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 defName = "cameraImg"; // 默认截图名称 static int serialNum = 0; //截图名称后面的数字累加 private String imageFormat; // 图像文件的格式 private String defaultImageFormat = "png"; //截图后缀 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!\n"); } catch (Exception ex) { System.out.println(ex); } } // 运行之后,即可将全屏幕截图保存到指定的目录下面
// 配合前端页面上面的选择尺寸等逻辑,传到后台,即可实现自由选择截图区域和大小的截图
public static void main(String[] args) { CameraTest cam = new CameraTest("d:\\Hello", "png");// cam.snapShot(); } }
以上代码即可实现将全屏幕截图保存到指定目录下
核心代码为
snapShot方法中的相关逻辑