java监听全局组合键

1. jintellitype

• pom

  <!-- 不能注册多个组合键比如alt+abc -->
  <!-- https://mvnrepository.com/artifact/com.melloware/jintellitype -->
  <dependency>
  	<groupId>com.melloware</groupId>
  	<artifactId>jintellitype</artifactId>
  	<version>1.4.1</version>
  </dependency>
  

• 代码

  package com.hotkey.app;
  
  import cn.hutool.core.date.DateUtil;
  import com.melloware.jintellitype.JIntellitype;
  
  public class IntelApplication {
  	public static void main(String[] args) {
  
  		// 添加全局热键
  		JIntellitype instance = JIntellitype.getInstance();
  		instance.registerHotKey(0, JIntellitype.MOD_ALT + JIntellitype.MOD_SHIFT, 'B');
  		instance.registerHotKey(2, 20, 'B');
  		instance.registerHotKey(1, "CTRL+SHIFT+X+V");
  		instance.registerHotKey(3, "CTRL+SHIFT+ALT+WIN+DELETE+B");
  
  		// 添加热键监听器
  		instance.addHotKeyListener(hotkey -> {
  			System.out.println(DateUtil.now() + " Hotkey pressed: " + hotkey);
  			// 在这里处理你的逻辑
  		});
  
  	}
  }
  

• 缺点: 对于ctrl a b 按ctrl b也可以触发

2. jkeymaster

• pom

  <!-- https://mvnrepository.com/artifact/com.github.tulskiy/jkeymaster -->
  <dependency>
  	<groupId>com.github.tulskiy</groupId>
  	<artifactId>jkeymaster</artifactId>
  	<version>1.3</version>
  </dependency>
  
  <!-- https://mvnrepository.com/artifact/net.java.dev.jna/jna -->
  <dependency>
  	<groupId>net.java.dev.jna</groupId>
  	<artifactId>jna</artifactId>
  	<version>5.12.1</version>
  </dependency>
  

• 代码

  import com.tulskiy.keymaster.common.Provider;
  
  import javax.swing.*;
  import java.awt.event.InputEvent;
  import java.awt.event.KeyEvent;
  
  public class KeyApplication {
  
  	public static void main(String[] args) {
  		Provider provider = Provider.getCurrentProvider(true);
  
  		provider.register(
  				KeyStroke.getKeyStroke(KeyEvent.CTRL_MASK,
  						InputEvent.ALT_MASK),
  				x -> System.err.println(x));
  	}
  }
  

• 缺点: 对于+ = [ ]特殊按键识别不到; 不能注册类似ctrl a b会报错

3. jnativehook(推荐)

• pom

  <!-- https://mvnrepository.com/artifact/com.1stleg/jnativehook -->
  <dependency>
  	<groupId>com.1stleg</groupId>
  	<artifactId>jnativehook</artifactId>
  	<version>2.1.0</version>
  </dependency>
  

• 代码: https://gitee.com/codorld/hotkey-app
• 补充
  • 代码中防止程序再次启动使用的方法是端口占用, 但是测试过程中经常遇到各种问题, 导致启动两次, 可以使用文件锁来实现, 如果可以尽量使用绝对路径

    	/**
     * 通过.hotkey.lock的锁来判断是否有程序启动过
     * 去掉RandomAccessFile的放入try警告, 放进去执行完会自动释放
     *
     * @return true启动过, 不可再次启动, 反之false
     */
    @SuppressWarnings("all")
    private static boolean isAppAlreadyRunning() {
    	try {
    		File lockFile = new File(System.getenv("APPDATA") + "\\hotkey\\.hotkey.lock");
    		if (!lockFile.getParentFile().exists()) {
    			lockFile.getParentFile().mkdirs();
    		}
    		RandomAccessFile file = new RandomAccessFile(lockFile, "rw");
    		FileChannel channel = file.getChannel();
    		FileLock lock = channel.tryLock();
    		return lock == null;  // 如果锁获取失败，说明已经有实例在运行
    	} catch (Exception e) {
    		ByteArrayOutputStream baoStream = new ByteArrayOutputStream();
    		e.printStackTrace(new PrintStream(baoStream));
    		log.error(baoStream.toString());
    		return false;  // 处理异常情况，也可以选择抛出异常
    	}
    }
    

  • 代码中保存单次控制台日志的方法, 在任务计划中行不通, 通过批处理会有命令行弹窗, 体验不好
    • 可以考虑vsb文件, 无窗口方式运行
    • 或者将堆栈信息写入日志文件

      ByteArrayOutputStream baoStream = new ByteArrayOutputStream();
      e.printStackTrace(new PrintStream(baoStream));
      log.error(baoStream.toString());