java截图_java实现截图功能
package Jietu;
import java.awt.Dimension;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.io.File;
import javax.imageio.ImageIO;
public class CameraTest {
private String filePreStr; // 默认前缀(选择存储路径例如： D：\)
private String imageFormat; // 图像文件的格式
Dimension d = Toolkit.getDefaultToolkit().getScreenSize(); //获取全屏幕的宽高尺寸等数据
public CameraTest() {
filePreStr = defName;
imageFormat = defaultImageFormat;
}
public CameraTest(String s, String format) {
filePreStr = s;
imageFormat = format;
}
public void snapShot() {
try {
// *** 核心代码 *** 拷贝屏幕到一个BufferedImage对象screenshot
BufferedImage screenshot = (new Robot()).createScreenCapture(new Rectangle(0, 0, (int) d.getWidth(), (int) d.getHeight()));
serialNum++;
// 根据文件前缀变量和文件格式变量，自动生成文件名
String name = filePreStr + String.valueOf(serialNum) + "." + imageFormat;
File f = new File(name);
System.out.print("Save File " + name);
// 将screenshot对象写入图像文件
ImageIO.write(screenshot, imageFormat, f);
System.out.print("..Finished! ");
} catch (Exception ex) {
System.out.println(ex);
}
}
public static void main(String[] args) {
CameraTest cam = new CameraTest("d:\Hello", "png");//
cam.snapShot();
}
}
核心代码为
snapShot方法中的相关逻辑
package Jietu; import java.awt.Dimension; import java.awt.Rectangle; import java.awt.Robot; import java.awt.Toolkit; import java.awt.image.BufferedImage; import java.io.File; import javax.imageio.ImageIO; public class CameraTest { private String filePreStr; // 默认前缀(选择存储路径例如： D：\) private String imageFormat; // 图像文件的格式 Dimension d = Toolkit.getDefaultToolkit().getScreenSize(); //获取全屏幕的宽高尺寸等数据 public CameraTest() { filePreStr = defName; imageFormat = defaultImageFormat; } public CameraTest(String s, String format) { filePreStr = s; imageFormat = format; } public void snapShot() { try { // *** 核心代码 *** 拷贝屏幕到一个BufferedImage对象screenshot BufferedImage screenshot = (new Robot()).createScreenCapture(new Rectangle(0, 0, (int) d.getWidth(), (int) d.getHeight())); serialNum++; // 根据文件前缀变量和文件格式变量，自动生成文件名 String name = filePreStr + String.valueOf(serialNum) + "." + imageFormat; File f = new File(name); System.out.print("Save File " + name); // 将screenshot对象写入图像文件 ImageIO.write(screenshot, imageFormat, f); System.out.print("..Finished! "); } catch (Exception ex) { System.out.println(ex); } } public static void main(String[] args) { CameraTest cam = new CameraTest("d:\Hello", "png");// cam.snapShot(); } } 核心代码为 snapShot方法中的相关逻辑