Java图片水印处理-优快云博客

java写的水印字和水印图

package image;
import java.io.IOException;
import java.awt.Graphics;
import java.awt.*;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.awt.image.ImageProducer;
import java.io.File;
import java.io.FileOutputStream;
import javax.imageio.ImageIO;
import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGImageEncoder;
import com.sun.jimi.core.Jimi;
import com.sun.jimi.core.JimiException;
import com.sun.jimi.core.JimiWriter;
import com.sun.jimi.core.options.JPGOptions;
/**
*
* @author myjava_024
* java做水印,字体和图片,调节透明度
*/
public class ImageOperation {
/**
* 将任何格式的图片转换成JPG图片 source原图片路径 dest 转换后图片的路径
*/
public void toReduce(String source, String dest)
{
try {
JPGOptions options = new JPGOptions();
options.setQuality(100);
// 图片格式在jimi的解码格式范围内
ImageProducer image = Jimi.getImageProducer(source);
// 图片编码
JimiWriter writer = Jimi.createJimiWriter(dest);
writer.setSource(image);
// 对输出文件的属性进行相关的设置，每种格式的属性都不一样
writer.setOptions(options);
writer.putImage(dest);
} catch (JimiException je) {
System.err.println("Error: " + je);
je.printStackTrace();
}
}
/**
* 实现对图片的抽取缩略并控制生成图的大小
* oldfile原图片路径 newfile缩略后的图片路径 wideths 缩略后图片的宽 heights缩略后图片的高
*/
public void changDimension(String oldfile, String newfile, int wideths,
int heights) throws JimiException, IOException
{
String temp = newfile;
File inputfile = null;
this.toReduce(oldfile, temp);
// 读入文件
inputfile = new File(temp);
// 构造Image对象
Image src = ImageIO.read(inputfile);
// double wideth = (double) src.getWidth(null); // 得到源图宽
// double height = (double) src.getHeight(null); // 得到源图长
int iWideth = wideths;
int iHeight = heights;
BufferedImage tag = null;
try {
tag = new BufferedImage(iWideth, iHeight,
BufferedImage.TYPE_INT_RGB);
// 绘制缩小后的图
tag.getGraphics().drawImage(src, 0, 0, iWideth, iHeight, null);
JimiWriter writer = Jimi.createJimiWriter(newfile);
writer.setSource(tag);
writer.putImage(newfile);
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* 给图片添加文字 oldfile newfile就不用多说了 text 就是给图片加的文字
*/
public void Imagefont(String oldfile, String newfile, String text)
{
Image img;
String filename = oldfile.substring(oldfile.lastIndexOf(".") + 1);
String temp = newfile;
try {
if (!filename.equals("jpg")) {
this.toReduce(oldfile, newfile);
img = ImageIO.read(new File(temp));
} else {
img = ImageIO.read(new File(oldfile));
}
int width = img.getWidth(null);
int height = img.getHeight(null);
BufferedImage image = new BufferedImage(width, height,
BufferedImage.TYPE_INT_RGB);
Graphics g = image.createGraphics();
g.drawImage(img, 0, 0, width, height, null);
g.setColor(Color.red);
g.setFont(new Font("Courier", Font.HANGING_BASELINE, 40));
g.drawString(text, width - 360, height - 72);
g.dispose();
FileOutputStream os = new FileOutputStream(temp);
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(os);
encoder.encode(image);
} catch (Exception e) {
e.getMessage();
}
}
/**
* 给图片添加水印，并控制水印图片的位置及透明度
* oldfile newfile我也不说了 syoldfile 要添加的水印图片的路径 t 水印图品添加的位置 to 水印图片的透明度
*/
public void Imagese(String oldfile, String newfile, String syoldfile,
int t, float to)
{
//文件类型
String filename = oldfile.substring(oldfile.lastIndexOf(".") + 1);
System.out.println(filename);
Image img;
String temp = newfile;
float alpha = to;
try {
if (!filename.equals("jpg")) {
toReduce(oldfile, newfile);
img = ImageIO.read(new File(temp));
System.out.println("其他类型图片创建生成水印的图片");
} else {
img = ImageIO.read(new File(oldfile));
}
int width = img.getWidth(null);
int height = img.getHeight(null);
int ws = width / 3;
int hs = height / 3;
BufferedImage image = new BufferedImage(width, height,
BufferedImage.TYPE_INT_RGB);
Graphics2D g = image.createGraphics();
g.drawImage(img, 0, 0, width, height, null);
Image logo = ImageIO.read(new File(syoldfile));
int lw = logo.getWidth(null);
int lh = logo.getHeight(null);
//设置图片透明度
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP,
alpha));
g.drawImage(logo, null, null);
switch (t) {
case 1:
g.drawImage(logo, 0, 0, lw, lh, null);
System.out.println("布局一");
break;
case 2:
g.drawImage(logo, ws, 0, lw, lh, null);
System.out.println("布局二");
break;
case 3:
g.drawImage(logo, 2 * ws, 0, lw, lh, null);
System.out.println("布局三");
break;
case 4:
g.drawImage(logo, 0, hs, lw, lh, null);
System.out.println("布局四");
break;
case 5:
g.drawImage(logo, ws, hs, lw, lh, null);
System.out.println("布局五");
break;
case 6:
g.drawImage(logo, 2 * ws, hs, lw, lh, null);
System.out.println("布局六");
break;
case 7:
g.drawImage(logo, 0, 2 * hs, lw, lh, null);
System.out.println("布局七");
break;
case 8:
g.drawImage(logo, ws, 2 * hs, lw, lh, null);
System.out.println("布局八");
break;
case 9:
g.drawImage(logo, 2 * ws, 2 * hs, lw, lh, null);
System.out.println("布局九");
break;
default:
break;
}
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER));
g.dispose();
//生成图片
FileOutputStream oss = new FileOutputStream(temp);
JPEGImageEncoder encoders = JPEGCodec.createJPEGEncoder(oss);
encoders.encode(image);
} catch (Exception e) {
e.getMessage();
e.printStackTrace();
}
}
public static void main(String [] args)
{
ImageOperation test = new ImageOperation();
//alpha表示透明度，alpha 必须是范围 [0.0, 1.0] 之内（包含边界值）的一个浮点数字
float alpha = 0.2f;
//生成水印图
test.Imagese("d:/001.svg", "d:/003.svg", "d:/002.svg", 1, alpha);
/*test.Imagese("d:/001.jpg", "d:/aa/001.jpg", "d:/002.jpg", 1, alpha);
test.Imagese("d:/001.jpg", "d:/aa/002.jpg", "d:/002.jpg", 2, alpha);
test.Imagese("d:/001.jpg", "d:/aa/003.jpg", "d:/002.jpg", 3, alpha);
test.Imagese("d:/001.jpg", "d:/aa/004.jpg", "d:/002.jpg", 4, alpha);
test.Imagese("d:/001.jpg", "d:/aa/005.jpg", "d:/002.jpg", 5, alpha);
test.Imagese("d:/001.jpg", "d:/aa/006.jpg", "d:/002.jpg", 6, alpha);
test.Imagese("d:/001.jpg", "d:/aa/007.jpg", "d:/002.jpg", 7, alpha);
test.Imagese("d:/001.jpg", "d:/aa/008.jpg", "d:/002.jpg", 8, alpha);
test.Imagese("d:/001.jpg", "d:/aa/009.jpg", "d:/002.jpg", 9, alpha); */
}
}

这里面需要使用个JimiProClasses.jar这个包，我把包传资源上了

java做的水印图