纯C++实现的HTTP请求（POST/GET）

纯C++实现的HTTP请求（POST/GET），支持windows和linux， 

进行简单的封装， 方便调用。实现如下：

#include "HttpConnect.h"  #ifdef WIN32 #pragma comment(lib,"ws2_32.lib") #endif  HttpConnect::HttpConnect() { #ifdef WIN32     //此处一定要初始化一下，否则gethostbyname返回一直为空     WSADATA wsa = { 0 };     WSAStartup(MAKEWORD(2, 2), &wsa); #endif }  HttpConnect::~HttpConnect() {  } void HttpConnect::socketHttp(std::string host, std::string request) {     int sockfd;     struct sockaddr_in address;     struct hostent *server;      sockfd = socket(AF_INET,SOCK_STREAM,0);     address.sin_family = AF_INET;     address.sin_port = htons(80);     server = gethostbyname(host.c_str());     memcpy((char *)&address.sin_addr.s_addr,(char*)server->h_addr, server->h_length);      if(-1 == connect(sockfd,(struct sockaddr *)&address,sizeof(address))){         DBG <<"connection error!"<<std::endl;         return;     }      DBG << request << std::endl; #ifdef WIN32     send(sockfd, request.c_str(),request.size(),0); #else     write(sockfd,request.c_str(),request.size()); #endif     char buf[1024*1024] = {0};       int offset = 0;     int rc;  #ifdef WIN32     while(rc = recv(sockfd, buf+offset, 1024,0)) #else     while(rc = read(sockfd, buf+offset, 1024)) #endif     {         offset += rc;     }  #ifdef WIN32     closesocket(sockfd); #else     close(sockfd); #endif     buf[offset] = 0;     DBG << buf << std::endl;  }  void HttpConnect::postData(std::string host, std::string path, std::string post_content) {     //POST请求方式     std::stringstream stream;     stream << "POST " << path;     stream << " HTTP/1.0\r\n";     stream << "Host: "<< host << "\r\n";     stream << "User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3\r\n";     stream << "Content-Type:application/x-www-form-urlencoded\r\n";     stream << "Content-Length:" << post_content.length()<<"\r\n";     stream << "Connection:close\r\n\r\n";     stream << post_content.c_str();      socketHttp(host, stream.str()); }  void HttpConnect::getData(std::string host, std::string path, std::string get_content) {     //GET请求方式     std::stringstream stream;     stream << "GET " << path << "?" << get_content;     stream << " HTTP/1.0\r\n";     stream << "Host: " << host << "\r\n";     stream <<"User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3\r\n";     stream <<"Connection:close\r\n\r\n";      socketHttp(host, stream.str()); }

调用方法：

HttpConnect *http = new HttpConnect(); http->getData("127.0.0.1", "/login", "id=liukang&pw=123"); http->postData("127.0.0.1", "/login","id=liukang&pw=123");