为图片打上水印

叁歲伎倆 2022-05-16 06:41 265阅读 0赞

import java.awt.*; 
    import java.io.*; 
    import java.text.ParseException;
    import java.text.SimpleDateFormat;
    import java.util.Date;
    import java.awt.image.*; 
    import com.sun.image.codec.jpeg.*; 
    import javax.imageio.*; 
    
    public class ImgBean{ 
    static Date birthday = null;
    public static void main(String[] args) throws ParseException {
    //	ImgYin("", "E:\\20121109_211615.jpg");
    	birthday = sdf.parse("20120823");
    	getImgFiles("D:\\photo");
    }
    static SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");
    static SimpleDateFormat sdf1 = new SimpleDateFormat("yyyy.MM.dd");
    public static void getImgFiles(String path){
    	File file = new File(path);
    	String[] files = file.list(new FilenameFilter() {//文件過濾器
    		@Override
    		public boolean accept(File dir, String name) {
    			if( name.endsWith(".jpg") && !name.contains("_sy") ){
    				return true;
    			}
    			return false;
    		}
    	});
    	for(String f : files){
    		if(f.matches("\\d{8}_.+")){
    			String imgdate = f.substring(0,f.indexOf("_"));
    			try {
    				Date date = sdf.parse(imgdate);
    				int day = diffDate(date)+1;
    				String imgname = "^-^第"+day+"天("+sdf1.format(date)+")";
    				System.out.println(path+"\\"+f);
    				ImgYin(imgname, path+"\\"+f);
    			} catch (ParseException e) {
    				e.printStackTrace();
    			}
    		}
    	}
    }
    public static void ImgYin(String ImgName,String ImgPath){ 
    	try{ 
    		float fz = 3264/150;//字體大小的因子
    //		s="^-^第60天(2012.8.15)"; 
    		File _file = new File(ImgPath); 
    		Image src = ImageIO.read(_file); 
    		int width=src.getWidth(null); 
    		int height=src.getHeight(null); 
    		System.out.println(width+"#"+height);
    		BufferedImage image=new BufferedImage(width,height,BufferedImage.TYPE_INT_RGB); 
    		Graphics g=image.createGraphics(); 
    		g.drawImage(src,0,0,width,height,null); 
    		g.setColor(Color.PINK); 
    		g.setFont(new Font("宋体",Font.PLAIN,(int)(width/fz))); 
    		System.out.println((int)(width/fz));
    		g.drawString(ImgName,(int)(width*0.48),(int)(height*0.1) ); 
    		g.dispose(); 
    		FileOutputStream out=new FileOutputStream(ImgPath); 
    		JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out); 
    		encoder.encode(image); 
    		out.close(); 
    	} 
    	catch(Exception e){ 
    		System.out.println(e); 
    	} 
    } 
    public static long getMillis(Date date) {
    	java.util.Calendar c = java.util.Calendar.getInstance();
    	c.setTime(date);
    	return c.getTimeInMillis();
    }
    //返回日期与今天相差的天数
    public static int diffDate(Date date){
    	return (int) ((getMillis(date) - getMillis(birthday)) / (24 * 3600 * 1000));
    }
    }