java 模拟输入

package cn.net.haotuo;

import com.sun.jna.platform.win32.BaseTSD;
import com.sun.jna.platform.win32.User32;
import com.sun.jna.platform.win32.WinDef;
import com.sun.jna.platform.win32.WinUser;


/**
 * Created by lenovo on 2017/4/27.
 * 使用winID来获得窗口的类型和标题，然后发送消息或者其他操作
 */
public class POPO {
    public static void main(String[] args) {

        WinDef.HWND hwnd = User32.INSTANCE.FindWindow
                ("Notepad", null); // 第一个参数是Windows窗体的窗体类，第二个参数是窗体的标题。不熟悉windows编程的需要先找一些Windows窗体数据结构的知识来看看，还有windows消息循环处理，其他的东西不用看太多。
        if (hwnd == null) {
            System.out.println("Excel is not running");
        } else {
            User32.INSTANCE.ShowWindow(hwnd, 9);        // SW_RESTORE
            User32.INSTANCE.SetForegroundWindow(hwnd);   // bring to front
            User32.INSTANCE.SetFocus(hwnd);
            String username = "123";
            for (Character c : username.toCharArray()) {
                sendChar(c);
                sendCharPress(c);
                sendCharRelease(c);
            }


        }
    }

    static WinUser.INPUT input = new WinUser.INPUT();

    static void sendChar(char ch) {

        input.type = new WinDef.DWORD(WinUser.INPUT.INPUT_KEYBOARD);
        input.input.setType("ki"); // Because setting INPUT_INPUT_KEYBOARD is not enough: https://groups.google.com/d/msg/jna-users/NDBGwC1VZbU/cjYCQ1CjBwAJ
        input.input.ki.wScan = new WinDef.WORD(0);
        input.input.ki.time = new WinDef.DWORD(0);
        input.input.ki.dwExtraInfo = new BaseTSD.ULONG_PTR(0);
        // Press
        input.input.ki.wVk = new WinDef.WORD(Character.toUpperCase(ch)); // 0x41
        input.input.ki.dwFlags = new WinDef.DWORD(0);  // keydown
        User32.INSTANCE.SendInput(new WinDef.DWORD(1), (WinUser.INPUT[]) input.toArray(1), input.size());

        // Release
        input.input.ki.wVk = new WinDef.WORD(Character.toUpperCase(ch)); // 0x41
        input.input.ki.dwFlags = new WinDef.DWORD(2);  // keyup

        User32.INSTANCE.SendInput(new WinDef.DWORD(1), (WinUser.INPUT[]) input.toArray(1), input.size());

    }


    static void sendCharPress(char ch) {

        input.type = new WinDef.DWORD(WinUser.INPUT.INPUT_KEYBOARD);
        input.input.setType("ki"); // Because setting INPUT_INPUT_KEYBOARD is not enough: https://groups.google.com/d/msg/jna-users/NDBGwC1VZbU/cjYCQ1CjBwAJ
        input.input.ki.wScan = new WinDef.WORD(0);
        input.input.ki.time = new WinDef.DWORD(0);
        input.input.ki.dwExtraInfo = new BaseTSD.ULONG_PTR(0);
        // Press
        input.input.ki.wVk = new WinDef.WORD(Character.toUpperCase(ch)); // 0x41
        input.input.ki.dwFlags = new WinDef.DWORD(0);  // keydown
        User32.INSTANCE.SendInput(new WinDef.DWORD(1), (WinUser.INPUT[]) input.toArray(1), input.size());

    }

    static void sendCharRelease(char ch) {

        input.type = new WinDef.DWORD(WinUser.INPUT.INPUT_KEYBOARD);
        input.input.setType("ki"); // Because setting INPUT_INPUT_KEYBOARD is not enough: https://groups.google.com/d/msg/jna-users/NDBGwC1VZbU/cjYCQ1CjBwAJ
        input.input.ki.wScan = new WinDef.WORD(0);
        input.input.ki.time = new WinDef.DWORD(0);
        input.input.ki.dwExtraInfo = new BaseTSD.ULONG_PTR(0);


        // Release
        input.input.ki.wVk = new WinDef.WORD(Character.toUpperCase(ch)); // 0x41
        input.input.ki.dwFlags = new WinDef.DWORD(2);  // keyup

        User32.INSTANCE.SendInput(new WinDef.DWORD(1), (WinUser.INPUT[]) input.toArray(1), input.size());

    }
}