CentOS6.5 定期获取目标机器屏幕截图

1、添加计划任务

crontab -l

*/1 * * * * sh /home/aaron/run.sh >> /home/aaron/cron.log 2>&1

2、cat /home/aaron/run.sh

#!/bin/sh  

#cd /home/aaron
#CLASSPATH=$CLASSPATH:/home/aaron/.gradle/cache/com.google.zxing/core/jars/core-3.2.1.jar 
#CLASSPATH=$CLASSPATH:/home/aaron/.gradle/cache/com.google.zxing/javase/jars/javase-3.2.1.jar
#CLASSPATH=$CLASSPATH:/home/aaron/.gradle/cache/commons-lang/commons-lang/jars/commons-lang-2.6.jar
#CLASSPATH=$CLASSPATH:/home/aaron/.gradle/cache/joda-time/joda-time/jars/joda-time-1.6.2.jar
  
#export CLASSPATH  
#export DISPLAY=:0
#java=/home/aaron/soft/jdk1.8.0/bin/java  
#$java com/aaron/my/resources/Test  

imageDir=/tmp/images

pre_check(){  
  if [ ! -d "$imageDir" ]; then 
     mkdir -p "$imageDir" 
  fi 
}

pre_check

#commandStr="/tmp/tool/client.sh;cd $imageDir;ls"

#ssh 目标机器host  $commandStr > t.txt

#for  x  in  $(cat t.txt)
#do     
#scp user@host:/tmp/images/$x /tmp/images
#ssh 目标机器host "rm $imageDir/$x"
#done 

3、以下放到目标机器

cat /tmp/tool/client.sh

#!/bin/sh  

imageDir=/tmp/images
baseDir=$(cd $(dirname $0);pwd)

pre_check(){  
  if [ ! -d "$imageDir" ]; then 
     mkdir -p "$imageDir" 
  fi 
}

pre_check

CLASSPATH=$CLASSPATH:$baseDir/core-3.2.1.jar 
CLASSPATH=$CLASSPATH:$baseDir/javase-3.2.1.jar
CLASSPATH=$CLASSPATH:$baseDir/commons-lang-2.6.jar
CLASSPATH=$CLASSPATH:$baseDir/joda-time-1.6.2.jar
  
export CLASSPATH  
export DISPLAY=:0
cd $baseDir
java=/home/aaron/soft/jdk1.8.0/bin/java  
$java com/aaron/my/resources/Test  

cat Test.java 参考snapshot方法

package com.aaron.my.resources;

import java.awt.*;

import java.awt.Dimension;

import java.awt.image.BufferedImage;

import java.io.File;

import java.io.IOException;

import java.nio.file.FileSystems;

import java.nio.file.Path;

import java.util.HashMap;

import java.util.Map;

import javax.imageio.ImageIO;



import com.google.gson.Gson;

import com.google.zxing.*;

import com.google.zxing.client.j2se.BufferedImageLuminanceSource;

import com.google.zxing.client.j2se.MatrixToImageWriter;

import com.google.zxing.common.BitMatrix;

import com.google.zxing.common.HybridBinarizer;

import org.apache.commons.codec.binary.Base64;

import org.apache.commons.lang.StringUtils;

import org.joda.time.DateTime;



public class Test {

    private static final String fromDir = "/tmp/images";

    private static final String toDir = "/mnt/shared/processedQRCodes";

    private static final String PNG = ".png";

    private static final int PNG_SIZE_HEIGHT = 200;

    private static final int PNG_SIZE_WIDTH = 200;



    public static void main(String[] args) {

        snapshot();

//        File dir = new File(fromDir);

//        if(dir.exists() && dir.isDirectory()){

//            File[] files = dir.listFiles();

//            for(File f:files){

//                if(f.isFile()&&f.getName().toLowerCase().endsWith(PNG)){

//                    String res = decode(f);

////                    System.out.println(res);

//                    if(StringUtils.isNotBlank(res)){

//                        // move to processed dir

//                        boolean moved = move(f,new File(toDir+File.separator+f.getName().substring(0,f.getName().indexOf("."))+"_"+res+PNG));

//                        System.out.println(moved==true?"Moved to processed dir.":"Can't move file: "+f.getAbsolutePath());

//                    }

//                }

//            }

//        }

        String res = decode(new File("/mnt/shared/qrcodes/b.png"));

//        encode("http://baike.baidu.com/link?url=BP7l08ZZZa7HBLL0g4RCuVsN3BlNbuokYRKCuUk8ZexPDjxSVNMXQq_08WI1xz5EUAjVrce4qgSisos9K-mq-q");

    }



    private static boolean  move(File f,File toDir){

        return f.renameTo(toDir);

    }



    /**

     * 解析图像

     */

    public static String decode(File file) {

        BufferedImage image;

        String res = null;

        try {

            image = ImageIO.read(file);

            LuminanceSource source = new BufferedImageLuminanceSource(image);

            Binarizer binarizer = new HybridBinarizer(source);

            BinaryBitmap binaryBitmap = new BinaryBitmap(binarizer);

            Map<DecodeHintType, Object> hints = new HashMap<DecodeHintType, Object>();

//            hints.put(DecodeHintType.CHARACTER_SET, "UTF-8");

            Result result = new MultiFormatReader().decode(binaryBitmap, hints);// 对图像进行解码

            String resultStr = result.getText();

//            System.out.println(resultStr);

            String t = resultStr.substring(resultStr.indexOf("?")+3,resultStr.length());

            String base64 = new String(Base64.decodeBase64(t));

//            System.out.println(t);

            System.out.print(base64+"   --->   ");

            DecodeResult decodeResult = new Gson().fromJson(base64,DecodeResult.class);

            res = decodeResult.getD();

        } catch (Exception e) {

            // move to processed dir

            boolean moved = move(file,new File(toDir+File.separator+file.getName().substring(0,file.getName().indexOf("."))+(res==null?"":"_"+res)+PNG));

            System.out.println(moved==true?"Exception happened and moved to processed dir.":"Can't move file: "+file.getAbsolutePath());

//            e.printStackTrace();

        }

        return res;

    }



    public static void snapshot(){

        String fileName = new DateTime().toString("yyyyMMddHHmmss");

        Dimension screensize   =   Toolkit.getDefaultToolkit().getScreenSize();

        double h = screensize.getHeight();

        double w = screensize.getWidth();

        try {

            Robot robot = new Robot();

//            BufferedImage bi=robot.createScreenCapture(new Rectangle(Double.valueOf((w-PNG_SIZE_WIDTH)/2).intValue(),Double.valueOf((h-PNG_SIZE_HEIGHT)/2).intValue(),PNG_SIZE_WIDTH,PNG_SIZE_HEIGHT)); // 根据指定的区域抓取屏幕

            BufferedImage bi=robot.createScreenCapture(new Rectangle(screensize)); // 根据指定的区域抓取屏幕

            ImageIO.write(bi, "png", new File(fromDir+File.separator+fileName+PNG));

        } catch (AWTException e) {

            e.printStackTrace();

        } catch (IOException e) {

            e.printStackTrace();

        }

    }



    public static void encode(String content){

        int width = 400; // 图像宽度

        int height = 400; // 图像高度

        String format = "png";// 图像类型

        Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>();

        hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");

        try{

            BitMatrix bitMatrix = new MultiFormatWriter().encode(content,

                    BarcodeFormat.QR_CODE, width, height, hints);// 生成矩阵

            Path path = FileSystems.getDefault().getPath(toDir, "code.png");

            MatrixToImageWriter.writeToPath(bitMatrix, format, path);// 输出图像

        }catch(Exception e){

            e.printStackTrace();

        }

    }

}



class DecodeResult{

    private String a;

    private String b;

    private String c;

    private String d;

    private String v;



    public String getA() {

        return a;

    }



    public void setA(String a) {

        this.a = a;

    }



    public String getB() {

        return b;

    }



    public void setB(String b) {

        this.b = b;

    }



    public String getC() {

        return c;

    }



    public void setC(String c) {

        this.c = c;

    }



    public String getD() {

        return d;

    }



    public void setD(String d) {

        this.d = d;

    }



    public String getV() {

        return v;

    }



    public void setV(String v) {

        this.v = v;

    }

}