Java防锁屏小程序

为防止系统桌面自动锁屏，只需打成jar包，写个批处理程序start.bat，双击执行保持dos窗口执行即可，无其他影响。

程序设计为每30秒动一次鼠标，可根据需要调整。

附代码：

 package main;

 import java.awt.AWTException;
 import java.awt.Dimension;
 import java.awt.MouseInfo;
 import java.awt.Point;
 import java.awt.PointerInfo;
 import java.awt.Robot;
 import java.awt.Toolkit;

 public class Main {
     public static void main(String[] args) {
         Robot robot = null;
         try {
             robot = new Robot();
         } catch (AWTException e1) {
             e1.printStackTrace();
         }
         Point pos = MouseInfo.getPointerInfo().getLocation();

         int last_x = pos.x;
         int last_y = pos.y;

         int mov = 1;

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

         System.out.println("Screen size: " + screenSize.getWidth() + "*" + screenSize.getHeight());
         while (true) {
             System.out.println(pos.x + " " + pos.y);
             PointerInfo pos_info = MouseInfo.getPointerInfo();
             if (pos_info == null) {
                 System.out.println("Get location fail!");
                 try {
                     Thread.sleep(30000L);
                 } catch (InterruptedException e) {
                     e.printStackTrace();
                 }

             } else {
                 pos = pos_info.getLocation();

                 if ((pos.x == last_x) && (pos.y == last_y)) {
                     System.out.println("moving!");

                     if (pos.y <= 0) {
                         mov = 1;
                     }
                     if (pos.y > 0) {
                         mov = -1;
                     }
                     robot.mouseMove(pos.x, pos.y + mov);

                     robot.mouseMove(pos.x, pos.y);
                 }
                 pos_info = MouseInfo.getPointerInfo();
                 if (pos_info == null) {
                     System.out.println("Get location fail!");
                     try {
                         Thread.sleep(30000L);
                     } catch (InterruptedException e) {
                         e.printStackTrace();
                     }

                 } else {
                     pos = pos_info.getLocation();

                     last_x = pos.x;
                     last_y = pos.y;
                     try {
                         Thread.sleep(30000L);
                     } catch (InterruptedException e) {
                         e.printStackTrace();
                     }
                 }
             }
         }
     }
 }

将这个Main类打成jar包，此处jar包名为MouseMove.jar；与jar包同目录位置写个.bat类型文件，文件内容如下：

@echo off
java -jar MouseMove.jar

双击执行即可。