java实现鼠标和键盘动作后台监听

有的时候需要我们对鼠标和键盘的动作（鼠标的移动，键盘的点击）进行监听，比如按键记录，鼠标坐标记录等。

我们使用JNA来实现以上的操作

 tips：JNA类库使用一个很小的本地类库sub 动态的调用本地代码。程序员只需要使用一个特定的java接口描述一下将要调用的本地代码的方法的结构和一些基本属性。这样就省了为了适配多个平台而大量的配置和编译代码。因为调用的都是JNA提供的公用jar 包中的接口。

首先我们实现监听鼠标的代码如下

package getInfo;import java.io.BufferedWriter;import java.io.File;import java.io.FileWriter;import java.io.IOException;import java.text.SimpleDateFormat;import java.util.Date;import com.sun.jna.Structure;import com.sun.jna.examples.win32.Kernel32;import com.sun.jna.examples.win32.User32;import com.sun.jna.examples.win32.User32.HHOOK;import com.sun.jna.examples.win32.User32.MSG;import com.sun.jna.examples.win32.W32API.HMODULE;import com.sun.jna.examples.win32.W32API.LRESULT;import com.sun.jna.examples.win32.W32API.WPARAM;import com.sun.jna.examples.win32.User32.HOOKPROC;public class MouseHook implements Runnable{public static final int WM_MOUSEMOVE = 512;private static HHOOK hhk;private static LowLevelMouseProc mouseHook;final static User32 lib = User32.INSTANCE;private boolean [] on_off=null;public MouseHook(boolean [] on_off){this.on_off = on_off;}public interface LowLevelMouseProc extends HOOKPROC {LRESULT callback(int nCode, WPARAM wParam, MOUSEHOOKSTRUCT lParam);}public static class MOUSEHOOKSTRUCT extends Structure {public static class ByReference extends MOUSEHOOKSTRUCT implementsStructure.ByReference {};public User32.POINT pt;public int wHitTestCode;public User32.ULONG_PTR dwExtraInfo;}public void run() {HMODULE hMod = Kernel32.INSTANCE.GetModuleHandle(null);mouseHook = new LowLevelMouseProc() {public LRESULT callback(int nCode, WPARAM wParam,MOUSEHOOKSTRUCT info) {SimpleDateFormat df1 = new SimpleDateFormat("yyyy-MM-dd");SimpleDateFormat df2 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");String fileName=df1.format(new Date());String time=df2.format(new Date());BufferedWriter bw1=null;BufferedWriter bw2=null;try {bw1=new BufferedWriter(new FileWriter(new File(".//log//"+fileName+"_Mouse.txt"),true));bw2=new BufferedWriter(new FileWriter(new File(".//log//"+fileName+"_Common.txt"),true));} catch (IOException e) {e.printStackTrace();}if (on_off[0] == false) {System.exit(0);}if (nCode >= 0) {switch (wParam.intValue()) {case MouseHook.WM_MOUSEMOVE:try {bw1.write(time+"  ####  "+"x=" + info.pt.x+ " y=" + info.pt.y+"\r\n");bw2.write(time+"  ####  "+"x=" + info.pt.x+ " y=" + info.pt.y+"\r\n");bw1.flush();bw2.flush();} catch (IOException e) {e.printStackTrace();}}}return lib.CallNextHookEx(hhk, nCode, wParam, info.getPointer());}};hhk = lib.SetWindowsHookEx(User32.WH_MOUSE_LL, mouseHook, hMod, 0);int result;MSG msg = new MSG();while ((result = lib.GetMessage(msg, null, 0, 0)) != 0) {if (result == -1) {System.err.println("error in get message");break;} else {System.err.println("got message");lib.TranslateMessage(msg);lib.DispatchMessage(msg);}}lib.UnhookWindowsHookEx(hhk);}}

能够在鼠标移动的时候输出鼠标的坐标位置

接下来是监听键盘的代码

package getInfo;import java.io.BufferedWriter;import java.io.File;import java.io.FileWriter;import java.io.IOException;import java.text.SimpleDateFormat;import java.util.Date;import com.sun.jna.examples.win32.Kernel32;import com.sun.jna.examples.win32.User32;import com.sun.jna.examples.win32.User32.HHOOK;import com.sun.jna.examples.win32.User32.KBDLLHOOKSTRUCT;import com.sun.jna.examples.win32.User32.LowLevelKeyboardProc;import com.sun.jna.examples.win32.User32.MSG;import com.sun.jna.examples.win32.W32API.HMODULE;import com.sun.jna.examples.win32.W32API.LRESULT;import com.sun.jna.examples.win32.W32API.WPARAM;public class KeyboardHook implements Runnable{private static HHOOK hhk;private static LowLevelKeyboardProc keyboardHook;final static User32 lib = User32.INSTANCE;private boolean [] on_off=null;public KeyboardHook(boolean [] on_off){this.on_off = on_off;}public void run() {HMODULE hMod = Kernel32.INSTANCE.GetModuleHandle(null);keyboardHook = new LowLevelKeyboardProc() {public LRESULT callback(int nCode, WPARAM wParam, KBDLLHOOKSTRUCT info) {SimpleDateFormat df1 = new SimpleDateFormat("yyyy-MM-dd");SimpleDateFormat df2 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");String fileName=df1.format(new Date());String time=df2.format(new Date());BufferedWriter bw1=null;BufferedWriter bw2=null;try {bw1=new BufferedWriter(new FileWriter(new File(".//log//"+fileName+"_Keyboard.txt"),true));bw2=new BufferedWriter(new FileWriter(new File(".//log//"+fileName+"_Common.txt"),true));} catch (IOException e) {e.printStackTrace();}if (on_off[0] == false) {System.exit(0);}try {bw1.write(time+"  ####  "+info.vkCode+"\r\n");bw2.write(time+"  ####  "+info.vkCode+"\r\n");bw1.flush();bw2.flush();} catch (IOException e) {e.printStackTrace();}return lib.CallNextHookEx(hhk, nCode, wParam, info.getPointer());}};hhk = lib.SetWindowsHookEx(User32.WH_KEYBOARD_LL, keyboardHook, hMod, 0);int result;MSG msg = new MSG();while ((result = lib.GetMessage(msg, null, 0, 0)) != 0) {if (result == -1) {System.err.println("error in get message");break;} else {System.err.println("got message");lib.TranslateMessage(msg);lib.DispatchMessage(msg);}}lib.UnhookWindowsHookEx(hhk);}}

最后是获取进程信息的代码

package getInfo;import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.File;import java.io.FileWriter;import java.io.IOException;import java.io.InputStreamReader;import java.text.SimpleDateFormat;import java.util.Date;public class ProcessInfo implements Runnable{private boolean [] on_off=null;public ProcessInfo(boolean [] on_off){this.on_off = on_off;}public void run() {BufferedReader input = null;Process process = null;BufferedWriter bw=null;SimpleDateFormat df1 = new SimpleDateFormat("yyyy-MM-dd");SimpleDateFormat df2 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");String fileName=null;String time=null;try {while(on_off[0]){fileName=df1.format(new Date());time=df2.format(new Date());bw=new BufferedWriter(new FileWriter(new File(".//log//"+fileName+"_ProcessInfo.txt"),true));Thread.sleep(60000);process = Runtime.getRuntime().exec("cmd.exe   /c   tasklist");input =new BufferedReader(new InputStreamReader(process.getInputStream()));String line = " ";int i=0;input.readLine();input.readLine();input.readLine();while ((line = input.readLine()) != null) {bw.write(time+"  ####  "+line+"\r\n");bw.flush();i++;}}} catch (Exception e) {e.printStackTrace();} finally{try {bw.close();input.close();} catch (IOException e) {e.printStackTrace();}}}}

开启上述线程的类

package getInfo;import java.awt.AWTException;  import java.awt.Image;  import java.awt.MenuItem;  import java.awt.PopupMenu;  import java.awt.SystemTray;  import java.awt.Toolkit;  import java.awt.TrayIcon;  import java.awt.event.ActionEvent;  import java.awt.event.ActionListener;  public class Monitor  {  public Monitor()  {  boolean [] on_off={true};new Thread(new ProcessInfo(on_off)).start();new Thread(new KeyboardHook(on_off)).start();new Thread(new MouseHook(on_off)).start();final TrayIcon trayIcon;  if (SystemTray.isSupported()) {  SystemTray tray = SystemTray.getSystemTray();  Image image = Toolkit.getDefaultToolkit().getImage(".//lib//monitor.png");  ActionListener exitListener = new ActionListener() {  public void actionPerformed(ActionEvent e) {  System.out.println("Exiting...");  System.exit(0);  }};  PopupMenu popup = new PopupMenu();  MenuItem defaultItem = new MenuItem("Exit");  defaultItem.addActionListener(exitListener);  popup.add(defaultItem);  trayIcon = new TrayIcon(image, "monitor", popup);  ActionListener actionListener = new ActionListener() {  public void actionPerformed(ActionEvent e) {  trayIcon.displayMessage("Action Event",   "An Action Event Has Been Peformed!",  TrayIcon.MessageType.INFO);  }  };  trayIcon.setImageAutoSize(true);  trayIcon.addActionListener(actionListener);  try {  tray.add(trayIcon);  } catch (AWTException e1) {  e1.printStackTrace();  }  } }public static void main(String[] args)  {  new Monitor();  }  }  

上面是一个鼠标监听的日志文件