package com.hdxinfo.util;
import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.RenderingHints;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import javax.imageio.ImageIO;
public class ImageMarkLogoByText {
/**
* 给图片添加水印
* @param logoText
* @param srcImgPath
* @param targerPath
*/
public static void markByText(String logoText, String srcImgPath,
String targerPath) {
markByText(logoText, srcImgPath, targerPath, null);
}
/**
* 给图片添加水印、可设置水印的旋转角度
* @param logoText
* @param srcImgPath
* @param targerPath
* @param degree
*/
public static void markByText(String logoText, String srcImgPath,
String targerPath, Integer degree) {
// 主图片的路径
InputStream is = null;
OutputStream os = null;
try {
Image srcImg = ImageIO.read(new File(srcImgPath));
BufferedImage buffImg = new BufferedImage(srcImg.getWidth(null),
srcImg.getHeight(null), BufferedImage.TYPE_INT_RGB);
// 得到画笔对象
// Graphics g= buffImg.getGraphics();
Graphics2D g = buffImg.createGraphics();
// 设置对线段的锯齿状边缘处理
g.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
RenderingHints.VALUE_INTERPOLATION_BILINEAR);
g.drawImage(srcImg.getScaledInstance(srcImg.getWidth(null), srcImg
.getHeight(null), Image.SCALE_SMOOTH), 0, 0, null);
if (null != degree) {
// 设置水印旋转
g.rotate(Math.toRadians(degree),
(double) buffImg.getWidth() / 2, (double) buffImg
.getHeight() / 2);
}
// 设置颜色
g.setColor(Color.red);
// 设置 Font
g.setFont(new Font("宋体", Font.BOLD, 30));
float alpha = 0.5f;
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP,
alpha));
// 第一参数->设置的内容，后面两个参数->文字在图片上的坐标位置(x,y) .
g.drawString(logoText, srcImg.getWidth(null)/4, srcImg.getHeight(null)/2);
g.dispose();
os = new FileOutputStream(targerPath);
// 生成图片
ImageIO.write(buffImg, "JPG", os);
System.out.println("图片完成添加文字印章。。。。。。");
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (null != is)
is.close();
} catch (Exception e) {
e.printStackTrace();
}
try {
if (null != os)
os.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
public static void main(String[] args) {
String srcImgPath = "d:/test/mypic.jpg";
String logoText = "[ 英达文字水印 http://wangyingda415.com ]";
String targerPath = "d:/test/my3.jpg";
String targerPath2 = "d:/test/my4.jpg";
// 给图片添加水印
ImageMarkLogoByText.markByText(logoText, srcImgPath, targerPath);
// 给图片添加水印,水印旋转-45
ImageMarkLogoByText.markByText(logoText, srcImgPath, targerPath2, -45);
}
}
