1、对图片进行拷贝、加水印和黑白处理
- ImageCopy类
package com.spring.aop;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.*;
public class ImageCopy {
private static final Logger logger= LoggerFactory.getLogger(ImageCopy.class);
public void copyImage() throws IOException {
logger.info("开始讲图片从D盘复制到E盘...");
File srcFile=new File("D:/city.jpg");
File destFile=new File("E:/city1.jpg");
InputStream in = new FileInputStream(srcFile);
OutputStream out =new FileOutputStream(destFile);
byte[] bytes= new byte[(int) srcFile.length()];
int len;
while((len=in.read(bytes))!=-1){
out.write(bytes,0,len);
}
in.close();
out.close();
}
}
- ImageHandle类
package com.spring.aop;
import cn.hutool.core.util.ImageUtil;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
@Aspect
public class ImageHandler {
private static final Logger logger= LoggerFactory.getLogger(ImageCopy.class);
// 切点函数，必须为空
@Pointcut("execution(* com.spring.aop.ImageCopy.copyImage())")
public void handleImage(){
}
@Before(value="handleImage()")
public void pressTextOnImage()throws IOException {
logger.info("开始给图片添加水印...");
File srcFile=new File("D:/city.jpg");
// 通过字节输入流创建一个BufferImage对象
InputStream input=new FileInputStream(srcFile);
BufferedImage srcImg= ImageIO.read(input);
int width=srcImg.getWidth();
int height=srcImg.getHeight();
System.out.println("原图宽:"+width+",原图高："+height);
File destFile=new File("D:/city1.jpg");
Color color=new Color(250, 220, 107);
int size=20;
Font font =new Font("微软雅黑", Font.BOLD,size);
String text="Wuyou专用";
ImageUtil.pressText(srcFile,destFile,text,color,font,(width-text.length()*size)/2,height/2-size,1.0f);
}
@AfterReturning("handleImage()")
public void grayImage(){
logger.info("开始将图片转化为黑白");
File srcFile=new File("E:/city1.jpg");
File destFile=new File("E:/city2.jpg");
ImageUtil.gray(srcFile,destFile);
}
}
- ImageCopyApp类
package com.spring.aop;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import java.io.IOException;
public class ImageCopyApp {
public static void main(String[] args) {
ApplicationContext context=new ClassPathXmlApplicationContext("spring.xml");
ImageCopy imageCopy=context.getBean(ImageCopy.class);
try {
imageCopy.copyImage();
} catch (IOException e) {
e.printStackTrace();
}
}
}
-
运行结果
city.jpg
city1.jpg
city2.jpg
2、有趣的二维码
- erweima类
package com.spring.aop;
import cn.hutool.core.io.FileUtil;
import cn.hutool.extra.qrcode.QrCodeUtil;
import cn.hutool.extra.qrcode.QrConfig;
import java.awt.*;
public class erweima {
public static void main(String[] args) {
QrConfig config = new QrConfig(300, 300);
// 设置边距，既二维码和背景之间的边距
config.setMargin(3);
Color foreColor = new Color(250, 117, 8);
Color bgColor = new Color(200, 179, 47);
int foreColorRGB=foreColor.getRGB();
int bgColorRGB=bgColor.getRGB();
// 设置前景色，
config.setForeColor(foreColorRGB);
// 设置背景色
config.setBackColor(bgColorRGB);
config.setImg("d:/jianshu.jpg");
// 生成二维码到文件，也可以到流
QrCodeUtil.generate("//www.greatytc.com/u/15950825da52", config, FileUtil.file("d:/qrcode.jpg"));
}
}
-
运行结果(运行结果正确与否以能否扫出为准)
qrcode.jpg
