使用Java裁剪图像

Question

如何使用Java裁剪图像？我目前有这个类的图像处理。

主要方法与运行方法：

public static void main(String[] args) { 
    GameProject gp = new GameProject(); 
    gp.run(); 
} 

public void run(){ 
    s = new Screen(); 

    try { 
     DisplayMode dm = s.findFirstCompatibleMode(modes); 
     s.setFullscreen(dm); 
     Fonts f = new Fonts(); //Checks if certain fonts exsist, if not install them. 
     Images i = new Images(); 

     try { 
      i.draw("H:\\Dropbox\\Dropbox\\GameProject\\src\\Resources\\brock.png", 200, 200); 
      Thread.sleep(50000); 
     } catch (Exception e) {} 
    } finally { 
     s.restoreScreen(); 
    } 
} 

图片类：

package Handlers; 

import javax.swing.ImageIcon; 
import java.awt.*; 

/** 
* 
* @author Steven 
*/ 
public class Images { 

    /** 
    * @param args the command line arguments 
    */ 
    private Screen s; 

    public void draw(String name, int x, int y) { //Draws the image 
     s = new Screen(); 
     Graphics2D g = s.getGraphics(); 
     draws(g, name, x, y, getWidth(name), getHeight(name)); 
    } 

    public void drawA(String name, int x, int y){ //Draws the image, allows for a more advanced image manipulation 
     s = new Screen(); 
     Graphics2D g = s.getGraphics(); 
     draws(g, name, x, y, getWidth(name), getHeight(name)); 
    }  

    public void draws(Graphics g, String name, int x, int y, int w, int h) { //Draws and updates the screen 
     s = new Screen(); 
     g.drawImage(new ImageIcon(name).getImage(), x, y, w, h, null); 
     s.update(); 
    } 

    public int getWidth(String name) { //Gets the image width 
     return new ImageIcon(name).getIconWidth(); 
    } 

    public int getHeight(String name) { //Gets the images height 
     return new ImageIcon(name).getIconHeight(); 
    } 

} 

任何帮助，将不胜感激。

Answer 1

您可以使用CropImageFilter来裁剪图像。另外，请看一下java.awt.image包，它有很多图像处理例程。

Answer 2

我在自己的项目中使用这样的： -

public boolean CropImage(int cropHeight,int cropWidth,int windowLeft,int windowTop,File srcFile,String destDirectory,String destFilename,int commonPadding,String fileFormat,HttpServletRequest request)throws IOException{ 
     boolean isOkResolution=false; 
     try { 
      String dirPath=request.getRealPath("")+"/"+destDirectory; 
      File f=new File(dirPath); 
      if(!f.isDirectory()){ 
       f.mkdir(); 
      } 
      String destpath=dirPath+"/"+destFilename; 
      File outputFile=new File(destpath); 
      FileInputStream fis=new FileInputStream(srcFile); 
      BufferedImage bimage=ImageIO.read(fis); 
      System.out.println("Image Origilnal Height=="+bimage.getHeight()); 
      BufferedImage oneimg=new BufferedImage(cropHeight,cropWidth,bimage.getType()); 
      Graphics2D gr2d=oneimg.createGraphics(); 
      isOkResolution=gr2d.drawImage(bimage,0,0,cropWidth,cropHeight,windowLeft-commonPadding,windowTop-commonPadding,(windowLeft+cropWidth)-commonPadding,(windowTop+cropHeight)-commonPadding,null); 
      gr2d.dispose(); 
      ImageIO.write(oneimg,fileFormat,outputFile); 
     } catch (FileNotFoundException fe) { 
      System.out.println("No File Found =="+fe); 
     } catch(Exception ex){ 
      System.out.println("Error in Croping File="+ex); 
      ex.printStackTrace(); 
     } 
     return isOkResolution; 
    } 

这种方法将帮助您裁剪为我project.Hope做工精细的image.Its它会帮助你。