ffmepg入门学习十 java给图片添加水印

    
    
package com.qihui.qxj.utils;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;

import javax.imageio.ImageIO;
public class Main {
public static void main(String[] args) throws IOException {
String sourceImg= "D:\\test.jpg"; //源图片地址
String targetImg= "D:\\123.jpg"; //新存储的地址
addWatermark(sourceImg, targetImg);
}


/** 设置文字水印
* @param sourceImg 源图片路径
* @param targetImg 保存的图片路径
* @throws IOException
*/
public static void addWatermark(String sourceImg, String targetImg) throws IOException {
File srcImgFile = new File(sourceImg);
Image srcImg = ImageIO.read(srcImgFile);
int srcImgWidth = srcImg.getWidth( null);
int srcImgHeight = srcImg.getHeight( null);
int fontSize= 75;
Font font = new Font( "黑体，Arial", 1, fontSize);
BufferedImage bufImg = new BufferedImage(srcImgWidth, srcImgHeight, BufferedImage.TYPE_INT_RGB);
Graphics2D g = bufImg.createGraphics();
g.drawImage(srcImg, 0, 0, srcImgWidth, srcImgHeight, null);
g.setColor(Color.BLACK);
g.setFont(font);

//设置水印的坐标
g.drawString( "测试", 3196, 150);
g.drawString( "性别:男", 3196, 150+( 120* 1));
g.drawString( "毕业学校:XXX大学", 3196, 150+( 120* 2));
g.setColor(Color.white);
font = new Font( "黑体，Arial", 1, 120);
g.setFont(font);
g.drawString( "广东省深圳(SHENZHEN)", 3000, 2020);
g.dispose();
// 输出图片
FileOutputStream outImgStream = new FileOutputStream(targetImg);
ImageIO.write(bufImg, "jpg", outImgStream);
System.out.println( "添加水印完成");
outImgStream.flush();
outImgStream.close();
}
}
    
    

效果图： 

 可能有些朋友会存在，增加的文字水印没有效果的问题，那可能是图片的宽和高度有问题，需要调整代码的x，y坐标。

注意：图片的左上角为坐标的原点(0,0)  例如测试两个文字的坐标为(3196, 150)

我的原图为4090*2160

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转载自：https://blog.csdn.net/qq_16855077/article/details/90378173

  
  
package com.qihui.qxj.utils;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;

import javax.imageio.ImageIO;
public class Main {
public static void main(String[] args) throws IOException {
String sourceImg= "D:\\test.jpg"; //源图片地址
String targetImg= "D:\\123.jpg"; //新存储的地址
addWatermark(sourceImg, targetImg);
}


/** 设置文字水印
* @param sourceImg 源图片路径
* @param targetImg 保存的图片路径
* @throws IOException
*/
public static void addWatermark(String sourceImg, String targetImg) throws IOException {
File srcImgFile = new File(sourceImg);
Image srcImg = ImageIO.read(srcImgFile);
int srcImgWidth = srcImg.getWidth( null);
int srcImgHeight = srcImg.getHeight( null);
int fontSize= 75;
Font font = new Font( "黑体，Arial", 1, fontSize);
BufferedImage bufImg = new BufferedImage(srcImgWidth, srcImgHeight, BufferedImage.TYPE_INT_RGB);
Graphics2D g = bufImg.createGraphics();
g.drawImage(srcImg, 0, 0, srcImgWidth, srcImgHeight, null);
g.setColor(Color.BLACK);
g.setFont(font);

//设置水印的坐标
g.drawString( "测试", 3196, 150);
g.drawString( "性别:男", 3196, 150+( 120* 1));
g.drawString( "毕业学校:XXX大学", 3196, 150+( 120* 2));
g.setColor(Color.white);
font = new Font( "黑体，Arial", 1, 120);
g.setFont(font);
g.drawString( "广东省深圳(SHENZHEN)", 3000, 2020);
g.dispose();
// 输出图片
FileOutputStream outImgStream = new FileOutputStream(targetImg);
ImageIO.write(bufImg, "jpg", outImgStream);
System.out.println( "添加水印完成");
outImgStream.flush();
outImgStream.close();
}
}