MFC POST 文件到 http服务器

  include <afxinet.h>，关键是要注意http的post协议格式，以及编码（Unicode下需要进行转换）。主要分为以下几个步骤：

1、 编写数据包的头：

  这里需要注意一个是”Accept: audio/x-wav,text/plain,*/*;….”表示的是希望服务器接收的数据格式；还有就是”Content-Type: multipart/form-data;boundary=\%s”，表示是上传文件，boundary只是划分的分隔符（一般以”------------------7b1ac890a1b”的形式存在）；

2、 编写传输的主数据体：

可以理解为将不同的数据通过boundary分割开来，每类数据分别发送。首行的boundary前面需要多加”--”。格式为：

--------------------7b1ac890a1b

Content-Disposition:form-data; name=”name”; filename=”filename”

Content-Type: audio/x-wav

 

....(wav的byte流数据)

3、 编写数据包尾：

数据包结尾最后一个boundary后要多加”--”。格式为：

--------------------7b1ac890a1b

Content-Disposition:form-data; name=”Submit”

 

Submit

--------------------7b1ac890a1b--

下面是代码：

void CCPostDlg::HttpPostFile( CString url, CString file, CString paramName, CString contentType ){     CString boundary = "---------------------------1a2b3c4d5e6f";//分隔符，注意：首行必须多"--"，尾部最后必须加"--"，否则识别不出。     CString boundaryTemplate;     boundaryTemplate.Format(_T("\r\n--%s\r\n") , boundary);     byte* boundarybytes = (byte*)boundaryTemplate.GetBuffer(boundaryTemplate.GetLength());      CInternetSession pSession("ic_PostWav");     CHttpConnection* pConnect;     CHttpFile*         pFile;      CString pServeIP = _T("192.168.10.156");     INTERNET_PORT wPort = 80;     CString pObject = _T("/yxbp/index.php");     pConnect= pSession.GetHttpConnection(pServeIP , wPort);     pFile= pConnect->OpenRequest(CHttpConnection::HTTP_VERB_POST, pObject         ,NULL,0,NULL,NULL,INTERNET_FLAG_DONT_CACHE);      //数据包头     CString pPostHeader , pPostHeaderTemplate;     pPostHeaderTemplate= _T("Accept:audio/x-wav,text/html,application/xhtml+xml,application/xml,*/*;q=0.9,*/*;q=0.8\r\n")         _T("Content-Type: multipart/form-data;boundary=\%s\r\n")         _T("Connection: keep-alive\r\n");     pPostHeader.Format(pPostHeaderTemplate, boundary);     pFile->AddRequestHeaders(pPostHeader);      //数据帧头     CString pPostTop , pPostTopTemplate;     pPostTopTemplate= _T("\%sContent-Disposition:form-data; name=\"%s\"; filename=\"%s\"\r\nContent-Type: \%s\r\n\r\n");     pPostTop.Format(pPostTopTemplate  , boundaryTemplate,_T("file"), file , contentType);     byte* pPostTopbytes = (byte*)pPostTop.GetBuffer(pPostTop.GetLength());      //数据包尾     CString ender,enderTemplate;     enderTemplate= _T("\r\n--\%s\r\nContent-Disposition:form-data; name=\"\%s\"\r\n\r\n\%s");     ender.Format(enderTemplate, boundary , _T("Ender") , _T("ender"));     ender+= _T("\r\n--");     ender+= boundary;     ender+= _T("--\r\n");     byte* enderbyte = (byte*)ender.GetBuffer(ender.GetLength());      CFile cfile;     cfile.Open(file , CFile::modeRead|CFile::shareDenyRead, NULL);      DWORD dwSize = pPostTop.GetLength() + ender.GetLength() + cfile.GetLength();     pFile->SendRequestEx(dwSize);     pFile->Write(pPostTopbytes, pPostTop.GetLength());      //数据主体     int bufflength = 4 * 1024;     byte* buffer = newbyte[bufflength];     int byteRead = 0;     while((byteRead = cfile.Read(buffer , bufflength)) != 0)     {         pFile->Write(buffer , byteRead);     }     cfile.Close();      //写尾     pFile->Write(enderbyte, ender.GetLength());     pFile->EndRequest();      CString strSentence = "",strGetSentence = "";     DWORD dwRet ;     pFile->QueryInfoStatusCode(dwRet);     if(HTTP_STATUS_OK==dwRet)     {         while(pFile->ReadString(strSentence))   // 读取提交数据后的返回结果         {              strGetSentence = strGetSentence+ strSentence ;          }     }         pFile->Close();     pConnect->Close();}

 

调用：

HttpPostFile("http://127.0.0.1/xxxx/index.php","C:\\temp.wav" , "file","audio/x-wav");