维帝博客 - 使用Java实现全局键盘和鼠标监听

普通的Java Swing组件都是必须要在java程序内才能监听到键盘和鼠标事件，全局鼠标键盘监听可以不必在java程序焦点下对键盘和鼠标进行监听

创建Maven，引入相对应的工程

```xml

<dependency>
    <groupId>com.1stleg</groupId>
    <artifactId>jnativehook</artifactId>
    <version>2.1.0</version>
</dependency>
```

以下代码都是来自GitHub中演示的代码

[kwhat的JNativeHook](https://github.com/kwhat/jnativehook "kwhat的JNativeHook")

------------

## Global Keyboard Listener

```java
import com.github.kwhat.jnativehook.GlobalScreen;
import com.github.kwhat.jnativehook.NativeHookException;
import com.github.kwhat.jnativehook.keyboard.NativeKeyEvent;
import com.github.kwhat.jnativehook.keyboard.NativeKeyListener;

public class GlobalKeyListenerExample implements NativeKeyListener {
  public void nativeKeyPressed(NativeKeyEvent e) {
    System.out.println("Key Pressed: " + NativeKeyEvent.getKeyText(e.getKeyCode()));

if (e.getKeyCode() == NativeKeyEvent.VC_ESCAPE) {
                try {
                    GlobalScreen.unregisterNativeHook();
                } catch (NativeHookException nativeHookException) {
                    nativeHookException.printStackTrace();
                }
          }
  }

public void nativeKeyReleased(NativeKeyEvent e) {
    System.out.println("Key Released: " + NativeKeyEvent.getKeyText(e.getKeyCode()));
  }

public void nativeKeyTyped(NativeKeyEvent e) {
    System.out.println("Key Typed: " + e.getKeyText(e.getKeyCode()));
  }

public static void main(String[] args) {
    try {
      GlobalScreen.registerNativeHook();
    }
    catch (NativeHookException ex) {
      System.err.println("There was a problem registering the native hook.");
      System.err.println(ex.getMessage());

System.exit(1);
    }

GlobalScreen.addNativeKeyListener(new GlobalKeyListenerExample());
  }
}

```

## Global Mouse Listener

```java
import GlobalScreen;
import NativeHookException;
import NativeMouseEvent;
import NativeMouseInputListener;

public class GlobalMouseListenerExample implements NativeMouseInputListener {
  public void nativeMouseClicked(NativeMouseEvent e) {
    System.out.println("Mouse Clicked: " + e.getClickCount());
  }

public void nativeMousePressed(NativeMouseEvent e) {
    System.out.println("Mouse Pressed: " + e.getButton());
  }

public void nativeMouseReleased(NativeMouseEvent e) {
    System.out.println("Mouse Released: " + e.getButton());
  }

public void nativeMouseMoved(NativeMouseEvent e) {
    System.out.println("Mouse Moved: " + e.getX() + ", " + e.getY());
  }

public void nativeMouseDragged(NativeMouseEvent e) {
    System.out.println("Mouse Dragged: " + e.getX() + ", " + e.getY());
  }

System.exit(1);
    }

// Construct the example object.
    GlobalMouseListenerExample example = new GlobalMouseListenerExample();

// Add the appropriate listeners.
    GlobalScreen.addNativeMouseListener(example);
    GlobalScreen.addNativeMouseMotionListener(example);
  }
}

```

## Global Mouse Wheel Listener

```java
import GlobalScreen;
import NativeHookException;
import NativeMouseWheelEvent;
import NativeMouseWheelListener;

public class GlobalMouseWheelListenerExample implements NativeMouseWheelListener {
  public void nativeMouseWheelMoved(NativeMouseWheelEvent e) {
    System.out.println("Mosue Wheel Moved: " + e.getWheelRotation());
  }

System.exit(1);
    }

GlobalScreen.addNativeMouseWheelListener(new GlobalMouseWheelListenerExample());
  }
}

```

**如果打包有问题的话降版本至1.0.21**