zoukankan      html  css  js  c++  java
  • java 上传图片 打水印

    其实就是在现有的图片上,画东西,也可以直接 贴图片

            //添加水印
    	@Override
    	public File pressFile(File file,String press_path) throws IOException {
    		// TODO Auto-generated method stub
    		File newFile=null;
                    String pressText="TOGO";
    		String path=file.getPath();
    		String oldFileName=file.getName();
    		//目标文件
    		Image src = ImageIO.read(file);
    		int wideth = src.getWidth(null);
    		int height = src.getHeight(null);
    		BufferedImage image = new BufferedImage(wideth, height,
    		BufferedImage.TYPE_INT_RGB);
    		Graphics2D g = image.createGraphics();
    		g.drawImage(src, 0, 0, wideth, height, null);
    		
    		//水印文件
    		File pressFile=new File(press_path+"/images/LOGO.png");
    		Image press_img=ImageIO.read(pressFile);
    		int press_wideth=press_img.getWidth(null);
    		int press_height=press_img.getHeight(null);
    		//添加图片水印
    		g.drawImage(press_img,wideth-press_wideth,height-press_height,press_wideth,press_height,null);	
    		g.drawImage(press_img,(wideth-press_wideth)/2,(height-press_height)/2,press_wideth,press_height,null);
    		g.drawImage(press_img,10,10,press_wideth,press_height,null);
    		//添加文字水印
                    g.setColor(Color.RED);
                    g.setFont(new Font(fontName, fontStyle, fontSize));
                    g.drawString(pressText, 10, 10);
                    //添加完成
                    g.dispose();
                    //输出保存文件
                    FileOutputStream out = new FileOutputStream(path);
    		file.delete();
    		JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);		
    //		JPEGEncodeParam param=encoder.getDefaultJPEGEncodeParam(image);   //图片质量
    //		param.setQuality(1, true);
    		encoder.encode(image);
    		out.close(); 
    
    		return newFile;
    	}


  • 相关阅读:
    面试题1:赋值运算符函数
    面试题:寻找热门查询
    面试题9:斐波那契数列
    Java中的volatile关键字
    二分查找算法
    面试题8:旋转数组的最小数字
    面试题:在O(1)空间复杂度范围内对一个数组中前后连段有序数组进行归并排序
    百度面试题:从海量日志中提取访问百度次数最多的IP
    面试总结
    java垃圾回收
  • 原文地址:https://www.cnblogs.com/james1207/p/3275770.html
Copyright © 2011-2022 走看看