关于使用c++制作蓝牙连接，Windows版本

  1 #define _CRT_SECURE_NO_WARNINGS
  2  #pragma warning(disable : 4995)
  3  #include <iostream>
  4  #include <string>
  5  #include <vector>
  6  #include <sstream>
  7  #include <iomanip>
  8  #include <windows.h>
  9  #include <stdlib.h>
 10  #include<bluetoothapis.h>
 11  #include <winsock.h>
 12  #include <ws2bth.h>
 13  #include<Stringapiset.h>
 14  #pragma comment(lib, "wsock32.lib")
 15  #pragma comment(lib, "bthprops.lib")
 16  #pragma comment(lib,"ws2_32.lib")
 17  using namespace std; string PassKey;
 18  HANDLE btdi;
 19  vector<BLUETOOTH_DEVICE_INFO> devices;
 20  BLUETOOTH_DEVICE_INFO device;
 21  SOCKET sockClient;
 22  WSADATA wsaData;
 23  string wstring2string(const wstring& ws)
 24  {
 25      string curLocale = setlocale(LC_ALL, NULL);
 26      setlocale(LC_ALL, "chs");
 27      const wchar_t* _Source = ws.c_str();
 28      size_t _Dsize = 2 * ws.size() + 1;
 29      char* _Dest = new char[_Dsize];
 30      memset(_Dest, 0, _Dsize);
 31      wcstombs(_Dest, _Source, _Dsize);
 32      string result = _Dest; delete[]_Dest;
 33      setlocale(LC_ALL, curLocale.c_str());
 34      return result;
 35  }
 36  string String_To_UTF8(const std::string& str)
 37  {
 38      int nwLen = ::MultiByteToWideChar(CP_ACP, 0, str.c_str(), -1, NULL, 0);
 39      wchar_t* pwBuf = new wchar_t[nwLen + 1];//一定要加1，不然会出现尾巴
 40      ZeroMemory(pwBuf, nwLen * 2 + 2);
 41      ::MultiByteToWideChar(CP_ACP, 0, str.c_str(), str.length(), pwBuf, nwLen);
 42      int nLen = ::WideCharToMultiByte(CP_UTF8, 0, pwBuf, -1, NULL, NULL, NULL, NULL); char* pBuf = new char[nLen + 1];
 43      ZeroMemory(pBuf, nLen + 1);
 44      ::WideCharToMultiByte(CP_UTF8, 0, pwBuf, nwLen, pBuf, nLen, NULL, NULL);
 45      std::string retStr(pBuf); delete[]pwBuf; delete[]pBuf;
 46      pwBuf = NULL; pBuf = NULL; return retStr;
 47  }
 48  string getMAC(BLUETOOTH_ADDRESS Daddress)
 49  {
 50      /*string addr; addr = addr.sprintf("%02x:%02x:%02x:%02x:%02x:%02x", Daddress.rgBytes[5], Daddress.rgBytes[4], Daddress.rgBytes[3], Daddress.rgBytes[2], Daddress.rgBytes[1], Daddress.rgBytes[0]);
 51      return addr;*/
 52      ostringstream oss; oss << hex << setfill('0') << uppercase;
 53      for (int i = 5; i >= 0; --i) {
 54      oss << setw(2) << static_cast<int>(Daddress.rgBytes[i]); if (i > 0) { oss << ":"; } }
 55      return oss.str();
 56  }
 57  vector<BLUETOOTH_DEVICE_INFO> scanDevices()
 58  {
 59      HBLUETOOTH_RADIO_FIND hbf = NULL;
 60      HANDLE hbr = NULL; HBLUETOOTH_DEVICE_FIND hbdf = NULL;
 61      BLUETOOTH_FIND_RADIO_PARAMS btfrp = { sizeof(BLUETOOTH_FIND_RADIO_PARAMS) }; //调用BluetoothFindFirstDevice搜索本机蓝牙收发器所需要的搜索参数对象
 62      BLUETOOTH_RADIO_INFO bri = { sizeof(BLUETOOTH_RADIO_INFO) }; //初始化一个储存蓝牙收发器信息（BLUETOOTH_RADIO_INFO）的对象bri
 63      BLUETOOTH_DEVICE_SEARCH_PARAMS btsp = { sizeof(BLUETOOTH_DEVICE_SEARCH_PARAMS) };//调用BluetoothFindFirstDevice搜索本所需要的搜索参数对象
 64      BLUETOOTH_DEVICE_INFO btdi = { sizeof(BLUETOOTH_DEVICE_INFO) }; //初始化一个远程蓝牙设备信息（BLUETOOTH_DEVICE_INFO）对象btdi，以储存搜索到的蓝牙设备信息
 65      hbf = BluetoothFindFirstRadio(&btfrp, &hbr); //得到第一个被枚举的蓝牙收发器的句柄hbf可用于BluetoothFindNextRadio，hbr可用于BluetoothFindFirstDevice。若没有找到本机的蓝牙收发器，则得到的句柄hbf=NULL
 66      vector<BLUETOOTH_DEVICE_INFO> res; bool brfind = hbf != NULL;
 67      while (brfind) { if (BluetoothGetRadioInfo(hbr, &bri) == ERROR_SUCCESS)//获取蓝牙收发器的信息，储存在bri中
 68      {
 69          cout << "[Local Device Name]:" << wstring2string(bri.szName) << "\t"; //蓝牙收发器的名字
 70          cout << "[Local Device Address]: " << getMAC(bri.address) << endl;
 71          cout << "------------------------蓝牙扫描结果如下----------------------------" << endl;
 72          btsp.hRadio = hbr; //设置执行搜索设备所在的句柄，应设为执行BluetoothFindFirstRadio函数所得到的句柄
 73          btsp.fReturnAuthenticated = TRUE;//是否搜索已配对的设备 btsp.fReturnConnected = FALSE;//是否搜索已连接的设备
 74          btsp.fReturnRemembered = TRUE;//是否搜索已记忆的设备
 75          btsp.fReturnUnknown = TRUE;//是否搜索未知设备
 76          btsp.fIssueInquiry = TRUE;//是否重新搜索，True的时候会执行新的搜索，时间较长，FALSE的时候会直接返回上次的搜索结果。
 77          btsp.cTimeoutMultiplier = 30;//指示查询超时的值，以1.28秒为增量。 例如，12.8秒的查询的cTimeoutMultiplier值为10.此成员的最大值为48.当使用大于48的值时，调用函数立即失败并返回
 78          hbdf = BluetoothFindFirstDevice(&btsp, &btdi);//通过找到第一个设备得到的HBLUETOOTH_DEVICE_FIND句柄hbdf来枚举远程蓝牙设备，搜到的第一个远程蓝牙设备的信息储存在btdi对象中。若没有远程蓝牙设备，hdbf=NULL。
 79          bool bfind = hbdf != NULL;
 80          int i = 0;
 81          while (bfind) {
 82          cout << ++i << " " << "[Name]:" << wstring2string(btdi.szName); //远程蓝牙设备的名字
 83          cout << "\t[Address]:" << getMAC(btdi.Address) << endl;
 84          res.push_back(btdi); bfind = BluetoothFindNextDevice(hbdf, &btdi);//通过BluetoothFindFirstDevice得到的HBLUETOOTH_DEVICE_FIND句柄来枚举搜索下一个远程蓝牙设备，并将远程蓝牙设备的信息储存在btdi中 }
 85          BluetoothFindDeviceClose(hbdf);//使用完后记得关闭HBLUETOOTH_DEVICE_FIND句柄hbdf。 }
 86          CloseHandle(hbr);
 87          brfind = BluetoothFindNextRadio(hbf, &hbr);//通过BluetoothFindFirstRadio得到的HBLUETOOTH_RADIO_FIND句柄hbf来枚举搜索下一个本地蓝牙收发器，得到可用于BluetoothFindFirstDevice的句柄hbr。 }
 88          return res;
 89  }
 90  void setPassKey() { cout << "请输入配对码：（如果不知道请输入默认0000）:"; cin >> PassKey; cout << "您输入的配对码为: " << PassKey << endl; }
 91  bool pairDevice()
 92  {
 93   cout << "输入你想要配对的设备的序号：";
 94   int index; cin >> index; //获取设备信息 device = devices[index - 1]; //输入配对码
 95   setPassKey(); //string转PWSTR wstringstream wss; for (char c : PassKey) { wss << wchar_t(c); } wstring wstr = wss.str(); const wchar_t* wcharPtr = wstr.c_str(); PWSTR AUTHENTICATION_PASSKEY = const_cast<PWSTR>(wcharPtr); //开始配对 wstring ws = device.szName; HBLUETOOTH_AUTHENTICATION_REGISTRATION hCallbackHandle = 0; DWORD result = -1;
 96  if (!device.fAuthenticated) {
 97  result = BluetoothAuthenticateDevice(NULL, btdi, &device, AUTHENTICATION_PASSKEY, (ULONG)wcslen(AUTHENTICATION_PASSKEY)); //配对函数，AUTHENTICATION_PASSKEY是我的蓝牙配对码
 98  if (result != ERROR_SUCCESS) {
 99     switch (result) { case ERROR_CANCELLED:
100     cout << "用户取消了身份验证或配对操作" << endl; break; case ERROR_INVALID_PARAMETER: cout << "传递给函数的参数无效" << endl; break;
101     case ERROR_NO_MORE_ITEMS: cout << "没有更多的设备可以配对" << endl; break; case ERROR_NOT_SUPPORTED: cout << "不支持请求的操作" << endl; break;
102     case ERROR_GEN_FAILURE: cout << "通用失败错误" << endl; break;
103     case ERROR_BUSY: cout << "蓝牙堆栈忙" << endl; break;
104     case ERROR_TIMEOUT: cout << "操作超时" << endl; break; case ERROR_DEVICE_NOT_CONNECTED: cout << "蓝牙设备未连接" << endl; break;
105     case ERROR_DEVICE_NOT_AVAILABLE: cout << "设备不可用" << endl; break;
106     default: cout << "校验码出错，请手动进行设备连接" << endl; break; } return false; }
107     }
108     cout << "身份验证成功，蓝牙设备已成功配对" << endl;; BluetoothUpdateDeviceRecord(&device); return true;
109     }
110 bool sendMessage(SOCKET sockClient, string message, int& iCount) {
111     int sum = 0; while (iCount < message.size())
112     {
113     string utf8message = String_To_UTF8(message); iCount = send(sockClient, utf8message.data() + sum, utf8message.size() - sum, 0);
114     if (iCount == SOCKET_ERROR) { cout << "发送失败" << endl; return false; } sum += iCount; } }
115 bool buildConnect(BLUETOOTH_DEVICE_INFO device, SOCKET& sockClient) {
116     if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0) {
117         cout << "Winsock库初始化失败" << endl;
118         return FALSE;
119     }
120     SOCKET client_socket = socket(AF_BTH, SOCK_STREAM, BTHPROTO_RFCOMM);
121     if (client_socket == INVALID_SOCKET)
122     {
123         cout << "套接字创建失败" << endl; WSACleanup(); return FALSE; }
124         sockClient = client_socket; SOCKADDR_BTH serverAddress; memset(&serverAddress, 0, sizeof(serverAddress));
125         serverAddress.addressFamily = AF_BTH; BTH_ADDR deviceAddress = device.Address.ullLong; serverAddress.btAddr = deviceAddress; serverAddress.port = 0;
126         serverAddress.serviceClassId = SerialPortServiceClass_UUID;
127         int err = ::connect(client_socket, (SOCKADDR*)&serverAddress, sizeof(serverAddress)); if (0 == err) { } else { cout << "connect连接失败" << endl;
128         closesocket(client_socket); WSACleanup(); return FALSE; } while (true) { cout << "选择您的操作：1.发送信息 2.退出" << endl; int choice; cin >> choice;
129         if (choice == 1) { cout << "请输入您想要发送的信息："; string message; cin >> message; int iCount = 0;
130         if (sendMessage(client_socket, message, iCount)) {
131         cout << "信息传输成功，发送字符数:" << iCount << endl;
132         } else {
133             cout << "send失败" << endl; return false; } }
134         else if (choice == 2) { break; } else {
135             cout << "输入错误，请重新输入" << endl;
136             }
137             }
138         closesocket(client_socket); WSACleanup();
139         BluetoothUpdateDeviceRecord(&device);
140     return TRUE; }
141 void main() {
142 devices = scanDevices();
143  if (pairDevice()) {
144  buildConnect(device, sockClient);
145  }
146  return;
147  }