束挫坐标
	  */
	  public static void cutImage(String srcPath, String newPath, int x, int y, int x1, int y1)
	   throws Exception {
	   int width = x1 - x; int height = y1 - y;
	   IMOperation op = new IMOperation();
	   op.addImage(srcPath);
	   /**
	    * width：裁剪的宽度
	    * height：裁剪的高度
	    * x：裁剪的横坐标
	    * y：裁剪的挫坐标
	    */
	   op.crop(width, height, x, y);
	   op.addImage(newPath);
	   ConvertCmd convert = new ConvertCmd();
	   //linux下不要设置此值，不然会报错
	   //convert.setSearchPath(imageMagickPath);
	   convert.run(op);
	 }
	   
	  /**
	   * 根据尺寸缩放图片
	   * @param width 缩放后的图片宽度
	   * @param height 缩放后的图片高度
	   * @param srcPath 源图片路径
	   * @param newPath 缩放后图片的路径
	   * @param type 1为比例处理，2为大小处理，如（比例：1024x1024,大小：50%x50%）
	   */
	  public static String cutImage(int width, int height, String srcPath, String newPath,int type,String quality) throws Exception {
	   IMOperation op = new IMOperation();      
	   ConvertCmd cmd = new ConvertCmd(true);
	   op.addImage();
	   String raw = "";
	   if(type == 1){
	    //按像素
	    raw = width+"x"+height+"^";
	   }else{
	    //按像素百分比
	    raw = width+"%x"+height+"%";
	   } 
	   op.addRawArgs("-sample" ,  raw );  
	   if((quality !=null && quality.equals(""))){
	    op.addRawArgs("-quality" ,  quality );
	   }
	   op.addImage();  
	    
	   String osName = System.getProperty("os.name").toLowerCase();
	   if(osName.indexOf("win") != -1) {
	    //linux下不要设置此值，不然会报错
	    cmd.setSearchPath("C:\\Program Files\\GraphicsMagick-1.3.19-Q8");
	   }
	 
	   try{
	    cmd.run(op, srcPath, newPath);       
	   }catch(Exception e){
	    e.printStackTrace();
	   }
	   return newPath;
	 }
	  
	   
	 /**
	  * 给图片加水印
	  * @param srcPath 源图片路径
	  */
	  public static void addImgText(String srcPath) throws Exception {
	   IMOperation op = new IMOperation();  
	   op.font("Arial").gravity("southeast").pointsize(18).fill("#BCBFC8").draw("text 100,100 i2tong.com"); 
	   op.addImage();
	   op.addImage();   
	    
	   String osName = System.getProperty("os.name").toLowerCase();   
	   ConvertCmd cmd = new ConvertCmd(true);
	   if(osName.indexOf("win") != -1) {
	    //linux下不要设置此值，不然会报错
	    cmd.setSearchPath("C:\\Program Files\\GraphicsMagick-1.3.19-Q8");
	   }
	 
	   try{
	    cmd.run(op, srcPath, srcPath);       
	   }catch(Exception e){
	    e.printStackTrace();
	   }
	  }
	   
	  public static void main(String[] args) throws Exception{
	   //cutImage("D:\\apple870.jpg", "D:\\apple870eee.jpg",98, 48, 370, 320);
	   Long start = System.currentTimeMillis();
	   //cutImage(100,100, "e:\\37AF7D10F2D8448A9A5.jpg","e:\\37AF7D10F2D8448A9A5_bak2.jpg",2,"100");
	   addImgText("c:\\1.jpg");
	   Long end = System.currentTimeMillis();
	   System.out.println("time:"+(end-start)/3600);
	  }
	}