问题描述
这是我在网上找的一段代码,放在vs2017里面没问题。大多数是头文件在qt里面不能用,有的关键字在qt里面也不能用，会报错和警告,qt不是可以在window下面编程的嘛,遇到这种问题该怎么解决
#include <iostream>#include 'winsock2.h'#pragma comment(lib,'ws2_32.lib')using namespace std;int main(int argc, char *argv[]){ const int BUF_SIZE = 64; WSADATA wsd;//WSADATA变量 SOCKET sServer;//服务端套接字 SOCKET sClient;//客户端套接字 SOCKADDR_IN addrServ;//服务器地址 char buf[BUF_SIZE];//接受数据缓冲区 char sendBuf[BUF_SIZE];//返回给客户端的数据 int retVal;//返回值//初始化套接字动态库 if(WSAStartup(MAKEWORD(2,2),&wsd) != 0) {cout << 'WSAStartup failed!' << endl;return 1; } //创建套接字 sServer = socket(AF_INET,SOCK_STREAM,IPPROTO_TCP); if(INVALID_SOCKET == sServer) {cout << 'socket failed!' << endl;WSACleanup();//释放套接字资源return -1; } //服务器套接字地址 addrServ.sin_family = AF_INET; addrServ.sin_port = htons(6666); addrServ.sin_addr.s_addr = INADDR_ANY; //绑定套接字 retVal = bind(sServer,(LPSOCKADDR)&addrServ,sizeof(SOCKADDR_IN)); if(SOCKET_ERROR == retVal) {cout << 'bind failed!' << endl;closesocket(sServer);//关闭套接字WSACleanup();//释放套接字资源return -1; } //开始监听 retVal = listen(sServer,1); if(SOCKET_ERROR == retVal) {cout << 'listen failed!' << endl;closesocket(sServer);//关闭套接字WSACleanup();//释放套接字资源return -1; } //接受客户端请求 sockaddr_in addrClient; int addrClientlen = sizeof(addrClient); sClient = accept(sServer,(sockaddr FAR*)&addrClient,&addrClientlen); if(INVALID_SOCKET == sClient) {cout << 'accept failed!' << endl;closesocket(sServer);//关闭套接字WSACleanup();//释放套接字资源return -1; } while(true) {//接受客户端数据ZeroMemory(buf,BUF_SIZE);retVal = recv(sClient,buf,BUF_SIZE,0);if(SOCKET_ERROR == retVal){ cout << 'recv failed!' << endl; closesocket(sServer);//关闭套接字 WSACleanup();//释放套接字资源 return -1;}if(buf[0] == ’0’){ break;}cout << '客户端发送的数据:' << buf << endl;cout << '向客户端发送数据:';cin >> sendBuf;send(sClient,sendBuf,strlen(sendBuf),0); } //退出 closesocket(sServer);//关闭套接字 closesocket(sClient);//关闭套接字 WSACleanup();//释放套接字资源 return 0;}
错误 提示：C:UsersAdministrationDocumentsQtservermain.cpp:4: warning: ignoring #pragma comment [-Wunknown-pragmas] #pragma comment(lib,'ws2_32.lib')C:UsersAdministrationDocumentsQtservermain.cpp:18: error: undefined reference to `_imp__WSAStartup@8’C:UsersAdministrationDocumentsQtservermain.cpp:24: error: undefined reference to `_imp__socket@12’C:UsersAdministrationDocumentsQtservermain.cpp:28: error: undefined reference to `_imp__WSACleanup@0’C:UsersAdministrationDocumentsQtservermain.cpp:33: error: undefined reference to `_imp__htons@4’C:UsersAdministrationDocumentsQtservermain.cpp:36: error: undefined reference to `_imp__bind@12’C:UsersAdministrationDocumentsQtservermain.cpp:40: error: undefined reference to `_imp__closesocket@4’C:UsersAdministrationDocumentsQtservermain.cpp:41: error: undefined reference to `_imp__WSACleanup@0’C:UsersAdministrationDocumentsQtservermain.cpp:45: error: undefined reference to `_imp__listen@8’C:UsersAdministrationDocumentsQtservermain.cpp:49: error: undefined reference to `_imp__closesocket@4’C:UsersAdministrationDocumentsQtservermain.cpp:50: error: undefined reference to `_imp__WSACleanup@0’C:UsersAdministrationDocumentsQtservermain.cpp:56: error: undefined reference to `_imp__accept@12’C:UsersAdministrationDocumentsQtservermain.cpp:60: error: undefined reference to `_imp__closesocket@4’C:UsersAdministrationDocumentsQtservermain.cpp:61: error: undefined reference to `_imp__WSACleanup@0’C:UsersAdministrationDocumentsQtservermain.cpp:68: error: undefined reference to `_imp__recv@16’C:UsersAdministrationDocumentsQtservermain.cpp:72: error: undefined reference to `_imp__closesocket@4’C:UsersAdministrationDocumentsQtservermain.cpp:73: error: undefined reference to `_imp__WSACleanup@0’C:UsersAdministrationDocumentsQtservermain.cpp:83: error: undefined reference to `_imp__send@16’C:UsersAdministrationDocumentsQtservermain.cpp:86: error: undefined reference to `_imp__closesocket@4’C:UsersAdministrationDocumentsQtservermain.cpp:87: error: undefined reference to `_imp__closesocket@4’C:UsersAdministrationDocumentsQtservermain.cpp:88: error: undefined reference to `_imp__WSACleanup@0’collect2.exe:-1: error: error: ld returned 1 exit status有头文件的错误,也有关键词的错误
问题解答
回答1：winsock?不是给出了警告么?warning: ignoring #pragma comment [-Wunknown-pragmas]链接问题.你的qt的编译器配置的什么? mscv?
如果选的是msvc 可以试试在.pro
win32:LIBS += xxx.libwin32:QMAKE_POST_LINK += xxx.dll
PS: qt有网络库的,可以通过qt +=network使用qt的网络库.
