纯vc sdk实现http post 方式上传数据到web服务器

刚开始的时候想google一个合适的代码.但是非常失望，可能我的搜索技巧不够好，找到的几个代码都是存在这样或那样的问题

要么就是MFC实现，总之是不能满足自己的要求,所以在找了n多代码浪费了大量时间的情况下 还是自己写吧  这样的程序没什么

太大的意思，写一次以后拷贝着用就可以了 所以贴这里备用吧

 

流程：

       1：获得文件内容

       2：构造http头备用

       3：构造http尾备用

       4：与http建立连接

       5：发送...

       6：提交

 

要点：

      1：http头的构造

 

// upload.cpp : Defines the entry point for the console application.#include "stdafx.h"#include <windows.h>#include <string>#include <stdlib.h>#include <Wininet.h>#include <TCHAR.H>using namespace std ;#pragma comment(lib,"Wininet.lib") string MakeRequestHeaders(string &strBoundary){ string strData; strData += _T("Content-Type: multipart/form-data; boundary="); //二进制文件传送Content-Type类型为: multipart/form-data strData += strBoundary;strData +="/r/n"; return strData;}string MakePreFileData(string &strBoundary, string &strFileName, int iRecordID){////////////////////////////////////////////////////////////////////////////////// string strData;strData += _T("--");strData += strBoundary; strData += _T("/r/n"); strData += _T("Content-Disposition: form-data; name=/"file1/"; filename=/""); //必备1:PathstrData += strFileName;strData += _T("/""); strData += _T("/r/n"); strData += _T("Content-Type: image/pjpeg");//必备2:Type strData += _T("/r/n/r/n"); return strData;}string MakePostFileData(string &strBoundary){ string strData;strData = _T("/r/n"); strData += _T("--");strData += strBoundary; strData += _T("/r/n"); strData += _T("Content-Disposition: form-data; name=/"submitted/""); strData += _T("/r/n/r/n"); strData += _T("hello"); strData += _T("/r/n"); strData += _T("--");strData += strBoundary;strData += _T("--"); strData += _T("/r/n"); return strData;}//文件长度与文件内容 typedef struct _FileInfo{DWORD nFileLen;DWORD nFileHighLen;LPSTR FileBuf;}FileInfo,*pFileInfo;BOOL GetFileInfo(OUT FileInfo &BinaryInfo, IN string FilePath){BOOL nRet = FALSE;HANDLE hFile; DWORD nBytesRead;hFile = CreateFile(FilePath.c_str(), GENERIC_ALL, // open for reading FILE_SHARE_READ, // share for reading NULL, // no security OPEN_EXISTING, // existing file only FILE_ATTRIBUTE_NORMAL, // normal file NULL); // no attr. template %if (hFile == INVALID_HANDLE_VALUE) { return nRet;} BinaryInfo.nFileLen = GetFileSize(hFile,&BinaryInfo.nFileHighLen);BinaryInfo.FileBuf = new char[BinaryInfo.nFileLen];if (!BinaryInfo.FileBuf){CloseHandle(hFile);return nRet;}ZeroMemory(BinaryInfo.FileBuf,BinaryInfo.nFileLen);if (!ReadFile(hFile, BinaryInfo.FileBuf, BinaryInfo.nFileLen, &nBytesRead, NULL)){CloseHandle(hFile);return nRet;}CloseHandle(hFile);nRet = TRUE;return nRet;}/* * 本地路径 服务器地址 服务器路径 数据分割信息 端口 * 通过以上传入信息 将二进制数据传入web服务器 **/BOOL Upload(IN string& FilePath,IN string& ServerName,IN string& ObjectName, IN string& HTTPBoundary,IN INTERNET_PORT &nPort){BOOL nRet = FALSE;HINTERNET hInternet;//by InternetOpenHINTERNET hHttpSession;//by InternetConnectHINTERNET hHttpRequest;//by HttpOpenRequestint iRecordID = 1;DWORD dwTotalLen;//数据包的总长度//准备工作int startp = FilePath.find('//'); int namelen = FilePath.length()-startp-1;string FileName = FilePath;string strHeaders = MakeRequestHeaders(HTTPBoundary);string PreFileData = MakePreFileData(HTTPBoundary, FileName, iRecordID);string PostFileData = MakePostFileData(HTTPBoundary);////////////////////////////////////////////////////////////////////////////1:getFileInfoFileInfo localJpg;if (!GetFileInfo(localJpg,FilePath)){return FALSE;}dwTotalLen = localJpg.nFileLen + PreFileData.length() + PostFileData.length();//2:init wwwhInternet = InternetOpen(_T("lpszAgent"), INTERNET_OPEN_TYPE_DIRECT, NULL, NULL, 0);if (!hInternet){return nRet;}hHttpSession = InternetConnect( hInternet,ServerName.c_str(),INTERNET_DEFAULT_HTTP_PORT,NULL,NULL,INTERNET_SERVICE_HTTP,INTERNET_FLAG_RELOAD,0); if (hHttpSession == NULL){InternetCloseHandle(hInternet);return nRet;}//3:Opening a RequesthHttpRequest = HttpOpenRequest(hHttpSession, _T("POST"), ObjectName.c_str(), HTTP_VERSIONA, NULL,NULL, INTERNET_FLAG_MAKE_PERSISTENT,1); if (hInternet == NULL){InternetCloseHandle(hHttpSession);InternetCloseHandle(hInternet);return nRet;}//4:HttpAddRequestHeadersif (!HttpAddRequestHeaders(hHttpRequest,strHeaders.c_str(),strHeaders.length(),HTTP_ADDREQ_FLAG_ADD)){goto END;}//5:HttpSendRequestExINTERNET_BUFFERSA buffer;memset(&buffer, 0, sizeof(buffer));buffer.dwStructSize = sizeof(buffer);buffer.dwBufferTotal = dwTotalLen;if (!HttpSendRequestEx(hHttpRequest,&buffer,NULL,HSR_SYNC | HSR_INITIATE,1)){goto END;}//6:_A_send http头DWORD dwNumberOfBytesWritten;if(!InternetWriteFile(hHttpRequest,PreFileData.c_str(),PreFileData.length(),&dwNumberOfBytesWritten)){goto END;}if (dwNumberOfBytesWritten != PreFileData.length()){goto END;}//6:_B_send filedataif(!InternetWriteFile(hHttpRequest,localJpg.FileBuf,localJpg.nFileLen,&dwNumberOfBytesWritten)){goto END;}if (dwNumberOfBytesWritten != localJpg.nFileLen){goto END;}//6:_C_send Http尾if(!InternetWriteFile(hHttpRequest,PostFileData.c_str(),PostFileData.length(),&dwNumberOfBytesWritten)){goto END;}if (dwNumberOfBytesWritten != PostFileData.length()){goto END;}//7:完成提交 必不可少HttpEndRequest(hHttpRequest,NULL,HSR_SYNC,1);END:InternetCloseHandle(hHttpRequest);InternetCloseHandle(hHttpSession);InternetCloseHandle(hInternet);return nRet;}int main(int argc, char* argv[]){string FilePath = _T("C://test//16.jpg");;//本地文件路径string ServerName = _T("www.baidu.com"); //服务器地址string ObjectName = _T("//test//upload//upload.asp"); //服务器文件对象string HTTPBoundary = _T("---------------------------7db29f2140360");//边界值:要求不严格INTERNET_PORT nPort = 80;//端口Upload(FilePath,ServerName,ObjectName,HTTPBoundary,nPort);return 0;} 

补充:在实验过程中，在服务器要求不严格的情况下，buffer的内容可以自定义，而不一定需要完全符合jpg...的格式,但是

Content-Disposition: form-data; name=/"file1/"; filename=/"jj.yy'")这个地方filename的后缀必须是jpg格式