guicamera.java

实现简单的远程监控

package com.cheng;

import java.awt.image.BufferedImage;
import javax.imageio.*;
import java.awt.*;
import javax.imageio.stream.*;

public class GuiCamera {
    private String fileName;
    private String defaultName = "GuiCamera";
    static int serialNum = 0;
    private String imageFormat;
    private String defaultImageForamat = "png";
    private ImageOutputStream out;
    Dimension size = Toolkit.getDefaultToolkit().getScreenSize();

    public GuiCamera() {
        fileName = defaultName;
        imageFormat = defaultImageForamat;
    }

    public GuiCamera(String format) {

        imageFormat = format;
    }


    public BufferedImage snapShot() {
        try {
            BufferedImage screenshot =
                    (new Robot()).createScreenCapture(
                            new Rectangle(0, 0, (int) size.getWidth(),
                                          (int) size.getHeight()));
            serialNum++;

            String name = fileName + String.valueOf(serialNum) + "." +
                          imageFormat;

            return screenshot;
        } catch (Exception e) {
            e.getMessage();
            e.printStackTrace();
            return null;
        }
    }
}