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嗨，我正在使用 winhttp 函数实现 post json 请求。虽然代码中没有错误，但在执行时我无法获得正确的输出。它给了我错误，就像发生了错误 87。无法关闭 hSession 句柄。这意味着打开并且无法关闭请给我建议我应该如何删除该错误。这是我的代码

#include "stdafx.h"
#include <windows.h>
#include <winhttp.h>
#include <stdio.h>


int main(int argc, char* argv[])




{

 DWORD dwSize = 0;
    DWORD dwDownloaded = 0;
    LPSTR pszOutBuffer;
    BOOL  bResults = FALSE;
    HINTERNET  hSession = NULL, 
               hConnect = NULL,
               hRequest = NULL;

   //  Use WinHttpOpen to obtain a session handle.
    hSession = WinHttpOpen( L"WinHTTP Example/1.0",  
                            WINHTTP_ACCESS_TYPE_DEFAULT_PROXY,
                            WINHTTP_NO_PROXY_NAME, 
                            WINHTTP_NO_PROXY_BYPASS, 0);

   //  Specify an HTTP server.
    if (hSession)
        hConnect = WinHttpConnect( hSession, L"localhost",
                                   INTERNET_DEFAULT_HTTPS_PORT, 0);

  //   Create an HTTP request handle.
    if (hConnect)
        hRequest = WinHttpOpenRequest( hConnect, L"POST", L":8080/hellowword.jsp",
                                       NULL, WINHTTP_NO_REFERER, 
                                       WINHTTP_DEFAULT_ACCEPT_TYPES, 
                                       WINHTTP_FLAG_SECURE);

TCHAR* szHeaders =  _T("Content-Type:application/json\r\n");
TCHAR* szPostData = _T("{\"command\":\"remotecontrol\",\"method\":\"countmon.getgatestatus\",\"param\":\"2\"}");



    if (hRequest)
        bResults = WinHttpSendRequest( hRequest,
                                       szHeaders, _tcslen(szHeaders),  
                                      szPostData, _tcslen(szPostData) 
                                       ,0, 0);


 //    End the request.
    if (bResults)
        bResults = WinHttpReceiveResponse( hRequest, NULL);

  //   Keep checking for data until there is nothing left.
    if (bResults)
    {
        do 
        {
//             Check for available data.
            dwSize = 0;
            if (!WinHttpQueryDataAvailable( hRequest, &dwSize)) 
            {
                printf( "Error %u in WinHttpQueryDataAvailable.\n",
                        GetLastError());
                break;
            }

       //      No more available data.
            if (!dwSize)
                break;

        //     Allocate space for the buffer.
            pszOutBuffer = new char[dwSize+1];
            if (!pszOutBuffer)
            {
                printf("Out of memory\n");
                break;
            }

       //      Read the Data.
            ZeroMemory(pszOutBuffer, dwSize+1);

            if (!WinHttpReadData( hRequest, (LPVOID)pszOutBuffer, 
                                  dwSize, &dwDownloaded))
            {                                  
                printf( "Error %u in WinHttpReadData.\n", GetLastError());
            }
            else
            {
                printf("%s", pszOutBuffer);
            }

    //         Free the memory allocated to the buffer.
            delete [] pszOutBuffer;

     //        This condition should never be reached since WinHttpQueryDataAvailable
     //        reported that there are bits to read.
            if (!dwDownloaded)
                break;

        } while (dwSize > 0);
    }
    else
    {
     //    Report any errors.
        printf( "Error %d has occurred.\n", GetLastError() );
    }

    // Close any open handles.
    if (hRequest) WinHttpCloseHandle(hRequest);

    if (hConnect) WinHttpCloseHandle(hConnect);
    if (hSession) WinHttpCloseHandle(hSession);

    system("pause");
    return 0;

    }
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