功能描述：java調用exe，根據檢測到的盤符進行U盤彈出。? ?

?exe地址：https://download.csdn.net/download/weixin_38959210/14503393

cmd調用,模擬要彈出的U盤盤符為E

自動彈出U盤.exe E

java調用,模擬要彈出的U盤盤符為E

public static void main(String[] args) throws IOException {String[] cmd = {"D:\\自動彈出U盤.exe","E"};Runtime.getRuntime().exec(cmd);}

C語言寫的執行文件?也就是上面的exe 。推薦簡單的代碼編寫工具Dev-C++?以及?CodeBlocks

#include <windows.h> #include <dbt.h> #include <stdio.h> #include <math.h>#define LOCK_TIMEOUT 10000 // 10 Seconds #define LOCK_RETRIES 20 /*************** Function： UninstallUsb Description： 根據盤符將usb設備彈出 Parameters： discId 要彈出的盤符 Returns： -1 失敗 0 成功 ***************/ static int UninstallUsb(char *discId) {DWORD accessMode = GENERIC_WRITE | GENERIC_READ;DWORD shareMode = FILE_SHARE_READ | FILE_SHARE_WRITE;HANDLE hDevice;long bResult = 0;DWORD retu = 0;DWORD dwError;DWORD dwBytesReturned;DWORD dwSleepAmount;int nTryCount;char szDriv[10];if(discId == NULL){return 0;}dwSleepAmount = LOCK_TIMEOUT/LOCK_RETRIES;sprintf(szDriv,"\\\\.\\%s:",discId);hDevice = CreateFile(szDriv,accessMode,shareMode,NULL,OPEN_EXISTING,0,NULL);if(hDevice == INVALID_HANDLE_VALUE){printf("uninstallusb createfile failed error:%d\n",GetLastError());return -1;} #if 0//此循環是用于鎖定要彈出的U盤設備，如果U盤在使用，則循環等待// Do this in a loop until a timeout period has expiredfor(nTryCount = 0;nTryCount < LOCK_RETRIES;nTryCount++){if(DeviceIoControl(hDevice,FSCTL_LOCK_VOLUME,NULL,0,NULL,0,&dwBytesReturned,NULL)){break;}}//卸載U盤卷，不論是否在使用dwBytesReturned = 0;if(!DeviceIoControl(hDevice,FSCTL_DISMOUNT_VOLUME,NULL,0,NULL,0,&dwBytesReturned,NULL)){printf("deviceIoConrol FSCTL_DISMOUNT_VOLUME failed\n");} #endifdwBytesReturned = 0;PREVENT_MEDIA_REMOVAL PMRBuffer;PMRBuffer.PreventMediaRemoval = FALSE;if(!DeviceIoControl(hDevice,IOCTL_STORAGE_MEDIA_REMOVAL,&PMRBuffer,sizeof(PREVENT_MEDIA_REMOVAL),NULL,0,&dwBytesReturned,NULL)){printf("DeviceIoControl IOCTL_STORAGE_MEDIA_REMOVAL failed:%d\n",GetLastError());}bResult = DeviceIoControl(hDevice,IOCTL_STORAGE_EJECT_MEDIA,NULL,0,NULL,0,&retu,NULL);if(!bResult){CloseHandle(hDevice);printf("uninstallusb DeviceIoControl failed error:%d\n",GetLastError());return -1;}CloseHandle(hDevice);return 0; }int main(int argc, char ** argv) {int i;for (i=1; i < argc; i++)UninstallUsb(argv[1]);return 0; }

?

總結

以上是生活随笔為你收集整理的java弹出U盘的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。